NIPPON STEEL Chemical & Material Co., Ltd. (Japan)
Inventor
Kondo, Narumi
Kimura, Keiichi
Takahashi, Kazuhiro
Hiraga, Takuya
Abstract
A titanium alloy foil, wherein when a thickness is represented by t, the t is 0.005 mm or more and 0.200 mm or less, in X-ray diffraction intensities obtained when X-ray diffraction is performed on a surface, a peak intensity of a 200 plane of a crystal of a body-centered cubic structure is 5.0 times or larger a maximum peak intensity from other crystal structures, in X-ray diffraction intensities of the crystal of the body-centered cubic structure among the X-ray diffraction intensities, the peak intensity of the 200 plane or a peak intensity of a 211 plane is larger than a peak intensity of a 110 plane, and a tensile strength is 1,000 MPa or more and 1,800 MPa or less.
There is provided a non-oriented electrical steel sheet having a predetermined chemical composition, in which an area fraction of a crystal structure A composed of crystal grains having a grain size of 100 μm or more is 1% to 30% in a cross section parallel to a rolled plane of the non-oriented electrical steel sheet, an average grain size of a crystal structure B which is a crystal structure other than the crystal structure A is 40 μm or less, and a Vickers hardness HvA of the crystal structure A and a Vickers hardness HvB of the crystal structure B satisfy Equation 1 ((HvA2+HvB2)/2−(HvA+HvB)2/4≤7.0).
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
A steel sheet has a predetermined chemical composition, a microstructure at a t/4 portion ranging from ⅛ to ⅜ of a sheet thickness in a sheet thickness direction from a surface includes, by area ratio, ferrite: less than 10.0% and pearlite: more than 90.0%, a remainder of the microstructure is one or two or more of bainite, martensite, and residual austenite, granular cementites present on block boundaries and granular cementites present on colony boundaries have a maximum diameter of 0.50 μm or less in the microstructure, the number of grains of the granular cementites present on the block boundaries and grains of the granular cementites present on the colony boundaries per unit length is 0.3 pieces/μm or more and 5.0 pieces/μm or less, the granular cementites are cementites having an aspect ratio of less than 10, and a tensile strength is 1,200 MPa or more.
A hot stamped body, including: a steel material; and a plated layer, wherein a chemical composition of the plated layer contains, in mass %, 0 to 70% of Al, 10 to 60% of Fe, 0 to 20% of Si, and a C-group element being any one kind or two kinds of Li and Y, with a content of 0.00001 to 0.3% in total, and optionally further contains any one kind or two or more kinds of Sb, Pb, B, Cu, Ti, Cr, Nb, Ni, Mn, Mo, Ag, Co, Sn, and Bi, and a remainder being of Zn and an impurity, wherein the plated layer contains an n-Zn phase or a Zn-containing phase is used.
The duplex stainless steel pipe according to the present disclosure consists of, by mass %, C: 0.030% or less, Si: 1.00% or less, Mn: 0.10 to 7.00%, P: 0.040% or less, S: 0.0050% or less, Cr: 20.0 to 30.0%, Ni: 4.2 to 10.0%, Mo: 0.5 to 5.0%, Cu: 0.5 to 6.0%, N: less than 0.350%, O: 0.0005 to 0.0100%, and Ca: 0.0005 to 0.0100%, with the balance being Fe and impurities. A microstructure consists of, in volume ratio, ferrite in an amount of 30 to 80% with the balance being austenite. A yield strength is 552 MPa or more. A number density of Ca oxides having an equivalent circular diameter of 2.0 μm or more is 500/100 mm2 or more.
Provided is a welded joint in which: a base material has a specific chemical composition in which α in the below formula is 5.0 to 16.0; the tensile strength is 615 MPa to 930 MPa; as regards the microstructure at a position 1/4 of the thickness from the surface, the total of the area percentages of lower bainite and martensite is 15.0% or more, the total of the area percentages of upper bainite, lower bainite, and martensite is 90.0% or more, and the area percentage of residual austenite is less than 1.7%; and the effective grain size in the region between the melt line of the weld part and a position that is 1 mm away from the melt line of the welding heat-affected part is 100.0 μm. Also provided is a pressure vessel including the welded joint. α=0.50×√[C]×(1+0.64[Si])×(1+4.10[Mn])×(1+0.27[Cu])×(1+0.52[Ni])×(1+2.33[Cr])×(1+3.14[Mo])
An electrical steel sheet includes an annular body. At least one of a plurality of adhesion layers (41) is a first adhesion layer. In one of two electrical steel sheets sandwiching the first adhesion layer in a stacking direction, when an imaginary axis intersecting with a central axis of the annular body and extending in an easy-magnetization direction is defined as an L-axis, an imaginary axis intersecting with the central axis and intersecting with the L-axis is defined as a C-axis, and the electrical steel sheet is partitioned into a plurality of sections(S) in a circumferential direction of the annular body by the L-axis and the C-axis, at least one of the plurality of sections(S) is a first section. In the first section, an area of the first adhesion layer in a first portion (P1) of the electrical steel sheet where a main magnetic flux is generated in the L-axis direction is smaller than an area of the first adhesion layer in a second portion (P2) of the electrical steel sheet where the main magnetic flux is generated in the C-axis direction.
A welded rail having excellent fatigue damage resistance and breakage resistance of a welded joint portion according to an aspect of the present invention includes: a plurality of rail portions; and a welded joint portion joining the rail portions, in which a HAZ width (W) is 60 mm or less, and when an interval between a most softened portion and a welding center measured along a longitudinal direction is defined as WX and a region where the distance from the welding center is 0.6 WX to 0.7 WX and the depth from a top portion outer surface is 2 to 5 mm is defined as a pro-eutectoid cementite structure evaluation region, in the pro-eutectoid cementite structure evaluation region, a total number of intersections (N) of a pro-eutectoid cementite structure intersecting a cross line including two line segments having a length of 100 μm parallel to the longitudinal direction and the vertical direction is 26 or less.
An evaluation device (100) evaluates the vibration of a magnetic material. The evaluation device (100) is provided with a magnetic core (10), a plurality of winding parts (20), and first measurement devices (31, 32, 33). The magnetic core (10) is made of a magnetic material. The magnetic core (10) includes a leg part (11). The winding parts (20) are arranged with a gap (G) in the axial direction of the leg part (11), and are attached to the leg part (11) in such a manner that the leg part (11) is exposed from the gap (G). The winding parts (20) are constructed to excite the magnetic core (10) by energization. The first measurement devices (31, 32, 33) measure the vibration of the leg part (11).
The hot-rolled steel sheet according to the present invention has a desired chemical composition, and in the internal region, the average aspect ratio of prior-austenite grains is 4.00-6.00, the area ratio of the martensite is 90% or more, and the value obtained by dividing the average aspect ratio of prior-austenite grains in the surface layer region by the average aspect ratio of prior-austenite grains in the internal region is less than 0.950.
This hot-stamp molded body has a desired chemical composition, has a tensile strength of 1800 MPa or more, has an average value of residual stress on a steel sheet surface of −250 MPa or less, and has an Hvs/Hvi ratio of 0.90 or less, Hvs/Hvi being the ratio of the average hardness Hvs in a surface layer region that is a region 20-50 μm deep from the surface and the average hardness Hvi at a depth of 1/4 of the plate thickness from the surface.
C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
B24C 1/10 - Methods for use of abrasive blasting for producing particular effectsUse of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
B24C 11/00 - Selection of abrasive materials for abrasive blasts
C21D 1/18 - HardeningQuenching with or without subsequent tempering
C21D 7/06 - Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
C21D 9/00 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
This shock-absorbing member is long in one direction and comprises a hollow tube and a reinforcement arranged in a fixed manner inside the hollow tube. The hollow tube comprises a steel material having a tensile strength of 650-1600 MPa. The reinforcement comprises a steel material having a tensile strength of 590-1600 MPa. In a cross section perpendicular to the lengthwise direction of the shock-absorbing member, the hollow tube has a top wall section and a pair of side wall sections, the reinforcement has a horizontal plate connected between the pair of side wall sections and a vertical plate connected between the top wall section and a position between one end and the other end of the horizontal plate, the hollow tube has a first part, a second part, and a third part arranged in this order along the lengthwise direction, and the second part has a fold start point section.
B62D 21/15 - Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
B60R 19/18 - Means within the bumper to absorb impact
B62D 21/00 - Understructures, i.e. chassis frame on which a vehicle body may be mounted
Disclosed is a technology for imparting a color tone difference to a silicon nitride-based sintered body. A silicon nitride-based sintered body according to the present disclosure is characterized by having a plurality of crystal grains and a grain boundary phase that bonds the crystal grains to each other, and by having a lightness difference of 5 or more in terms of the L* value. The silicon nitride-based sintered body according to the present disclosure is obtained, for example, by kneading a silicon nitride powder and a powder of an auxiliary starting material so as to obtain a granulated body, and subsequently molding the granulated body and firing the molded body under specific conditions.
Disclosed is a technique that increases the brightness of a surface of a silicon nitride-based sintered body. A silicon nitride-based sintered body according to the present disclosure has a plurality of crystal grains and a grain boundary phase that binds the crystal grains to each other, has an L* value of 55 or more in at least a portion of the surface, and has a thickness of 10 mm or more. The silicon nitride-based sintered body according to the present disclosure is obtained, for example, by kneading a silicon nitride powder and a powder of a sub-raw material to obtain a granulated body, and then molding and sintering the granulated body under a predetermined condition.
A vehicle body 1 includes a center pillar 4, and a side sill 5 that is connected to the center pillar 4. The side sill 5 has a closed cross-sectional shape including an outer surface 153a that is arranged in an orientation along the vertical direction Z and that faces outward in a vehicle width direction Y, a bottom surface 154a that is arranged below the outer surface 153a and that is in an orientation facing the ground, and a lower flange 155 projecting downward from the bottom surface 154a. The center pillar 4 includes an overlapping portion 22 arranged so as to cover an external surface of the side sill 5 at a portion connected to the side sill 5. A lower end 224b of the overlapping portion 22 extends along the bottom surface 154a of the side sill 5.
B62D 21/15 - Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
In a rotor core cross section, positions of open-end front-side corner portions (1131a, 1131c) are on a rear side in a rotation direction of a rotor core (811) further than reference positions (831a, 831b).
An excitation waveform determination device (100) sets an initial candidate solution group (IS) and a new candidate solution group (US) as one or a plurality of candidate groups of an excitation waveform based on a harmonic superimposition condition (HC) being information that specifies a harmonic to be superimposed on a fundamental wave included in the excitation waveform, executes an electromagnetic field analysis to calculate respective electromagnetic forces generated in a stator (320) when making the candidate solutions included in the one or plurality of set candidate solution groups of the excitation waveform flow through a motor (M), and determines the excitation waveform based on a result of the execution of the electromagnetic field analysis.
H02P 23/04 - Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for damping motor oscillations, e.g. for reducing hunting
H02P 23/14 - Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
A duplex stainless steel material that has excellent general corrosion resistance and pitting resistance in a supercritical corrosive environment in which SOX gas and O2 gas are contained in a supercritical CO2 gas is provided. A duplex stainless steel material of the present disclosure has the chemical composition described in the description, and in the duplex stainless steel material, on a precondition that the content of each element is within a range described in the description, Fn defined by Formula (1) is 44.0 or more, and a total number per 1 mm2 of Mn sulfides having an equivalent circular diameter of 1.0 μm or more and Ca sulfides having an equivalent circular diameter of 2.0 μm or more is 0.50/mm2 or less.
A duplex stainless steel material that has excellent general corrosion resistance and pitting resistance in a supercritical corrosive environment in which SOX gas and O2 gas are contained in a supercritical CO2 gas is provided. A duplex stainless steel material of the present disclosure has the chemical composition described in the description, and in the duplex stainless steel material, on a precondition that the content of each element is within a range described in the description, Fn defined by Formula (1) is 44.0 or more, and a total number per 1 mm2 of Mn sulfides having an equivalent circular diameter of 1.0 μm or more and Ca sulfides having an equivalent circular diameter of 2.0 μm or more is 0.50/mm2 or less.
Fn
=
Cr
+
3.3
(
Mo
+
0.5
W
)
+
16
N
+
2
Ni
+
Cu
+
2
Co
+
10
Sn
(
1
)
A duplex stainless steel material that has excellent general corrosion resistance and pitting resistance in a supercritical corrosive environment in which SOX gas and O2 gas are contained in a supercritical CO2 gas is provided. A duplex stainless steel material of the present disclosure has the chemical composition described in the description, and in the duplex stainless steel material, on a precondition that the content of each element is within a range described in the description, Fn defined by Formula (1) is 44.0 or more, and a total number per 1 mm2 of Mn sulfides having an equivalent circular diameter of 1.0 μm or more and Ca sulfides having an equivalent circular diameter of 2.0 μm or more is 0.50/mm2 or less.
Fn
=
Cr
+
3.3
(
Mo
+
0.5
W
)
+
16
N
+
2
Ni
+
Cu
+
2
Co
+
10
Sn
(
1
)
Where, the content in mass % of a corresponding element is substituted for each symbol of an element in Formula (1).
A method for manufacturing a riveted joint includes: causing a shaft portion of a steel rivet having the shaft portion and a head portion to pass through through-holes of a plurality of overlaid sheet members; sandwiching the rivet between a pair of electrodes in axial direction of the rivet; applying a force to the rivet and energizing the rivet with the electrodes to form a deformed portion at a distal end of the shaft portion; and cooling the rivet. In the rivet after cooling, a Vickers hardness HB of the head portion satisfies 130≤HB≤330, and a Vickers hardness HA of the deformed portion, a thickness TA of the deformed portion, a Vickers hardness HJ of a portion of the shaft portion at center in axial direction and at center in radial direction, diameter DJ of the shaft portion, a Vickers hardness HB of the head portion, and a thickness TB of the head portion satisfy HJ×DJ≥4.7×HB×TB and HA×TA≥1.3×HB×TB.
The hot-rolled steel sheet according to the present invention has a desired chemical composition, and in the internal region, the average aspect ratio of prior-austenite grains is 3.00 to 5.50, the area ratio of bainite is 70 to 95%, the area ratio of martensite is 5 to 30%, and the value obtained by dividing the average aspect ratio of prior-austenite grains in the surface layer region by the average aspect ratio of prior-austenite grains in the internal region is less than 1.00.
The hot-rolled steel sheet according to the present invention has a desired chemical composition, and in the internal region, the average aspect ratio of prior-austenite grains is 2.00 or more and less than 4.00, the area ratio of the martensite is 90% or more, and the value obtained by dividing the average aspect ratio of prior-austenite grains in the surface layer region by the average aspect ratio of prior-austenite grains in the internal region is less than 0.950.
This impact absorption member is provided in a vehicle body, is formed along a prescribed longitudinal direction, and includes a closed cross section part in which a cross section orthogonal to the longitudinal direction has a closed cross-sectional shape. The impact absorption member is provided with: a low-strength part; a high-strength part that has the central part in the plate thickness direction in parallel with the low-strength part, the central part having a higher Vickers hardness than the central part in the plate thickness direction of the low-strength part; and a joining part that joins the low-strength part and the high-strength part. The maximum bending angle of the high-strength part is set according to the maximum bending angle of the low-strength part.
This shock absorption member has a configuration in which a breaking start-point is provided in a hollow tube, or a configuration in which a breaking start-point is provided in a reinforcement. The shock absorption member further includes a pair of reinforcement parts that extend along an extension direction of each ridge section of the hollow tube, each reinforcement part being provided at a position adjacent to the ridge section on an outer surface of a side wall part when the hollow tube is viewed in a cross section perpendicular to the longitudinal direction at a position of a start point section.
F16F 7/12 - Vibration-dampersShock-absorbers using plastic deformation of members
B62D 21/15 - Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
This estimation device comprises a control unit that, by using an estimation model constructed in advance by using known data including supplementary information that is information on iron scrap including iron to be recycled and information on a concentration of an impurity element included in the iron scrap, estimates a concentration of an impurity element included in iron scrap to be evaluated.
25i250i00≤0.70; the Mg content in the surface oxide film is 0.05 atom% or more; and the adhesion amount of the plating layer is 20 g/m2 or more per surface.
This steel material has a prescribed chemical composition, wherein, in a cross-section perpendicular to the rolling direction, when d/2 is defined as the length of a line segment connecting the center of gravity of the cross-section to the surface of the cross-section which is nearest to the center of gravity, and a d/4 part is defined as the position of d/4 in the direction of the center of gravity from said surface, at the d/4 part of the cross-section, the number density of MnS with an area of 1.0-10.0 μm2is not more than 70.0 per mm2, the number density of MnS with an area of greater than 10.0 μm2is not more than 4.00 per mm2, and the number density of Nb-based precipitates with an area or not less than 20.0 μm2is not more than 0.20 per mm2.
The present invention provides a method for producing a grain-oriented electrical steel sheet in which a plurality of grooves that extends in a direction that is generally parallel to the width direction of a steel sheet is formed in the longitudinal direction of the steel sheet, the method including: a first groove formation step for forming a first groove comprising a plurality of grooves which extends in a direction that is generally parallel to the width direction on a cold-rolled steel sheet that serves as a material for the grain-oriented electrical steel sheet; a secondary recrystallization annealing step for annealing the cold-rolled steel sheet, on which the first groove has been formed, so as to align the easy axis of magnetization of the cold-rolled steel sheet in the longitudinal direction to form a grain-oriented electrical steel sheet; and a second groove formation step for forming a second groove comprising a plurality of grooves which extends in a direction that is generally parallel to the width direction on the grain-oriented electrical steel sheet using a contact-type groove formation process.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
θθθ is not more than 1.50%; the average particle diameter of the cementite particles is not more than 1.50 μm; the maximum particle diameter of the cementite particles is not more than 5.00 μm; and the spheroidization ratio of the cementite particles is not less than 75%.
A vehicle subframe 10 is fixed to a vehicle body, and includes a structural member that extends in a curved manner in a planar view from above the vehicle body, wherein: the structural member is made of a steel material and has an open cross-sectional shape in a direction perpendicular to an extension direction; the cross-sectional shape differs depending on a position in the extension direction of the structural member; and the structural member includes a reinforcing member 14 that is fixed at a predetermined position in the extension direction of the structural member.
[Problem] To provide a battery case and a lithium-ion battery that have exceptional electrolyte resistance and make it possible to prevent peeling of an oxide film on the inner-surface side of the battery case. [Solution] The present invention relates to a battery case for a lithium ion-battery, the battery case having a case body portion that accommodates a battery unit and a lithium-salt-containing electrolyte solution, and a lid portion that seals the case body portion. The material of the case body portion and the lid portion is a plated steel sheet in which a plating layer is provided to a base material steel sheet. A weld part at which the case body portion and the lid portion are joined to each other by welding is present in the battery case. The inner-surface side of the battery case at the weld part has a weld metal that contains not less than 0.3 mass% but less than 60.0 mass% of the main constituent component of the plating layer, and an oxide film layer that is present in a portion of the surface of the weld metal that may contact the electrolyte solution. The oxide film layer has a thickness of 5.0 μm or less.
H01M 50/15 - Lids or covers characterised by their shape for prismatic or rectangular cells
H01M 50/103 - Primary casingsJackets or wrappings characterised by their shape or physical structure prismatic or rectangular
H01M 50/107 - Primary casingsJackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
C22C 18/04 - Alloys based on zinc with aluminium as the next major constituent
C22C 19/03 - Alloys based on nickel or cobalt based on nickel
C22C 19/05 - Alloys based on nickel or cobalt based on nickel with chromium
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F 1/16 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
C23C 2/02 - Pretreatment of the material to be coated, e.g. for coating on selected surface areas
C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
Provided are a steel material and a pressure vessel containing the steel material, the steel material containing 2.65-4.45% of Ni in terms of mass%, comprising C, Si, Mn, P, S, Al, O, N, Cu, Cr, Mo, B, Nb, Ti, V, Mg, Ca, REM, Fe, and impurities within prescribed composition ranges, and being such that: α, represented by the expression α = 0.50 × √[C] × (1 + 0.64[Si]) × (1 + 4.10[Mn]) × (1 + 0.27[Cu]) × (1 + 0.52[Ni]) × (1 + 2.33[Cr]) × (1 + 3.14[Mo]), is 4.0-16.0; β, represented by the expression β = [Mn] × [P]-[Mo]/100, is 0.017 or lower; the tensile strength is 590-930 MPa; the microstructure at a site at 1/4 of the thickness in the thickness direction from the surface of the steel material includes lower bainite and martensite; the total area ratio of the lower bainite and the martensite is 15.0% or higher; and the total area ratio of upper bainite, the lower bainite, and the martensite is 90.0% or higher.
Provided are a steel material and a pressure vessel that includes the steel material, the steel material having a specific chemical composition in which α is 5.0-16.0 and a tensile strength of 615-930 MPa, and a microstructure in a location at 1/4 of the thickness from the surface of the steel material including lower bainite and martensite, the total area ratio of the lower bainite and the martensite being 15.0% or more, the total area ratio of the upper bainite, the lower bainite, and the martensite being 90.0% or more, the area ratio of residual austenite being less than 1.7%, and the Mn concentration of a center segregation part in a location at 1/2 of the thickness being 2.00% or less. α = 0.50 × √[C] × (1 + 0.64[Si]) × (1 + 4.10[Mn]) × (1 + 0.27[Cu]) × (1 + 0.52[Ni]) × (1 + 2.33[Cr]) × (1 + 3.14[Mo])
Provided is a rail capable of obtaining excellent wear resistance and damage resistance. A rail (1) according to an embodiment of the present invention contains 0.80%-1.20% of C, 0.80%-2.50% of Si, 0.10%-2.00% of Mn, 0.0250% or less of P, and 0.0250% or less of S in terms of mass%, with the balance being Fe and impurities. The metal structure of a head surface part (10A) has a pearlite area ratio of 95% or more and a Vickers hardness of 400 HV or more. In the head surface part (10A), the Si positive segregation degree, which is the ratio of the maximum value of the Si concentration in a Si positive segregation band to the Si concentration in a bulk region, is more than 1.00 to 1.35, and the Si negative segregation degree, which is the ratio of the minimum value of the Si concentration in a Si negative segregation band to the Si concentration in the bulk region, is 0.90 to less than 1.00.
This invention provides a welded joint that, even after PWHT, has a tensile strength of at least 780 MPa and excels in toughness. A welded joint (1) according to the present invention contains a weld metal in a welded part (2), and is characterized in that the weld metal has a specific chemical composition, and in a region between a depth position of 2 mm from the surface and a depth position of 12 mm from the surface in the center part of the welded part (2), the same contains a reheated zone region (32) at a structure ratio of 34% or more.
B23K 31/00 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups
B23K 9/095 - Monitoring or automatic control of welding parameters
This automotive structural member is provided with a hat-shaped first member and a hat-shaped second member. The first member has a first top plate, two first vertical walls, two first flanges, and first standing parts. The first flanges are respectively located between the first vertical walls and the first standing parts. The second member has a second top plate, two second vertical walls, and two second flanges. The second top plate is positioned between the two first vertical walls of the first member. The second vertical walls respectively face the first vertical walls of the first member. Each gap formed between the second vertical wall and the first vertical wall is 5.0 mm or less. The second flanges are respectively joined to the first flanges. The second member comprises a steel material having a tensile strength of 690 MPa or more.
B60R 19/04 - Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section
B62D 21/15 - Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
25i250i00 ≤ 0.70; the Mg content in the surface oxide film is 0.10% by atom or more; and the adhesion amount of the plating layer is 20 g/m2 or more per one surface.
The present invention provides a plated steel sheet which is characterized by including a base steel sheet and a plating layer that is formed on the surface of the base steel sheet, and which is also characterized in that: the plating layer has a specific chemical composition; the plating layer includes an Fe-Al phase that is located at the interface with the base steel sheet, and a main layer that is located on the Fe-Al phase; in a cross-section of the main layer, the area ratio of a Mg-Al-Zn-Si intermetallic compound phase having an Al content of 10% by mass or more is 0.010% or more; the Fe-Al phase contains 3.0-15.0% by mass of Si and 2.0-15.0% by mass of Zn; and the adhesion amount of the plating layer is 20 g/m2 or more per one surface.
This steel material has a prescribed chemical composition. When the Al content in mass% is defined as [Al] and the N content is defined as [N], the [Al] and the [N] satisfy a prescribed relationship. In a cross section perpendicular to a rolling direction, if the length of a line segment connecting the center of gravity of the cross section and the surface of the cross section closest to the center of gravity is defined as d/2, when the position of d/2 in the direction of the center of gravity from the surface is defined as a d/2 part, and the position of d/4 in the direction of the center of gravity from the surface is defined as a d/4 part, the solid solution Al amount is 0.018 mass% or more and the solid solution N amount is 0.009 mass% or more in both the d/2 part and the d/4 part, the number density of MnS having an area of 1.0-10.0 μm2is 70.0 particles/mm2or less in the d/4 part, and the number density of MnS having an area exceeding 10.0 μm2is 4.0 particles/mm2 or less.
A sub-frame 10 for a vehicle is fixed to a vehicle body, and comprises a structural member which is curved and extends in a plan view from an upper direction of the vehicle body. The structural member is made of steel material, and cross-sectional shapes thereof in a direction perpendicular to the extension direction are closed cross sections and vary according to a position of the structural member in the extension direction.
θθθ is 1.30% or less. The average particle diameter of the cementite particles is 1.50 μm or less. The maximum particle diameter of the cementite particles is 5.00 μm or less. The spheroidizing rate of the cementite particles is 75% or greater.
A joint structure of an automobile frame member comprises a first member and a second member. The first member includes a top plate, two vertical walls, two first ridgeline portions, and a continuous flange. The second member includes a first wall surface facing an axial end portion of the first member, a second wall surface extended from the first wall surface to the other side from the first member side, and a second ridgeline portion sandwiched between the first wall surface and the second wall surface. The continuous flange has an interval h, between the second ridgeline portion and the top plate, satisfying -10 mm ≤ h ≤ 10 mm, and angles θ formed by a surface perpendicular to the top plate and the two vertical walls, respectively, each satisfy 20° ≤ θ ≤ 45°.
B62D 21/02 - Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
B60R 19/04 - Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section
Provided are a steel material and a pressure vessel that includes the steel material. The steel material has a specific chemical composition that results in α as given by the following formula being 4.0–16.0, the tensile strength is 590–930 MPa, the microstructure at 1/4 of the thickness from the surface includes lower bainite and martensite, the total area percentage of lower bainite and martensite is at least 15.0%, the total area percentage of upper bainite, lower bainite, and martensite is at least 90.0%, and the Mn concentration of a center segregation part at 1/2 of the thickness is no more than 2.00%. α=0.50×√[C]×(1+0.64[Si])×(1+4.10[Mn])×(1+0.27[Cu])×(1+0.52[Ni])×(1+2.33[Cr])×(1+3.14[Mo])
This steel material has a specific chemical composition resulting in α being 5.0-16.0 and β being 0.017 or less, has a tensile strength of 615-930 MPa, and has, at a site 1/4 of the thickness from the surface, a micro-structure which includes lower bainite and martensite, and in which the total of the area percentages of the lower bainite and the martensite is 15.0% or more, the total of the area percentages of upper bainite, the lower bainite, and the martensite is 90.0% or more, and the area percentage of retained austenite is less than 1.7%. α=0.50×√[C]×(1+0.64[Si])×(1+4.10[Mn])×(1+0.27[Cu])×(1+0.52[Ni])×(1+2.33[Cr])×(1+3.14[Mo]) β=[Mn]×[P]-[Mo]/100
Provided is a steel material having a specific chemical composition in which Ceq represented by formula (1) is not less than 0.350, wherein: tensile strength is 490-720 MPa; in the microstructure at a site which is at 1/4 of the thickness from the surface, a transformation structure generated at a low temperature has a total area ratio of not less than 70%; and average crystal grain size is not more than 25.0 μm. Formula (1): Ceq=[C]+[Mn]/6+[Ni]/15+[Cu]/15+[Cr]/5+[Mo]/5+[V]/5
Provided is a welded joint which has a specific chemical composition in which Ceq represented by formula (1) is 0.350 to 0.490 inclusive, and a tensile strength of 490 MPa to 720 MPa inclusive, wherein: the number density of inclusions having an equivalent circle diameter of 0.01 µm to 0.50 µm inclusive and containing Ti and N is 1.0 × 105or more per mm2 in a portion at 1/4 of the thickness and a portion at 1/2 of the thickness from the surface in the thickness direction; in the portion at 1/4 of the thickness and the portion at 1/2 of the thickness, the average particle diameter of inclusions containing Ti and N is 150 nm or less; and the effective crystal grain size in a region between the fusion line of the welded part and a position of the heat affected zone separated by 1 mm from the fusion line is 100.0 μm or less. Also provided is a pressure vessel which includes the welded joint. Formula (1): Ceq = [C] + [Mn]/6 + [Ni]/15 + [Cu]/15 + [Cr]/5 + [Mo]/5 + [V]/5
This grain-oriented electrical steel sheet is characterized in that the base steel sheet has a chemical composition containing, in mass %, Si:2.5-4.5%, Mn:0.01-1.00%, N:≤0.01%, C:≤0.01%, sol.A1:0.01%, S:≤0.01%, Se:≤0.01%, P:0.00-0.05%, Sb:0.00-0.50%, Sn:0.00-0.30%, Cr:0.00-0.50%, Cu:0.00-0.50%, Ni:0.00-0.50%, and Bi:0.0000-0.0100%, with the remainder including Fe and impurities, the magnetic flux density B8 in the rolling direction of the sheet is ≥1.93 T, a deformed region extending over the entire width of the sheet is periodically formed at an interval L of 3-30 mm, in a direction intersecting the rolling direction, this region has a width W of 0.2-30.6 mm, a protrusion having a maximum height Dprotrusion of 1-5 m is formed on one surface of this region, and a recessed part having a maximum depth Drecess of 1-4 μm is formed on the opposite surface.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
An Fe-based amorphous alloy according to one embodiment of the present disclosure has an amorphous structure and contains, in terms of at%, 8.0-18.0% B, 0-2.0% Si, 0.10-5.00% C, 0.10-3.50% P, 0-0.60% Mn, and 78.00-86.00% Fe, with the remainder being impurities.
C22C 45/02 - Amorphous alloys with iron as the major constituent
B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
H01F 1/147 - Alloys characterised by their composition
H01F 1/153 - Amorphous metallic alloys, e.g. glassy metals
The present application discloses a ceramic sintered body that exhibits both toughness and abrasion resistance. A ceramic sintered body according to the present disclosure contains a first compound and a second compound. The first compound is silicon carbide, and the second compound is a diboride of a Group 4 element. The proportion of the second compound in the ceramic sintered body is 50-70 mass%. In a case where a 300 µm x 300 µm area of a polished surface of the ceramic sintered body is divided into 400 15 µm x 15 µm compartments, and the areal ratio of the first compound is specified for each of the compartments, the coefficient of variation CV of the areal ratio of the first compound is more than 0.14 and less than 0.23.
C04B 35/58 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides
53.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
On a surface of the grain-oriented electrical steel sheet, a rate (a groove existence rate) of a part (a groove formation line) where a groove having a depth of 5 μm to 50 μm and a width of 10 μm to 300 μm exists among a total extension of magnetic domain control treatment lines which forms an angle of 0° to 45° with respect to an orthogonal-to-rolling direction and are arranged in a rolling direction is 50% or more in a first region which is a region where a β angle which is a deviation angle of a grain from a Goss orientation around an axis in the orthogonal-to-rolling direction is 1° or less, and the groove existence rate is less than 50% in a second region where the β angle is more than 2°.
In the grain-oriented electrical steel sheet according to an aspect of the present invention, a magnetic domain refinement treatment line, which is a part on which a magnetic domain refinement treatment is performed, exists in a magnetic domain control treatment lines which form an angle of 0° to 45° with respect to an orthogonal-to-rolling direction and are arranged in a rolling direction. It is preferable that the average magnetic domain width in an area, in which the magnetic domain refinement treatment line does not exist among the magnetic domain control treatment lines, and of which the length is 1 mm or more, is 500 μm or less. Alternatively it is preferable that the average magnetic domain width in an area, in which the magnetic domain refinement treatment line does not exist among the magnetic domain control treatment lines, and which includes two or more of magnetic walls, is 500 μm or less.
C21D 10/00 - Modifying the physical properties by methods other than heat treatment or deformation
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
55.
WOUND CORE PRODUCING APPARATUS AND WOUND CORE PRODUCING METHOD
This wound core producing apparatus (40) is a wound core producing apparatus (40), the wound core being formed by bending and laminating a steel sheet (21), the wound core producing apparatus (40) including a bending device (20) that bends the steel sheet (21), and a feed roll (60) that feeds the steel sheet (21) to the bending device (20), in which a diameter of the feed roll (60) is 5 mm to 500 mm, a pressure applied to the steel sheet (21) by the feed roll (60) is 0.4 MPa to 2.4 MPa, and a Shore hardness of an outer circumferential surface of the feed roll (60) measured at 45° C. is A38 or more and A90 or less.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
This steel sheet has a desired chemical composition and is such that in a metal structure at a position that is 1/4 of the sheet thickness from the surface, prior austenite grains having an aspect ratio of less than 2.0 constitute less than 20% in terms of area%, prior austenite grains having an aspect ratio of greater than or equal to 2.0 and less than 6.0 constitute greater than or equal to 40%, prior austenite grains having an aspect ratio of greater than or equal to 6.0 constitute less than 30%, bainite constitutes 70-95%, and martensite constitutes 5-30%.
2233 is 4.0 mass% or more and the content of crystal water is 5 mass% or more, is reduced with a reducing gas using a fluidized bed; and a fluidized bed heat treatment step in which the iron ore powder, in which at least a part thereof is metallized by the fluidized bed reduction step, is heat treated with a non-oxidizing gas using a fluidized bed. The temperature in the fluidized bed in the fluidized bed heat treatment step is higher than the temperature in the fluidized bed in the fluidized bed reduction step, and the gas flow rate of the non-oxidizing gas in the fluidized bed in the fluidized bed heat treatment step is 1.5 times or more higher than the gas flow rate of the reducing gas in the fluidized bed in the fluidized bed reduction step, or four times or more the minimum fluidization velocity of the fluidized bed in the fluidized bed reduction step.
A press device (20) is provided with punches (21, 22), pads (23, 24), a die (25), and a support mechanism (26). A first punch (21) includes a punch top surface (211). A second punch (22) includes a punch top surface (221), a punch shoulder (222), a punch side surface (223), and a punch flange surface (224). The die (25) includes a die bottom surface (251), a die shoulder (252), a die side surface (253), and a die flange surface (254). The support mechanism (26) supports the second punch (22) such that the punch shoulder (222) is disposed closer to the die bottom surface (251) side than the punch top surface (211). The support mechanism (26) is configured to move the second punch (22) relative to the first punch (21) in a pressing direction (D1).
This plated steel sheet includes a steel sheet, and a plated layer disposed on a surface of the steel sheet, in which the plated layer has a chemical composition containing, in mass%, Al: 10.0 to 25.0%, Mg: 3.0 to 10.0%, Fe: 0.01 to 2.0%, and Si: more than 0 to 2.0%, with a remainder including Zn and impurities, and a number density of Mg2Si phases having a major axis of 2 μm or more exposed on the surface of the plated layer is 3 to 150 per area of 10,000 μm2.
A hot-rolled steel sheet has a predetermined chemical composition, a microstructure at a location of ¼ of a sheet thickness and at a location of 100 μm from a surface comprising, in area %, one or more of martensite and tempered martensite: 95% or more in total, and ferrite, bainite and pearlite: 5% or less in total, and an average dislocation density at the location of 100 μm from the surface is 1.2 times or more of an average dislocation density at the location of ¼ of the sheet thickness.
In an automobile hood, further enhancement of pedestrian protection properties when a pedestrian collides with a rear part of the automobile hood is enabled. An inner panel 2 of an automobile hood 1 includes: a pedestal 7; a plurality of units 9 each including an inclined wall 12 rising from the pedestal 7, and a flange 11; and beads 21 and 22 including at least one of a structure for connecting together outer end portions 55 of the inner panel 2 in a height direction Z perpendicular to a sheet thickness direction of the inner panel 2 and a structure for connecting an outer circumferential portion 73 of the pedestal 7 and the outer end portion 55. A plurality of the beads 21 and 22 are provided, and are arranged on a rear portion 1a side of the inner panel 2.
A lap welded joint includes a plurality of steel sheets that are partially or entirely overlapped, a spot-welded portion that joins overlapping portions of two or more of the steel sheets, and an arc-welded portion that is disposed to temper a nugget of the spot-welded portion. One or more of the spot-welded steel sheets are high strength steel sheets having a tensile strength of 780 MPa or more. A portion in which a hardness measurement value of the nugget of the spot-welded portion is minimized is present between a center of the nugget and the arc-welded portion. A difference between a minimum value of the hardness measurement value of the nugget and a maximum value of the hardness measurement value of the nugget is equal to or greater than 25 HV.
A hot-dip plated steel material has a plating layer on a surface of a steel material, in which the plating layer contains Al: more than 22.5% and 50.0% or less, Mg: more than 3.0% and 15.0% or less, Ca: 0.03 to 0.6%, Si: 0.03 to 1.0%, Fe: 2 to 25%, and a remainder consisting of Zn and impurities, and, in an X-ray diffraction pattern of a surface of the plating layer, measured under conditions in which an X-ray output is a voltage of 50 kV and a current of 300 mA using a Cu-Kα ray, I1 obtained from an X-ray diffraction peak of Al0.5Fe1.5 is 1.1 or more, and I2 obtained from X-ray diffraction peaks of Zn, Al, and MgZn2 is 0.25 or less.
A hot-dip plated steel sheet has a plating layer, in which the plating layer contains Al: more than 30.0% and 50.0% or less, Mg: more than 5.0% and 15.0% or less, Si: more than 0.5% and 1.0% or less when Al is more than 30.0% and less than 35.0%, and 0.03% or more and 1.0% or less when Al is 35.0% or more and 50.0% or less, Fe: 0% or more and 5.0% or less, and a remainder consisting of Zn and impurities, and, in an X-ray diffraction pattern of a surface of the plating layer, I1 obtained from X-ray diffraction peaks of Zn, Al, and MgZn2 is 0.10 or less and I2 obtained from an X-ray diffraction peak of Al2O5Si is 1.05 or more.
A hot-dip plated steel sheet includes a hot-dip plated layer formed on a surface of a steel sheet, the hot-dip plated layer contains 4 to 22 mass % of Al and 1.0 to 10 mass % of Mg with a remainder including Zn and impurities, a pattern portion and a non-pattern portion are formed in the hot-dip plated layer, an element concentrated region containing an element M and an interface alloy layer containing Fe and Al are present at an interface between the steel sheet and the hot-dip plated layer in the pattern portion, an average concentration of the element M contained in the hot-dip plated layer present in the pattern portion and the element concentrated region is 0.0010 to 2 mass %, and in the element concentrated region, the element M is concentrated two or more times the hot-dip plated layer present in the pattern portion, or the element M is unevenly distributed.
A coating liquid for forming an insulation coating for grain-oriented electrical steel sheets, which contains boric acid and hydrated silicate particles containing aluminum, a method for producing a grain-oriented electrical steel sheet comprising applying the coating liquid to a grain-oriented electrical steel sheet after final annealing, and then performing a baking treatment, and a grain-oriented electrical steel sheet.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C23C 22/50 - Treatment of iron or alloys based thereon
In a forming method for processing a metal plate and a battery tray according to the present invention, a raw metal plate (10A) has a predetermined excess length at each edge part and a predetermined corner shape at a corner part. For the raw metal plate (10A), in a portion of a first edge part (15) that lies further toward a blank corner part (17) than a straight line (L11), the blank corner part (17), and a portion of a second edge part (16) that lies further toward the blank corner part (17) than a straight line (L21), an outer shape line (163) of the raw metal plate (10A) is located outside, namely on the side opposite to a bottom surface part (110C) relative to the polygonal line comprising a line segment (P1P3) and a line segment (P3P2).
An electromagnetic steel sheet with an adhesive coating film according to the present invention comprises: an electromagnetic steel sheet; and an adhesive coating film provided on at least a part of one surface or both surfaces of the electromagnetic steel sheet, the adhesive coating film containing a cross-linkable thermoplastic resin A and a thermoplastic resin B other than the cross-linkable thermoplastic resin A. The adhesive coating film has a hardness of 200-260 MPa. The adhesive coating film has a hardness of 200-300 MPa after heating at 200°C for 5 minutes.
B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
A battery unit (100) is provided with a plurality of cooling members (10) and a plurality of battery cells (20). Each of the cooling members (10) include a first member (11) and a second member (12). The first member (11) and the second member (12) are each formed of a metal plate. The second member (12), together with the first member (11), forms a space (13) into which a cooling liquid is supplied. Each of the battery cells (20) uses a metal can (21) as an exterior material. Each of the battery cells (20) is disposed between the space (13) of one of the cooling members (10) and the space (13) of another one of the cooling members (10). Each of the battery cells (20) is bonded to the first member (11) or the second member (12) in one of the cooling members (10) and/or another one of the cooling members (10).
H01M 10/647 - Prismatic or flat cells, e.g. pouch cells
H01M 10/653 - Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
H01M 10/6555 - Rods or plates arranged between the cells
H01M 10/6568 - Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
A battery unit (100) is provided with a battery tray (10), cooling members (20), and reinforcing members (30). Each of the cooling members (20) includes a top plate (21) facing a bottom plate (11) outside the battery tray (10), and a flange (22) joined to the bottom plate (11). The reinforcing members (30) are overlaid on and joined to the cooling members (20) on both sides in the longitudinal direction of the cooling members (20). Each of the cooling members (20) includes ridge portions (241, 242, 243, 244). Each of the reinforcing members (30) includes ridge portions (31, 32, 33, 34) formed so as to be respectively continuous with the ridge portions (241, 242, 243, 244). Each of the ridge portions (31, 32, 33, 34) extends in the longitudinal direction of the cooling members (20) to the outside of the battery tray (10).
H01M 10/647 - Prismatic or flat cells, e.g. pouch cells
H01M 10/651 - Means for temperature control structurally associated with the cells characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations
71.
ELECTROMAGNETIC STEEL SHEET WITH ADHESIVE COATING, LAMINATED CORE, AND METHOD FOR MANUFACTURING SAME
This electromagnetic steel sheet with an adhesive coating has an electromagnetic steel sheet and an adhesive coating provided on at least a part of one surface or both surfaces of the electromagnetic steel sheet. The adhesive coating contains a crosslinkable thermoplastic resin A and a thermoplastic resin B other than the crosslinkable thermoplastic resin A, has a glass transition temperature of 45-80°C, and a melt flow rate at 100°C of 1-25 g/10 min.
B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
The present invention provides an automotive suspension component that, with a novel configuration, has excellent impact resistance in a bent part. An automotive suspension component (1) according to the present invention comprises a bent part (2) which is formed from a steel sheet, said automotive suspension component (1) being characterized in that: the steel sheet has a specific chemical composition containing C, Si, Al, Ti, and Sn as essential components; the Vickers hardness of the bent part is not less than 250 HV; the peak of in-crystal-grain orientation difference of an inner surface layer of the bent part is 1.0-3.0 degrees; and the peak of in-crystal-grain orientation difference of an outer surface layer of the bent part is 2.0-4.0 degrees.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
74.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
This grain-oriented electrical steel sheet has a plurality of magnetic domain control processing lines formed on a surface thereof, said magnetic domain control processing lines extending in a direction that intersects the rolling direction, wherein when a first magnetic domain image is a magnetic domain image of the surface, a second magnetic domain image is a magnetic domain image of the same location as the first magnetic domain image after the grain-oriented electrical steel sheet has been subjected to annealing in which the same is held at 800°C for 240 minutes or longer and cooled to 50°C or below at an average cooling speed of 25°C/h or less to 200°C and then 100°C/h or less thereafter, magnetized to a magnetic density of 1.9 T or greater by applying an AC magnetic field, and demagnetized by attenuating the AC magnetic field, a first region is a region in which the magnetic domain width derived from the second magnetic domain image is greater than the magnetic domain width derived from the first magnetic domain image by 100 μm or more, and a second region is a region other than the first region, the line density of the magnetic domain control processing lines in the second region in units of mm/mm2is smaller than the line density of the magnetic domain control processing lines in the first region in units of mm/mm2.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
75.
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
This grain-oriented electromagnetic steel sheet has a plurality of magnetic domain control processing lines on the surface thereof. When virtual lines are provided at 5-mm intervals inside an evaluation region, the standard deviation of the intervals of the magnetic domain control points, which are the intersecting points between the virtual lines and the magnetic domain control processing lines, is 1.25 mm or more, and an average value of the magnetic domain widths measured along the virtual lines is 600 μm or less for at least one virtual line.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
76.
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
AllDrAllDrDr| is an average value of absolute values of β angles at magnetic domain control points that are intersection points of a plurality of virtual lines with the magnetic domain control processing line, the virtual lines being provided in parallel at 2-mm intervals along the rolling direction of the grain-oriented electromagnetic steel sheet. Also provided is a method for producing a grain-oriented electromagnetic steel sheet, the method comprising: a step of acquiring a magnetic domain image of an original sheet for a grain-oriented electromagnetic steel sheet; a step of determining a magnetic domain control processing region on the basis of the distribution of the magnetic domain widths in the magnetic domain image; and a step of applying a magnetic domain control process to the magnetic domain control processing region determined on the basis of the distribution of the magnetic domain widths.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
77.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME
This grain-oriented electrical steel sheet is provided with, on the surface thereof, a plurality of magnetic domain control processing lines that extend in a direction intersecting the rolling direction. When a square evaluation region in which the length of one side is 50 mm and one side is parallel to the rolling direction is set on the surface, and imaginary lines that are parallel to the rolling direction and that have a length of 50 mm are set inside the evaluation region at 5 mm intervals in a direction perpendicular to the rolling direction, in at least one of the imaginary lines, the maximum value of the spacing, in the rolling direction, between adjacent intersections from among the plurality of intersections between the imaginary line and the plurality of magnetic domain control processing lines is over 20 mm, and the average value of the magnetic domain width measured along the imaginary line is 600 μm or below.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
78.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
79.
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET
All Dr All Dr Dr | is the average value of absolute values of an α angle at a magnetic domain control point that is an intersection point of the magnetic domain control processing line and a plurality of virtual lines set at 2 mm intervals in parallel along a rolling direction of the grain-oriented electromagnetic steel sheet. A method for manufacturing a grain-oriented electromagnetic steel sheet according to another aspect of the present disclosure comprises: a step for measuring an α-angle distribution on the surface of an original sheet of a grain-oriented electromagnetic steel sheet; a step for identifying a region having an α-angle absolute value equal to or smaller than 5°; and a step for applying magnetic domain control processing to the region having the α-angle absolute value equal to or smaller than 5°.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
80.
LAMINATED CORE, ROTOR, AND MANUFACTURING METHOD OF LAMINATED CORE
This laminated core is formed integrally by laminating a plurality of steel sheets including a first steel sheet and a second steel sheet. The first steel sheet is disposed as an outermost layer on one end side along the central axis and including a first exposed surface. The second steel sheet is disposed as an outermost layer on the other end side along the central axis and including a second exposed surface. In this laminated core, a difference between a maximum value and a minimum value in a distribution of a thickness that is a distance between the first exposed surface and the second exposed surface is 0.25 mm or less.
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
B32B 3/26 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
B32B 37/06 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
B32B 37/10 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using direct action of vacuum or fluid pressure
B32B 37/12 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
H02K 15/035 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets on the rotor
This metallic coated steel includes a steel material and a metallic coating layer. The metallic coating layer has an average chemical composition including Al: 0.2% to less than 4.0%, Mg: more than 4.0% and less than 12.5%, Ca: 0.15% to less than 3.00%, Zn: 65% or more, and impurities. In an any perpendicular cross section (in a thickness direction) in the metallic coating layer, a metallurgical structure observed in a scanning electron microscope observed visual field contains, in terms of area fraction, an MgZn2 phase: 10 to 40%, an Al—Zn phase: 0 to 15%, an Al phase: (Zn<10%): 0 to 5%, a CaZn13 phase: 1.0 to 15%, and a total of a [ternary eutectic structure of Al/MgZn2/Zn] and a [binary eutectic structure of MgZn2/Zn]: 30% or more.
A surface-treated steel sheet includes: a base steel sheet; a plated layer formed on the base steel sheet and containing 50 mass % or more of Zn and 0.3 mass % or more of Mg; and a chemical conversion coating formed on the plated layer. The chemical conversion coating contains a silicon compound, P and F, and Mg, an average Si concentration of the chemical conversion coating is 10 mass % or more, the chemical conversion coating includes an F—Mg concentrated layer having an Mg concentration of 1.50 mass % or more and 40.00 mass % or less and an F concentration of 0.50 mass % or more and 5.00 mass % or less in a region in contact with an interface between the chemical conversion coating and the plated layer, a thickness of the F—Mg concentrated layer is 1.0 nm or more, and an average Mg concentration is less than 0.50 mass % and an average F concentration is less than 0.50 mass % in a region of the chemical conversion coating excluding the F—Mg concentrated layer.
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
C21D 9/46 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for sheet metals
C23C 2/06 - Zinc or cadmium or alloys based thereon
C23C 2/28 - Thermal after-treatment, e.g. treatment in oil bath
C23C 22/36 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH < 6 containing fluorides or complex fluorides containing also phosphates
This hot-stamping formed body has a predetermined chemical composition, in a surface layer region, an area ratio of bainite of more than 10%, a maximum value of pole density of a texture of 4.0 or less, and a deboronization index of 0.05 or more.
A rear structure (100, 100A) of a vehicle body is provided with a floor panel (30) and a first frame unit (10 or 20). The first frame unit (10 or 20) includes a pair of first side frames (11, 12 or 21, 22) and a first cross member (13 or 23). The first side frames (11, 12 or 21, 22) and the first cross member (13 or 23) are welded to the floor panel (30) to form, together with the floor panel (30), first closed cross-sectional parts (14, 15 or 24, 25), respectively. In the first closed cross-sectional parts (14, 15 or 24, 25), the minimum value of the Vickers hardness of the heat-affected zone of a welded part (44 or 45) of the first frame unit (10 or 20) welded to the floor panel (30) is 70% or more of the Vickers hardness of the non-welded part of the first frame unit (10 or 20).
B62D 65/00 - Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
85.
ELECTROMAGNETIC STEEL SHEET HAVING ADHESIVE COATING, LAMINATED CORE, AND METHOD FOR MANUFACTURING SAME
This electromagnetic steel sheet having an adhesive coating has an electromagnetic steel sheet and an adhesive coating provided on at least a part of one surface or both surfaces of the electromagnetic steel sheet. The adhesive coating contains a crosslinkable thermoplastic resin A and a thermoplastic resin B other than the crosslinkable thermoplastic resin A, and has a vibration elastic modulus at room temperature of 130-200 GPa and a vibration elastic modulus at 100°C of 100-200 GPa.
B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
This electromagnetic steel sheet with an adhesive coating film has: an electromagnetic steel sheet; and an adhesive coating film provided on at least a part of one surface or both surfaces of the electromagnetic steel sheet, the adhesive coating film including a crosslinkable thermoplastic resin A and a thermoplastic resin B other than the crosslinkable thermoplastic resin A. When a rigid pendulum test is conducted on the adhesive coating film, the peak temperature found on a logarithmic decrement curve obtained from the measurement is 130-150°C, and P1/P2, which is the peak ratio between a logarithmic decrement peak value P1 of the logarithmic decrement curve obtained after heating at 200°C for 1 minute and a logarithmic decrement peak value P2 of the logarithmic decrement curve obtained before such heating, is 0.70-1.30.
B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
The present invention provides a molded body having excellent impact resistance in a bent part by virtue of a novel configuration. A molded body (1) according to the present invention is characterized by having a bent part (2) formed from a steel plate, wherein the molded body (1) is characterized in that the M value of the average Taylor factor of the inner surface layer (21) of the bent part (2) is 3.300 or less.
This grain-oriented electrical steel sheet has magnetic domain refinement treatment lines on the surface thereof. If the relationship between the sheet thickness t (mm) and an iron loss W17/50 (W/kg) satisfies W17/50<1.350t+0.450, the peak-peak value of the magnetostriction at a magnetic flux density of 1.7 T is denoted as λ1 pp, and the peak-peak value of the magnetostriction at a magnetic flux density of 1.9 T is denoted as λ2 pp, λ2 pp/λ1 pp<2.2 is satisfied. Preferably, the magnetic domain refinement treatment lines represent the thermal strain or grooves.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
89.
GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR
This grain-oriented electrical steel sheet includes, on the surface, a plurality of magnetic domain control processing lines extending in a direction intersecting the rolling direction. When, on said surface, a square evaluation region having a side length of 50 mm and having one side parallel to the rolling direction is set and when virtual lines which are parallel to the rolling direction and which each have a length of 50 mm are set at 5 mm intervals in a direction perpendicular to the rolling direction inside the evaluation region, the grain-oriented electrical steel sheet is configured such that, in at least one of the virtual lines, the maximum value of intervals in the rolling direction between adjacent intersections of a plurality of intersections between the virtual line and the plurality of magnetic domain control processing lines is greater than 20 mm, the average value of magnetic domain widths measured along the virtual line is 600 μm or less, and the plurality of magnetic domain control processing lines are tensile stress introduction lines into which tensile stress of 40 MPa or more is introduced.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
90.
GRAIN-ORIENTED ELECTROMAGNETIC STEEL SHEET AND PRODUCTION METHOD OF SAME
This grain-oriented electromagnetic steel sheet comprises, on the surface thereof: a plurality of magnetic domain control processing lines extending in a direction intersecting the rolling direction; a magnetic domain control region that is a region within 10 mm from each of the magnetic domain control processing lines; and a non-magnetic domain control region that is a region separated by more than 10 mm from all of the magnetic domain control processing lines. The average value |βNDr| of the absolute value of the β angle in the non-magnetic domain control region and the average value |βDr| of the absolute value of the β angle in the magnetic domain control region satisfy |βDr|-|βNDr| ≤ -0.1°.
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
There is provided a coating composition for a laminated steel sheet containing: (meth)acrylic resin particles A that contain constituent units derived from a monomer having a carboxy group at an amount of 1 mass% to less than 20 mass% with respect to all constituent units, and constituent units derived from a monomer having a self-crosslinking group at a ratio of 0.1-7 mass% with respect to all constitutional units, and that has a glass transition temperature of 55°C or above; a water-soluble (meth)acrylic resin B; and water. The ratio of the contained mass of the (meth)acrylic resin particles A to the contained mass of the water-soluble (meth) acrylic resin B is 95/5-85/15.
C09D 133/00 - Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereofCoating compositions based on derivatives of such polymers
C09D 133/14 - Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
92.
ELECTROMAGNETIC STEEL SHEET WITH ADHESIVE COATING FILM, LAMINATED CORE, AND MANUFACTURING METHODS FOR THOSE PRODUCTS
This electromagnetic steel sheet with an adhesive coating film comprises: an electromagnetic steel sheet; and an adhesive coating film provided on at least a part of one surface or both surfaces of the electromagnetic steel sheet. The adhesive coating film contains (meth)acrylic resin particles A containing a constituent unit derived from a monomer having a self-crosslinking group, and a water-soluble (meth)acrylic resin B. The gel fraction of the adhesive coating film is greater than 20 mass% and 70 mass % or less.
B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
93.
ELECTRICAL STEEL SHEET WITH ADHESIVE COATING FILM, LAMINATED CORE, AND METHODS FOR MANUFACTURING THOSE
This electrical steel sheet with an adhesive coating film has an electrical steel sheet and an adhesive coating film that is provided on at least a part of one surface or both surfaces of the electrical steel sheet. The adhesive coating film contains (meth)acrylic resin particles A which contain a constituent unit that is derived from a monomer having a self-crosslinkable group, and a water-soluble (meth)acrylic resin B, and the weight average molecular weight of the adhesive coating film is 150,000 to 250,000.
B32B 15/08 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
H01F 1/147 - Alloys characterised by their composition
H01F 27/245 - Magnetic cores made from sheets, e.g. grain-oriented
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
C21D 8/12 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Balls of steel; Building boards of metal namely, ceiling boards, floor boards; Cast iron, unwrought or semi-wrought; Cast steel; Containers of metal for storage; Crash barriers of metal for roads; Fittings of metal for building, namely, metal pipe fittings for buildings, metal joinery fittings for buildings; Framework of metal for building; Indium; Ingots of common metal; Iron ores; Iron, unwrought or semi-wrought; Iron wire; Joists of metal; Manhole covers of metal; Nickel; Niobium; Pillars of metal for buildings; Railroad ties of metal; Rails of metal; Railway material of metal, namely, metal materials for railway construction; Reinforcing materials of metal for building; Construction materials, namely, metal sheet piles; Sheet metal; Silver plated tin alloy; Soldering wire of metal; Steel alloys; Steel pipes; Steel sheets; Steel strip; Steel, unwrought or semi-wrought; Steel wire; Tantalum; Tin; Tinfoil; Sheets of tin plate; Titanium; Tubes of metal; Tungsten ores; Vanadium; Rods of metal for welding; Non-electrical wire of common metal; Wire rope; Steel bars; Steel strands; Non-electrical steel cables; Heavy steel plates; Hot-rolled steel sheets and coils; Cold-rolled steel sheets and coils; Electrical steel sheets, namely, steel sheets for use in the manufacture of electricity-conducting goods; Galvanized steel sheets and coils; Copper sheets; Common metal alloys for further manufacture of battery electrodes; Aluminum pipes; Aluminum and its alloys; Metal billets; Blooms (metallurgy); Bolts of metal; Containers of metal in the form of bottles for compressed gas or liquid air; Branching pipes of metal; Brass and its alloys; Metal building materials; Building panels of metal; Metal castings; Castings, foils, powder, and rolled, drawn or extruded semi-finished articles of titanium or its alloys; Chromium; Clad steel plates and sheets; Cladding of metal for construction and building; Common metals and their alloys; Common metals for further manufacture, unwrought or semi-wrought, not included in other classes; Couplings of metal for use with pipeline for carrying oil and gas; Drain pipes of metal; Ducts and pipes of metal for central heating installations; Metal fish plates in the nature of hardware for fastening rails; Joinery fittings of metal for windows; Fittings of metal for pipework; Flashing of metal, for building; Metal forgings; Metal cylinders for compressed gas or liquids, sold empty; Grilles of metal, namely, wire nets for rockslide retention; Guard rails of metal; Irons and steels; Magnesium; Metal materials for building construction or for structure, namely, metal materials for pre-fabricated buildings; Metal springs and valves (not including machine elements); Metal cable wire; Non-electric metal wires rods for brazing and welding; Metallic road signs, not luminous nor mechanical; Metals and their alloys; Ores of metal; Molybdenum; Nails and screws of metal; Non-electric cables and wires of common metal; Nonferrous metals and their alloys; Nuts and screws made of metal; Metal oil pipe; Petroleum and casing pipes of metal; Pilings of metal; Pipe joints of metal; Pipelines of metal; Pipes and tubes of metal; Posts of metal for electric lines; Rare-earth alloys for magnets; Rolled steels; Roof coverings of metal; Roof flashing of metal; Roofing of metal; Ropes of metal; Semi-products of steel; Iron sheets; Slabs of metal; Metal springs and valves, not being parts of machines; Stainless-steel coils; Steel; Steel frames for building; Steel joists for use in building; Steel or metallic water and gas pipe; Steel poles; Steel for use in manufacturing tires; Steels, heat-resistant, acid-resistant and corrosion-resistant; Titanium bars; Zinc and its alloys; Zinc-coated steel sheets; Brass sheets Bending machines; Compressed air machines; Compressed air pumps; Condensing machines for chemical processing; Metalworking machines; Construction machines; Steel converting machines for use in steel works to convert iron into steel goods to the order and specification of customers; Cutting machines for metalworking; Shaping machines for metalworking; Gasifiers; Grinding machines; Heat exchangers being parts of chemical processing machines; Electric soldering machines for metalworking machining; Electric machines and apparatus for polishing metal surface; Punching presses for metalworking; Industrial machine presses for chemical processing purposes; Machine parts, namely, rolling mill cylinders; Rolling mills; Machines, namely, sewage pulverizers; Waste compacting machines; Industrial waste disposers (machines); Gas welding machines; Welding machines, electric; Robots for metal working; Continuous casting machines; Machines for giving a pickling treatment on the surface of metal; Machines for tin-plating on the surface of metal; Annealing machines for metalworking; AC motors and DC motors not for land vehicles, and parts therefor, namely, gears, magnetic cores, electromagnets and coils; Linear actuators for air vehicles; Aeronautical engines; Aeronautical motors; Automobile crank shafts and camshafts; Axles for machines; Earth moving machines, namely, backhoes and hydroexcavators; Bearings, as parts of machines; Bearings for transmission shafts, being parts of machines; Speed reducers or variators, namely, variable speed drives for machines; Belts for machines; Injection molding machines; Machine parts, namely, steam tubing parts of boilers for industrial use; Brakes for industrial machines; Vehicle parts, namely, power valves for feeding carburetors; Carburetors; Casting machines, for non-ferrous metals; Centrifuges (machines); Chemical processing machines and apparatus, namely, emulsifying machines, extracting machines and acid pickling machines; Classifier, namely, sorting machine for chemical processing; Chemical processing classifying machine for classifying solids suspended in liquids; Coal and ore dressing plants, namely, coal and ore sorting machines; Steam condensers, being parts of machines; Pneumatic controls for machines, engines and motors; Converters for steelworks, namely, converter furnaces for use in the metal smelting and steelmaking process; Conveyors of coal and ore for steelmaking process; Copper rolls for textile printing, being a part of industrial or commercial printing machines; Couplings for machines; Cranes, crane shafts and crane cylinders; Crank shafts for construction machines, land vehicles, airplanes and vessels; Crawler-shovel-cranes; Crusher machines; Crushing rolls and roll housings for use in crusher machines; Gears for machines; Parts of machines, namely, brake drums; Machines for processing electric circuit boards; Machines for manufacturing electrical wire and cable; Electric motors not for land vehicles; Exhaust manifold for engines; Extrusion moulding machines; Electric fans, ventilators and blowers for motors and engines; Machines for feeding water for engine boilers; Laminating machines for industrial use; Air filters for mechanical purposes, oil filters for mechanical purposes; Industrial machine presses and shearing machines for metal fabrication; Mechanical forging presses; Gear and pinion coupler and draft gear not included in other classes not for land vehicles; Gear boxes other than for land vehicles; Heat exchangers being parts of machines; Containers of metal for compressed gas; Multi-purpose high pressure washers; Hydraulic controls for machines, motors and engines except for land vehicles; Hydraulic door openers and closers (parts of machines); Hydraulic presses; Hydraulic pumps; Hydraulic valves; Impeller shaft for compressors; Liquid crystal panel etching machines; LNG carburetors; LPG carburetors; Machine coupling and transmission components except for land vehicles; Mechanical presses; MEMS (micro electro mechanical systems) coating machines; MEMS (micro electro mechanical systems) etching machines; Motor-driven sintering machines for the chemical industry; Motors and engines except for land vehicles; Motors, electric, other than for land vehicles; Mufflers for motors and engines; Nautical engines; Non-electric prime movers, not for land vehicles, in the nature of engines and air turbines; Oil refining machines; Pistons for use in machines; Pumps for machines; Radiators (cooling) for motors and engines; Reduction gears for machines; Machine parts, namely, bearing roll housings; Machine parts, namely, roll mill bearings; Rolls for rolling mills; Semiconductor manufacturing machines; Shaft couplings as parts of machines; Part for machines, namely, shaft connectors; Shafts for pumps; High frequency motor spindles with high frequency electric converters and power supply units; Ships' gears and pinions; Shock absorbers for machines; Shovel; Sintering machines for chemical processing; Steam engine boilers; Catalytic converters used in industrial machinery for processing steel; Steel mill cranes; Machines and lines composed thereof for the production and processing of steel sheets; Straightening machines for metal wires, rods, plates, sheets and pipes; Threading machines; Transmission gears for machines; Transmission shafts, other than for land vehicles; Transmissions for machines; Transmissions, other than for land vehicles; Valves as machine components; Waste crushing machines Aerial conveyors; Aeronautical apparatus, namely, landing gears; Aeroplanes; Air bags (safety devices for automobiles); Aircraft and their parts and fittings, namely, landing gears, brakes, wheels, tires, airscrews for aircrafts; Air-cushion vehicles; Railway rolling stock; Aircrafts, automobiles, bicycles, motorcycles, rolling stocks for railways and ships, wheels, wheel bearings, axles, axle bearings, motors, stabilizers, drive shafts, propeller shafts, bogie trucks, gears, gear couplings, brakes, brake discs, brake calipers, air springs, coil springs, leaf springs, couplers, shock absorbers, bumpers, transmissions, clutches, and screw propellers; Anti-theft alarms for vehicles; Anti-theft devices for vehicles; Automobile crankshafts; Automobiles and structural parts therefor; Axle boxes for locomotives; Axle journals for aircrafts, automobiles, bicycles, motorcycles, railway rolling stocks and ships; Axles for aircrafts, automobiles, bicycles, motorcycles, railway rolling stocks and ships; Axles for land vehicle wheels; Railway car bodies; Railway bogies and railway rolling stock bogies; Brake linings for land vehicles; Brake segments for land vehicles; Brake shoes for land vehicles; Brakes for land vehicles; Brakes for vehicles; Parts of railway rolling stock, namely, buffers for buffer and chain couplings; Cable cars; Camshafts for use as parts of vessels, aircrafts, railway rolling stocks, automobiles and two-wheeled motor vehicles; Chassis of railway cars; Railway rolling stock parts, namely, command gear units comprising gears, gear shafts and gear covers; Connecting rods for land vehicles, other than parts of motors and engines; Draft gears for use as parts of vessels, aircrafts, railway rolling stocks, automobiles and two-wheeled motor vehicles; Trailer hitch coupler for automobiles; Coupling chains for railway rolling stock; Railway couplings for land vehicles; Crankshafts for use as parts of vessels, aircrafts, railway rolling stocks, automobiles and two-wheeled motor vehicles; Part and fittings of railway rolling stock, namely, draft gears; Driveshaft for use as parts of vessels, aircrafts, railway rolling stocks, automobiles, two-wheeled motor vehicles and bicycles; Driving gear units, namely, steering wheel attachment comprised of an electric motor and drive gear and a ring gear; Land vehicle parts, namely, drive gears; Electric leather seat belts for land vehicles; Railway rolling stock parts in the nature of couplings; Metal flanges for railway wheel tires as components of railway wheel tires; Fork lift trucks; Gear and pinion coupler and draft gear for use as parts of vessels, aircrafts, railway rolling stocks, automobiles, two-wheeled motor vehicles and bicycles; Gear boxes for land vehicles; Gear units comprising of gears, gear shafts and gear covers for use as parts of vessels, aircrafts, railway rolling stocks, automobiles, two-wheeled motor vehicles and bicycles; Gearing for land vehicles; Gears and pinion for vehicles; Railway handcars; Parts of railway cars, namely, handstraps; Hydraulic circuits for vehicles; Inner tubes for vehicle tires; Vessel suspension parts, namely, leaf springs for use as parts of aircrafts, railway rolling stocks, automobiles, two-wheeled motor vehicles and bicycles; Leather seat belts for use in vehicles; Transmission mechanisms for land vehicles; Metal wheels and steel wheels for railway rolling stock; Motor coaches; Motorcycles; Non-electric mobile railcar movers; Parachutes; Parts and accessories for railway freight and passenger cars, namely, wheels, axles, andwheel-axle units; Pedicabs; Propeller shafts for use as parts of vessels, aircrafts, railway rolling stocks, automobiles and two-wheeled motor vehicles; Puller cars for mining; Pusher cars for mining; Railway couplings; Railway freight cars; Reduction gears for land vehicles; Relaxation control apparatus and instruments for the different levels between the rail cars and the station platforms, namely, air springs for railway cars; Rickshaws; Rolling stock for railways; Ropeways for cargo or freight handling, namely, aerial conveyers; Rotative power transmission belts connecting engines and radiator cooling fans for land vehicles; Brake rotor discs for land vehicles; Seat covers for vehicles; Land vehicle parts, namely, shafts, axles, spindles, axle and wheel bearings, shaft couplings, shaft connectors, power transmissions and gearing; Ships; Ships' steering gears; Ships' hulls included in this class; Shock absorbers and shock absorbing springs for land vehicles; Shock absorbers for railway cars and motorcars; Shock absorbing springs for vehicles for land vehicles and two wheeled vehicles; Parts for railway rolling stock, namely, solid rolled metal wheels; Space vehicles; Land vehicle parts, namely, spindle ensembles with brake rotors; Suspension springs for automobiles; Suspension springs for railway rolling stock; Suspension springs for land vehicles; Stabilizer bars for land vehicle suspensions; Steel rims for railway rolling stock wheels; Railway rolling stock parts, namely, steel tires; Structural parts of marine vessels, namely, stern frames and shafts; Suspension shock absorbers for vehicles; Suspension springs for motor cars; Tires of automobiles; Traction engines for land vehicles; Railway rolling stock hitches and interlocking, durable polyethylene pieces for filling with sand or salt, specially adapted for use in railway rolling stock as weight for extra traction; Tractors; Transmission shafts for land vehicles; Trucks; Undercarriages for railway cars; Unloading vehicles for tilting railway freight cars, namely, unloading tippers for tilting railway freight cars; Valve shafts for land vehicles; Couplers for use as parts of vessels, aircrafts, railway rolling stocks, automobiles and two-wheeled motor vehicles; Vehicle wheels; Wheel rims; Wheel-axle units for vehicles and aircrafts; Wheelbarrows; Wheelchairs; Railway car wheels
95.
ELECTRIC RESISTANCE WELDED STEEL PIPE FOR AN AUTOMOTIVE PART, AND METHOD OF PRODUCING AUTOMOTIVE PART
An electric resistance welded steel pipe for an automotive part, the pipe comprising a base metal portion and an electric resistance welded portion, wherein the base metal portion has a chemical composition comprising, in terms of % by mass: from 0.42 to 0.48% of C, from 0.01 to 0.20% of Si, from 0.10 to 0.70% of Mn, from 0 to 0.030% of P, from 0 to 0.030% of S, from 0.005 to 0.050% of Al, from 0.005 to 0.040% of Ti, from 0.0005 to 0.0050% of B, and a balance comprising Fe and impurities, wherein a steel structure of the base metal portion is a ferrite-pearlite mixed structure, and wherein the base metal portion has a hardness of from 110 to 150 Hv.
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C21D 1/18 - HardeningQuenching with or without subsequent tempering
C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
This hot-stamping formed body has a predetermined chemical composition, in an interior region, a standard deviation of grain sizes of prior austenite grains of 5.0 μm or less, in a surface layer region, an area ratio of bainite of more than 10%, a maximum value of pole density of a texture of 4.0 or less, and a deboronization index of 0.05 or more.
θθθθθ obtained by analyzing cementite in the pearlite via energy-dispersive X-ray analysis is not less than 0.360. (1): Fn1=7C+0.5Si+Mn+3Cr-10Ti In formula (1), C, Si, Mn, Cr, and Ti are substituted by the content of the respective elements in mass%.
C21D 9/30 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for crankshaftsHeat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for camshafts
In the present invention, a threaded joint (100) comprises a pin (10) and a box (20). The pin (10) includes a pin seal surface (12) and a tapered male thread part (13). The tapered male thread part (13) includes male thread parts (131, 132). The first male thread part (131) is disposed on the side of the pin seal surface (12) near the pipe body (31). The second male thread part (132) is disposed on the side of the first male thread part (131) near the pipe body (31). The box (20) includes a box seal surface (22) and a tapered female thread part (23). The tapered female thread part (23) includes female thread parts (231, 232). The first male thread part (131) and the first female thread part (231) have a first taper ratio (T1). The second male thread part (132) and the second female thread part (232) have a second taper ratio (T2) that is smaller than the first taper ratio (T1).
This spot welding structure comprises: a first lap joint; a second lap joint; a lap part in which one or more ends of a metal plate of the first lap joint and one or more ends of a metal plate of the second lap joint are overlapped; a main nugget joining the first lap joint and the second lap joint in the lap part; a metal plate-form member that is superposed on the first lap joint, the second lap joint, and the lap part; and a plurality of sub-nuggets joining the plate-form member and the first lap joint, and joining the plate-form member and the second lap joint. The number of metal plates to which the main nugget is joined is three. An indentation of the main nugget is provided only to the metal plate included in the first lap joint or the second lap joint. The plate-form member is located outside the main nugget. The sub-nuggets are located outside the lap part.
This hot-rolled steel sheet has a desired chemical composition and microstructure, an average sphere equivalent radius of alloy carbides in the ferrite is 0.5 nm or more and less than 5.0 nm, an average number density of the alloy carbides in the ferrite is 3.5×1016/cm3 or more, an E value that indicates periodicity of the microstructure is 10.7 or more, and an I value that indicates uniformity of the microstructure is 1.020 or more, a standard deviation of a Mn concentration is 0.60 mass % or less, and a tensile strength is 980 MPa or more.
