Abstract

The present disclosure relates to a hollow shaft for an electric motor, which has a hollow cylindrical shaft body, wherein the shaft body has at least two rotationally symmetrical hollow components, which are positioned one inside the other and joined together using soldering, wherein a first hollow component has a central through opening having an inner diameter and a further hollow component is inserted in the first hollow component, wherein the further hollow component is joined to the inner circumference of the through opening of the first hollow component while bearing thereon.

IPC Classes  ?

• F16C 3/02 - ShaftsAxles

Abstract

The present invention relates to a perforating gun tube, characterized in that the tube is made of a steel alloy comprising, in addition to iron, the following alloying elements, expressed in mass percent: The present invention relates to a perforating gun tube, characterized in that the tube is made of a steel alloy comprising, in addition to iron, the following alloying elements, expressed in mass percent: C 0.12-0.22% Si 0.3-1.0% Mn 1.0 - 4% Cr 0.5 - 2% Mo 0.1 -1%, V 0.05 -0.2% Ti 0.02 - 0.1% and B 0.001 - 0.01% The present invention relates to a perforating gun tube, characterized in that the tube is made of a steel alloy comprising, in addition to iron, the following alloying elements, expressed in mass percent: C 0.12-0.22% Si 0.3-1.0% Mn 1.0 - 4% Cr 0.5 - 2% Mo 0.1 -1%, V 0.05 -0.2% Ti 0.02 - 0.1% and B 0.001 - 0.01% and impurities due to melting, and that the tube has a yield strength, RP0,2 , in the range of 750 to 1100 MPa. In addition, a perforating gun having such a perforating gun tube is described.

IPC Classes  ?

• E21B 43/116 - Gun or shaped-charge perforators
• C22C 38/38 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
• C22C 38/32 - Ferrous alloys, e.g. steel alloys containing chromium with boron
• C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
• C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon

Abstract

The invention concerns a method for production of a steel tubular product (1), in particular an airbag tubular product, with the following steps: a) provision of a steel tube (2), b) shaping of the steel tube (2) into a pre-geometry (3), wherein in an end region (4), an outer diameter (5) of the steel tube (2) is reduced by axial movement into an outer tool, c) calibration of an inner diameter (7) of the pre-geometry (3), wherein the pre-geometry (3) is still laid in the outer tool, and an inner mandrel, with an outer diameter corresponding to the inner diameter (7) of the calibrated pre-geometry (3), is introduced into the end region (4) of the pre-geometry (3), and the pre-geometry (3) is pressed against the outer tool such that the inner diameter (7) of the pre-geometry (3) is calibrated by shaping, d) removal of the pre-geometry (3) from the outer tool (5) and removal of the inner mandrel from the pre-geometry (3), e) axial movement of the pre-geometry (3) into a drawing tool with a roll-in contour having a pot-like concavity, with simultaneous shaping of the pre-geometry (3) into the tubular product (1) with a rotationally symmetrical outlet opening (8) positioned centrally in the end face, f) removal of the tubular product (1) from the drawing tool.

IPC Classes  ?

• B60R 21/261 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means other than bag structure to diffuse or guide inflation fluid

Abstract

The invention relates to a hollow shaft for an electric motor, the hollow shaft having a hollow cylindrical shaft body (2), wherein: the shaft body (2) has at least two rotationally symmetrical hollow components (6, 7, 8, 9, 10), which are positioned one inside the other and are joined to each other by soldering; a first hollow component (6) has a central through-opening (11) having an inside diameter D1, and an additional hollow component (9, 10) is inserted into the first hollow component (6); the additional hollow component (9, 10) is joined to the first hollow component such that the additional hollow component is in contact with the inner periphery D1 of the through-opening (11) of the first hollow component (6).

IPC Classes  ?

• F16C 3/02 - ShaftsAxles

Abstract

The invention relates to a method for producing and testing a high-strength tube product of steel, having the following steps: a) providing a steel tube, b) forming the steel tube to afford the tube product, with the steel tube being formed at least in one of its end regions, c) testing the inner wall and the outer wall in at least one formed end region of the tube product for defects by means of a test probe, which is matched to at least one formed end region and comprises at least one eddy current sensor for testing the inner wall and at least one eddy current sensor for testing the outer wall of the at least one formed end region of the tube product, with multiple sensors being provided on at least one arm and/or multiple sensors being provided on an inner part.

IPC Classes  ?

• G01N 27/90 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
• G01N 33/20 - Metals

Abstract

The present invention relates to a high strength steel tube. In addition, the invention relates to a method of manufacturing a high strength steel tube. The method is characterized in that a hot rolled pre-tube is subjected to at least two hardening steps with a final tempering step, the pre-tube is heated to a quenching temperature of at least Ac3 temperature for hardening and is heated to a tempering temperature in the range of 400 to 600° C. for tempering.

IPC Classes  ?

• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
• C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
• C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
• C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
• C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
• C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C21D 6/00 - Heat treatment of ferrous alloys
• C21D 1/42 - Induction heating
• C21D 1/18 - HardeningQuenching with or without subsequent tempering
• C21D 1/30 - Stress-relieving

Goods & Services

Anchors of metal; Anchor bushings of metal; Anchor flanges of metal; Reinforcing materials of metal for building; Reinforcement rods of metal; Bright steel tubes; Bright steel bars; Penstock pipes of metal; Flanges of metal [collars]; Shaped metal portions; Shaped metal sections; Hollow steel bars; Alloys of metal; Couplings of metal for tubing; Metal pipes for liquid and gas transfer; Pipe spacers of metal; Bends (pipe -) of metal [other than parts of machines]; Tubes of metal; Pipe muffs of metal; Pipe nuts of metal; Pipework of metal; Steel in bar form; Steel; Steel tubes; Poles of metal; Extrusions of metal; Common metals and their alloys.

Abstract

An inner diameter of a first end of a tubular component, positioned in relation to a first die, is reduced through relative movement between the tubular component and the first die such as to produce a first conical area between first and second ends of the tubular component. The first conical area is then formed through relative movement of a second die to create in a longitudinal section of the first conical area an outer circumferential embossment and an inner bead having an inner diameter smaller than the inner diameter of the first end. The first end is widened through insertion of an inner tool, while the tubular component is supported on an outside in a mold cavity of an outer tool. An inner contour with an internal stop is formed as an outer surface of the first end of the tubular component rests flatly in the mold cavity.

IPC Classes  ?

• B21D 39/04 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders of tubes with tubesApplication of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by platingTube expanders of tubes with rods

Goods & Services

Common metals and their alloys; Pipes and tubes of metal; Metal pipes for liquid and gas transfer; Steel tubes, Tubes of precision steel; Bends (pipe -) of metal [other than parts of machines]; Shaped metal portions, Especially Hollow mouldings Of steel; Pipes and tubes of metal, Steel tubes, For hydrogen applications; Hydrogen-resistant steels and pipes of metal; Steels and pipes of metal, in particular for use for hydrogen distribution and transmission, production of hydrogen, hydrogen transport, storage of hydrogen, hydrogen conversion in the field of mobility, electricity, heat supply and industry.

Abstract

The present invention relates to a tube product, namely a perforating gun hollow carrier, consisting of a steel alloy with martensitic matrix, characterized in that it has a yield strength Rp0, 2 of at least 900 MPa, and that the steel alloy besides iron and impurities caused by melting has the following alloying elements: C 0.15-0.6%; Si 1.4-2.6%; Cr 2.0-4.0%; Mn 0.15-2.0%; Mo 0.2-0.6%; N<0.015%; and at least one of the alloying elements Nb, V and Ti in sum of ≥0.01% and the tube product has been subjected to a quenching and partitioning heat treatment. Furthermore, the invention relates to a method of manufacturing such a tube product.

IPC Classes  ?

• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
• C21D 1/18 - HardeningQuenching with or without subsequent tempering
• C21D 6/00 - Heat treatment of ferrous alloys
• C22C 38/00 - Ferrous alloys, e.g. steel alloys
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
• C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
• C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium

Abstract

A tubular element for a gas pressure container of an airbag system of a motor vehicle, wherein the tubular element (10) consists of a material which, in addition to iron and impurities due to melting, comprises the following alloying elements in the ranges indicated in percent by weight:

IPC Classes  ?

• C22C 38/54 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
• B21C 37/15 - Making tubes of special shapeMaking the fittings
• B21D 15/04 - Corrugating tubes transversely, e.g. helically
• B21D 17/02 - Forming single grooves in sheet metal or tubular or hollow articles by pressing
• B21H 7/18 - Making articles not provided for in groups , e.g. agricultural tools, dinner forks, knives, spoons grooved pinsRolling grooves, e.g. oil grooves, in articles
• B21K 21/12 - Shaping end portions of hollow articles
• B32B 1/08 - Tubular products
• B32B 3/30 - 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 characterised by a layer formed with recesses or projections, e.g. grooved, ribbed
• B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
• B32B 15/18 - Layered products essentially comprising metal comprising iron or steel
• B60R 21/261 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means other than bag structure to diffuse or guide inflation fluid
• C21D 7/13 - Modifying the physical properties of iron or steel by deformation by hot working
• C21D 9/14 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
• C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
• C22C 38/12 - Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium or niobium
• C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
• C22C 38/18 - Ferrous alloys, e.g. steel alloys containing chromium
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
• C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
• C22C 38/32 - Ferrous alloys, e.g. steel alloys containing chromium with boron
• C22C 38/40 - Ferrous alloys, e.g. steel alloys containing chromium with nickel
• C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
• C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
• C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
• F16L 9/00 - Rigid pipes
• F16L 9/02 - Rigid pipes of metal
• F16L 9/22 - Pipes composed of a plurality of segments
• B60R 21/26 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow

Abstract

The present invention relates to a method for manufacturing a tubular product, characterized in that the tubular product is manufactured from steel comprising chromium in the range of 2.5 to 9.5 wt. % and silicon in an amount of more than 1.0 wt. %, and the method comprises the steps of austenitizing, quenching and tempering at a tempering temperature in the range of 300° C. to 550° C. Furthermore, the invention concerns a tubular product produced by this method.

IPC Classes  ?

• C21D 1/22 - Martempering
• C21D 1/63 - Quenching devices for bath quenching
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
• C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
• C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
• C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes

Abstract

wherein the structure of the steel alloy comprises beside martensite portions of 10-40 Vol.-% retained austenite, wherein the energy absorption capacity expressed by the product of tensile strength (Rm) and uniform strain (Ag) is higher than 12,000 MPa % and the steel alloy has a minimal tensile strength of 1000 MPa. In addition, the invention relates to a steel tube product with high energy absorption capacity and good formability, which is characterized in that it at least partially consists of such a steel alloy.

IPC Classes  ?

• C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
• C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
• C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C21D 9/14 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
• C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
• C21D 6/00 - Heat treatment of ferrous alloys
• 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
• E21B 17/00 - Drilling rods or pipesFlexible drill stringsKelliesDrill collarsSucker rodsCasingsTubings

Abstract

This invention concerns a tubular element for a gas pressure vessel of an airbag module, in particular of a vehicle, wherein the tubular element (1) consists of high-strength steel, has a first and a second end (17, 18) and from the first end (17) to the second end (18) the tubular element (1) has an undeformed section (11), a transition section (12) and a tapering section (13) and on the tapering section (13) at least one radially outwardly extending collar (14) is formed, characterized in that the collar (14) is separated from the transition section (12) by a first length section (130) having an outer diameter (A1) smaller than the outer diameter (A2) of the collar (14) and the wall thickness of the collar (14) is greater than the wall thickness of the first length section (130). Furthermore, the invention concerns a gas pressure vessel and a process for manufacturing a tubular element according to the invention (1).

IPC Classes  ?

• B21C 1/24 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles by means of mandrels
• B21C 37/16 - Making tubes with varying diameter in longitudinal direction
• B21D 41/00 - Application of procedures in order to alter the diameter of tube ends
• F16L 9/00 - Rigid pipes
• B60R 21/26 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow

Abstract

The invention relates to a pipe element for a gas pressure vessel of an airbag system of a motor vehicle, the pipe element (10) having at least one first length portion (100, 101) and at least one recess (11) extending in the circumferential direction, characterized in that the pipe element (10) has at least one second length portion (102), which is formed by the recess (11), which extends over at least part of the circumference of the pipe element (10), that the second length portion (102) lies between two first length portions (100, 101), that in at least one first length portion (100, 101) the outer radius (A1) of the pipe element (10) is greater than the smallest outer radius (A2) of the at least one second length portion (102), that the pipe element (10) has a tensile strength of > 920 MPa, that the wall thickness (W2) of the pipe element (10) in the at least one second length portion (102) is greater than or equal to the wall thickness (W1) in at least one first length portion (100, 101) of the pipe element (10), that the degree of reduction of the outer radius (A2) in the recess (11) lies in the range of 5 to 35% with respect to the outer radius (A1) of at least one first length portion (100, 101), and that the pipe element (10) consists of a material that comprises, in addition to iron and impurities resulting from the smelting process, the following alloying elements in the ranges specified in weight percent: C 0.05 - 0.2%; Si ≤ 0.9%; Mn 0.2 - 2.0%; Cr 0.05 - 2%; Mo < 0.5%; Ni < 1.0%; Nb 0.005 - 0.10%; Al < 0.07%; Ti < 0.035%; and B < 0.004%.

IPC Classes  ?

• C21D 7/13 - Modifying the physical properties of iron or steel by deformation by hot working
• B21C 37/15 - Making tubes of special shapeMaking the fittings
• B21C 37/16 - Making tubes with varying diameter in longitudinal direction
• B21D 13/00 - Corrugating sheet metal, rods or profiles, or bending sheet metal, rods or profiles into wave form
• B21D 15/04 - Corrugating tubes transversely, e.g. helically
• B21D 17/00 - Forming single grooves in sheet metal or tubular or hollow articles
• B21D 22/02 - Stamping using rigid devices or tools
• B21D 28/28 - Perforating, i.e. punching holes in tubes or other hollow bodies
• B21D 51/12 - Making hollow objects characterised by the structure of the objects objects with corrugated walls
• B21D 51/24 - Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles
• B60R 21/00 - Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
• C21D 9/14 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
• C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
• C22C 38/32 - Ferrous alloys, e.g. steel alloys containing chromium with boron
• C22C 38/40 - Ferrous alloys, e.g. steel alloys containing chromium with nickel
• F17C 1/00 - Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
• C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
• C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
• C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
• C22C 38/54 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron

Abstract

The invention relates to a housing of a gas generator module for an airbag system of a motor vehicle, wherein the housing is of substantially tubular design and has a tube portion in which a plurality of stamped formations pointing into the interior of the housing are introduced over an external circumference of the housing, wherein the stamped formations in the interior of the tube portion have a stop for an internal component.

IPC Classes  ?

• B60R 21/26 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
• B60R 21/217 - Inflation fluid source retainers, e.g. reaction canistersConnection of bags, covers, diffusers or inflation fluid sources therewith or together

Abstract

The present invention relates to a piston cylinder system for a working device, wherein the piston cylinder system comprises at least one tubular element and at least one piston which is guided in the at least one tubular element. The piston cylinder system is characterized in that at least one tubular element consists of high-manganese-steel and the inner side of the at least one tubular element is machined.

IPC Classes  ?

• F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
• F15B 15/28 - Means for indicating the position, e.g. end of stroke
• F16F 9/32 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium Details
• F16J 10/04 - Running facesLiners
• F15B 15/16 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type

Abstract

An outer tube for a perforating gun is provided that includes an inner wall and an outer wall and also a wall thickness (D) and a length (L), wherein the outer tube has a hardness over its entire longitudinal extent along the length (L) and its transverse extent along the wall thickness (D), wherein the hardness of the outer tube is reduced, in at least one region, to an extent (T) measured from the outer wall to the inner wall, wherein, in this region, the outer tube has a reduced hardness (HV) on its outer wall, said reduced hardness being reduced in this region by at least 5% in relation to the hardness (H) of the inner wall.

IPC Classes  ?

• E21B 43/116 - Gun or shaped-charge perforators
• F42D 1/02 - Arranging blasting cartridges to form an assembly
• F42D 1/00 - Blasting methods or apparatus, e.g. for loading or tamping

Abstract

In a method of producing a tubular structure for a gas generator, a tubular body is positioned relative to a forming device having inner and outer tools, which are moved relative to an end portion of the tubular body until an inner circumferential surface of a neck of the end portion rests against a support surface of the inner tool to reduce a diameter of the end portion by a tool contour of the outer tool and thereby form a shoulder. The outer tool is held in position upon the end portion and the neck inner circumferential surface is calibrated by a calibrating surface on a calibrating member of the inner tool while an outer circumferential surface of the neck is supported by the outer tool, as the inner tool is removed from the end portion. The outer tool is then removed from the end portion of the tubular body.

IPC Classes  ?

• B21D 41/04 - ReducingClosing
• F16L 9/00 - Rigid pipes
• F16L 9/02 - Rigid pipes of metal
• B60R 21/26 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
• B60R 21/38 - Protecting non-occupants of a vehicle, e.g. pedestrians using means for lifting bonnets
• B60R 22/46 - Belt retractors, e.g. reels with means to tension the belt in an emergency

Abstract

A tubular product includes a tubular body made of steel and having a tube wall which includes an opening. The opening is produced by a high-speed stamping process at a stamping speed of more than 4 m/s. The opening is situated in the tube wall in a region thereof which has a tensile strength Rm>800 MPa.

IPC Classes  ?

• F16L 9/00 - Rigid pipes
• B21D 28/28 - Perforating, i.e. punching holes in tubes or other hollow bodies
• B60R 21/00 - Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
• F16L 9/02 - Rigid pipes of metal
• F16L 55/11 - Plugs
• B21D 35/00 - Combined processes according to methods covered by groups
• B21D 51/16 - Making hollow objects characterised by the use of the objects

Abstract

characterized in that the zinc layer (11) comprises at least three tiers (110), the sealing layer (13) has organic compounds which are based on plastics and the sealing layer (13) on the passivation layer (12) has a layer thickness between 0.5 and 15 μm. Furthermore the invention relates to a method for manufacturing such tube product (1).

IPC Classes  ?

• B32B 1/08 - Tubular products
• 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
• B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
• B32B 15/085 - 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 comprising polyolefins
• B32B 15/082 - 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 comprising vinyl resinsLayered 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 comprising acrylic resins
• B32B 15/09 - 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 comprising polyesters
• B32B 15/18 - Layered products essentially comprising metal comprising iron or steel
• C25D 5/36 - Pretreatment of metallic surfaces to be electroplated of iron or steel
• C25D 5/10 - Electroplating with more than one layer of the same or of different metals
• C25D 7/04 - TubesRingsHollow bodies
• C25D 5/48 - After-treatment of electroplated surfaces
• C25D 5/50 - After-treatment of electroplated surfaces by heat-treatment
• C23C 2/06 - Zinc or cadmium or alloys based thereon
• C23C 2/38 - WiresTubes
• 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
• F16L 58/08 - Coatings characterised by the materials used by metal
• F16L 58/10 - Coatings characterised by the materials used by rubber or plastics

Abstract

11 of at least −40° C., and an outer circumference U1. The tube element also includes at least one second longitudinal portion and/or additional longitudinal portions, which extend axially from the first longitudinal portion. The second longitudinal portion or the additional longitudinal portions and the first longitudinal portion are formed from a seamless or welded single-piece tube made of a uniform material, and more specifically from a hot-rolled or cold-drawn tube.

IPC Classes  ?

• B60R 21/26 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
• B60R 21/268 - Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous release of stored pressurised gas
• B60R 21/00 - Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
• C21D 6/00 - Heat treatment of ferrous alloys
• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
• F17C 1/00 - Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/06 - Ferrous alloys, e.g. steel alloys containing aluminium
• C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
• C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
• C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
• C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
• C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

Abstract

An outer tube for a perforating gun is provided that includes an inner wall and an outer wall and also a wall thickness (D) and a length (L), wherein the outer tube has a hardness over its entire longitudinal extent along the length (L) and its transverse extent along the wall thickness (D), wherein the hardness of the outer tube is reduced, in at least one region, to an extent (T) measured from the outer wall to the inner wall, wherein, in this region, the outer tube has a reduced hardness (HV) on its outer wall, said reduced hardness being reduced in this region by at least 5% in relation to the hardness (H) of the inner wall.

IPC Classes  ?

• E21B 43/116 - Gun or shaped-charge perforators
• F42D 1/00 - Blasting methods or apparatus, e.g. for loading or tamping

Abstract

A pipe system for oil country tubular goods (OCTG) and a method of manufacturing the OCTG pipe system is disclosed. The pipe system includes at least one OCTG pipe having a pipe body, the pipe body having at least one connection end formed in unipartite and materially integral manner with the pipe body for coupling to a second OCTG pipe. The OCTG pipe is formed in seamless fashion from a hardenable steel alloy, and the connection end has a yield strength higher than the yield strength of the pipe body.

IPC Classes  ?

• F16L 15/00 - Screw-threaded jointsForms of screw-threads for such joints
• F16L 9/02 - Rigid pipes of metal
• C21D 1/26 - Methods of annealing
• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
• F16L 21/00 - Joints with sleeve or socket

Abstract

The invention relates to steel alloy with high energy absorption capacity and good deformability, comprising, in addition to melting-related unavoidable impurities and iron, the following components in weight percentage: C 0.05 – 0.6% total of Cr + 2*Ti + 3*(Mo+V+Nb) + 4*W = 2 - 7 %, wherein the structure of the steel alloy has components of 10 – 40 vol% residual austenite, in addition to martensite, wherein the energy absorption capacity expressed by the product of tensile strength (Rm) and uniform elongation (Ag) is greater than 12,000 MPa% and the steel alloy has a minimum tensile strength of 1000 MPa. In addition, the invention relates to a tubular steel product with high energy absorption capacity and good deformability, which is characterised in that same consists at least partially of a steel alloy of this type.

IPC Classes  ?

• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
• C22C 38/18 - Ferrous alloys, e.g. steel alloys containing chromium
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
• C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
• F16B 33/00 - Features common to bolt and nut
• F16B 35/00 - Screw-boltsStay boltsScrew-threaded studsScrewsSet screws
• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
• E21B 17/00 - Drilling rods or pipesFlexible drill stringsKelliesDrill collarsSucker rodsCasingsTubings

Abstract

The invention relates to a perforating gun used for hydraulic fracturing applications in a wellbore and has an outer tube having several recesses of a second kind. The recesses of a second kind are configured to absorb shock waves from a shape charge in the perforating gun to reduce the numbers of cracks that form on the perforating pun. In some embodiments, the recesses of a second kind have a variety of shapes and sizes to aid in the absorption of shock waves.

IPC Classes  ?

• E21B 43/116 - Gun or shaped-charge perforators

Abstract

0.2 in the heat-affected zone (14) of at least 640 MPa and a tensile strength Rm in the heat-affected zone of at least 850 MPa and by at least the tubular element (10) consisting of a steel alloy consisting, in weight percent: balance iron and impurities resulting from smelting.

IPC Classes  ?

• C22C 38/38 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
• C22C 38/32 - Ferrous alloys, e.g. steel alloys containing chromium with boron
• C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
• C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
• C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
• C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
• B60K 17/22 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft

Abstract

The present invention relates to a pipe product (1), comprising a main pipe (10) composed of a steel alloy having an inner circumferential surface and an outer circumferential surface, wherein the main pipe (10) has a coating system (100) on at least part of the circumferential surfaces, which coating system has the following layer structure: - zinc layer (11) having a predominant zinc fraction; - passivation layer (12), which is free of Cr(VI); - sealing layer (13). The pipe product is characterized in that the zinc layer (11) comprises at least three strata (110), the sealing layer (13) has organic compounds based on plastics, and the sealing layer (13) on the passivation layer (12) has a layer thickness between 0.5 and 15 µm. The invention further relates to a method for producing such a pipe product (1).

IPC Classes  ?

• C25D 5/10 - Electroplating with more than one layer of the same or of different metals
• C25D 5/48 - After-treatment of electroplated surfaces
• C25D 5/50 - After-treatment of electroplated surfaces by heat-treatment
• C25D 7/04 - TubesRingsHollow bodies

Goods & Services

Common metals and their alloys; Steel; Stainless steels and other rust-proof, acid-resistant steels; Finished rolled steel products made from the aforesaid metals, alloys and steels, in particular hot and cold-rolled bands and sheets; Roll clad steel; Sheets and bands of metal; Pipes and tubes of metal, steel sheets, steel strips, steel buildings, steel alloys, steel pipes and tubes, pipe bends of metal; Hollow moulded components of metal; Motor vehicle reinforcements, steel profile components, pressed, drawn, stamped, cast and forged parts of metal, and hot-formed and tempered steel parts, in particular for the automotive industry; Turning and milling parts of metal; Screws and slugs of metal. Vehicles; Bodywork and structural components for vehicles; Chassis and chassis parts for vehicles; Bumpers for automobiles; Vehicle trains and Wheel suspensions for vehicles; Tubular vehicle components, in particular drive shafts, vehicle axles, instrument panel supports and impact beams, and parts therefor; Stabilisers for vehicles; Track rods for motor vehicle axles; Steering gears, Steering linkages for vehicles; Brakes for vehicles, and parts and fittings therefor; Springs for vehicle suspension systems and shock absorbers for automobiles and fittings therefor; Filler necks; Chassis, and components and fittings therefor; Transmissions for vehicles; Power trains and parts therefor for vehicles; Drive trains and components therefor for vehicles; Chassis frames for vehicles; Wheel suspensions and Their parts, In particular steering devices, Transverse links; Wheel suspension systems and parts therefor for vehicles, in particular automobiles; Axles and axle assemblies and parts therefor for vehicles; Axles and cardan shaft for motor vehicles.

Abstract

The invention relates to a gas pressure container (1), in particular for an airbag system of a motor vehicle, comprising a tube element (10) with a high bursting resistance when internal pressure is being applied. The tube element (10) consists of a steel alloy, and a first longitudinal portion (11) of the tube element has a tensile strength Rm,11 higher than (>) 800 MPa, a transition temperature Tu,11 of at least -40 °C, and an outer circumference U1. The tube element (10) comprises at least one second longitudinal portion (12) and/or additional longitudinal portions (13, 16) which extend axially from the first longitudinal portion (11). The second longitudinal portion (12) or the additional longitudinal portions (13, 16) and the first longitudinal portion (11) are formed from a seamless or welded single-piece tube made of a uniform material, in particular a hot-rolled or cold-drawn tube. The second longitudinal portion (12) or the additional longitudinal portions U13,16 have an outer circumference U12, U13 which is smaller than the outer circumference U11 of the first longitudinal portion (11). The invention is characterized in that the second longitudinal portion (12) and/or the additional longitudinal portion (13) of the tube element (10) has a transition temperature Tu,12, Tu,13 lower than -50 °C and lower than the transition temperature Tu,11 of the first longitudinal portion (11).

IPC Classes  ?

• B60R 21/00 - Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks

Goods & Services

Metal pipes, steel pipes, in particular for perforating guns, for oil-field and gas-field exploitation, oil and gas transport pipes of metal; steel alloys, steel plates, steel strips, rods of steel, sectional steel, hollow shaped components of steel, containers (tanks) of metal, containers of metal, armour plate, armour.

Goods & Services

Pipes and tubes of metal, electrogalvanised steel pipes and tubes.

Goods & Services

Pipes and tubes of metal, electrogalvanised steel pipes and tubes.

Abstract

Use of a steel alloy for well pipes of perforating units for perforation of borehole casings, with the steel alloy comprised, in mass-%, of Carbon (C) 0.12 -0.25 Manganese (Mn) 0.5 -2.0 Silicon (Si) 0.1 -0.5 Nitrogen (N) 0.006 -0.015 Sulfur (S) <0.005 Chromium (Cr) 0.1 -1.5 Molybdenum (Mo) <0.3 Nickel (Ni) <1.0 Vanadium (V) <0.25 Niobium (Nb) 0.010 -0.15 Titanium (Ti) 0.02 -0.06 Boron (B) 0.001 -0.006 Calcium (Ca) <0.0025 and iron as well as impurities resulting from smelting as remainder, wherein the steel alloy is heated at a heating rate of 1-100 K/s to an austenitizing temperature between 10 to 50 °C above its transformation temperature Ac3, and held at this austenitizing temperature between 0.1 and 10 minutes and austenitized, subsequently quenched at a quenching rate of >50K/s, so as to adjust a martensite content of >95 %, wherein the remainder is formed of lower bainite, wherein the structure is then tempered starting from room temperature between 1 and 25 minutes at temperatures between 280 °C and 700 °C, and finally cooled in air or quenched in water to room temperature, wherein the steel has a tensile strength Rm ranging from 600 MPa to 1,350 MPa at transverse notch impact toughnesses in a range between 210 and 70 J/cm2 at room temperature, wherein the product of tensile strength and transverse notch impact toughness lies in the strength range between 750 MPa and 1,200 MPa in a range of 141,000 to 165,000 MPa*J/cm2.

IPC Classes  ?

• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
• C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
• C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
• C22C 38/32 - Ferrous alloys, e.g. steel alloys containing chromium with boron