The invention relates to a method for feeding lubricant during hot rolling, in which the surfaces of the rolling rolls are fed with a lubricating emulsion, characterized in that said lubricating emulsion, consisting of a lubricating oil having a viscosity between 10 cSt and 400 cSt at 40° C., mixed with water, is directed onto the surfaces of the rolling rolls via at least one lubricant feed nozzle, at a temperature above 0° C. but below 25° C.
B21B 27/06 - Lubricating, cooling, or heating rolls
B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
A press-forming device has a punch (2), a die (7) which relatively moves with respect to the punch (2), a strain amount measuring means (8) which is provided inside a member to be controlled and measures a strain amount of the aforesaid member to be controlled which occurs in accordance with press-forming, when at least one of the punch (2) and the die (7) is made the aforesaid member to be controlled, and a strain amount control means (9) which is provided in the aforesaid member to be controlled and controls the strain amount of the aforesaid member to be controlled which occurs in accordance with press-forming. The strain amount control means (9) controls a drive amount of the aforesaid member to be controlled so that the strain amount measured by the strain amount measuring means (8) is in a predetermined range during forming. Thereby, reduction in a surface strain, improvement in shape fixability or the like of a press formed product can be achieved.
B21C 51/00 - Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses
B21D 55/00 - Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
A computer performs press forming analysis based on a shape of a formed product or of a member, a blank holder force, a friction coefficient, a tensile strength of a material, a yield strength, a stress-strain relation, and a sheet thickness, as press forming conditions, to calculate sheet thickness distribution and post-formation strain distribution of the formed product. The computer also performs performance analysis based on the sheet thickness distribution, the post-formation strain distribution, and the shape of the formed product or of the member, as state amounts of the formed product. This calculate performance of the member. The computer repeats the calculations performed in the process from the first step through the second step a predetermined number of times, with at least one of the press forming conditions being changed, to output an optimum press forming condition that gives a maximum value or a target value of the performance
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
19 - Non-metallic building materials
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
39 - Transport, packaging, storage and travel services
40 - Treatment of materials; recycling, air and water treatment,
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Common metals and their alloys, steels, stainless steels,
carbon steels, coated steels namely coated or tempered
steels, chrome-plated steels, galvanized steels,
electro-galvanized steels, prelacquered steels, coloured
steels, aluminium-coated steels; cast iron, iron, scrap,
tinplate, iron for direct reduction, direct-reduced iron;
ores, raw or processed ores; metal building materials,
laminated or shaped metal building materials such as heavy
sections, joists, sheet piles, girders, reinforcing
materials of metal for concrete, metal cladding plates for
construction, metal flooring, floor slabbing of metal, metal
partitions, metal multi-layered panels, metal sidings, metal
claddings and covers, steel vats; transportable buildings of
metal, metal shelters and parts of shelters; shaped
structures for residential use and small buildings for work
purposes; materials of metal for railway tracks rails and
accessories; non-electric cables and wires, soldering wire,
barbed wire, steel wool; tubes and pipes made of metal;
non-electrical locksmithing articles; metal hardware;
metallic grates and screens, metal fences, latticework and
wire gauze, whether coated or not; metal springs; metal wire
drawing, bolt and nail industry products; sheets and plates
of metal, multi-layered sheet metals, multi-layered metal
products, namely sheets and plates of metal; armour plating;
ferrules; frames of metal for building; metal tanks, metal
containers, metal boxes including welded metal boxes and
their components such as welded box liners, rings and
sealing caps of metal, metal cans including cans for drinks,
metal food cans, and metal lids for the above, packaging of
common metal and tinplate, foundry moulds of metal; iron and
steelworks products for foundry use, namely billets, sheets,
plates of metal, foils, strips, blanks, hoops, coils, shaped
strips, bars, girders, joists, belts, pins, tubes, wire,
cables, blocks, ingots, forge ingots, extra-heavy oxygen cut
parts namely heavy sheets and plates; steel balls; slabs;
heavy metal products, namely forged, moulded, cast,
die-cast, pressed, welded or machined metal pieces, used in
all industries. Machinery and machine tools, namely rolling mills, rolling
mill cylinders, continuous metal casting machines, machines
for cutting and slicing, machines for forming, oxygen
cutting, milling, electric welding, stubbing, drawing
metals, sheets and plates of metal, steel converters; motors
and engines other than for motor-driven land vehicles and
their component parts; couplings and transmission
components. Apparatus and instruments for scientific use, for weighing,
measuring, signalling, monitoring, for instruction and
education; apparatus and instruments for conducting,
distributing, transforming, accumulating, regulation or
control of electric current; apparatus for recording,
transmission or reproduction of sound or images; magnetic,
optical, image and sound recording media, CDs; measuring
apparatus and instruments, for checking, testing, testing
and inspection of the quality of materials, especially iron
and steel products; data processing equipment such as
computer software; multimedia training tools magnetic,
optical, image and sound media. Vehicles and apparatus for locomotion by land, sea and
water; bodywork and bodywork components; bumpers, bonnets,
suspensions, vehicle crossmembers, chassis, wheels, metal
axles, rear and front drives of vehicles; engines for land
vehicles. Non-metallic construction materials, sheet metal, slabs,
plates, sidings, flooring, roofing, cladding panels,
sandwich panels, shaped sections, multilayer panels,
partitions, all these goods being not of metal; non-metallic
frameworks for building; transportable constructions, not of
metal, non-metallic shelters and parts of shelters; shaped
structures for residential use and small buildings for work
activities not made of metal; non-metallic rigid pipes for
building; non-metallic monuments. Non-electrical utensils and receptacles) for household and
kitchen use; non-electrical utensils and receptacles)
intended for cooking and heating; bottles, drinking vessels,
cans, flasks (not of precious metal); nonmetallic boxes,
including biscuit tins, for sandwich lunches, bread, soap,
tea; aerosols, parts and components for aerosols (metal cans
for aerosol spraying, caps, spring caps, valves) for
non-medical use. Air, rail, maritime and road transport of goods, air, rail,
maritime and road transport of goods, especially of steel
and metal materials; delivery of goods; packaging of goods;
storage and warehousing of goods; storing of ores, metals
and alloys; transportation by air, land and sea. Treatment of materials; treatment of ores, steel, base
metals and their alloys; all treatments of metals and all
mechanical, thermomechanical or chemical transformation of
the properties and characteristics of metals, direct
reduction of steel, metal tempering, finishing of metal
surfaces, brazing, casting, anodizing, chromium plating,
sintering, galvanization, addition of phosphate, grinding,
shaping, tinning, galvanizing, nickel plating, laminating,
armor plating, cutting, polishing, magnetization, cladding,
punching, stripping finishes, welding of metals, lining of
metals, recycling of metal products; treatment of materials
in the process of manufacturing metal goods such as forging,
pressing, deburring, machining, laminating and shaping of
metals, vacuum treatment, nitrogen case-hardening, assembly
of metal shapes; boilermaking. Education; technical training and non-technical; editing and
publishing of books, reviews, pamphlets, instruction and
teaching manuals; education and publishing and electronic
publication of books and periodicals; film production, clips
and videotapes; production of radio and audiovisual
programmes; holding of symposia, conferences, seminars,
conventions; organization of exhibitions for cultural or
educational purposes; organization of professional fairs
other than for commercial or advertising purposes; sports
and cultural activities; organization of competitions
(education and entertainment); organization of games. Scientific and technological services and research and
design relating thereto, namely valuations, estimates and
scientific and technological investigations, consultancy
services; industrial analysis and research services, namely
research and development of new products, chemical research,
technical and mechanical research; design and development of
computer software; client-base services, namely scientific
and technological advice, information and assistance;
advice, information and assistance in materials testing,
mechanics research, and technical projects study; technical
and scientific advice, information and assistance for
improving the quality of goods and services in the field of
metals, steels and their applications; expert opinions and
evaluations in the field of metals, steels and their
applications; advice, information and assistance over the
choice and use of steels; expert opinions (evaluations) on
steels and their applications; advice, information and
advice on building especially in connection with the choice
and use of steels; the drawing up of building plans;
mechanical engineering research; design (development),
development of computer software designed for the iron and
steel industry; design of global solutions for the building
industry.
5.
Method of supplying lubricating oil in cold-rolling
controlling at least one of the emulsion supply, emulsion concentration, emulsion temperature, and plateout length so that the estimated oil film thickness matches with the target oil film thickness.
B21B 27/06 - Lubricating, cooling, or heating rolls
B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
6.
Method of supplying lubrication oil in cold rolling
The present invention provides a method of supplying lubrication oil in cold rolling for stable rolling without heat scratches or slip and achieving high productivity and improvement of the unit consumption of lubrication oil, that is, a method of supplying lubrication oil in cold rolling by supplying a predetermined kind of emulsion lubrication oil comprised of a mixture of rolling oil and water at the rolling stand inlet from nozzles, the method characterized by measuring or estimating the pressure in the lubrication nozzle pipe (lubrication nozzle pressure), controlling the lubrication nozzle pressure of the rolling stand where lubrication is susceptible to become excessive with the predetermined emulsion lubrication oil to 0.5 MPa or more, and, while doing so, supplying the lubrication oil to the roll bite inlet of the stand by direct injection.
B21B 27/06 - Lubricating, cooling, or heating rolls
B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
7.
System, method, software arrangement and computer-accessible medium for press-forming of materials
A system, method and software arrangement are provided for generating press-formed parts having a more consistent quality based on improved determination of processing conditions. For example, an apparatus can be configured to compare actual performance values of material properties provided by a material property database with standard values, and to adjust forming conditions such as a forming speed and a blank -holder pressure in accordance with the compared result. A control arrangement can be provided to control a press-forming device using the adjusted forming conditions. Accordingly, it may be possible to reduce occurrences of defects such as cracks and wrinkles when press-forming materials, and to obtain products having consistent quality and substantially identical shapes.
The invention relates to a process for manufacturing a corrosion-resistant cold-rolled sheet of iron-carbon-manganese austenitic steel, comprising the following steps: a sheet whose chemical composition comprises, the contents being expressed by weight: 0.35%≦C≦1.05%, 16%≦Mn≦24%, the balance of the composition consisting of iron and inevitable impurities resulting from its smelting, is provided; said sheet is cold-rolled; and a recrystallization annealing treatment is carried out on said sheet in a furnace containing a gas chosen from gases that are reducing with respect to iron, the parameters of said annealing being chosen in such a way that said sheet is covered on both its sides with an essentially amorphous (Fe,Mn)O oxide sublayer and with an external crystalline manganese oxide (MnO) layer, the total thickness of these two layers being equal to or greater than 0.5 microns.
A hot-rolled austenitic iron/carbon/manganese steel sheet, the strength of which is greater than 1200 MPa, the product P (strength (in MPa)×elongation at break (in %)) of which is greater than 65 000 MPa % and the nominal chemical composition of which comprises, the contents being expressed by weight: 0.85%≦C≦1.05%; 16%≦Mn≦19%; Si≦2%; Al≦0.050%; S≦0.030%; P≦0.050%; N≦0.1%, and, optionally, one or more elements chosen from: Cr≦1%; Mo≦0.40%; Ni≦1%; Cu≦5%; Ti≦0.50%; Nb≦0.50%; V≦0.50%, the rest of the composition consisting of iron and inevitable impurities resulting from the smelting, the recrystallized surface fraction of said steel being equal to 100%, the surface fraction of precipitated carbides of said steel being equal to 0% and the mean grain size of said steel being less than or equal to 10 microns.
The invention deals with an organic coated metallic substrate with enhanced heat transfer properties, comprising a metallic substrate, eventually coated on at least one face by a metallic layer improving the corrosion resistance of said substrate and coated one at least one face by a polyurethane-containing layer comprising graphite in an amount of more than 5% by weight of said layer, as well as with a method of production of such a coated substrate.
F28F 13/18 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflectingArrangements for modifying heat transfer, e.g. increasing, decreasing by surface treatment, e.g. polishing
H01L 23/373 - Cooling facilitated by selection of materials for the device
11.
METHOD OF PRODUCING A WELDED PART HAVING VERY HIGH MECHANICAL PROPERTIES FROM A ROLLED AND COATED SHEET
Sheet consisting of a steel substrate (1) and a precoating (2), said precoating consisting of an intermetallic alloy layer (3) in contact with said substrate and surmounted by a metal alloy layer (4), characterized in that at least on one precoated face of said sheet, a region (6) is devoid of said metal alloy layer, said region being located on the periphery of said sheet.
Exemplary embodiments of a press-forming device, press-forming method, computer program/software arrangement and storage medium can be provided. The exemplary press-forming device can include a material characteristic input configured to input material characteristics. A state variable detector can be configured to measure a state variable comprising a metal mold distortion amount. A processing condition computer arrangement can be configured to determine from a first moment to a second moment at least one particular processing condition. Further, a processing condition controller can be configured to control the at least one processing condition from processing conditions.
B21C 51/00 - Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
A press-forming device has a punch (2), a die (7) which relatively moves with respect to the punch (2), a strain amount measuring means (8) which is provided inside a member to be controlled and measures astrain amount of the aforesaid member to be controlled which occurs in accordance with press--forming, when at least one of the punch (2) and the die (7) is made the aforesaid member to be controlled, and a strain amount control means (9) which is provided in the aforesaid member to be controlled and controls the strain amount of the aforesaid member to be controlled which occurs in accordance with press--forming. The strain amount control means (9)controls a drive amount of the aforesaid member to be controlled so that the strain amount measured by the strain amount measuring means (8) is in a predetermined range during forming. Thereby, reduction in a surface strain, improvement in shape fixability or the like of a press formed product can be achieved.
The press molding equipment comprises a punch (2), a die (7) moving relatively to the punch (2), a quantity of strain measuring means (8) provided in a controlled member, i.e. at least any one of the punch (2) and the die (7), in order to measure the quantity of strain occurring in the controlled member depending on the press molding, and a quantity of strain control means (9) for controlling the quantity of strain occurring in the controlled member depending on the press molding. The quantity of strain control means (9) controls the amount of driving the controlled member such that the quantity of strain measured by the quantity of strain measuring means (8) falls within a predetermined range during molding. Consequently, surface distortion of a press molded product can be reduced or shape freeze properties can be improved.
A first step where a computer performs press forming analysis based on a shape of a formed product or a shape of a member, a blank holder force, a friction coefficient, a tensile strength of a material, a yield strength, a stress-strain relation, and a sheet thickness, as press forming conditions, to calculate sheet thickness distribution and post-formation strain distribution of the formed product; and a second step where the computer performs performance analysis based on the sheet thickness distribution, the post-formation strain distribution, and the shape of the formed product or the shape of the member, as state amounts of the formed product, to calculate performance of the member are included, in which the computer repeats the calculations performed in the process from the first step through the second step a predetermined number of times, with at least one of the press forming conditions being changed, to output an optimum press forming condition that gives a maximum value or a target value of the performance.
The invention concerns a method for making a part with very high mechanical characteristics from a hot- or cold-rolled steel strip, comprising precoating said strip with aluminum or an aluminum alloy, cold process deformation of the coated strip, optionally cutting off excess plate metal in view of the final shape of the part, heating the part so as to produce an intermetallic compound from the steel-coating interface and to austenize the steel, transferring the part into an equipment, cooling the part inside the equipment at a speed such that the steel structure after cooling is martensitic, or bainitic or martensito-bainitic. The precoating is performed by electroplating, chemical or physical vapour deposition, or combined rolling.
C23C 22/78 - Pretreatment of the material to be coated
C23F 17/00 - Multi-step processes for surface treatment of metallic material involving at least one process provided for in class and at least one process covered by subclass or or class
17.
METHOD OF PRODUCING AUSTENTIC IRON/CARBON/MANGANESE STEEL SHEETS HAVING VERY HIGH STRENGTH AND ELONGATION CHARACTERISTICS AND EXCELLENT HOMOGENEITY
The invention relates to a hot rolled sheet which is made from austenitic iron/carbon/manganese steel and which has a strength of greater than 1200 MPa, of which the product P (resistance (MPa) x elongation at rupture (%)) is greater than 65000 MPa %. The nominal chemical composition of the inventive sheet comprises the following concentrations expressed as weight: 0.85 %<= C<= 1.05 %, 16 %<= Mn<=19 %, Si <=2 %, Al <=0.050 %, S<=0.030 %, P<=0.050 %, N<=0.1 %, and, optionally, one or more elements selected from among Cr<=1 %, Mo<=0.40 %, Ni<=1 %, Cu<=5 %, Ti<=0.50 %, Nb<=0.50 %, V<= 0.50 %, the rest of the composition comprising iron and inevitable impurities resulting from production. According to the invention, the recrystallised surface fraction of the steel is equal to 100 %, the surface fraction of precipitated carbides of said steel is equal to 0 % and the average grain size thereof is less than or equal to 10 micrometers.
A condition setting calculation device (104) compares an actual value of the material characteristic received via a network (105) from a material characteristic data providing device (101) to a standard value and corrects the molding conditions such as a molding speed and a wrinkle flattening pressure according to the comparison result. A control device (300) controls a press molding device (102) so as to start press working of a material-to-be-pressed (300) with the corrected molding condition. Thus, it is possible to minimize generation of cracks and wrinkles when pressing the material-to-be-pressed (300) and obtain products of substantially identical shape.
