EP1558769A1 - Verfahren zur herstellung von wärmehärtbaren stahlblechen durch glühung, stahlbleche und davon hergestellte teile - Google Patents
Verfahren zur herstellung von wärmehärtbaren stahlblechen durch glühung, stahlbleche und davon hergestellte teileInfo
- Publication number
- EP1558769A1 EP1558769A1 EP03775481A EP03775481A EP1558769A1 EP 1558769 A1 EP1558769 A1 EP 1558769A1 EP 03775481 A EP03775481 A EP 03775481A EP 03775481 A EP03775481 A EP 03775481A EP 1558769 A1 EP1558769 A1 EP 1558769A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- weight
- temperature
- less
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 55
- 239000010959 steel Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010304 firing Methods 0.000 title claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000000137 annealing Methods 0.000 claims abstract description 10
- 238000005266 casting Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000005482 strain hardening Methods 0.000 claims abstract description 5
- 238000004804 winding Methods 0.000 claims abstract description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052796 boron Inorganic materials 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 238000005097 cold rolling Methods 0.000 claims abstract description 3
- 238000005098 hot rolling Methods 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 16
- 239000011572 manganese Substances 0.000 claims description 14
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 230000002045 lasting effect Effects 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims 1
- 238000010422 painting Methods 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 description 12
- 230000032683 aging Effects 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000006104 solid solution Substances 0.000 description 4
- 238000007373 indentation Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical class [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000007725 thermal activation Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
Definitions
- the present invention relates to a process for manufacturing baking hardening steel sheets, known as "bake hardening”, as well as the steel sheets and pieces obtained by the implementation of this process.
- These sheets and these steel parts may include an anti-corrosion coating, such as that obtained by hot-dip galvanizing or by electrogalvanizing.
- the steel sheets are more particularly intended for the manufacture of appearance parts for the automobile, such as hoods for example, while the parts of greater thickness than the sheets, are more particularly intended for the production of parts of structure for automobile, too.
- the appearance parts for the automobile must be made of a material easy to implement by stamping, having at the end of this implementation good resistance to indentation, and as light as possible so to reduce the consumption of the vehicle.
- a material has good drawability when its elastic limit is low, but good resistance to indentation requires that its elastic limit is high and its thickness important.
- BH steels So-called "bake hardening" steels (also called BH steels) have therefore been developed which have the particularity of having a low yield strength before shaping, which makes them easily stampable. But, once stamped, then coated with paint and subjected to a thermal baking treatment (170 ° C for 20 minutes, for example), it is found that the parts or sheets of BH steels have an elastic limit which has increased considerably, which gives them good resistance to indentation. In the case of structural parts, this hardening property during curing of the coating is in particular used to reduce the thickness, and therefore the weight, of these parts.
- Baking hardenable steels are known, the composition of which comprises manganese and silicon and a significant quantity of phosphorus, around 0.1% by weight. These steels have good mechanical characteristics and a gain in yield strength after firing (BH) of the order of 45 MPa, but have significant natural aging.
- BH yield strength after firing
- the present invention therefore aims to provide steels hardenable by baking having good mechanical characteristics, a gain in yield strength after baking (BH) of at least 40 MPa and which are less sensitive to natural aging than steels of the prior art.
- BH gain in yield strength after baking
- a first object of the present invention consists of a process for the manufacture of steel sheets which can be hardened by firing comprising: - the production of a steel the composition of which comprises, expressed in% by weight:
- the continuous annealing heat treatment comprises:
- the first cooling comprises a first slow part carried out at a speed of less than 10 ° C / s, then a second rapid part carried out at a speed of between 20 and 50 ° C / s.
- the process can also include the following variants, taken individually or in combination:
- the manganese content of the steel is between 0.55 and 0.65% by weight and the silicon content of the steel is between 0.08 and 0.12% by weight
- the manganese content of the steel is between 0.95 and 1.05% by weight and the silicon content of the steel is between 0.16 and 0.20% by weight
- the nitrogen content of the steel is less than 0.005% by weight
- - the phosphorus content of the steel is less than 0.015% by weight.
- the carbon content of the composition according to the invention is between 0.03 and 0.06% by weight, since this element significantly lowers the ductility, it is however necessary to have a minimum of 0.03% by weight to avoid any problem of aging.
- the manganese content of the composition according to the invention must be between 0.50 and 1.10% by weight. Manganese improves the yield strength of steel while greatly reducing its ductility. Below 0.50% by weight, aging problems are observed, while beyond 1.10% by weight, it damages the ductility too much.
- the silicon content of the composition according to the invention must be between 0.08 and 0.20% by weight. It greatly improves the yield strength of steel while slightly reducing its ductility, but increases significantly its tendency to aging.
- the steel does not have good mechanical characteristics, while if it exceeds 0.20% by weight, there are problems with the appearance of surfaces on which appear tigrages.
- the ratio of the manganese content relative to the silicon content is between 4 and 15 in order to avoid any problem of sparking weld brittleness. Indeed, if one places oneself outside these values, one observes the formation of embrittling oxides during this welding operation.
- the main function of boron is to fix nitrogen by early precipitation of boron nitrides.
- the aluminum content of the composition according to the invention is between 0.015 and 0.070% by weight, without being of critical importance.
- Aluminum is present in the grade according to the invention due to the casting process during which this element is added to deoxidize the steel. It is important, however, not to exceed 0.070% by weight, since there would then be problems of inclusion of aluminum oxides, harmful for the mechanical characteristics of the steel.
- Phosphorus is limited in the steel according to the invention to a content of less than 0.035% by weight, preferably less than 0.015% by weight. It increases the elastic limit of the shade, but it also increases its tendency to age in heat treatments, which explains its limitation. It is also harmful for ductility.
- the titanium content of the composition must be less than 0.005% by weight, that of sulfur must be less than 0.015% by weight, that of nickel must be less than 0.040% by weight, that of copper must be less than 0.040% by weight. weight and that in molybdenum must be less than 0.010% by weight.
- These different elements actually constitute the residual elements resulting from the development of the shade that we meet most often. Their contents are limited because they are capable of forming inclusions which reduce the mechanical characteristics of the grade.
- these residual elements may also be niobium, which is not added to the composition, but which can be present in trace amounts, that is to say at a content of less than 0.004%, preferably less than 0.001%, and particularly preferably equal to 0.
- a second object of the invention consists of a baking-hardenable sheet which can be obtained by the process according to the invention and which has an elastic limit between 260 and 360 MPa, a tensile strength between 320 and 460 MPa, a BH2 value greater than 40 MPa, and preferably greater than 60 MPa and an elastic limit plateau less than or equal to 0.2%.
- test piece is therefore subjected to a uniaxial traction of 2%, then a heat treatment of 170 ° C. for 20 minutes.
- Slabs are made from castings 1 to 4, then they are hot rolled at a temperature higher than Ar3. For these castings, the end of rolling temperature is between 854 and 880 ° C. The sheets thus obtained are wound, at a winding temperature between 580 and 620 ° C. for these castings, then they are cold rolled with a reduction rate which varies from 70 to 76%.
- the sheets are then subjected to a continuous annealing which has the following stages: - heating of the sheet until reaching a temperature of
- test pieces are cut from these sheets, and their ReO elastic limits are measured. Then, these test pieces are subjected to a uniaxial tension of 2% and their elastic limits Re2% are measured as well as their other mechanical characteristics. Then, they are subjected to a conventional heat treatment at 170 ° C. for 20 minutes and their new elastic limits ReTT are measured. We then calculate their BH2.
- New test pieces are then cut from the sheets which have undergone continuous annealing, and they are subjected to a heat treatment at 75 ° C. for 10 hours. This heat treatment is equivalent to a natural aging of 6 months at room temperature. The following results are obtained:
- Slabs are made from castings 1 to 5, then they are hot rolled, the end of rolling temperature being 850/880 ° C.
- the sheets thus obtained are wound at a winding temperature of 580/620 ° C, then they are cold rolled with a reduction rate varying from 70/76% for these castings.
- the sheets are then subjected to a continuous annealing which has the following stages: - heating of the sheet until reaching a temperature of
- test pieces are cut from these sheets, and their ReO elastic limits are measured. Then, these test pieces are subjected to a uniaxial tension of 2% and their elastic limits Re2% are measured as well as their other mechanical characteristics. Then, they are subjected to a conventional heat treatment at 170 ° C. for 20 minutes and their new elastic limits ReTT are measured. We then calculate their BH2.
- New test pieces are then cut from the sheets which have undergone continuous annealing, and they are subjected to a heat treatment at 75 ° C. for 10 hours. This heat treatment is equivalent to a natural aging of 6 months at room temperature. The following results are obtained:
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Laminated Bodies (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Steel (AREA)
- Meat, Egg Or Seafood Products (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0212753A FR2845694B1 (fr) | 2002-10-14 | 2002-10-14 | Procede de fabrication de toles d'acier durcissables par cuisson, toles d'acier et pieces ainsi obtenues |
| FR0212753 | 2002-10-14 | ||
| PCT/FR2003/002985 WO2004035838A1 (fr) | 2002-10-14 | 2003-10-10 | Procede de fabrication de toles d'acier durcissables par cuisson, toles d'acier et pieces ainsi obtenues |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1558769A1 true EP1558769A1 (de) | 2005-08-03 |
| EP1558769B1 EP1558769B1 (de) | 2010-06-09 |
Family
ID=32039711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03775481A Expired - Lifetime EP1558769B1 (de) | 2002-10-14 | 2003-10-10 | Verfahren zur herstellung von wärmehärtbaren stahlblechen durch glühung, stahlbleche und davon hergestellte teile |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US7540928B2 (de) |
| EP (1) | EP1558769B1 (de) |
| JP (2) | JP4892190B2 (de) |
| KR (1) | KR101044741B1 (de) |
| CN (1) | CN100366760C (de) |
| AT (1) | ATE470729T1 (de) |
| AU (1) | AU2003283507A1 (de) |
| BR (1) | BR0315255B1 (de) |
| CA (1) | CA2502079C (de) |
| DE (1) | DE60332951D1 (de) |
| ES (1) | ES2345045T3 (de) |
| FR (1) | FR2845694B1 (de) |
| MX (1) | MXPA05003938A (de) |
| PL (1) | PL200655B1 (de) |
| RU (1) | RU2338792C2 (de) |
| UA (1) | UA80448C2 (de) |
| WO (1) | WO2004035838A1 (de) |
| ZA (1) | ZA200502882B (de) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2845694B1 (fr) * | 2002-10-14 | 2005-12-30 | Usinor | Procede de fabrication de toles d'acier durcissables par cuisson, toles d'acier et pieces ainsi obtenues |
| JP5376927B2 (ja) * | 2008-12-11 | 2013-12-25 | 日新製鋼株式会社 | 曲げ加工性に優れた高比例限鋼板の製造方法 |
| WO2012127125A1 (fr) * | 2011-03-24 | 2012-09-27 | Arcelormittal Investigatión Y Desarrollo Sl | Tôle d'acier laminée à chaud et procédé de fabrication associé |
| RU2466193C1 (ru) * | 2011-05-18 | 2012-11-10 | Общество с ограниченной ответственностью "Северсталь-Проект" (ООО "Северсталь-Проект") | Способ производства толстолистового низколегированного проката |
| WO2012168564A1 (fr) * | 2011-06-07 | 2012-12-13 | Arcelormittal Investigación Y Desarrollo Sl | Tôle d'acier laminée à froid et revêtue de zinc ou d'alliage de zinc, procédé de fabrication et utilisation d'une telle tôle |
| UA109963C2 (uk) * | 2011-09-06 | 2015-10-26 | Катана сталь, яка затвердіває внаслідок виділення часток після гарячого формування і/або загартовування в інструменті, яка має високу міцність і пластичність, та спосіб її виробництва | |
| TWI467028B (zh) * | 2011-09-30 | 2015-01-01 | 新日鐵住金股份有限公司 | High-strength hot-dip galvanized steel sheet with excellent impact resistance and its manufacturing method and high-strength alloyed hot-dip galvanized steel sheet and manufacturing method thereof |
| RU2495142C1 (ru) * | 2012-06-26 | 2013-10-10 | Общество с ограниченной ответственностью "Северсталь-Проект" (ООО "Северсталь-Проект") | Способ производства толстолистового проката из низколегированной стали |
| RU2516212C1 (ru) * | 2012-10-18 | 2014-05-20 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Способ производства горячекатаного широкополосного рулонного проката |
| RU2530078C1 (ru) * | 2013-07-23 | 2014-10-10 | Открытое акционерное общество "Северсталь" (ОАО "Северсталь") | Способ производства толстолистового проката для судостроения |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6047886B2 (ja) * | 1981-03-02 | 1985-10-24 | 新日本製鐵株式会社 | 連続焼鈍による加工用高強度薄鋼板の製造法 |
| JPS5852429A (ja) * | 1981-09-19 | 1983-03-28 | Nippon Steel Corp | 加工用冷延鋼板の連続焼鈍方法 |
| US4853032A (en) * | 1987-08-17 | 1989-08-01 | Cargill, Incorporated | Process for producing low carbon steel for cold drawing |
| JPH0885827A (ja) * | 1994-09-19 | 1996-04-02 | Sumitomo Metal Ind Ltd | 連続焼鈍による冷延鋼板の製造方法 |
| JP3292671B2 (ja) * | 1997-02-10 | 2002-06-17 | 川崎製鉄株式会社 | 深絞り性と耐時効性の良好な冷延鋼板用の熱延鋼帯 |
| DE19622164C1 (de) * | 1996-06-01 | 1997-05-07 | Thyssen Stahl Ag | Verfahren zur Erzeugung eines kaltgewalzten Stahlbleches oder -bandes mit guter Umformbarkeit |
| FR2757877B1 (fr) * | 1996-12-31 | 1999-02-05 | Ascometal Sa | Acier et procede pour la fabrication d'une piece en acier mise en forme par deformation plastique a froid |
| DE19701443A1 (de) * | 1997-01-17 | 1998-07-23 | Thyssen Stahl Ag | Stahl |
| BE1011066A3 (fr) * | 1997-03-27 | 1999-04-06 | Cockerill Rech & Dev | Acier au niobium et procede de fabrication de produits plats a partir de celui-ci. |
| US6171413B1 (en) * | 1997-07-28 | 2001-01-09 | Nkk Corporation | Soft cold-rolled steel sheet and method for making the same |
| JPH11310826A (ja) * | 1998-04-30 | 1999-11-09 | Nippon Steel Corp | 耐常温時効性と加工性に優れた冷延鋼板の製造方法 |
| JP3596398B2 (ja) * | 2000-01-18 | 2004-12-02 | Ｊｆｅスチール株式会社 | 焼付硬化性と耐常温時効性に優れた冷延鋼板の製造方法 |
| JP3855678B2 (ja) * | 2000-04-28 | 2006-12-13 | 住友金属工業株式会社 | 耐常温時効性、加工性、塗装焼付硬化性に優れた薄鋼板の製造方法 |
| JP3818024B2 (ja) * | 2000-06-15 | 2006-09-06 | Ｊｆｅスチール株式会社 | 耐時効性に優れた軟質冷延鋼板の製造方法 |
| FR2820150B1 (fr) * | 2001-01-26 | 2003-03-28 | Usinor | Acier isotrope a haute resistance, procede de fabrication de toles et toles obtenues |
| FR2845694B1 (fr) * | 2002-10-14 | 2005-12-30 | Usinor | Procede de fabrication de toles d'acier durcissables par cuisson, toles d'acier et pieces ainsi obtenues |
-
2002
- 2002-10-14 FR FR0212753A patent/FR2845694B1/fr not_active Expired - Lifetime
-
2003
- 2003-10-10 US US10/531,264 patent/US7540928B2/en not_active Expired - Lifetime
- 2003-10-10 PL PL374746A patent/PL200655B1/pl unknown
- 2003-10-10 AT AT03775481T patent/ATE470729T1/de active
- 2003-10-10 CN CNB2003801014069A patent/CN100366760C/zh not_active Expired - Lifetime
- 2003-10-10 BR BRPI0315255-3A patent/BR0315255B1/pt active IP Right Grant
- 2003-10-10 JP JP2004544367A patent/JP4892190B2/ja not_active Expired - Lifetime
- 2003-10-10 UA UAA200504482A patent/UA80448C2/uk unknown
- 2003-10-10 KR KR1020057006315A patent/KR101044741B1/ko not_active Expired - Lifetime
- 2003-10-10 RU RU2005114614/02A patent/RU2338792C2/ru active
- 2003-10-10 CA CA2502079A patent/CA2502079C/fr not_active Expired - Lifetime
- 2003-10-10 ES ES03775481T patent/ES2345045T3/es not_active Expired - Lifetime
- 2003-10-10 EP EP03775481A patent/EP1558769B1/de not_active Expired - Lifetime
- 2003-10-10 WO PCT/FR2003/002985 patent/WO2004035838A1/fr not_active Ceased
- 2003-10-10 MX MXPA05003938A patent/MXPA05003938A/es active IP Right Grant
- 2003-10-10 DE DE60332951T patent/DE60332951D1/de not_active Expired - Lifetime
- 2003-10-10 AU AU2003283507A patent/AU2003283507A1/en not_active Abandoned
-
2005
- 2005-04-08 ZA ZA2005/02882A patent/ZA200502882B/en unknown
-
2010
- 2010-07-15 JP JP2010160393A patent/JP2011006792A/ja active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004035838A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101044741B1 (ko) | 2011-06-28 |
| US7540928B2 (en) | 2009-06-02 |
| EP1558769B1 (de) | 2010-06-09 |
| BR0315255B1 (pt) | 2011-03-09 |
| RU2005114614A (ru) | 2005-10-10 |
| UA80448C2 (en) | 2007-09-25 |
| BR0315255A (pt) | 2005-08-23 |
| CA2502079A1 (fr) | 2004-04-29 |
| ES2345045T3 (es) | 2010-09-14 |
| US20060157166A1 (en) | 2006-07-20 |
| CN100366760C (zh) | 2008-02-06 |
| FR2845694A1 (fr) | 2004-04-16 |
| JP2011006792A (ja) | 2011-01-13 |
| PL374746A1 (en) | 2005-10-31 |
| JP2006503183A (ja) | 2006-01-26 |
| PL200655B1 (pl) | 2009-01-30 |
| AU2003283507A1 (en) | 2004-05-04 |
| CA2502079C (fr) | 2011-08-09 |
| FR2845694B1 (fr) | 2005-12-30 |
| DE60332951D1 (de) | 2010-07-22 |
| JP4892190B2 (ja) | 2012-03-07 |
| MXPA05003938A (es) | 2005-06-17 |
| ATE470729T1 (de) | 2010-06-15 |
| KR20050055006A (ko) | 2005-06-10 |
| ZA200502882B (en) | 2005-12-28 |
| CN1705757A (zh) | 2005-12-07 |
| WO2004035838A1 (fr) | 2004-04-29 |
| RU2338792C2 (ru) | 2008-11-20 |
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