JPS5743932A - Production of high strength cold rolled steel strip excellent in press formability and bake hardenability - Google Patents
Production of high strength cold rolled steel strip excellent in press formability and bake hardenabilityInfo
- Publication number
- JPS5743932A JPS5743932A JP11858180A JP11858180A JPS5743932A JP S5743932 A JPS5743932 A JP S5743932A JP 11858180 A JP11858180 A JP 11858180A JP 11858180 A JP11858180 A JP 11858180A JP S5743932 A JPS5743932 A JP S5743932A
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- steel
- press formability
- production
- high strength
- 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.)
- Pending
Links
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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE:To obtain a steel strip having excellent bake-hardenability and tensile strength by a method wherein a steel containing C, Mn, solAl, Si and P at specified ratios is subjected to hot rolling and cold rolling, followed by recrystallization annealing in a specified conditions. CONSTITUTION:A steel containing, by weight, 0.002-0.020% of C, 0.03-0.25% of Mn, 0.005-0.200% of solAl, 0.21-1.50% of Si, 0.02-0.20% of P, with the condition of 0.8<=Si(%)+8XP(%)<=2.4 satisfied, the balance being Fe and unavoidable impurities, is prepared. After conducting hot rolling and cold rolling in ordinary conditions, the steel is annealed in a box annealing furnace at a temperature of not lower than 600 deg.C, preferably in the range of 650-740 deg.C. Then, the steel is slowly cooled by apending 3-60hr for the temperature range of 500-200 deg.C where the precipitation of C occurs actively. Accordingly, a steel strip having a tensile strength of at least about 40kg/mm.<2> and excellent in press formability and shaping properties is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11858180A JPS5743932A (en) | 1980-08-28 | 1980-08-28 | Production of high strength cold rolled steel strip excellent in press formability and bake hardenability |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11858180A JPS5743932A (en) | 1980-08-28 | 1980-08-28 | Production of high strength cold rolled steel strip excellent in press formability and bake hardenability |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5743932A true JPS5743932A (en) | 1982-03-12 |
Family
ID=14740127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11858180A Pending JPS5743932A (en) | 1980-08-28 | 1980-08-28 | Production of high strength cold rolled steel strip excellent in press formability and bake hardenability |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5743932A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61297020A (en) * | 1985-06-26 | 1986-12-27 | Mitsubishi Electric Corp | Wire electric discharge machine |
US5175408A (en) * | 1988-10-29 | 1992-12-29 | Fanuc Ltd | Electrical discharge machine |
US5470403A (en) * | 1992-06-22 | 1995-11-28 | Nippon Steel Corporation | Cold rolled steel sheet and hot dip zinc-coated cold rolled steel sheet having excellent bake hardenability, non-aging properties and formability, and process for producing same |
US5690755A (en) * | 1992-08-31 | 1997-11-25 | Nippon Steel Corporation | Cold-rolled steel sheet and hot-dip galvanized cold-rolled steel sheet having excellent bake hardenability, non-aging properties at room temperature and good formability and process for producing the same |
KR100759197B1 (en) | 2006-06-30 | 2007-09-14 | 현대하이스코 주식회사 | Baf heat treating method for ultra deep drawing cold rolled steel sheet |
-
1980
- 1980-08-28 JP JP11858180A patent/JPS5743932A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61297020A (en) * | 1985-06-26 | 1986-12-27 | Mitsubishi Electric Corp | Wire electric discharge machine |
US5175408A (en) * | 1988-10-29 | 1992-12-29 | Fanuc Ltd | Electrical discharge machine |
US5470403A (en) * | 1992-06-22 | 1995-11-28 | Nippon Steel Corporation | Cold rolled steel sheet and hot dip zinc-coated cold rolled steel sheet having excellent bake hardenability, non-aging properties and formability, and process for producing same |
US5690755A (en) * | 1992-08-31 | 1997-11-25 | Nippon Steel Corporation | Cold-rolled steel sheet and hot-dip galvanized cold-rolled steel sheet having excellent bake hardenability, non-aging properties at room temperature and good formability and process for producing the same |
KR100759197B1 (en) | 2006-06-30 | 2007-09-14 | 현대하이스코 주식회사 | Baf heat treating method for ultra deep drawing cold rolled steel sheet |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0152665B1 (en) | A cold rolled dual-phase structure steel sheet having an excellent deep drawability and a method of manufacturing the same | |
CA2011746A1 (en) | Steel sheets for porcelain enameling and method of producing the same | |
KR930017636A (en) | Manufacturing method of steel plate for high strength can | |
KR950704531A (en) | Cold rolled steel sheet with excellent workability and manufacturing method (COLD-ROLLED STEEL SHEET HAVING EXCELLENT WORKABILITY AND PROCESS PRODUCING THE SAME) | |
JPS644429A (en) | Manufacture of high-strength cold-rolled steel sheet with high (r) value | |
JPS5743932A (en) | Production of high strength cold rolled steel strip excellent in press formability and bake hardenability | |
JPS5684422A (en) | Production of precipitation hardening type high-tension cold rolled steel plate | |
JPS55100934A (en) | Production of high tensile cold rolled steel plate excellent in drawing and shaping property | |
JPS6468422A (en) | Production of high tensile steel plate for building | |
JPS55110734A (en) | Producing method of al killed cold rolled high tensile steel plate | |
JPS5573824A (en) | Production of rigid cold-rolled steel plate for drawing | |
JPS56142826A (en) | Production of high-toughness high tensile steel plate | |
JPS6455335A (en) | Production of high-tensile steel having low yield ratio | |
JPS57185928A (en) | Manufacture of high tensile band material for packing | |
JPS5644723A (en) | Manufacture of high tensile strength steel sheet having excellent workability | |
JPS5732330A (en) | Production of high strength cold rolled steel plate of superior quench hardenability and formability | |
JPS57155329A (en) | Production of high-strength cold-rolled steel sheet excellent in strain age-hardenability | |
JPS56166330A (en) | Manufacture of cold rolled steel plate for deep drawing by continuous annealing | |
JPS57192225A (en) | Production of drawable cold-rolled steel sheet having baking-hardenability | |
JPS56127761A (en) | Preparation of high strength zinc hot dipping steel plate with low yield ratio | |
JPS5798630A (en) | Manufacture of high-tension cold-rolled steel plate with high lankford value and baking hardness | |
JPS5757835A (en) | Production of steel plate for can making | |
JPS6425947A (en) | Steel plate for enamel and its production | |
JPS5647555A (en) | Manufacture of high-tensile galvanized steel plate with low yield ratio | |
JPS56133425A (en) | Manufacture of cold rolled steel plate with superior enameling hardenability and workability |