JPS5623230A - Production of high strength cold-rolled steel plate of good workability - Google Patents
Production of high strength cold-rolled steel plate of good workabilityInfo
- Publication number
- JPS5623230A JPS5623230A JP9850879A JP9850879A JPS5623230A JP S5623230 A JPS5623230 A JP S5623230A JP 9850879 A JP9850879 A JP 9850879A JP 9850879 A JP9850879 A JP 9850879A JP S5623230 A JPS5623230 A JP S5623230A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- rolled steel
- high strength
- cold
- strength cold
- 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
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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
PURPOSE:To produce a high strength cold-rolled steel plate of superior workability for automobiles by subjecting the cold-rolled steel plate of low carbon steel having been controlled of content of Mn alone or Mn+Cr to a specific range and contg. a slight amount of B to continuous annealing of the specific conditions. CONSTITUTION:0.005-0.30% C, <0.15% Si and 1.2-2.5% Mn alone are contained or >0.1% Mn, >0.1% Cr and Mn+Cr are contained in such a manner that the latter becomes 1.2-2.5%. The steel slab contg. 0.005-0.080% sol. Al, 0.0005-0.0100% B as other components is hot and cold rolled to a plate of 0.8mm. thick. After this is heated at 750-800 deg.C maximum heating temp. and 5sec-2min holding time, it is continuously annealed at 1-30 deg.C/sec in mean cooling rate between 700-400 deg.C of the cooling process. The high strength cold-rolled steel plate of superior workability and formability for automotive body panels may be produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9850879A JPS5929089B2 (en) | 1979-07-31 | 1979-07-31 | Method for manufacturing high-strength cold-rolled steel sheet with good workability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9850879A JPS5929089B2 (en) | 1979-07-31 | 1979-07-31 | Method for manufacturing high-strength cold-rolled steel sheet with good workability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5623230A true JPS5623230A (en) | 1981-03-05 |
| JPS5929089B2 JPS5929089B2 (en) | 1984-07-18 |
Family
ID=14221580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9850879A Expired JPS5929089B2 (en) | 1979-07-31 | 1979-07-31 | Method for manufacturing high-strength cold-rolled steel sheet with good workability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5929089B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009008548A1 (en) * | 2007-07-11 | 2009-01-15 | Jfe Steel Corporation | Process for producing high-strength cold rolled steel sheet with low yield strength and with less material quality fluctuation |
-
1979
- 1979-07-31 JP JP9850879A patent/JPS5929089B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009008548A1 (en) * | 2007-07-11 | 2009-01-15 | Jfe Steel Corporation | Process for producing high-strength cold rolled steel sheet with low yield strength and with less material quality fluctuation |
| JP2009035816A (en) * | 2007-07-11 | 2009-02-19 | Jfe Steel Kk | Process for producing high-strength cold rolled steel sheet with low yield strength and with less material quality fluctuation |
| KR101164471B1 (en) | 2007-07-11 | 2012-07-18 | 제이에프이 스틸 가부시키가이샤 | Process for producing high-strength cold rolled steel sheet with low yield strength and with less material quality fluctuation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5929089B2 (en) | 1984-07-18 |
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