JPS5726143A - Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufacture - Google Patents
Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufactureInfo
- Publication number
- JPS5726143A JPS5726143A JP10210980A JP10210980A JPS5726143A JP S5726143 A JPS5726143 A JP S5726143A JP 10210980 A JP10210980 A JP 10210980A JP 10210980 A JP10210980 A JP 10210980A JP S5726143 A JPS5726143 A JP S5726143A
- Authority
- JP
- Japan
- Prior art keywords
- cold rolled
- rolled steel
- steel plate
- pressing
- anisotropy
- 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
Landscapes
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
PURPOSE: To provide the titled cold rolled steel plate for pressing with superior deep drawability and bulgeability by specifying the contents of C, Si, Mn, P, S, N and acid-sol. Al and adding Nb in a specified ratio to C.
CONSTITUTION: Molten steel contg., by wt., ≤0.006% C, ≤0.2% Si, 0.005W0.40 % Mn, ≤0.02% P, ≤0.02% S, ≤0.01% N, 0.1% acid-sol. Al and Nb in a range satisfying log(N%/C%)≥1% and (Nb%-8×C%)≤0.02% is prepared. A slab is made out of this molten steel by continuous casting or other method, and it is hot rolled at ≥90% reduction ratio and ≥40m/sec rolling speed. The resulting hot rolled steel strip is pickled, cold rolled at ≥50% reduction ratio, and subjected to recrystallization annealing with a box annealing furnace at ≥680°C. Thus, a cold rolled steel plate with superior press formability and very low anisotropy in the mechanical characteristics is obtd.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10210980A JPS5726143A (en) | 1980-07-25 | 1980-07-25 | Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10210980A JPS5726143A (en) | 1980-07-25 | 1980-07-25 | Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufacture |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18275184A Division JPS6164852A (en) | 1984-09-03 | 1984-09-03 | Non-aging cold rolled steel sheet for press forming having extremely low anisotropy in plane |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5726143A true JPS5726143A (en) | 1982-02-12 |
JPS61888B2 JPS61888B2 (en) | 1986-01-11 |
Family
ID=14318627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10210980A Granted JPS5726143A (en) | 1980-07-25 | 1980-07-25 | Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5726143A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59143021A (en) * | 1983-02-04 | 1984-08-16 | Nippon Steel Corp | Production of hot rolled steel sheet having excellent ductility |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5126614A (en) * | 1974-08-31 | 1976-03-05 | Nippon Steel Corp | ENSEINOICHI JIRUSHIKUSUGURETA ARUMIKIRUDOREIENKOHAN NO SEIZOHO |
JPS541245A (en) * | 1977-06-06 | 1979-01-08 | Hitachi Ltd | Method of etching a1 and a1-based alloy |
-
1980
- 1980-07-25 JP JP10210980A patent/JPS5726143A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5126614A (en) * | 1974-08-31 | 1976-03-05 | Nippon Steel Corp | ENSEINOICHI JIRUSHIKUSUGURETA ARUMIKIRUDOREIENKOHAN NO SEIZOHO |
JPS541245A (en) * | 1977-06-06 | 1979-01-08 | Hitachi Ltd | Method of etching a1 and a1-based alloy |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59143021A (en) * | 1983-02-04 | 1984-08-16 | Nippon Steel Corp | Production of hot rolled steel sheet having excellent ductility |
JPH0558044B2 (en) * | 1983-02-04 | 1993-08-25 | Nippon Steel Corp |
Also Published As
Publication number | Publication date |
---|---|
JPS61888B2 (en) | 1986-01-11 |
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