JPS5544590A - Production of high tensile thin steel plate of superior cold workability - Google Patents
Production of high tensile thin steel plate of superior cold workabilityInfo
- Publication number
- JPS5544590A JPS5544590A JP11902178A JP11902178A JPS5544590A JP S5544590 A JPS5544590 A JP S5544590A JP 11902178 A JP11902178 A JP 11902178A JP 11902178 A JP11902178 A JP 11902178A JP S5544590 A JPS5544590 A JP S5544590A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- specified
- thin steel
- cooling rate
- production
- 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
Abstract
PURPOSE: To obtain the captioned steel plate inexpensively with good efficiency by rolling the steel of the specified composition under specified draft while controlling and cooling the same at above the specified mean cooling rate from above the specified temperature then quenching the same thereby forming martensite phase thence coiling the steel plate.
CONSTITUTION: The steel of C; 0.05W0.25%, Mn; 0.1W2%, Si; 1% or under and the rest Fe in weight % is rolled so that the total draft becomes 20W90% while it is being controlled and cooled so that the mean cooling rate or higher of the separately mentioned formula II is reached from the temperature of the separately mentioned formula I or higher. Next, this thin steel plate is quenched immediately upon ending of the rolling to let martensite phase be formed, after which it is taken up to a coil. In the formulas, Tsc(°C); the critical value of the control cooling start temperature of the foregoing steel plate. αc; the critical value of the mean cooling rate. R; the total draft at the control cooling.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53119021A JPS5818971B2 (en) | 1978-09-26 | 1978-09-26 | Method for manufacturing high-strength thin steel sheets with excellent cold workability |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53119021A JPS5818971B2 (en) | 1978-09-26 | 1978-09-26 | Method for manufacturing high-strength thin steel sheets with excellent cold workability |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5544590A true JPS5544590A (en) | 1980-03-28 |
JPS5818971B2 JPS5818971B2 (en) | 1983-04-15 |
Family
ID=14751012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53119021A Expired JPS5818971B2 (en) | 1978-09-26 | 1978-09-26 | Method for manufacturing high-strength thin steel sheets with excellent cold workability |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5818971B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57126916A (en) * | 1981-01-29 | 1982-08-06 | Sumitomo Metal Ind Ltd | Production of high-tensile strength steel sheet excellent in workability and weldability |
JPS58210125A (en) * | 1982-06-01 | 1983-12-07 | Sumitomo Metal Ind Ltd | Production of strong and tough high tensile steel plate by direct hardening method |
JPS6039119A (en) * | 1983-08-11 | 1985-02-28 | Sumitomo Metal Ind Ltd | Manufacture of hot-rolled high-tension steel plate |
JPS61257457A (en) * | 1985-05-07 | 1986-11-14 | Kobe Steel Ltd | Steel sheet for laser processing having superior fatigue characteristic |
JPS62142726A (en) * | 1985-12-18 | 1987-06-26 | Kobe Steel Ltd | Manufacture of wear resistant steel sheet having satisfactory weldability |
CN105369021A (en) * | 2015-12-11 | 2016-03-02 | 武汉钢铁(集团)公司 | On-line quenching and cooling method taking account of shape and performance of thin-specification high-strength steel plate |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59126797A (en) * | 1982-12-31 | 1984-07-21 | Bunzo Hirano | Washing device of electrodeposition painting |
JPS60883A (en) * | 1983-06-16 | 1985-01-05 | Nitto Electric Ind Co Ltd | Operating method of membrane separator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS516811A (en) * | 1974-07-09 | 1976-01-20 | Nippon Steel Corp | Ihoseinonai koenseikokyodokoto sonoseizohoho |
JPS5112317A (en) * | 1974-07-20 | 1976-01-30 | Nippon Steel Corp | Kyodo enseino baransuno suguretakakoyokokyodosukohanno seizohoho |
JPS5178730A (en) * | 1974-12-30 | 1976-07-08 | Nippon Steel Corp | Fueraitosoto kyureihentaisoyorinaru fukugososhikikohanno seizohoho |
-
1978
- 1978-09-26 JP JP53119021A patent/JPS5818971B2/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS516811A (en) * | 1974-07-09 | 1976-01-20 | Nippon Steel Corp | Ihoseinonai koenseikokyodokoto sonoseizohoho |
JPS5112317A (en) * | 1974-07-20 | 1976-01-30 | Nippon Steel Corp | Kyodo enseino baransuno suguretakakoyokokyodosukohanno seizohoho |
JPS5178730A (en) * | 1974-12-30 | 1976-07-08 | Nippon Steel Corp | Fueraitosoto kyureihentaisoyorinaru fukugososhikikohanno seizohoho |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57126916A (en) * | 1981-01-29 | 1982-08-06 | Sumitomo Metal Ind Ltd | Production of high-tensile strength steel sheet excellent in workability and weldability |
JPH0116888B2 (en) * | 1981-01-29 | 1989-03-28 | Sumitomo Metal Ind | |
JPS58210125A (en) * | 1982-06-01 | 1983-12-07 | Sumitomo Metal Ind Ltd | Production of strong and tough high tensile steel plate by direct hardening method |
JPH0413406B2 (en) * | 1982-06-01 | 1992-03-09 | Sumitomo Metal Ind | |
JPS6039119A (en) * | 1983-08-11 | 1985-02-28 | Sumitomo Metal Ind Ltd | Manufacture of hot-rolled high-tension steel plate |
JPH0123525B2 (en) * | 1983-08-11 | 1989-05-02 | Sumitomo Metal Ind | |
JPS61257457A (en) * | 1985-05-07 | 1986-11-14 | Kobe Steel Ltd | Steel sheet for laser processing having superior fatigue characteristic |
JPH0514782B2 (en) * | 1985-05-07 | 1993-02-25 | Kobe Steel Ltd | |
JPS62142726A (en) * | 1985-12-18 | 1987-06-26 | Kobe Steel Ltd | Manufacture of wear resistant steel sheet having satisfactory weldability |
CN105369021A (en) * | 2015-12-11 | 2016-03-02 | 武汉钢铁(集团)公司 | On-line quenching and cooling method taking account of shape and performance of thin-specification high-strength steel plate |
Also Published As
Publication number | Publication date |
---|---|
JPS5818971B2 (en) | 1983-04-15 |
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