JPS5633427A - Manufacture of hot rolled high tensile steel sheet - Google Patents
Manufacture of hot rolled high tensile steel sheetInfo
- Publication number
- JPS5633427A JPS5633427A JP10991679A JP10991679A JPS5633427A JP S5633427 A JPS5633427 A JP S5633427A JP 10991679 A JP10991679 A JP 10991679A JP 10991679 A JP10991679 A JP 10991679A JP S5633427 A JPS5633427 A JP S5633427A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- hot rolled
- sheet
- high tensile
- rolled high
- 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
Abstract
PURPOSE: To manufacture hot rolled high tensile steel sheet of composite structure having ferrite and martensite structures, by rolling a steel material contg. a small quantity of alloy elements into sheet, then by controlling the cooling of the sheet under specific conditions.
CONSTITUTION: A steel material contg. as fundamental components <0.20% C, <2% Si, 0.60W3.0% Mn, <0.100% soluble Al, and if necessary one or more elements among the group <0.5% Mo, <0.5% Cr, <0.5% Ni, <0.5% Cu, in addition if necessary <0.01% Ca, <0.10% Zr, <0.10% rare earth elements is hot rolled into sheet at ≥Ar3 transformation temp. in 880W720°C range. Then the steel sheet is slowly cooled to 700W800°C, quickly cooled from said temp. at a cooling rate 30W200°C/sec, then the steel sheet is wound at ≤200°C. Hereby hot rolled high tensile steel sheet of composite structure having ferrite and martensite structures is manufactured.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10991679A JPS5633427A (en) | 1979-08-28 | 1979-08-28 | Manufacture of hot rolled high tensile steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10991679A JPS5633427A (en) | 1979-08-28 | 1979-08-28 | Manufacture of hot rolled high tensile steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5633427A true JPS5633427A (en) | 1981-04-03 |
Family
ID=14522383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10991679A Pending JPS5633427A (en) | 1979-08-28 | 1979-08-28 | Manufacture of hot rolled high tensile steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5633427A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57194209A (en) * | 1981-05-25 | 1982-11-29 | Nippon Kokan Kk <Nkk> | Production of hot rolled high tensile steel plate or high forming property |
| JPS62103320A (en) * | 1985-10-30 | 1987-05-13 | Nippon Kokan Kk <Nkk> | Manufacture of high tension steel plate having superior uniformity in direction of thickness |
-
1979
- 1979-08-28 JP JP10991679A patent/JPS5633427A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57194209A (en) * | 1981-05-25 | 1982-11-29 | Nippon Kokan Kk <Nkk> | Production of hot rolled high tensile steel plate or high forming property |
| JPS6339647B2 (en) * | 1981-05-25 | 1988-08-05 | Nippon Kokan Kk | |
| JPS62103320A (en) * | 1985-10-30 | 1987-05-13 | Nippon Kokan Kk <Nkk> | Manufacture of high tension steel plate having superior uniformity in direction of thickness |
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