JPS5681620A - Production of tin base low yield ratio composite structure high tensile steel plate - Google Patents
Production of tin base low yield ratio composite structure high tensile steel plateInfo
- Publication number
- JPS5681620A JPS5681620A JP15758379A JP15758379A JPS5681620A JP S5681620 A JPS5681620 A JP S5681620A JP 15758379 A JP15758379 A JP 15758379A JP 15758379 A JP15758379 A JP 15758379A JP S5681620 A JPS5681620 A JP S5681620A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- high tensile
- yield ratio
- low yield
- composite structure
- 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 Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To produce a steel plate of ferrite-martensite composite with superior strength-ductility balance by hot rolling, cooling and coiling a low carbon steel having slight amounts of Ti and N under specific conditions.
CONSTITUTION: This is a steel contg. 0.05W1.15% C, ≤2% Si, 0.5W2.0% Mn, ≤0.1% Al, 0.005W0.03% Ti, and N≥ Ti/3.4 or further≤0.015% S and 2≤Zr/ s≤10 or any of Zr, REM, CA that make rare earth elements (REM) 1.3≤REM/S≤ 5, or 0.5≤Ca/S≤1.5. This ingot is hot-rolled ro a steel plate at temperatures above the Ar3 transformation point and ≥90% total draft. After this steel plate is quickly cooled at cooling rates of 10W100°C/sec, it is wound to a coil at ≤300°C temperatures. The TiN-base low yield ratio high tensile steel plate of ferrite-martensite composite structure of fine structure is produced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15758379A JPS582571B2 (en) | 1979-12-05 | 1979-12-05 | Manufacturing method of Tin-based low yield ratio composite structure high tensile strength steel plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15758379A JPS582571B2 (en) | 1979-12-05 | 1979-12-05 | Manufacturing method of Tin-based low yield ratio composite structure high tensile strength steel plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5681620A true JPS5681620A (en) | 1981-07-03 |
JPS582571B2 JPS582571B2 (en) | 1983-01-17 |
Family
ID=15652863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15758379A Expired JPS582571B2 (en) | 1979-12-05 | 1979-12-05 | Manufacturing method of Tin-based low yield ratio composite structure high tensile strength steel plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS582571B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58123823A (en) * | 1981-12-11 | 1983-07-23 | Nippon Steel Corp | Manufacture of high strength hot rolled steel sheet of super fine grain |
JPS58174523A (en) * | 1982-04-03 | 1983-10-13 | Nippon Steel Corp | Manufacture of very fine-grained high-strength hot-worked steel material |
JPS61264159A (en) * | 1985-05-13 | 1986-11-22 | Kobe Steel Ltd | High-strength hot-rolled steel sheet of 55kgf/mm2 level for direct current butt welding |
JPS61264160A (en) * | 1985-05-13 | 1986-11-22 | Kobe Steel Ltd | High-strength hot-rolled steel sheet of 60kgf/mm2 level for direct current butt welding |
US5634988A (en) * | 1993-03-25 | 1997-06-03 | Nippon Steel Corporation | High tensile steel having excellent fatigue strength at its weld and weldability and process for producing the same |
-
1979
- 1979-12-05 JP JP15758379A patent/JPS582571B2/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58123823A (en) * | 1981-12-11 | 1983-07-23 | Nippon Steel Corp | Manufacture of high strength hot rolled steel sheet of super fine grain |
JPS58174523A (en) * | 1982-04-03 | 1983-10-13 | Nippon Steel Corp | Manufacture of very fine-grained high-strength hot-worked steel material |
JPS627247B2 (en) * | 1982-04-03 | 1987-02-16 | Nippon Steel Corp | |
JPS61264159A (en) * | 1985-05-13 | 1986-11-22 | Kobe Steel Ltd | High-strength hot-rolled steel sheet of 55kgf/mm2 level for direct current butt welding |
JPS61264160A (en) * | 1985-05-13 | 1986-11-22 | Kobe Steel Ltd | High-strength hot-rolled steel sheet of 60kgf/mm2 level for direct current butt welding |
JPH0581658B2 (en) * | 1985-05-13 | 1993-11-15 | Kobe Steel Ltd | |
US5634988A (en) * | 1993-03-25 | 1997-06-03 | Nippon Steel Corporation | High tensile steel having excellent fatigue strength at its weld and weldability and process for producing the same |
Also Published As
Publication number | Publication date |
---|---|
JPS582571B2 (en) | 1983-01-17 |
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