JPS56166320A - Manufacture of nonrefined high tensile steel - Google Patents
Manufacture of nonrefined high tensile steelInfo
- Publication number
- JPS56166320A JPS56166320A JP7063080A JP7063080A JPS56166320A JP S56166320 A JPS56166320 A JP S56166320A JP 7063080 A JP7063080 A JP 7063080A JP 7063080 A JP7063080 A JP 7063080A JP S56166320 A JPS56166320 A JP S56166320A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- nonrefined
- rolling
- sol
- contg
- 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
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To manufacture a nonrefined high tensile steel with high strength and high weldability by treating steel contg. a prescribed percentage each of C, Si, Mn and sol. Al as basic components while suitably combining the conditions of heating and rolling with those of accelerated cooling after the rolling.
CONSTITUTION: Steel is prepared contg. ≤0.13% C, ≤0.10% Si, 0.50W2.20% Mn and 0.010W0.10% sol. Al (Si+sol. Al≤0.13%) as basic components or further contg. a prescribed percentage each of ≥1 kinds among Ti, Nb, Cu, Ni, Cr, Mo and V. The steel is heated to the Ac3 point or above and subjected to controlled rolling making the grains fine, especially hot rolling at ≥45% total reduction ratio in the temp. zone of 850°CW the Ar3 point under the recrystallization temp. The rolled steel with formed unrecrystallized austenite grains is acceleratedly cooled at 1W60°C/sec cooling rate. Simultaneously with the accelerated cooling, dehydrogenation is effected so as to control hydrogen Hc in the steel at the central part in the plate thickness direction to Hc(ppm)≤1.10-0.005σy. Thus, the desired nonrefined high tensile steel is manufactured.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7063080A JPS56166320A (en) | 1980-05-27 | 1980-05-27 | Manufacture of nonrefined high tensile steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7063080A JPS56166320A (en) | 1980-05-27 | 1980-05-27 | Manufacture of nonrefined high tensile steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56166320A true JPS56166320A (en) | 1981-12-21 |
Family
ID=13437139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7063080A Pending JPS56166320A (en) | 1980-05-27 | 1980-05-27 | Manufacture of nonrefined high tensile steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56166320A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2397570A4 (en) * | 2009-10-28 | 2012-08-22 | Nippon Steel Corp | STEEL PLATE FOR LINE TUBES WITH EXCELLENT STRENGTH AND DUCTILITY AND MANUFACTURING METHOD THEREFOR |
-
1980
- 1980-05-27 JP JP7063080A patent/JPS56166320A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2397570A4 (en) * | 2009-10-28 | 2012-08-22 | Nippon Steel Corp | STEEL PLATE FOR LINE TUBES WITH EXCELLENT STRENGTH AND DUCTILITY AND MANUFACTURING METHOD THEREFOR |
| US8641836B2 (en) | 2009-10-28 | 2014-02-04 | Nippon Steel & Sumitomo Metal Corporation | Steel plate for line pipe excellent in strength and ductility and method of production of same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SE8307123D0 (en) | METHOD OF MANUFACTURING HIGH TENSILE STRENGTH STEEL PLATES | |
| JPS57137452A (en) | Hot rolled high tensile steel plate having composite structure and its manufacture | |
| JPS55100924A (en) | Production of high toughness bainite high tension steel plate having excellent weldability | |
| JPS5625926A (en) | Manufacture of high tensile steel | |
| JPS6479322A (en) | Production of composite structure high-strength cold rolled steel sheet having excellent bulging property and fatigue characteristic | |
| JPS64226A (en) | Production of high tensile non-oriented electrical steel sheet | |
| JPS56102562A (en) | Manufacture of al alloy plate for packing | |
| JPS57207114A (en) | Manufacture of anisotropic electric steel plate | |
| JPS5565324A (en) | Manufacture of low alloy steel excellent in cold workability | |
| JPS56166320A (en) | Manufacture of nonrefined high tensile steel | |
| JPS6468422A (en) | Production of high tensile steel plate for building | |
| JPS56133423A (en) | Manufacture of composite structure type high-tensile high-ductility steel plate | |
| JPS5442326A (en) | Production of high-ductile, high-tensile normalized steel plate having decreased rolling anisotropy | |
| JPS56119723A (en) | Manufacture of nonrefined high tensile steel with superior low temperature toughness | |
| JPS5454915A (en) | Production of high-tensile steel plate having good cold toughness and weldability | |
| JPS57104623A (en) | Manufacture of high strength and high toughness steel pipe of large diameter | |
| JPS569326A (en) | Manufacture of case hardening steel | |
| JPS56166321A (en) | Manufacture of nonrefined high tensile steel | |
| JPS5735623A (en) | Manufacture of high strength alloy steel for high temperature use | |
| JPS5644723A (en) | Manufacture of high tensile strength steel sheet having excellent workability | |
| JPS6425921A (en) | Manufacture of cold-rolled steel sheet combining high ductility with high strength | |
| JPS5741323A (en) | Manufacture of refined thick steel products with superior characteristic stopping brittle rupture propagation | |
| JPS57104628A (en) | Production of high-strength stainless steel plate | |
| JPS57104650A (en) | High-strength hot-rolled steel plate and its manufacture | |
| JPS55141555A (en) | Production of high tension galvanized steel sheet for press machining |