JPS56119723A - Manufacture of nonrefined high tensile steel with superior low temperature toughness - Google Patents
Manufacture of nonrefined high tensile steel with superior low temperature toughnessInfo
- Publication number
- JPS56119723A JPS56119723A JP2153280A JP2153280A JPS56119723A JP S56119723 A JPS56119723 A JP S56119723A JP 2153280 A JP2153280 A JP 2153280A JP 2153280 A JP2153280 A JP 2153280A JP S56119723 A JPS56119723 A JP S56119723A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- nonrefined
- manufacture
- high tensile
- rolled
- 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)
Abstract
PURPOSE: To manufacture a nonrefined high tensile steel with a high strength level and superior low temp. toughness by hot rolling a steel contg. a specified percentage of metallic elements under specified conditions followed by cooling at a specified cooling rate.
CONSTITUTION: A steel contg., by wt., 0.03W0.15% C, 0.03W0.60% Si, 0.5W 2.0% Mn, 0.005W0.10% Nb and ≤0.06% sol. Al of further contg. ≤0.15% V and one or two kinds among ≤0.5% each of Ni, Cr, Cu and Mo is heated to ≥1,050°C, rolled at ≥50% total reduction ratio in an austenite recrystallization temp. zone, and further rolled at ≥70% total reduction ratio in a temp. zone under the austenite recrystallization temp. The final finish rolling is carried out at the Ar3 point or above. The rolled plate is cooled from the Ar3 point or above to 400W 550°C under the condition in which the average cooling rate at a central part in the through thickness direction exceeds 30°C/sec, and then it is air cooled.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55021532A JPS601927B2 (en) | 1980-02-25 | 1980-02-25 | Manufacturing method for non-temperature high tensile strength steel with excellent low-temperature toughness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55021532A JPS601927B2 (en) | 1980-02-25 | 1980-02-25 | Manufacturing method for non-temperature high tensile strength steel with excellent low-temperature toughness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56119723A true JPS56119723A (en) | 1981-09-19 |
| JPS601927B2 JPS601927B2 (en) | 1985-01-18 |
Family
ID=12057562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55021532A Expired JPS601927B2 (en) | 1980-02-25 | 1980-02-25 | Manufacturing method for non-temperature high tensile strength steel with excellent low-temperature toughness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS601927B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57134514A (en) * | 1981-02-12 | 1982-08-19 | Kawasaki Steel Corp | Production of high-tensile steel of superior low- temperature toughness and weldability |
| JPS5861224A (en) * | 1981-10-07 | 1983-04-12 | Kobe Steel Ltd | Production of strong and tough non-refined steel plate |
| JPS60204826A (en) * | 1984-03-29 | 1985-10-16 | Sumitomo Metal Ind Ltd | Production of ti high tensile steel having excellent low- temperature toughness |
| KR100415656B1 (en) * | 1996-11-27 | 2004-05-14 | 주식회사 포스코 | MANUFACTURING METHOD OF TENSILE STRENGTH 58 kgf/mm¬2 GRADE STEEL FOR BUILDING CONSTRUCTION HAVING HIGH TEMPERATURE STRENGTH PROPERTIES |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5468719A (en) * | 1977-11-10 | 1979-06-02 | Kawasaki Steel Co | Production of nonthermal refining high tensile steel plate with excellent low temperature flexibility |
| JPS5471714A (en) * | 1977-11-21 | 1979-06-08 | Nippon Kokan Kk <Nkk> | Manufacture of control-rolled high tensile steel with no separation |
-
1980
- 1980-02-25 JP JP55021532A patent/JPS601927B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5468719A (en) * | 1977-11-10 | 1979-06-02 | Kawasaki Steel Co | Production of nonthermal refining high tensile steel plate with excellent low temperature flexibility |
| JPS5471714A (en) * | 1977-11-21 | 1979-06-08 | Nippon Kokan Kk <Nkk> | Manufacture of control-rolled high tensile steel with no separation |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57134514A (en) * | 1981-02-12 | 1982-08-19 | Kawasaki Steel Corp | Production of high-tensile steel of superior low- temperature toughness and weldability |
| JPS6155572B2 (en) * | 1981-02-12 | 1986-11-28 | Kawasaki Steel Co | |
| JPS5861224A (en) * | 1981-10-07 | 1983-04-12 | Kobe Steel Ltd | Production of strong and tough non-refined steel plate |
| JPS60204826A (en) * | 1984-03-29 | 1985-10-16 | Sumitomo Metal Ind Ltd | Production of ti high tensile steel having excellent low- temperature toughness |
| JPH0583606B2 (en) * | 1984-03-29 | 1993-11-26 | Sumitomo Metal Ind | |
| KR100415656B1 (en) * | 1996-11-27 | 2004-05-14 | 주식회사 포스코 | MANUFACTURING METHOD OF TENSILE STRENGTH 58 kgf/mm¬2 GRADE STEEL FOR BUILDING CONSTRUCTION HAVING HIGH TEMPERATURE STRENGTH PROPERTIES |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS601927B2 (en) | 1985-01-18 |
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