JPS5729528A - Preparation of thick hot rolled high tension steel belt having excellent low temperature toughness - Google Patents
Preparation of thick hot rolled high tension steel belt having excellent low temperature toughnessInfo
- Publication number
- JPS5729528A JPS5729528A JP10330580A JP10330580A JPS5729528A JP S5729528 A JPS5729528 A JP S5729528A JP 10330580 A JP10330580 A JP 10330580A JP 10330580 A JP10330580 A JP 10330580A JP S5729528 A JPS5729528 A JP S5729528A
- Authority
- JP
- Japan
- Prior art keywords
- less
- steel belt
- low temperature
- hot rolled
- steel
- 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 prepare the thick hot rolled high tension steel belt having excellent strength and low temperature toughness, by carrying out the hot rolling treatment of a V-containing steel according to a specific condition and by giving full play to fine particle action and acceleration action for low temperature transformation due to V.
CONSTITUTION: A slab of V steel containing 0.02W0.15%C, 0.60% or less Si, 0.50W2.20% Mn, 0.010% or less S, 0.10% or less sol. Al and 0.05W0.30% V or of V steel further containing one element or at least two elements of 0.50% or less Cu, 0.5% or less Ni, 0.50% or less Cr and 0.50% or less Mo or 100ppm or less Ca or containing these elements compositely is hot rolled into a steel belt at a processing ratio of 70% or more at 1,100°C or higher and the rolling of the steel belt is finished in a temperature range of 850W680°C. This is rapidly cooled at a cooling rate more than 5°C/sec, and is wound up into a coil at 500W300°C. Thus, the thick hot rolled steel belt being suitable for a base material for line pipes, industrial machines and structures, etc. and having excellent strength and low temperature toughness can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10330580A JPS6026808B2 (en) | 1980-07-28 | 1980-07-28 | Method for manufacturing thick-walled hot-rolled high-strength steel strip with excellent low-temperature toughness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10330580A JPS6026808B2 (en) | 1980-07-28 | 1980-07-28 | Method for manufacturing thick-walled hot-rolled high-strength steel strip with excellent low-temperature toughness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5729528A true JPS5729528A (en) | 1982-02-17 |
| JPS6026808B2 JPS6026808B2 (en) | 1985-06-26 |
Family
ID=14350510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10330580A Expired JPS6026808B2 (en) | 1980-07-28 | 1980-07-28 | Method for manufacturing thick-walled hot-rolled high-strength steel strip with excellent low-temperature toughness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6026808B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58136717A (en) * | 1982-02-05 | 1983-08-13 | Sumitomo Metal Ind Ltd | Manufacture of high tensile hot rolled steel strip containing vanadium |
| JPH0320407A (en) * | 1989-06-19 | 1991-01-29 | Kobe Steel Ltd | Method for preventing oxidation of grain boundary in high strength cold-rolled steel sheet |
| JPH05256459A (en) * | 1991-12-20 | 1993-10-05 | Matsushita Electric Ind Co Ltd | Heating cooker |
| KR20040003317A (en) * | 2002-07-02 | 2004-01-13 | 주식회사 포스코 | API-X80 hot steel plate manufacturing method for ductile fracture ratio excellent |
| KR100452303B1 (en) * | 2002-06-21 | 2004-10-08 | 주식회사 포스코 | Manufacturing method of high-tension steel for line pipe having excellent tenacity at low temperature |
| KR100564883B1 (en) * | 2001-11-13 | 2006-03-30 | 주식회사 포스코 | Manufacturing method of hot coil for usage as a line pipe |
-
1980
- 1980-07-28 JP JP10330580A patent/JPS6026808B2/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58136717A (en) * | 1982-02-05 | 1983-08-13 | Sumitomo Metal Ind Ltd | Manufacture of high tensile hot rolled steel strip containing vanadium |
| JPH0320407A (en) * | 1989-06-19 | 1991-01-29 | Kobe Steel Ltd | Method for preventing oxidation of grain boundary in high strength cold-rolled steel sheet |
| JPH05256459A (en) * | 1991-12-20 | 1993-10-05 | Matsushita Electric Ind Co Ltd | Heating cooker |
| KR100564883B1 (en) * | 2001-11-13 | 2006-03-30 | 주식회사 포스코 | Manufacturing method of hot coil for usage as a line pipe |
| KR100452303B1 (en) * | 2002-06-21 | 2004-10-08 | 주식회사 포스코 | Manufacturing method of high-tension steel for line pipe having excellent tenacity at low temperature |
| KR20040003317A (en) * | 2002-07-02 | 2004-01-13 | 주식회사 포스코 | API-X80 hot steel plate manufacturing method for ductile fracture ratio excellent |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6026808B2 (en) | 1985-06-26 |
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