JPS6421010A - Production of high-strength steel plate having excellent toughness - Google Patents
Production of high-strength steel plate having excellent toughnessInfo
- Publication number
- JPS6421010A JPS6421010A JP6060088A JP6060088A JPS6421010A JP S6421010 A JPS6421010 A JP S6421010A JP 6060088 A JP6060088 A JP 6060088A JP 6060088 A JP6060088 A JP 6060088A JP S6421010 A JPS6421010 A JP S6421010A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- temp
- steel plate
- transformation
- rolling
- 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
- Metal Rolling (AREA)
Abstract
PURPOSE:To obtain a steel plate having excellent low-temp. toughness under high heat economy by casting steel specified in contents of Ti, Mn, S, etc., then subjecting the cast steel to controlled cooling in the state of coarse austenite grains or after rolling which obviates formation of the finer grains of the coarse austenite grains. CONSTITUTION:The steel consisting, by weight %, 0.05-0.20% C, 0.001-0.0250% S, 0.05-0.80% Si, 0.010-0.100% Al, 0.50-2.00% Mn, 0.0025-0.0100% Ni, 0.005-0.100% Ti, and further consisting of 0.0005-0.0060% B and the balance Fe and inevitable components is smelted. After this steel is cast and solidified, the steel is cooled in the state of the Ar3 point temp. without being rolled or after rolling at about <=1.5 reduction ratio in a recrystallization range while the temp. is at the Ar3 point or above. This cooling is executed continuously at 1.5-30 deg.C/sec cooling rate in the temp. range from at least the start of transformation of the fine Widmanstatten-like ferrite plate structure to the end of the transformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6060088A JPS6421010A (en) | 1987-04-24 | 1988-03-16 | Production of high-strength steel plate having excellent toughness |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9968687 | 1987-04-24 | ||
| JP6060088A JPS6421010A (en) | 1987-04-24 | 1988-03-16 | Production of high-strength steel plate having excellent toughness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6421010A true JPS6421010A (en) | 1989-01-24 |
Family
ID=26401678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6060088A Pending JPS6421010A (en) | 1987-04-24 | 1988-03-16 | Production of high-strength steel plate having excellent toughness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6421010A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0646656A1 (en) | 1993-04-26 | 1995-04-05 | Nippon Steel Corporation | Sheet steel excellent in flanging capability and process for producing the same |
| EP0949340A1 (en) | 1996-06-28 | 1999-10-13 | Nippon Steel Corporation | Steel having excellent outer surface scc resistance for pipeline |
| JP2011502785A (en) * | 2007-12-11 | 2011-01-27 | 武▲漢鋼鉄▼（集▲団▼）公司 | Method and system for producing wide strip steel by continuous casting and rolling of thin slabs |
-
1988
- 1988-03-16 JP JP6060088A patent/JPS6421010A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0646656A1 (en) | 1993-04-26 | 1995-04-05 | Nippon Steel Corporation | Sheet steel excellent in flanging capability and process for producing the same |
| EP0949340A1 (en) | 1996-06-28 | 1999-10-13 | Nippon Steel Corporation | Steel having excellent outer surface scc resistance for pipeline |
| JP2011502785A (en) * | 2007-12-11 | 2011-01-27 | 武▲漢鋼鉄▼（集▲団▼）公司 | Method and system for producing wide strip steel by continuous casting and rolling of thin slabs |
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