JPS57123927A - Production of high tensile steel plate of superior low temperature toughness - Google Patents
Production of high tensile steel plate of superior low temperature toughnessInfo
- Publication number
- JPS57123927A JPS57123927A JP956781A JP956781A JPS57123927A JP S57123927 A JPS57123927 A JP S57123927A JP 956781 A JP956781 A JP 956781A JP 956781 A JP956781 A JP 956781A JP S57123927 A JPS57123927 A JP S57123927A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- steel plate
- high tensile
- slab
- temp
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
Abstract
PURPOSE:To obtain a high tensile hot rolled steel plate having a high degree of low-temp. toughness and strength by rolling a continuously cast steel slab of specific composition for pipelines under controlled temp. conditions and limiting the air cooling time in a low temp. region during rolling stage. CONSTITUTION:Steel contg. <=0.15% C, <=0.70% Si, 0.50-2.50% Mn, <=0.025% P, <=0.005% S, 0.010-0.150% Nb, <=0.070% Al, and if necessary, >=1 kind of limited amts. of V, Ti, Zr, Mo, Cu, Ni, Cr, REM, Ca is continuously cast to a slab of the thickness from 300mm. up to 3 times the thickness of the final product. Such slab is held hot or is heated and is roughly rolled at the point of 1,000- 750 deg.C surface temps., and the finish rolling is completed at Ar3-650 deg.C. During this rolling, the sum total of the air cooling time while not in rolling at >=750 deg.C is suppressed at <=60sec. By such rolling conditions, the high tensile steel plate suited for pipelines for cold climatic districts is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP956781A JPS57123927A (en) | 1981-01-27 | 1981-01-27 | Production of high tensile steel plate of superior low temperature toughness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP956781A JPS57123927A (en) | 1981-01-27 | 1981-01-27 | Production of high tensile steel plate of superior low temperature toughness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57123927A true JPS57123927A (en) | 1982-08-02 |
| JPS6143411B2 JPS6143411B2 (en) | 1986-09-27 |
Family
ID=11723865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP956781A Granted JPS57123927A (en) | 1981-01-27 | 1981-01-27 | Production of high tensile steel plate of superior low temperature toughness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57123927A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014505170A (en) * | 2010-12-28 | 2014-02-27 | ポスコ | High strength steel sheet with excellent cryogenic toughness and method for producing the same |
| CN112143955A (en) * | 2020-08-14 | 2020-12-29 | 包头钢铁（集团）有限责任公司 | REMOM method for improving impact toughness of S355ML flange steel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436793B (en) * | 2013-07-13 | 2016-02-03 | 瞿立双 | The manufacture method of alloy steel for automobile wheel hub |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604252A (en) * | 1983-06-22 | 1985-01-10 | Nec Corp | Semiconductor integrated circuit memory device |
-
1981
- 1981-01-27 JP JP956781A patent/JPS57123927A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604252A (en) * | 1983-06-22 | 1985-01-10 | Nec Corp | Semiconductor integrated circuit memory device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014505170A (en) * | 2010-12-28 | 2014-02-27 | ポスコ | High strength steel sheet with excellent cryogenic toughness and method for producing the same |
| US9255305B2 (en) | 2010-12-28 | 2016-02-09 | Posco | High-strength steel sheet having superior toughness at cryogenic temperatures, and method for manufacturing same |
| CN112143955A (en) * | 2020-08-14 | 2020-12-29 | 包头钢铁（集团）有限责任公司 | REMOM method for improving impact toughness of S355ML flange steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6143411B2 (en) | 1986-09-27 |
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