JPS57134518A - Production of high-toughness high-tensile steel - Google Patents
Production of high-toughness high-tensile steelInfo
- Publication number
- JPS57134518A JPS57134518A JP2052481A JP2052481A JPS57134518A JP S57134518 A JPS57134518 A JP S57134518A JP 2052481 A JP2052481 A JP 2052481A JP 2052481 A JP2052481 A JP 2052481A JP S57134518 A JPS57134518 A JP S57134518A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- rolled
- specific
- draft
- austenite
- 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 obtain titled steel without increasing alloy elements by growing finely worked ferrite through rolling within a two phase region of specific temp. and fine bainite and islandlike martensite through accelerated cooling to specific temp. to a steel of the composition of an adequate content of Nb.
CONSTITUTION: A slab of 0.02W0.18 C by %, 0.10W0.50 Si, 1.0W2.5 Mn, 0.005W 0.060 Al, 0.01W1.0 Nb, and if necessary, ≥1 kinds of specific amts. of Ti, Ni, Mo, Cu, V, Cr, B, Ca, REM, and ≤0.008 S and Fe out of the balance unavoidable impurities is heated to the temp. at which Nb solutionizes at ≥0.01. Thereafter, it is rolled to ≥50% comulative draft at temp. above Ar3+150°C, following to which it is rolled at ≥30% cumulative draft in an uncrecrystallized austenite region of Ar3WAr3+150°C. Thence, it is rolled to ≥10% cumulative draft in a two phase region of austenite in Ar3-80°CWAr3 and ferrite, after which it is cooled immediately down to <500°C at 2W20°C/sec cooling rates.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56020524A JPS609086B2 (en) | 1981-02-14 | 1981-02-14 | Manufacturing method of high toughness and high tensile strength steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56020524A JPS609086B2 (en) | 1981-02-14 | 1981-02-14 | Manufacturing method of high toughness and high tensile strength steel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57134518A true JPS57134518A (en) | 1982-08-19 |
JPS609086B2 JPS609086B2 (en) | 1985-03-07 |
Family
ID=12029541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56020524A Expired JPS609086B2 (en) | 1981-02-14 | 1981-02-14 | Manufacturing method of high toughness and high tensile strength steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS609086B2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5748617A (en) * | 1980-09-08 | 1982-03-20 | Hitachi Ltd | Level detector for finely divided particles |
JPS5983722A (en) * | 1982-11-05 | 1984-05-15 | Kawasaki Steel Corp | Preparation of low carbon equivalent unnormalized high tensile steel plate |
JPH0841536A (en) * | 1994-07-29 | 1996-02-13 | Kawasaki Steel Corp | Production of high tensile strength steel plate small in nonuniformity of hardness in plate thickness direction and excellent in dwtt property |
WO1996017965A1 (en) * | 1994-12-06 | 1996-06-13 | Exxon Research & Engineering Company | Method of making dual phase steel plate |
WO1996017966A1 (en) * | 1994-12-06 | 1996-06-13 | Exxon Research & Engineering Company | Dual-phase steel and method thereof |
KR100526123B1 (en) * | 2001-04-10 | 2005-11-08 | 주식회사 포스코 | A method for manufacturing steel wire rod for cold forging with low deviation in mechanical properties |
KR20160117536A (en) | 2014-03-17 | 2016-10-10 | 제이에프이 스틸 가부시키가이샤 | Steel material for welding |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5126615A (en) * | 1974-08-30 | 1976-03-05 | Sumitomo Metal Ind | HICHOSHITSUKOCHORYOKUKOHAN NO SEIZOHO |
JPS55115924A (en) * | 1979-03-02 | 1980-09-06 | Nippon Kokan Kk <Nkk> | Production of high toughness high tensile steel plate |
-
1981
- 1981-02-14 JP JP56020524A patent/JPS609086B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5126615A (en) * | 1974-08-30 | 1976-03-05 | Sumitomo Metal Ind | HICHOSHITSUKOCHORYOKUKOHAN NO SEIZOHO |
JPS55115924A (en) * | 1979-03-02 | 1980-09-06 | Nippon Kokan Kk <Nkk> | Production of high toughness high tensile steel plate |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5748617A (en) * | 1980-09-08 | 1982-03-20 | Hitachi Ltd | Level detector for finely divided particles |
JPS5983722A (en) * | 1982-11-05 | 1984-05-15 | Kawasaki Steel Corp | Preparation of low carbon equivalent unnormalized high tensile steel plate |
JPH0841536A (en) * | 1994-07-29 | 1996-02-13 | Kawasaki Steel Corp | Production of high tensile strength steel plate small in nonuniformity of hardness in plate thickness direction and excellent in dwtt property |
WO1996017965A1 (en) * | 1994-12-06 | 1996-06-13 | Exxon Research & Engineering Company | Method of making dual phase steel plate |
WO1996017966A1 (en) * | 1994-12-06 | 1996-06-13 | Exxon Research & Engineering Company | Dual-phase steel and method thereof |
US5545270A (en) * | 1994-12-06 | 1996-08-13 | Exxon Research And Engineering Company | Method of producing high strength dual phase steel plate with superior toughness and weldability |
CN1075118C (en) * | 1994-12-06 | 2001-11-21 | 埃克森研究工程公司 | Dual-phase high strength steel sheet with good toughness and weldability |
KR100526123B1 (en) * | 2001-04-10 | 2005-11-08 | 주식회사 포스코 | A method for manufacturing steel wire rod for cold forging with low deviation in mechanical properties |
KR20160117536A (en) | 2014-03-17 | 2016-10-10 | 제이에프이 스틸 가부시키가이샤 | Steel material for welding |
Also Published As
Publication number | Publication date |
---|---|
JPS609086B2 (en) | 1985-03-07 |
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