JPS55100924A - Production of high toughness bainite high tension steel plate having excellent weldability - Google Patents
Production of high toughness bainite high tension steel plate having excellent weldabilityInfo
- Publication number
- JPS55100924A JPS55100924A JP759179A JP759179A JPS55100924A JP S55100924 A JPS55100924 A JP S55100924A JP 759179 A JP759179 A JP 759179A JP 759179 A JP759179 A JP 759179A JP S55100924 A JPS55100924 A JP S55100924A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- steel plate
- production
- rolling
- tension 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 produce steel plate for line pipe in cold regions having excellent strength, toughness and weldability by a method wherein steel having specified compositions is heated at a low temperature and rolled under specified rolling condition to form steel having bainite structure, and the said steel having the above properties after the above rolling treatment or after tempering treatment.
CONSTITUTION: Steel materials contain C 0.003W0.035%, Si<0.4%, Mn 1.4W 2.0%, S<0.006%, Al 0.05W0.08%, Nb 0.01W0.08%, Ti 0.005W0.025%, B 0.0008W0.0018% and N 0.001W0.005%, and have a composition within the range 0≤Ti%-3.4×N%≤0.01. Further, the steel materials may contain REM 0.001W 0.03% and/or Ca 0.0005W0.005% and/or a specified amount of one or more of V, Cr, Mo and Ni, and have a composition within the range 1≤REM/S≤10 and Mn+Cr+2Mo≤2.5. The steel materials are heated to below 1150°C. By subsequent rolling, cumulative rolling reduction at a temperature below 900°C is above 60%, and finishing temperarure is from 550 to below 700°C.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP759179A JPS55100924A (en) | 1979-01-25 | 1979-01-25 | Production of high toughness bainite high tension steel plate having excellent weldability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP759179A JPS55100924A (en) | 1979-01-25 | 1979-01-25 | Production of high toughness bainite high tension steel plate having excellent weldability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55100924A true JPS55100924A (en) | 1980-08-01 |
| JPS5740210B2 JPS5740210B2 (en) | 1982-08-26 |
Family
ID=11670043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP759179A Granted JPS55100924A (en) | 1979-01-25 | 1979-01-25 | Production of high toughness bainite high tension steel plate having excellent weldability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55100924A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5769185A (en) * | 1980-10-17 | 1982-04-27 | Kawasaki Steel Co | High tension large sized steel pipe superior in stopping characteristic for transmitting unstable ductility breaking |
| JPS5852423A (en) * | 1981-09-21 | 1983-03-28 | Kawasaki Steel Corp | Manufacture of unnormalized high tensile boron steel with superior toughness at low temperature and superior weldability |
| JPS58126924A (en) * | 1982-01-22 | 1983-07-28 | Kobe Steel Ltd | Production of thick walled unnormalized steel plate having high toughness |
| JPS5967315A (en) * | 1982-07-09 | 1984-04-17 | マネスマン・アクチエンゲゼルシヤフト | Manufacture of weldable particle large pipe steel sheet |
| JPS60169519A (en) * | 1984-12-24 | 1985-09-03 | Kawasaki Steel Corp | High-tension large-diameter steel pipe having excellent characteristic to stop propagation of unstable ductile fracture |
| JPH05306430A (en) * | 1981-12-25 | 1993-11-19 | Nkk Corp | Steel sheet for galvanizing and its production |
| WO1996009419A1 (en) * | 1994-09-20 | 1996-03-28 | Kawasaki Steel Corporation | Bainite steel material of little scatter of quality and method of manufacturing the same |
| JP2000199011A (en) * | 1999-01-05 | 2000-07-18 | Kawasaki Steel Corp | Production of steel small in variation of material and excellent in low temperature toughness of weld zone |
| KR100406393B1 (en) * | 1998-12-11 | 2004-02-14 | 주식회사 포스코 | The method of manufacturing cold rolled steel sheet with excellent nonaging for vaccum deposition |
| KR100415658B1 (en) * | 1998-11-10 | 2004-03-31 | 주식회사 포스코 | Manufacturing Method of Cold Rolled Steel Sheets for Evaporated Plating Pipes with Excellent Inertia and Machinability |
| 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 |
| JP2007056279A (en) * | 2005-08-22 | 2007-03-08 | Nippon Steel Corp | Steel for welded structure having a tensile strength of 590 N / mm2 and excellent in toughness of base metal and weld heat-affected zone and method for producing the same |
| KR100940664B1 (en) * | 2002-11-25 | 2010-02-05 | 주식회사 포스코 | Manufacturing method of pile steel sheet with excellent resistance weldability and repeated heat treatment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62108405A (en) * | 1985-11-05 | 1987-05-19 | 日立照明株式会社 | Pendant type lighting fixture |
-
1979
- 1979-01-25 JP JP759179A patent/JPS55100924A/en active Granted
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5769185A (en) * | 1980-10-17 | 1982-04-27 | Kawasaki Steel Co | High tension large sized steel pipe superior in stopping characteristic for transmitting unstable ductility breaking |
| JPS5852423A (en) * | 1981-09-21 | 1983-03-28 | Kawasaki Steel Corp | Manufacture of unnormalized high tensile boron steel with superior toughness at low temperature and superior weldability |
| JPS605647B2 (en) * | 1981-09-21 | 1985-02-13 | 川崎製鉄株式会社 | Method for manufacturing boron-containing non-thermal high tensile strength steel with excellent low-temperature toughness and weldability |
| JPH05306430A (en) * | 1981-12-25 | 1993-11-19 | Nkk Corp | Steel sheet for galvanizing and its production |
| JPS58126924A (en) * | 1982-01-22 | 1983-07-28 | Kobe Steel Ltd | Production of thick walled unnormalized steel plate having high toughness |
| JPS5967315A (en) * | 1982-07-09 | 1984-04-17 | マネスマン・アクチエンゲゼルシヤフト | Manufacture of weldable particle large pipe steel sheet |
| JPS60169519A (en) * | 1984-12-24 | 1985-09-03 | Kawasaki Steel Corp | High-tension large-diameter steel pipe having excellent characteristic to stop propagation of unstable ductile fracture |
| US5766381A (en) * | 1994-09-20 | 1998-06-16 | Kawasaki Steel Corporation | Method of producing bainitic steel materials having a less scattering of properties |
| WO1996009419A1 (en) * | 1994-09-20 | 1996-03-28 | Kawasaki Steel Corporation | Bainite steel material of little scatter of quality and method of manufacturing the same |
| US5900076A (en) * | 1994-09-20 | 1999-05-04 | Kawasaki Steel Corporation | Bainitic steel materials having a less scattering of properties and method of producing the same |
| KR100415658B1 (en) * | 1998-11-10 | 2004-03-31 | 주식회사 포스코 | Manufacturing Method of Cold Rolled Steel Sheets for Evaporated Plating Pipes with Excellent Inertia and Machinability |
| KR100406393B1 (en) * | 1998-12-11 | 2004-02-14 | 주식회사 포스코 | The method of manufacturing cold rolled steel sheet with excellent nonaging for vaccum deposition |
| JP2000199011A (en) * | 1999-01-05 | 2000-07-18 | Kawasaki Steel Corp | Production of steel small in variation of material and excellent in low temperature toughness of weld zone |
| 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 |
| KR100940664B1 (en) * | 2002-11-25 | 2010-02-05 | 주식회사 포스코 | Manufacturing method of pile steel sheet with excellent resistance weldability and repeated heat treatment |
| JP2007056279A (en) * | 2005-08-22 | 2007-03-08 | Nippon Steel Corp | Steel for welded structure having a tensile strength of 590 N / mm2 and excellent in toughness of base metal and weld heat-affected zone and method for producing the same |
| JP4523893B2 (en) * | 2005-08-22 | 2010-08-11 | 新日本製鐵株式会社 | Steel for welded structure having a tensile strength of 590 N / mm2 and excellent in toughness of base metal and weld heat-affected zone, and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5740210B2 (en) | 1982-08-26 |
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