JPS57108220A - Production of high tensile steel for welded construction - Google Patents
Production of high tensile steel for welded constructionInfo
- Publication number
- JPS57108220A JPS57108220A JP18450480A JP18450480A JPS57108220A JP S57108220 A JPS57108220 A JP S57108220A JP 18450480 A JP18450480 A JP 18450480A JP 18450480 A JP18450480 A JP 18450480A JP S57108220 A JPS57108220 A JP S57108220A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- high tensile
- low
- welded construction
- tensile 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.)
- Pending
Links
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To produce high tensile steel for welded construction having superior cold workability and low temp. toughness and a low yield ratio by subjecting low carbon steel contg. a small amt. of Nb as a basic component to a specific heat treatment and hot rolling.
CONSTITUTION: The steel contains 0.03W0.15% C, 0.03W0.60% Si, 0.5W2.5% Mn, <0.06% sol.Al, and 0.005W0.10% Nb, and further, if necessary, 1 or ≥2 kinds of <0.15% V, <0.5% Ni, <0.5% Cr, <0.5% Cu, and <0.5% Mo. In blooming this ingot, it is cooled down to below 500°C by making the rate of cooling after the end of the rolling higher than that of air cooling. Or it is heated from below the Ac1 point up to an Ac3W950°C temp. region without this pretreatment, and is subjected to hot rolling at ≥40% cumulative draft in the temp. range of said temp.W (Ar3 point-40°C), after which it is quickly cooled, whereby the high tensile steel for welded construction having superior cold workability and low temp. toughtness and a low yield ratio is produced.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18450480A JPS57108220A (en) | 1980-12-25 | 1980-12-25 | Production of high tensile steel for welded construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18450480A JPS57108220A (en) | 1980-12-25 | 1980-12-25 | Production of high tensile steel for welded construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57108220A true JPS57108220A (en) | 1982-07-06 |
Family
ID=16154339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18450480A Pending JPS57108220A (en) | 1980-12-25 | 1980-12-25 | Production of high tensile steel for welded construction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57108220A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57117803U (en) * | 1981-01-14 | 1982-07-21 | ||
| US4572748A (en) * | 1982-11-29 | 1986-02-25 | Nippon Kokan Kabushiki Kaisha | Method of manufacturing high tensile strength steel plates |
| US5732302A (en) * | 1990-10-05 | 1998-03-24 | Asahi Kagaku Kogyo Kabushiki Kaisha | Camera having deformable shock dampening members |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5468719A (en) * | 1977-11-10 | 1979-06-02 | Kawasaki Steel Co | Production of nonthermal refining high tensile steel plate with excellent low temperature flexibility |
| JPS5625926A (en) * | 1979-08-10 | 1981-03-12 | Nippon Steel Corp | Manufacture of high tensile steel |
-
1980
- 1980-12-25 JP JP18450480A patent/JPS57108220A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5468719A (en) * | 1977-11-10 | 1979-06-02 | Kawasaki Steel Co | Production of nonthermal refining high tensile steel plate with excellent low temperature flexibility |
| JPS5625926A (en) * | 1979-08-10 | 1981-03-12 | Nippon Steel Corp | Manufacture of high tensile steel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57117803U (en) * | 1981-01-14 | 1982-07-21 | ||
| US4572748A (en) * | 1982-11-29 | 1986-02-25 | Nippon Kokan Kabushiki Kaisha | Method of manufacturing high tensile strength steel plates |
| US5732302A (en) * | 1990-10-05 | 1998-03-24 | Asahi Kagaku Kogyo Kabushiki Kaisha | Camera having deformable shock dampening members |
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