JPS5741323A - Manufacture of refined thick steel products with superior characteristic stopping brittle rupture propagation - Google Patents
Manufacture of refined thick steel products with superior characteristic stopping brittle rupture propagationInfo
- Publication number
- JPS5741323A JPS5741323A JP11744080A JP11744080A JPS5741323A JP S5741323 A JPS5741323 A JP S5741323A JP 11744080 A JP11744080 A JP 11744080A JP 11744080 A JP11744080 A JP 11744080A JP S5741323 A JPS5741323 A JP S5741323A
- Authority
- JP
- Japan
- Prior art keywords
- point
- steel products
- manufacture
- temp
- brittle rupture
- 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 obtain steel products with superior characteristics stopping brittle rupture propagation by subjecting a steel slab contg. a specified percentage of C, Si, Mn, Al, Nb, etc. to rolling, heating, cooling and tempering under specified conditions.
CONSTITUTION: A steel slab consisting of, by wt., 0.02W0.2% C, 0.05W0.50% Si, 0.5W2.0% Mn, 0.005W0.1% Al and 0.01W0.08% Nb as basic components, ≤0.006% S and the balance Fe or further contg. 0.003W0.04% Ti, ≥1 kinds among ≤1.0% Ni, ≤0.4% Mo, ≤0.5% Cu, ≤0.1% V, ≤0.5% Cr and ≤0.003% B, and 0.001% Ca and/or REM is rolled at above a temp. at which 0.01% Nb is converted into soluble Nb, and it is further rolled at ≤900°C and ≥40% reduction ratio. The rolled slab is cooled to the Ar1 transformation point or below, heated to a temp. 50°C above the Ac1 point to the Ac3 point in ≤20min, held at the temp. for 5min, cooled at the air cooling rate or above, and tempered at the Ac1 point or below.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11744080A JPS5741323A (en) | 1980-08-26 | 1980-08-26 | Manufacture of refined thick steel products with superior characteristic stopping brittle rupture propagation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11744080A JPS5741323A (en) | 1980-08-26 | 1980-08-26 | Manufacture of refined thick steel products with superior characteristic stopping brittle rupture propagation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5741323A true JPS5741323A (en) | 1982-03-08 |
Family
ID=14711697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11744080A Pending JPS5741323A (en) | 1980-08-26 | 1980-08-26 | Manufacture of refined thick steel products with superior characteristic stopping brittle rupture propagation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5741323A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57117803U (en) * | 1981-01-14 | 1982-07-21 | ||
| JPS6217127A (en) * | 1985-07-17 | 1987-01-26 | Nippon Steel Corp | Manufacture of deformed pipe having superior toughness at low temperature |
| US4755234A (en) * | 1984-08-09 | 1988-07-05 | Nippon Kokan Kabushiki Kaisha | Method of manufacturing pressure vessel steel with high strength and toughness |
| WO2017130885A1 (en) * | 2016-01-29 | 2017-08-03 | Ｊｆｅスチール株式会社 | Steel sheet for high-strength/high-toughness steel tubes, and method for producing same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5457418A (en) * | 1977-10-18 | 1979-05-09 | Nippon Kokan Kk <Nkk> | Manufacture of high toughness, refined steel |
| JPS5597425A (en) * | 1979-01-19 | 1980-07-24 | Nippon Kokan Kk <Nkk> | Preparation of high-tensile steel with low yield ratio, low carbon and low alloy |
| JPS6334205A (en) * | 1986-07-30 | 1988-02-13 | Sumitomo Rubber Ind Ltd | Tire cover |
-
1980
- 1980-08-26 JP JP11744080A patent/JPS5741323A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5457418A (en) * | 1977-10-18 | 1979-05-09 | Nippon Kokan Kk <Nkk> | Manufacture of high toughness, refined steel |
| JPS5597425A (en) * | 1979-01-19 | 1980-07-24 | Nippon Kokan Kk <Nkk> | Preparation of high-tensile steel with low yield ratio, low carbon and low alloy |
| JPS6334205A (en) * | 1986-07-30 | 1988-02-13 | Sumitomo Rubber Ind Ltd | Tire cover |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57117803U (en) * | 1981-01-14 | 1982-07-21 | ||
| US4755234A (en) * | 1984-08-09 | 1988-07-05 | Nippon Kokan Kabushiki Kaisha | Method of manufacturing pressure vessel steel with high strength and toughness |
| JPS6217127A (en) * | 1985-07-17 | 1987-01-26 | Nippon Steel Corp | Manufacture of deformed pipe having superior toughness at low temperature |
| JPH0213006B2 (en) * | 1985-07-17 | 1990-04-03 | Nippon Steel Corp | |
| WO2017130885A1 (en) * | 2016-01-29 | 2017-08-03 | Ｊｆｅスチール株式会社 | Steel sheet for high-strength/high-toughness steel tubes, and method for producing same |
| JPWO2017130885A1 (en) * | 2016-01-29 | 2018-02-01 | Ｊｆｅスチール株式会社 | Steel sheet for high strength and high toughness steel pipe and manufacturing method thereof |
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