JPS5681619A - Production of tempered high tensile steel plate - Google Patents
Production of tempered high tensile steel plateInfo
- Publication number
- JPS5681619A JPS5681619A JP15728779A JP15728779A JPS5681619A JP S5681619 A JPS5681619 A JP S5681619A JP 15728779 A JP15728779 A JP 15728779A JP 15728779 A JP15728779 A JP 15728779A JP S5681619 A JPS5681619 A JP S5681619A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- hardening
- high tensile
- tempered
- 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
Abstract
PURPOSE: To produce a tempered high tensile steel plate or superior quality and flatness at low cost by hardening a hot-rolled steel plate in air cooling process and reheating and tempering the same after this.
CONSTITUTION: A carbon steel or alloy ingot after blooming is heated at high temperatures of 1,000W1,200°C, to fine austenite structure, after which it is hot- rolled at ≥700°C temperatures to work the steel plate while preventing the formation of ferrite. Next, it is hardened by air cooling, after which it is reheated and tempered at 650°C, whereby the tempered high tensile steel plate of ≥80kg/cm2 in tensile strength is produced. According to this method, the water hardening process of conventional methods is omitted and therefore the fuel cost for the purpose of reheating, hardening electric power and hardening water cost, etc. required for said process is saved and the production cost is reduced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15728779A JPS5681619A (en) | 1979-12-03 | 1979-12-03 | Production of tempered high tensile steel plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15728779A JPS5681619A (en) | 1979-12-03 | 1979-12-03 | Production of tempered high tensile steel plate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5681619A true JPS5681619A (en) | 1981-07-03 |
Family
ID=15646353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15728779A Pending JPS5681619A (en) | 1979-12-03 | 1979-12-03 | Production of tempered high tensile steel plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5681619A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007037444A (en) * | 2005-08-02 | 2007-02-15 | Iseki & Co Ltd | Seedling planting tine of seedling planting machine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52111414A (en) * | 1976-03-16 | 1977-09-19 | Nippon Kokan Kk <Nkk> | Preparation of high tensile steel superior in toughness |
JPS5337123A (en) * | 1976-09-18 | 1978-04-06 | Nippon Steel Corp | Production of high tensile strength steel excellent in low temperature toughness |
JPS53119219A (en) * | 1977-03-29 | 1978-10-18 | Nippon Steel Corp | Manufacture of weldable high tensile steel |
JPS583011A (en) * | 1981-06-30 | 1983-01-08 | Fujitsu Ltd | Circular arc generation system |
-
1979
- 1979-12-03 JP JP15728779A patent/JPS5681619A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52111414A (en) * | 1976-03-16 | 1977-09-19 | Nippon Kokan Kk <Nkk> | Preparation of high tensile steel superior in toughness |
JPS5337123A (en) * | 1976-09-18 | 1978-04-06 | Nippon Steel Corp | Production of high tensile strength steel excellent in low temperature toughness |
JPS53119219A (en) * | 1977-03-29 | 1978-10-18 | Nippon Steel Corp | Manufacture of weldable high tensile steel |
JPS583011A (en) * | 1981-06-30 | 1983-01-08 | Fujitsu Ltd | Circular arc generation system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007037444A (en) * | 2005-08-02 | 2007-02-15 | Iseki & Co Ltd | Seedling planting tine of seedling planting machine |
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