JPS6455333A - Production of high-tensile steel having excellent arresting characteristic - Google Patents
Production of high-tensile steel having excellent arresting characteristicInfo
- Publication number
- JPS6455333A JPS6455333A JP21104887A JP21104887A JPS6455333A JP S6455333 A JPS6455333 A JP S6455333A JP 21104887 A JP21104887 A JP 21104887A JP 21104887 A JP21104887 A JP 21104887A JP S6455333 A JPS6455333 A JP S6455333A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- low
- carbon
- bainite
- hot
- 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 stably obtain the title high-tensile steel having excellent arresting characteristic and tensile strength by introducing working strains on the surface of the low-carbon steel or low-carbon low alloy provided with a structure consisting essentially of bainite by quenching, and changing the structure of only the surface part to martensite by heat treatment. CONSTITUTION:The low-carbon steel or low-carbon low alloy is hot-rolled at a finishing temp. higher than the Ar3 point, and then immediately quenched to obtain a structure consisting essentially of bainite or of bainite plus martensite. At the same time, the steel is worked in an unrecrystallized austenite region in the hot rolling during the hot rolling and/or hot working or cold working is applied to impart strains to the steel. The steel is then tempered and/or stress-relieved at a temp. lower than the Ac1 point to change only the surface part of the steel corresponding to >=5% of the sheet thickness to a ferrite structure. By this method, a high-tensile steel having an excellent arresting characteristic and having >=60kgf/mm<2> tensile strength is stably obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21104887A JPS6455333A (en) | 1987-08-25 | 1987-08-25 | Production of high-tensile steel having excellent arresting characteristic |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21104887A JPS6455333A (en) | 1987-08-25 | 1987-08-25 | Production of high-tensile steel having excellent arresting characteristic |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6455333A true JPS6455333A (en) | 1989-03-02 |
Family
ID=16599517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21104887A Pending JPS6455333A (en) | 1987-08-25 | 1987-08-25 | Production of high-tensile steel having excellent arresting characteristic |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6455333A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6455334A (en) * | 1987-08-25 | 1989-03-02 | Nippon Kokan Kk | Production of high-tensile steel having low surface hardness |
CN113201682A (en) * | 2021-04-15 | 2021-08-03 | 华南理工大学 | Bainite weathering steel and production method thereof |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62211160A (en) * | 1986-03-13 | 1987-09-17 | Shinko Electric Co Ltd | Thermal printer |
JPS6452019A (en) * | 1987-08-20 | 1989-02-28 | Nippon Kokan Kk | Production of high tensile steel having low surface hardness |
-
1987
- 1987-08-25 JP JP21104887A patent/JPS6455333A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62211160A (en) * | 1986-03-13 | 1987-09-17 | Shinko Electric Co Ltd | Thermal printer |
JPS6452019A (en) * | 1987-08-20 | 1989-02-28 | Nippon Kokan Kk | Production of high tensile steel having low surface hardness |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6455334A (en) * | 1987-08-25 | 1989-03-02 | Nippon Kokan Kk | Production of high-tensile steel having low surface hardness |
CN113201682A (en) * | 2021-04-15 | 2021-08-03 | 华南理工大学 | Bainite weathering steel and production method thereof |
CN113201682B (en) * | 2021-04-15 | 2022-05-24 | 华南理工大学 | Bainite weathering steel and production method thereof |
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