JPS572838A - Production of steel material having uniform internal quality - Google Patents
Production of steel material having uniform internal qualityInfo
- Publication number
- JPS572838A JPS572838A JP7669380A JP7669380A JPS572838A JP S572838 A JPS572838 A JP S572838A JP 7669380 A JP7669380 A JP 7669380A JP 7669380 A JP7669380 A JP 7669380A JP S572838 A JPS572838 A JP S572838A
- Authority
- JP
- Japan
- Prior art keywords
- hot working
- internal quality
- uniform internal
- slabs
- steel material
- 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 prevent segregation of alloy elements and impurities and obtain a steel material having uniform internal quality by subjecting slabs and the like to primary hot working under specific conditions then reheating these and subjecting the same to secondary hot working.
CONSTITUTION: After slabs or cast ingots are heated to Ac1 transformation point W1,250°C, they are subjected to primary hot working of ≥20% reduction of area at Ac1W≤1,200°C. Thence, the slabs or ingots are heated continuously or reheated from the temp. below the end temp. of the primary hot working, and are kept at ≥1,000°C for ≥3 hours, so that segregated elements are diffused sufficiently. Thence, they are subjected to prescribed secondary hot working. According to this method, the segregation of alloy elements and impurity elements is reduced, and steel materials having uniform internal quality for blank materials for lined pipes and the like are obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7669380A JPS601926B2 (en) | 1980-06-09 | 1980-06-09 | Method for producing steel material with uniform internal quality |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7669380A JPS601926B2 (en) | 1980-06-09 | 1980-06-09 | Method for producing steel material with uniform internal quality |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS572838A true JPS572838A (en) | 1982-01-08 |
JPS601926B2 JPS601926B2 (en) | 1985-01-18 |
Family
ID=13612550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7669380A Expired JPS601926B2 (en) | 1980-06-09 | 1980-06-09 | Method for producing steel material with uniform internal quality |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS601926B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57145924A (en) * | 1981-03-05 | 1982-09-09 | Nippon Steel Corp | Production of steel material from ingot |
JPS59197523A (en) * | 1983-04-19 | 1984-11-09 | Sumitomo Metal Ind Ltd | Manufacture of hot rolled steel plate for processing |
JPS61245390A (en) * | 1985-04-18 | 1986-10-31 | 王子製紙株式会社 | Method and apparatus for deinking old paper |
JPS62180013A (en) * | 1986-02-04 | 1987-08-07 | Nippon Kokan Kk <Nkk> | Manufacture of nontemper high tension steel plate having low welding crack susceptibility |
JPS62289690A (en) * | 1986-06-02 | 1987-12-16 | 三菱製紙株式会社 | Pulp bleaching apparatus |
JPS63152491A (en) * | 1986-12-10 | 1988-06-24 | 泉製紙有限会社 | Deinking apparatus for pulping treatment of papermaking old paper raw material |
-
1980
- 1980-06-09 JP JP7669380A patent/JPS601926B2/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57145924A (en) * | 1981-03-05 | 1982-09-09 | Nippon Steel Corp | Production of steel material from ingot |
JPS62967B2 (en) * | 1981-03-05 | 1987-01-10 | Nippon Steel Corp | |
JPS59197523A (en) * | 1983-04-19 | 1984-11-09 | Sumitomo Metal Ind Ltd | Manufacture of hot rolled steel plate for processing |
JPS61245390A (en) * | 1985-04-18 | 1986-10-31 | 王子製紙株式会社 | Method and apparatus for deinking old paper |
JPS62180013A (en) * | 1986-02-04 | 1987-08-07 | Nippon Kokan Kk <Nkk> | Manufacture of nontemper high tension steel plate having low welding crack susceptibility |
JPS62289690A (en) * | 1986-06-02 | 1987-12-16 | 三菱製紙株式会社 | Pulp bleaching apparatus |
JPS63152491A (en) * | 1986-12-10 | 1988-06-24 | 泉製紙有限会社 | Deinking apparatus for pulping treatment of papermaking old paper raw material |
Also Published As
Publication number | Publication date |
---|---|
JPS601926B2 (en) | 1985-01-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS54120214A (en) | Production of unidirectional silicon steel sheets | |
EP0377734A4 (en) | Production of non-oriented high-si steel sheet | |
JPS572838A (en) | Production of steel material having uniform internal quality | |
JPS5719324A (en) | Production of steel for machine structural use for forging having fine structure at high temperature | |
EP0193373B1 (en) | Method of producing cube-on-edge oriented silicon steel from strand cast slab | |
EP0153062A2 (en) | Method for mitigating solidification segregation of steel | |
JPS56102562A (en) | Manufacture of al alloy plate for packing | |
ES8302789A1 (en) | Method for producing grain- oriented silicon steel | |
JPS57114614A (en) | Production of al-containing unidirectional silicon steel plate | |
JPS55144307A (en) | Edge crack preventing method of plate | |
JPS5633156A (en) | Preventing method of surface crack formation in continuously cast slab | |
JPS566709A (en) | Manufacture of cold rolled steel sheet possessing excellent press formability and baking hardenability | |
JPS57120614A (en) | Method for producing steel material from ingot | |
JPS57145923A (en) | Production of steel material from ingot | |
JPS5773121A (en) | Production of alloy steel for structural purpose | |
JPS57145924A (en) | Production of steel material from ingot | |
JPS5577901A (en) | Preventing method for surface cracking of billet in hot rolling pass | |
JPS5588903A (en) | Manufacture of hot coil of continuously casting slab for stainless steel by direct feed rolling | |
JPS572837A (en) | Production of steel material of high young's modulus | |
SU1206325A1 (en) | Method of heating steel ingots | |
JPS57123923A (en) | Production of homogeneous steel material | |
JPS5488859A (en) | Hot rolling method for high toughness, high strength steel materials | |
JPS54112364A (en) | Roll for sendzimir mill and its heat treating method | |
JPS55153656A (en) | Surface mending method for continuously cast slab of ferrite single phase system stainless steel | |
JPS5672124A (en) | Manufacture of case hardening steel |