JPS57126950A - Production of killed steel ingot for hot rolling - Google Patents
Production of killed steel ingot for hot rollingInfo
- Publication number
- JPS57126950A JPS57126950A JP1086581A JP1086581A JPS57126950A JP S57126950 A JPS57126950 A JP S57126950A JP 1086581 A JP1086581 A JP 1086581A JP 1086581 A JP1086581 A JP 1086581A JP S57126950 A JPS57126950 A JP S57126950A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- hot rolling
- steel ingot
- killed steel
- ingot
- 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
- Continuous Casting (AREA)
Abstract
PURPOSE: To obtain a killed steel ingot for hot rolling which is free from surface defects by adding Zr instead of Ti in a limited amount such as to satisfy a specified relationship with the total amount of N, when continuously casting a B-containing steel of specified composition.
CONSTITUTION: A steel containing up to 0.50% of C, up to 0.75% of Si, up to 2.0% of Mn, up to 0.04% of P, up to 0.05% of S, up to 0.09% of Al, up to 0.01% of N and 0.005W0.06% of Zr as well as up to 0.003% of B, the balance being Fe and unavoidable impurities, wherein TatalZr-6.5TotalN≥0, is melted. Further, Mo or at least one member selected from the group consisting of Ni, Cr, Cu and W and the group consisting of rare earth metals, Ca and Hf is added to the steel in specified amounts, if required. The melted steel is continuously cast to produce a predetermined ingot. Accordingly, a killed steel ingot for hot rolling enhanced in required quality characteristics can be obtained while avoiding the generation of surface detects characteristic of B-containing steels.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1086581A JPS57126950A (en) | 1981-01-29 | 1981-01-29 | Production of killed steel ingot for hot rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1086581A JPS57126950A (en) | 1981-01-29 | 1981-01-29 | Production of killed steel ingot for hot rolling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57126950A true JPS57126950A (en) | 1982-08-06 |
| JPH0135907B2 JPH0135907B2 (en) | 1989-07-27 |
Family
ID=11762239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1086581A Granted JPS57126950A (en) | 1981-01-29 | 1981-01-29 | Production of killed steel ingot for hot rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57126950A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61204352A (en) * | 1985-03-07 | 1986-09-10 | Nippon Steel Corp | High-strength untempered steel material as warm forged |
| JPS61204353A (en) * | 1985-03-07 | 1986-09-10 | Nippon Steel Corp | Steel material with excellent strength and toughness even after warm forging |
| CN102776322A (en) * | 2012-08-03 | 2012-11-14 | 北京科技大学 | Method for treating impurities in pipe line steel by adopting nucleant refined crystal grains |
| CN109136743A (en) * | 2018-07-13 | 2019-01-04 | 舞阳钢铁有限责任公司 | A kind of 1 grade of equipment large-scale steel ingot of nuclear power projects core and its production method |
-
1981
- 1981-01-29 JP JP1086581A patent/JPS57126950A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61204352A (en) * | 1985-03-07 | 1986-09-10 | Nippon Steel Corp | High-strength untempered steel material as warm forged |
| JPS61204353A (en) * | 1985-03-07 | 1986-09-10 | Nippon Steel Corp | Steel material with excellent strength and toughness even after warm forging |
| CN102776322A (en) * | 2012-08-03 | 2012-11-14 | 北京科技大学 | Method for treating impurities in pipe line steel by adopting nucleant refined crystal grains |
| CN109136743A (en) * | 2018-07-13 | 2019-01-04 | 舞阳钢铁有限责任公司 | A kind of 1 grade of equipment large-scale steel ingot of nuclear power projects core and its production method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0135907B2 (en) | 1989-07-27 |
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