JPS5493618A - Manufacture of slab for low carbon steel sheet - Google Patents
Manufacture of slab for low carbon steel sheetInfo
- Publication number
- JPS5493618A JPS5493618A JP16032877A JP16032877A JPS5493618A JP S5493618 A JPS5493618 A JP S5493618A JP 16032877 A JP16032877 A JP 16032877A JP 16032877 A JP16032877 A JP 16032877A JP S5493618 A JPS5493618 A JP S5493618A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- molten steel
- content
- manufacture
- slab
- 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)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
PURPOSE: To manufacture a slab for a low carbon steel sheet contg. 0.03W0.10% of C by continuous casting, by subjecting converter molten steel of higher C content then the desired C grade to decarburization and deoxidation with C in the molten steel and Al, Ti, etc. added by vacuum degassing.
CONSTITUTION: In manufacture of molten steel for a low carbon steel sheet contg. 0.03W0.10% of C in a converter, molten steel is discharged when the C content is more than 0.05% at the time of blowing down. This molten steel is supplied to a vacuum degassing unit and degassed in a relatively low vacuum range of 300W10mmHg. At this time, O reacts with C in the steel, forming CO. Thus, decarburization and deoxidation are carried out, and the C content is adjusted to 0.03W 0.10%. Next, Al and Ti are added to further deoxidize the steel so that the O content is limited to below 200 ppm even if the steel absorbs O from air to be contacted up to pouring and casting in a continous casting mold. The Al and Ti are added satisfying Al<0.01% and Ti; 0.005W0.01%. Thereafter, continuous casting is carried out to obtain a superior slab with little pinholes and little inclusions of deoxidation product without isolating the external atmosphere on the mold.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16032877A JPS5493618A (en) | 1977-12-31 | 1977-12-31 | Manufacture of slab for low carbon steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16032877A JPS5493618A (en) | 1977-12-31 | 1977-12-31 | Manufacture of slab for low carbon steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5493618A true JPS5493618A (en) | 1979-07-24 |
| JPS5651211B2 JPS5651211B2 (en) | 1981-12-03 |
Family
ID=15712578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16032877A Granted JPS5493618A (en) | 1977-12-31 | 1977-12-31 | Manufacture of slab for low carbon steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5493618A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59190313A (en) * | 1983-04-09 | 1984-10-29 | Nippon Steel Corp | Manufacture of steel material having superior weldability |
| JPS59232212A (en) * | 1983-06-14 | 1984-12-27 | Nippon Steel Corp | Production of steel |
| CN111139405A (en) * | 2020-03-10 | 2020-05-12 | 唐山中厚板材有限公司 | Production method of low-cost short-process flaw detection-guaranteed medium plate |
-
1977
- 1977-12-31 JP JP16032877A patent/JPS5493618A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59190313A (en) * | 1983-04-09 | 1984-10-29 | Nippon Steel Corp | Manufacture of steel material having superior weldability |
| JPS59232212A (en) * | 1983-06-14 | 1984-12-27 | Nippon Steel Corp | Production of steel |
| CN111139405A (en) * | 2020-03-10 | 2020-05-12 | 唐山中厚板材有限公司 | Production method of low-cost short-process flaw detection-guaranteed medium plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5651211B2 (en) | 1981-12-03 |
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