JPS56166318A - Manufacture of steel plate - Google Patents
Manufacture of steel plateInfo
- Publication number
- JPS56166318A JPS56166318A JP7101480A JP7101480A JPS56166318A JP S56166318 A JPS56166318 A JP S56166318A JP 7101480 A JP7101480 A JP 7101480A JP 7101480 A JP7101480 A JP 7101480A JP S56166318 A JPS56166318 A JP S56166318A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- temp
- plate
- molten steel
- steel plate
- 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
- 229910000831 Steel Inorganic materials 0.000 title abstract 10
- 239000010959 steel Substances 0.000 title abstract 10
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000001953 recrystallisation Methods 0.000 abstract 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 229910000882 Ca alloy Inorganic materials 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
Landscapes
- Heat Treatment Of Sheet Steel (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE: To manufacture a steel plate with remarkably improved formability by adding Ca to molten steel for a high tensile steel plate with insufficient formability, etc. and subjecting the plate to recrystallization heat treatment to finely precipitate aluminum nitride.
CONSTITUTION: Oxygen in molten steel is fixed with Al to form alumina, and by adding a Ca or Ca alloy wire to the deoxidized molten steel, the alumina in the steel is reduced. By the reduction the steel is refined so as to increase the amount of dissolved Al to 0.001W0.05% and leave 0.0005W0.02% Ca. This refined molten steel is hot rolled at a relatively high temp. such as ≥860°C and coiled at a low coiling temp. such as ≤600°C. The coiled plate is then rolled at a low temp. or cold rolled, slowly heated at 30W200°C/hr rate, and subjected to recrystallization heat treatment at 500°C recrystallization temp., whereby the amount of soluble C and N is decreased, spheroidal carbide is made fine, and 0.002W0.05% AlN is finely precipitated. Thus, the desired steel plate is manufactured.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7101480A JPS5952925B2 (en) | 1980-05-28 | 1980-05-28 | Manufacturing method of steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7101480A JPS5952925B2 (en) | 1980-05-28 | 1980-05-28 | Manufacturing method of steel plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56166318A true JPS56166318A (en) | 1981-12-21 |
| JPS5952925B2 JPS5952925B2 (en) | 1984-12-22 |
Family
ID=13448221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7101480A Expired JPS5952925B2 (en) | 1980-05-28 | 1980-05-28 | Manufacturing method of steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5952925B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6233741A (en) * | 1985-08-05 | 1987-02-13 | Kobe Steel Ltd | Manufacture of ca-treated steel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6048827U (en) * | 1983-09-12 | 1985-04-05 | 戸沢 鉄夫 | Rucksack hammock |
-
1980
- 1980-05-28 JP JP7101480A patent/JPS5952925B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6233741A (en) * | 1985-08-05 | 1987-02-13 | Kobe Steel Ltd | Manufacture of ca-treated steel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5952925B2 (en) | 1984-12-22 |
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