JPS5739119A - Preparation of steel plate - Google Patents
Preparation of steel plateInfo
- Publication number
- JPS5739119A JPS5739119A JP11406480A JP11406480A JPS5739119A JP S5739119 A JPS5739119 A JP S5739119A JP 11406480 A JP11406480 A JP 11406480A JP 11406480 A JP11406480 A JP 11406480A JP S5739119 A JPS5739119 A JP S5739119A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- cooling
- temperature
- changing
- changed
- 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 Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
PURPOSE: To prepare the steel plate having a hardness difference in a longitudinal direction and in a plate thickness direction, by producing a temperature difference between a fixed position and other position in the steel plate and by changing the cooling start temperature of the steel plate or by changing a cooling water amount density in a range of a specific value or less.
CONSTITUTION: When preparing the steel plate having a material quality adjusted by cooling hot steel plate having a temperature of 600°C or higher, a correcting machine 4 and a local heating device 5 are installed after a finishing rolling mill 2. The shape of steel plate 3 immediately after rolling is corrected by the correcting machine 4, and the local heating device 5 produces a temperature difference between a fixed position and other position in the steel plate 3. Subsequently, the steel plate 3 is cooled by a cooling device 6 and at that time the cooling start temperature of the steel plate 3 is changed or a cooling water amount density is changed in a range of 2m3/min.m2 or less. Further, the both cooling methods may be used in combination.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11406480A JPS5739119A (en) | 1980-08-21 | 1980-08-21 | Preparation of steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11406480A JPS5739119A (en) | 1980-08-21 | 1980-08-21 | Preparation of steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5739119A true JPS5739119A (en) | 1982-03-04 |
Family
ID=14628121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11406480A Pending JPS5739119A (en) | 1980-08-21 | 1980-08-21 | Preparation of steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5739119A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112126757A (en) * | 2019-06-24 | 2020-12-25 | 宝山钢铁股份有限公司 | Thick-direction variable-strength hardness cold-rolled strip steel and manufacturing method thereof |
| WO2024002155A1 (en) * | 2022-06-28 | 2024-01-04 | 宝山钢铁股份有限公司 | Manufacturing method for strip steel having variable strength and hardness in width direction and strip steel |
-
1980
- 1980-08-21 JP JP11406480A patent/JPS5739119A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112126757A (en) * | 2019-06-24 | 2020-12-25 | 宝山钢铁股份有限公司 | Thick-direction variable-strength hardness cold-rolled strip steel and manufacturing method thereof |
| JP2022538838A (en) * | 2019-06-24 | 2022-09-06 | 宝山鋼鉄股▲分▼有限公司 | Cold-rolled strip steel with variable strength and hardness in the plate thickness direction and its manufacturing method |
| WO2024002155A1 (en) * | 2022-06-28 | 2024-01-04 | 宝山钢铁股份有限公司 | Manufacturing method for strip steel having variable strength and hardness in width direction and strip steel |
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