JPS5760021A - Production of steel plate - Google Patents
Production of steel plateInfo
- Publication number
- JPS5760021A JPS5760021A JP13520180A JP13520180A JPS5760021A JP S5760021 A JPS5760021 A JP S5760021A JP 13520180 A JP13520180 A JP 13520180A JP 13520180 A JP13520180 A JP 13520180A JP S5760021 A JPS5760021 A JP S5760021A
- Authority
- JP
- Japan
- Prior art keywords
- slabs
- strength
- water flow
- flow density
- limited
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE:To produce steel plates of different strengths only through controlling of rolling processes and improve efficiency by changing the cooling conditions after hot rolling of part of plural slabs and the rest from the same tapping unit. CONSTITUTION:Part of slabs B obtained from the same tapping unit A, for example, part out of a group B-2 or group B-3 are hot-rolled to temps. in excess of 1,000 deg.C, immediately after which they are passed through a uniform and constant cooling zone of <=2.0m<3>/min.m<2> surface area water flow density from above 600 deg.C. The remaining slabs are not subjected to quenching after the rolling. In this way, a general material D-1 and a high strength material D-2 are obtained. The heating temp. is limited mainly for the purposes of making segregation structure uniform by austentizing continuously cast blank materials and for diffusing the hydrogen of ingots. The cooling start temp. is limited because there is a strong correlation with the water flow density and the strength and controlling such as strength change is easy, although this varies with the types of steels. The water flow density is limited because the improvement in strength and the like saturates approximately. It is equally well to change the cooling conditions for part of the same slabs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13520180A JPS5760021A (en) | 1980-09-30 | 1980-09-30 | Production of steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13520180A JPS5760021A (en) | 1980-09-30 | 1980-09-30 | Production of steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5760021A true JPS5760021A (en) | 1982-04-10 |
Family
ID=15146207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13520180A Pending JPS5760021A (en) | 1980-09-30 | 1980-09-30 | Production of steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5760021A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54116053A (en) * | 1978-03-01 | 1979-09-10 | Sumitomo Chem Co Ltd | Aromatic poly-ester resin blend having improved transparency |
| JPS61212259A (en) * | 1985-03-15 | 1986-09-20 | Taka Seisakusho:Kk | Method for roasting meat and apparatus therefor |
| JP2007192455A (en) * | 2006-01-19 | 2007-08-02 | Fujitsu General Ltd | Air conditioner |
| CN115161553A (en) * | 2022-06-22 | 2022-10-11 | 马鞍山钢铁股份有限公司 | Hot-rolled H-shaped steel with yield strength of 550MPa and-20 ℃ longitudinal and transverse low-temperature impact toughness and production method thereof |
-
1980
- 1980-09-30 JP JP13520180A patent/JPS5760021A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54116053A (en) * | 1978-03-01 | 1979-09-10 | Sumitomo Chem Co Ltd | Aromatic poly-ester resin blend having improved transparency |
| JPS61212259A (en) * | 1985-03-15 | 1986-09-20 | Taka Seisakusho:Kk | Method for roasting meat and apparatus therefor |
| JP2007192455A (en) * | 2006-01-19 | 2007-08-02 | Fujitsu General Ltd | Air conditioner |
| CN115161553A (en) * | 2022-06-22 | 2022-10-11 | 马鞍山钢铁股份有限公司 | Hot-rolled H-shaped steel with yield strength of 550MPa and-20 ℃ longitudinal and transverse low-temperature impact toughness and production method thereof |
| CN115161553B (en) * | 2022-06-22 | 2023-08-29 | 马鞍山钢铁股份有限公司 | Hot rolled H-shaped steel with 550 MPa-grade yield strength and low-temperature impact toughness at minus 20 ℃ in longitudinal and transverse directions and production method thereof |
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