JPS5747828A - Production of high strength hot rolled steel plate - Google Patents
Production of high strength hot rolled steel plateInfo
- Publication number
- JPS5747828A JPS5747828A JP12329680A JP12329680A JPS5747828A JP S5747828 A JPS5747828 A JP S5747828A JP 12329680 A JP12329680 A JP 12329680A JP 12329680 A JP12329680 A JP 12329680A JP S5747828 A JPS5747828 A JP S5747828A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- hot rolling
- hot rolled
- rolled steel
- high strength
- 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
Abstract
PURPOSE:To obtain a hot rolled steel plate of superior plus formability and surface characteristics by treating steel contg. C, Si, Mn, Cr and Al under specific hot rolling conditions and cooling conditions. CONSTITUTION:A steel contg. 0.03-0.15% C, 0.1-1.0% Si, 1.0-2.5% Mn, 0.55-1.5% Cr, and <=0.1% Al is prepared. Next, this steel is heated to, for example, 1,200 deg.C, after which it is subjected to continuous hot rolling in excess of 820 deg.C and at 900-920 deg.C hot rolling finish temps. and >=35% drafts. Next, the steel plate having completed of hot rolling is conditioned and cooled at 5-40 deg.C/sec average cooling rate, whereby the steel plate of the composition between pearlite and bainite phases is made. Next, this steel plate is quickly cooled at 30-80 deg.C/sec average cooling rates and is coiled, whereby the intended high strength hot rolled steel plate is obtained. This steel plate is higher in elongation and stretch-flanging characteristic as compared with strength, and is low in yield ratio; hence, it is superior in formability and further surface characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12329680A JPS5747828A (en) | 1980-09-05 | 1980-09-05 | Production of high strength hot rolled steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12329680A JPS5747828A (en) | 1980-09-05 | 1980-09-05 | Production of high strength hot rolled steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5747828A true JPS5747828A (en) | 1982-03-18 |
Family
ID=14857022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12329680A Pending JPS5747828A (en) | 1980-09-05 | 1980-09-05 | Production of high strength hot rolled steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5747828A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61138971U (en) * | 1985-09-25 | 1986-08-28 | ||
| JPS61262562A (en) * | 1985-05-14 | 1986-11-20 | 和光設備株式会社 | Heat recovery system by heat pump |
| US4708748A (en) * | 1984-02-18 | 1987-11-24 | Kawasaki Steel Corporation | Method of making cold rolled dual-phase structure steel sheet having an excellent deep drawability |
| WO1995020683A1 (en) * | 1994-01-26 | 1995-08-03 | Kawasaki Steel Corporation | Method of manufacturing stainless steel sheet of high corrosion resistance |
| CN108431282A (en) * | 2015-12-28 | 2018-08-21 | Posco公司 | Tool steel plate and its manufacturing method |
-
1980
- 1980-09-05 JP JP12329680A patent/JPS5747828A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4708748A (en) * | 1984-02-18 | 1987-11-24 | Kawasaki Steel Corporation | Method of making cold rolled dual-phase structure steel sheet having an excellent deep drawability |
| JPS61262562A (en) * | 1985-05-14 | 1986-11-20 | 和光設備株式会社 | Heat recovery system by heat pump |
| JPS61138971U (en) * | 1985-09-25 | 1986-08-28 | ||
| WO1995020683A1 (en) * | 1994-01-26 | 1995-08-03 | Kawasaki Steel Corporation | Method of manufacturing stainless steel sheet of high corrosion resistance |
| CN1044388C (en) * | 1994-01-26 | 1999-07-28 | 川崎制铁株式会社 | Method of manufacturing stainless steel sheet of high corrosion resistance |
| CN108431282A (en) * | 2015-12-28 | 2018-08-21 | Posco公司 | Tool steel plate and its manufacturing method |
| US11214845B2 (en) | 2015-12-28 | 2022-01-04 | Posco | Steel sheet for tool and manufacturing method therefor |
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