JPS5496419A - Manufacture of cold rolled steel sheet with superior workability by continuous annealing - Google Patents
Manufacture of cold rolled steel sheet with superior workability by continuous annealingInfo
- Publication number
- JPS5496419A JPS5496419A JP306878A JP306878A JPS5496419A JP S5496419 A JPS5496419 A JP S5496419A JP 306878 A JP306878 A JP 306878A JP 306878 A JP306878 A JP 306878A JP S5496419 A JPS5496419 A JP S5496419A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- sheet
- sec
- heating
- cold rolled
- 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
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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
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 Sheet Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
PURPOSE:To cheaply manufacture the title sheet with a high work hardening coefficient n value and high total elongation by heating a cold rolled sheet from a specific temp. to a soaking temp. at an ultra high heating rate, followed by soaking at the temp. for a short time and overaging. CONSTITUTION:In continuous annealing of a cold rolled sheet, the sheet is heated from 600 deg.C to a soaking temp. of 700-750 deg.C at an ultra high heating rate above 40 deg.C/sec and soaked at the temp. for 5-20 sec. The sheet is then cooled to 300- 500 deg.C at a cooling rate above 10 deg.C/sec and overaged in the temp. range for 10- 300 sec. The method of ultra rapid heating is not esp. restricted, yet one or more kinds of the following methods may be adopted: a method of coating the sheet with a heat absorbent, a directly heating method, a heating method by supplying current, an induction heating method, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP306878A JPS5496419A (en) | 1978-01-14 | 1978-01-14 | Manufacture of cold rolled steel sheet with superior workability by continuous annealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP306878A JPS5496419A (en) | 1978-01-14 | 1978-01-14 | Manufacture of cold rolled steel sheet with superior workability by continuous annealing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5496419A true JPS5496419A (en) | 1979-07-30 |
| JPS5740894B2 JPS5740894B2 (en) | 1982-08-31 |
Family
ID=11547003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP306878A Granted JPS5496419A (en) | 1978-01-14 | 1978-01-14 | Manufacture of cold rolled steel sheet with superior workability by continuous annealing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5496419A (en) |
-
1978
- 1978-01-14 JP JP306878A patent/JPS5496419A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5740894B2 (en) | 1982-08-31 |
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