JPS5493619A - Manufacture of cold rolled steel sheet - Google Patents
Manufacture of cold rolled steel sheetInfo
- Publication number
- JPS5493619A JPS5493619A JP16071977A JP16071977A JPS5493619A JP S5493619 A JPS5493619 A JP S5493619A JP 16071977 A JP16071977 A JP 16071977A JP 16071977 A JP16071977 A JP 16071977A JP S5493619 A JPS5493619 A JP S5493619A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- pickling
- cold rolled
- steel sheet
- rolled steel
- 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
- 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
Abstract
PURPOSE:To manufacture a cold rolled steel sheet in a small space and a short time by taking out an annealed cold rolled steel sheet coil at above 150 deg.C from the inner cover of an annealing furnace, followed by cooling to 100-250 deg.C, pickling and temper rolling. CONSTITUTION:A cold rolled steel sheet coil is annealed in a box annealing furnace under a non-oxidizing atmosphere at 700 deg.C for 4 hr. The annealed coil is cooled in the inner cover of the furnace and taken out at above 150 deg.C from the cover. An oxide film formed on the coil surface at this time is removed by pickling the coil at 100-250 deg.C. Since the pickling is carried out at such a relatively high temp., the prior coil cooling process can be omitted, and a rise in temp. of a pickling soln. results in an increase in pickling speed. Accordingly, the space for cooling the coil is not required, and the pickling is finished in a short time. Finally, temper rolling is carried out to obtain a cold rolled sheet product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16071977A JPS5493619A (en) | 1977-12-30 | 1977-12-30 | Manufacture of cold rolled steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16071977A JPS5493619A (en) | 1977-12-30 | 1977-12-30 | Manufacture of cold rolled steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5493619A true JPS5493619A (en) | 1979-07-24 |
Family
ID=15720983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16071977A Pending JPS5493619A (en) | 1977-12-30 | 1977-12-30 | Manufacture of cold rolled steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5493619A (en) |
-
1977
- 1977-12-30 JP JP16071977A patent/JPS5493619A/en active Pending
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