JPS55128534A - Preparation of cold rolled steel plate - Google Patents
Preparation of cold rolled steel plateInfo
- Publication number
- JPS55128534A JPS55128534A JP3551079A JP3551079A JPS55128534A JP S55128534 A JPS55128534 A JP S55128534A JP 3551079 A JP3551079 A JP 3551079A JP 3551079 A JP3551079 A JP 3551079A JP S55128534 A JPS55128534 A JP S55128534A
- Authority
- JP
- Japan
- Prior art keywords
- subjected
- steel
- steel strip
- temp
- 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
- 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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
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)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
PURPOSE:To prepare a cold rolled steel strip for a deep drawing process in a significantly simple procedure by a method wherein, after a steel is subjected to the hot rolling, the said steel is directly subjected to the cold rolling without descaling and, thereafter, the continuous annealing treatment comprising a specific procedure is applied. CONSTITUTION:A steel slab is subjected to the hot rolling to obtain a steel plate and this obtained steel plate is directly subjected to the cold rolling without removing scales generated during heating and hot rolling to obtain a steel strip. This steel band is continuously subjected to the annealing treatment by using an atmosphere controlable jet stream direct fire type heating furnace having at least one of a heating zone, a holding zone and an over ageing zone. Firstly, the steel strip is rapidly heated to a temp. range of a recrystalizing temp. -860 deg.C in a heating furnace and maintained for 5-30sec in a nonreducing or a weak oxidizing atmosphere. Subsequently, the said steel strip is rapidly quenched from a holding temp. of above 600 deg.C near to an over ageing treatment temp. and subjected to the over ageing treatment at 300-500 deg.C within 20sec-2min. Thereafter, the steel strip is cooled to a room temp. and the oxidized film is removed by the pickling, the wet polishing, the liquid honing or the like and, finally, thus treated steel strip is subjected to the refining roll to produce a cold rolled steel strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3551079A JPS5849621B2 (en) | 1979-03-28 | 1979-03-28 | Manufacturing method of cold rolled steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3551079A JPS5849621B2 (en) | 1979-03-28 | 1979-03-28 | Manufacturing method of cold rolled steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55128534A true JPS55128534A (en) | 1980-10-04 |
| JPS5849621B2 JPS5849621B2 (en) | 1983-11-05 |
Family
ID=12443749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3551079A Expired JPS5849621B2 (en) | 1979-03-28 | 1979-03-28 | Manufacturing method of cold rolled steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5849621B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014305A (en) * | 2012-12-30 | 2013-04-03 | 南阳汉冶特钢有限公司 | Process for increasing production efficiency of open-fire heating and normalizing furnace |
-
1979
- 1979-03-28 JP JP3551079A patent/JPS5849621B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014305A (en) * | 2012-12-30 | 2013-04-03 | 南阳汉冶特钢有限公司 | Process for increasing production efficiency of open-fire heating and normalizing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5849621B2 (en) | 1983-11-05 |
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