JPS5751221A - Method and device for continuous annealing - Google Patents
Method and device for continuous annealingInfo
- Publication number
- JPS5751221A JPS5751221A JP12352980A JP12352980A JPS5751221A JP S5751221 A JPS5751221 A JP S5751221A JP 12352980 A JP12352980 A JP 12352980A JP 12352980 A JP12352980 A JP 12352980A JP S5751221 A JPS5751221 A JP S5751221A
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- steel strip
- water
- tank
- continuous annealing
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/573—Continuous furnaces for strip or wire with cooling
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 Strip Materials And Filament Materials (AREA)
Abstract
PURPOSE:To change and regulate the cooling rates for steel strips over a wide range and make the production of steel strips having wide latitudes of quality characteristics possible by regulating the temp. of the cooling water in a cooling device of a continuous annealing line and the water level of tanks for cooling suitably. CONSTITUTION:A cold rolled steel strip is subjected to recrystallization heat treatment in the heating and soaking zone 4 of a continuous annealing device, after which it is cooled in water cooling tanks 5, 6, passes through an overaging treatment furnace 8, a final cooling tank 9, a surface conditioning tank 10 and a temper mill 12, and is taken up with a tension reel 13. In this case, a spray device 7 for changing cooling rates is provided in the tank 6, and the depth of immersion of the steel strip in the water tank is made adjustable to 0-5m. The width of spray nozzles of the time when the cooling water temp. is above 60 deg.C and below 60 deg.C is set at 1/4-3/4 in the steel strip and larger than the width of the steel strip, and the head pressure is kept at 0.5/cm<2> and >=0.1kg/cm<2>, whereby the cooling rate is regulated to 50-3,000 deg.C/sec.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12352980A JPS5751221A (en) | 1980-09-08 | 1980-09-08 | Method and device for continuous annealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12352980A JPS5751221A (en) | 1980-09-08 | 1980-09-08 | Method and device for continuous annealing |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27788185A Division JPS61166928A (en) | 1985-12-12 | 1985-12-12 | Continuous annealing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5751221A true JPS5751221A (en) | 1982-03-26 |
Family
ID=14862862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12352980A Pending JPS5751221A (en) | 1980-09-08 | 1980-09-08 | Method and device for continuous annealing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5751221A (en) |
-
1980
- 1980-09-08 JP JP12352980A patent/JPS5751221A/en active Pending
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