JPS5633421A - Continuous annealing treatment for cold rolled steel sheet - Google Patents
Continuous annealing treatment for cold rolled steel sheetInfo
- Publication number
- JPS5633421A JPS5633421A JP10611279A JP10611279A JPS5633421A JP S5633421 A JPS5633421 A JP S5633421A JP 10611279 A JP10611279 A JP 10611279A JP 10611279 A JP10611279 A JP 10611279A JP S5633421 A JPS5633421 A JP S5633421A
- Authority
- JP
- Japan
- Prior art keywords
- cooling chamber
- over ageing
- over
- cold rolled
- 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
- C21D9/52—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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
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)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
PURPOSE:To enable to produce a cold rolled steel sheet for contraction and deep contraction in area by over ageing treatment performed in a over ageing room of reducing atmosphere divided in more than two chambers. CONSTITUTION:After heated and soaked to the annealing temperature by the heating and soaking apparatus of a continuous annealing equipment, a cold rolled steel sheet is annealed through the primary cooling chamber 2, the first over ageing chamber 3, the second over ageing chamber 4, the secondary cooling chamber 5. In the primary cooling chamber 2, a mixed coolant of nitrogen gas and water is flown to cool near the over ageing temperature. And then, with seal mechanisms 7, 8, 9, sheet is made to go through the first and second cooling chamber and the first and second over ageing chambers 3 and 4 which are cut off each other. The interior of the over ageing chambers 3 and 4 are of a reducing gas atmosphere, and, after over ageing treatment is performed at a temperature range of 300-500 deg.C, in the secondary cooling chamber 5, the steel is water cooled to below 350 deg.C, and further, as necessary, cooled slowly from below 90 deg.C-40 deg.C. Continuous annealing can be performed in a very short time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10611279A JPS5633421A (en) | 1979-08-22 | 1979-08-22 | Continuous annealing treatment for cold rolled steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10611279A JPS5633421A (en) | 1979-08-22 | 1979-08-22 | Continuous annealing treatment for cold rolled steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5633421A true JPS5633421A (en) | 1981-04-03 |
Family
ID=14425376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10611279A Pending JPS5633421A (en) | 1979-08-22 | 1979-08-22 | Continuous annealing treatment for cold rolled steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5633421A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6375111A (en) * | 1986-09-16 | 1988-04-05 | イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー | Aramid copolymer system |
| JPH04210430A (en) * | 1990-12-05 | 1992-07-31 | Ngk Insulators Ltd | Continuous annealing apparatus for berylium copper alloy |
-
1979
- 1979-08-22 JP JP10611279A patent/JPS5633421A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6375111A (en) * | 1986-09-16 | 1988-04-05 | イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー | Aramid copolymer system |
| JPH04210430A (en) * | 1990-12-05 | 1992-07-31 | Ngk Insulators Ltd | Continuous annealing apparatus for berylium copper alloy |
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