JPS55128545A - Continuous annealing equipment - Google Patents

Continuous annealing equipment

Info

Publication number
JPS55128545A
JPS55128545A JP3470179A JP3470179A JPS55128545A JP S55128545 A JPS55128545 A JP S55128545A JP 3470179 A JP3470179 A JP 3470179A JP 3470179 A JP3470179 A JP 3470179A JP S55128545 A JPS55128545 A JP S55128545A
Authority
JP
Japan
Prior art keywords
divided
uniform heating
steel strip
sheet steel
zone
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
Application number
JP3470179A
Other languages
Japanese (ja)
Other versions
JPS5839892B2 (en
Inventor
Hiroshi Iida
Ikuo Umehara
Tetsuya Ohara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP3470179A priority Critical patent/JPS5839892B2/en
Publication of JPS55128545A publication Critical patent/JPS55128545A/en
Publication of JPS5839892B2 publication Critical patent/JPS5839892B2/en
Expired legal-status Critical Current

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

Abstract

PURPOSE:To provide heat cycle for cold rolled sheet steel with excellent workability without increasing the length of equipment by a method wherein gradual cooling zone consisting of group of divided heater and divided cooler which can be on and off in uniform heating zone of continuous annealing equipment. CONSTITUTION:In passing direction in uniform heating furnace 10 in annealing equipment, plural divided heaters 22 which can be on and off are installed facing steel strip. In each pass at the side of sheet steel outlet, are overlappingly installed divided type forced convection coolers which gradually cool steel strip by injecting, in multistage, slit type gas jet onto the both surfaces of steel strip. Divided heaters and coolers in each zone at each pass are properly on and off so as to obtain CQ, DQ, DDQ, grade heat cycles for target sheet steel, so that steel strip will have uniform heating required. The mechanism decreases the length of furnace, eliminates energy loss in the uniform heating zone, and provides cold rolled sheet steel with excellent workability in high productivity.
JP3470179A 1979-03-24 1979-03-24 Continuous annealing equipment for cold rolled steel sheets Expired JPS5839892B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3470179A JPS5839892B2 (en) 1979-03-24 1979-03-24 Continuous annealing equipment for cold rolled steel sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3470179A JPS5839892B2 (en) 1979-03-24 1979-03-24 Continuous annealing equipment for cold rolled steel sheets

Publications (2)

Publication Number Publication Date
JPS55128545A true JPS55128545A (en) 1980-10-04
JPS5839892B2 JPS5839892B2 (en) 1983-09-02

Family

ID=12421662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3470179A Expired JPS5839892B2 (en) 1979-03-24 1979-03-24 Continuous annealing equipment for cold rolled steel sheets

Country Status (1)

Country Link
JP (1) JPS5839892B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116733A (en) * 1981-01-13 1982-07-20 Nippon Kokan Kk <Nkk> Continuous annealing installation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH065198Y2 (en) * 1988-08-03 1994-02-09 株式会社壽 Writing instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57116733A (en) * 1981-01-13 1982-07-20 Nippon Kokan Kk <Nkk> Continuous annealing installation
JPS6214613B2 (en) * 1981-01-13 1987-04-03 Nippon Kokan Kk

Also Published As

Publication number Publication date
JPS5839892B2 (en) 1983-09-02

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