JPS57158329A - Working method - Google Patents

Working method

Info

Publication number
JPS57158329A
JPS57158329A JP4449281A JP4449281A JPS57158329A JP S57158329 A JPS57158329 A JP S57158329A JP 4449281 A JP4449281 A JP 4449281A JP 4449281 A JP4449281 A JP 4449281A JP S57158329 A JPS57158329 A JP S57158329A
Authority
JP
Japan
Prior art keywords
strips
furnace
blowing
rates
joint
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
JP4449281A
Other languages
Japanese (ja)
Other versions
JPS623215B2 (en
Inventor
Kikuma Izumi
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co Ltd
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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP4449281A priority Critical patent/JPS57158329A/en
Publication of JPS57158329A publication Critical patent/JPS57158329A/en
Publication of JPS623215B2 publication Critical patent/JPS623215B2/ja
Granted 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

Abstract

PURPOSE:To maintain the heating temp. of metallic strips to prescribed value in a continuous heat treatment furnace for the strips by controlling the transfer speeds of the strips and the blowing rates of gases in conformity with the passage of the joint of the strips when the thickness of the strips change. CONSTITUTION:In the case of changing, for example, a thin strip m1 to a thick strip M1 in a floating continuous heat treatment furnace, the quantity of heat is so controlled as to eliminate the change in the temps. of the strips m1, m2 at the outlet of the furnace. More specifically, in order to increase the quantity of heat of the thick strip m2, the transfer speed of both strips m1, m2 is lowered in conformity with the thick strip m2 upon arriving of the joint C at the inlet of the furnace. At this same instant, the rates of blowing of gases in respective zonesI-V are lowered. The rates of blowing are increased successively from the zones through which the joint C has passed. Thereby, the sufficient quantity of heat is obtained with both the strips m1, m2, and the temp. at the outlet of the furnace is maintained without any change.
JP4449281A 1981-03-25 1981-03-25 Working method Granted JPS57158329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4449281A JPS57158329A (en) 1981-03-25 1981-03-25 Working method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4449281A JPS57158329A (en) 1981-03-25 1981-03-25 Working method

Publications (2)

Publication Number Publication Date
JPS57158329A true JPS57158329A (en) 1982-09-30
JPS623215B2 JPS623215B2 (en) 1987-01-23

Family

ID=12693045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4449281A Granted JPS57158329A (en) 1981-03-25 1981-03-25 Working method

Country Status (1)

Country Link
JP (1) JPS57158329A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5137586A (en) * 1991-01-02 1992-08-11 Klink James H Method for continuous annealing of metal strips
EP0728847A1 (en) * 1995-02-21 1996-08-28 Daido Tokushuko Kabushiki Kaisha Method of heat treatment of a metal strip

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5137586A (en) * 1991-01-02 1992-08-11 Klink James H Method for continuous annealing of metal strips
EP0728847A1 (en) * 1995-02-21 1996-08-28 Daido Tokushuko Kabushiki Kaisha Method of heat treatment of a metal strip

Also Published As

Publication number Publication date
JPS623215B2 (en) 1987-01-23

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