JPS5690925A - Continuous annealing method of cold-rolled sheet steel - Google Patents

Continuous annealing method of cold-rolled sheet steel

Info

Publication number
JPS5690925A
JPS5690925A JP16682779A JP16682779A JPS5690925A JP S5690925 A JPS5690925 A JP S5690925A JP 16682779 A JP16682779 A JP 16682779A JP 16682779 A JP16682779 A JP 16682779A JP S5690925 A JPS5690925 A JP S5690925A
Authority
JP
Japan
Prior art keywords
cold
rolled sheet
sheet steel
gas
temp
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
JP16682779A
Other languages
Japanese (ja)
Other versions
JPS5933172B2 (en
Inventor
Hajime Hinoto
Hiromitsu Naito
Takao Saito
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 JP16682779A priority Critical patent/JPS5933172B2/en
Priority to CA000367063A priority patent/CA1152870A/en
Priority to EP80108148A priority patent/EP0032583B1/en
Priority to DE8080108148T priority patent/DE3068827D1/en
Priority to BR8008511A priority patent/BR8008511A/en
Publication of JPS5690925A publication Critical patent/JPS5690925A/en
Publication of JPS5933172B2 publication Critical patent/JPS5933172B2/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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

Abstract

PURPOSE:To obtain a cold-rolled sheet steel of superior surface characteristic by heating the cold-rolled sheet steel in a radiation heating furnace, thence soaking the same for a specific time in the furnace in a specific temp. range, thereafter subjecting the same to gas-liquid cooling and pickling. CONSTITUTION:A cold-rolled sheet steel is raised of temperature and is heated in a radiation heating furnace, thence it is soaked in the radiation heating furnace for >=10sec in a temp. range from recrystallization temp. down to Ac3 point. Following to this, it is subjected to gas-liquid cooling at 10-300 deg.C/sec cooling rates. An N gas is preferable as a gas to be used and water as the liquid. After the cooling, it is pickled and rinsed, and in order to prevent the formation of rust, it is desirable to neutralize the same with an alkali soln.
JP16682779A 1979-12-24 1979-12-24 Continuous annealing treatment method for cold rolled steel sheets Expired JPS5933172B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP16682779A JPS5933172B2 (en) 1979-12-24 1979-12-24 Continuous annealing treatment method for cold rolled steel sheets
CA000367063A CA1152870A (en) 1979-12-24 1980-12-18 Process for continuously annealing of a cold rolled steel strip
EP80108148A EP0032583B1 (en) 1979-12-24 1980-12-22 Process for continuously annealing of a cold rolled steel strip
DE8080108148T DE3068827D1 (en) 1979-12-24 1980-12-22 Process for continuously annealing of a cold rolled steel strip
BR8008511A BR8008511A (en) 1979-12-24 1980-12-23 PROCESS FOR CONTINUOUS RECOVERY OF A COLD LAMINATED STEEL STRIP

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16682779A JPS5933172B2 (en) 1979-12-24 1979-12-24 Continuous annealing treatment method for cold rolled steel sheets

Publications (2)

Publication Number Publication Date
JPS5690925A true JPS5690925A (en) 1981-07-23
JPS5933172B2 JPS5933172B2 (en) 1984-08-14

Family

ID=15838390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16682779A Expired JPS5933172B2 (en) 1979-12-24 1979-12-24 Continuous annealing treatment method for cold rolled steel sheets

Country Status (1)

Country Link
JP (1) JPS5933172B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60142809U (en) * 1984-03-02 1985-09-21 ソニー株式会社 Magnetic head device for magnetic disks
JPS6222267A (en) * 1985-07-23 1987-01-30 Mitsubishi Electric Corp Head support device for both-side flexible disc

Also Published As

Publication number Publication date
JPS5933172B2 (en) 1984-08-14

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