JPS5582723A - Annealing method for cold rolled steel sheet - Google Patents

Annealing method for cold rolled steel sheet

Info

Publication number
JPS5582723A
JPS5582723A JP15527978A JP15527978A JPS5582723A JP S5582723 A JPS5582723 A JP S5582723A JP 15527978 A JP15527978 A JP 15527978A JP 15527978 A JP15527978 A JP 15527978A JP S5582723 A JPS5582723 A JP S5582723A
Authority
JP
Japan
Prior art keywords
steel sheet
cold rolled
rolled steel
temp
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
Application number
JP15527978A
Other languages
Japanese (ja)
Inventor
Kimitake Korekawa
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP15527978A priority Critical patent/JPS5582723A/en
Publication of JPS5582723A publication Critical patent/JPS5582723A/en
Pending 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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 Sheet Steel (AREA)

Abstract

PURPOSE:To manufacture cold rolled steel sheet excellent in moldability and low in solid solution carbon content, by heating the cold rolled steel sheet while being uncoiled, and by soaking, then by annealing the coiled cold rolled steel sheet. CONSTITUTION:A cold rolled steel sheet is heated at about 600 deg.C by a direct burner etc. without being subjected to electrolytic cleaning or removal of rolling mill lubricant. The rolling mill lubricant residued on the surface of the steel sheet is decomposed and removed. Then the steel sheet is soaked at a temp. 580-850 deg.C in an atmosphere of H2-N2, thereby reducing the oxide formed on the surface thereof. The steel sheet is coiled once again at a temp. 630-720 deg.C, and the coil is charged into an H2-N2 atmosphere and is cooled at a cooling rate, which gives product of sufficiently low in solid solution carbon content, i.e., not larger than 6 deg.C/min., to 300 deg.C, then at a rate not larger than 75 deg.C/hr. in the temp. range 300-150 deg.C. Hereby steel sheet with clean surface and excellent moldability is manufactured by annealing for a short time, without using batch type annealing furnace.
JP15527978A 1978-12-15 1978-12-15 Annealing method for cold rolled steel sheet Pending JPS5582723A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15527978A JPS5582723A (en) 1978-12-15 1978-12-15 Annealing method for cold rolled steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15527978A JPS5582723A (en) 1978-12-15 1978-12-15 Annealing method for cold rolled steel sheet

Publications (1)

Publication Number Publication Date
JPS5582723A true JPS5582723A (en) 1980-06-21

Family

ID=15602420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15527978A Pending JPS5582723A (en) 1978-12-15 1978-12-15 Annealing method for cold rolled steel sheet

Country Status (1)

Country Link
JP (1) JPS5582723A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5192485A (en) * 1990-07-31 1993-03-09 Kawasaki Steel Corp. Continuous annealing line having carburizing/nitriding furnace
JP2015214733A (en) * 2014-05-12 2015-12-03 Ｊｆｅスチール株式会社 Heat treatment installation for hot rolled steel strip

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5192485A (en) * 1990-07-31 1993-03-09 Kawasaki Steel Corp. Continuous annealing line having carburizing/nitriding furnace
JP2015214733A (en) * 2014-05-12 2015-12-03 Ｊｆｅスチール株式会社 Heat treatment installation for hot rolled steel strip

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