JPS54157709A - Heat treatment of steel strip - Google Patents

Heat treatment of steel strip

Info

Publication number
JPS54157709A
JPS54157709A JP6654678A JP6654678A JPS54157709A JP S54157709 A JPS54157709 A JP S54157709A JP 6654678 A JP6654678 A JP 6654678A JP 6654678 A JP6654678 A JP 6654678A JP S54157709 A JPS54157709 A JP S54157709A
Authority
JP
Japan
Prior art keywords
steel strip
direct heating
oxide film
cold rolled
air ratio
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
JP6654678A
Other languages
Japanese (ja)
Other versions
JPS5929651B2 (en
Inventor
Hajime Hinoto
Hiromitsu Naito
Kazuhiko Yoshinari
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 JP6654678A priority Critical patent/JPS5929651B2/en
Publication of JPS54157709A publication Critical patent/JPS54157709A/en
Publication of JPS5929651B2 publication Critical patent/JPS5929651B2/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

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)
  • Control Of Heat Treatment Processes (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE:To obtain heat-treated steel strip of good surface behavior by heat-treating a cold rolled steel strip under a proper condition in a direct heating furnace. CONSTITUTION:A cold rolled steel strip is heated, without cleaning treatment, e.g., electrolytic cleaning, etc., in a continuous heating process using a direct heating furnace to burn off rolling oil present, where the thickness of oxide film on the surface of the steel strip after direct heating is regulated to less than AAngstrom by controlling temperature and/or air ratio. Subsequently, the oxide film is erased in a reduction process. The proper condition used is a region surrounded by the curves A, B, and C and the air ratio line of 0.8 as shown in the Fig.
JP6654678A 1978-06-02 1978-06-02 Heat treatment method for steel strip Expired JPS5929651B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6654678A JPS5929651B2 (en) 1978-06-02 1978-06-02 Heat treatment method for steel strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6654678A JPS5929651B2 (en) 1978-06-02 1978-06-02 Heat treatment method for steel strip

Publications (2)

Publication Number Publication Date
JPS54157709A true JPS54157709A (en) 1979-12-12
JPS5929651B2 JPS5929651B2 (en) 1984-07-21

Family

ID=13318998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6654678A Expired JPS5929651B2 (en) 1978-06-02 1978-06-02 Heat treatment method for steel strip

Country Status (1)

Country Link
JP (1) JPS5929651B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0499822A (en) * 1990-08-15 1992-03-31 Nippon Steel Corp Method and apparatus for continuously annealing steel strip
JP2006045615A (en) * 2004-08-04 2006-02-16 Jfe Steel Kk Method for producing cold rolled steel sheet
CN103014305A (en) * 2012-12-30 2013-04-03 南阳汉冶特钢有限公司 Process for increasing production efficiency of open-fire heating and normalizing furnace

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20062187A1 (en) * 2006-11-14 2008-05-15 Sviluppo Materiali Spa ANNEALING AND PICKLING PROCESS
CN104673977A (en) * 2015-02-10 2015-06-03 山西太钢不锈钢股份有限公司 Startup warming method of continuous annealing furnace containing non-oxidation section silicon steel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0499822A (en) * 1990-08-15 1992-03-31 Nippon Steel Corp Method and apparatus for continuously annealing steel strip
JP2006045615A (en) * 2004-08-04 2006-02-16 Jfe Steel Kk Method for producing cold rolled steel sheet
JP4576921B2 (en) * 2004-08-04 2010-11-10 Ｊｆｅスチール株式会社 Cold rolled steel sheet manufacturing method
CN103014305A (en) * 2012-12-30 2013-04-03 南阳汉冶特钢有限公司 Process for increasing production efficiency of open-fire heating and normalizing furnace

Also Published As

Publication number Publication date
JPS5929651B2 (en) 1984-07-21

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