JPS5316309A - Annealing method for preventing graphitization of surface of low carbon cold rolled steel sheet - Google Patents

Annealing method for preventing graphitization of surface of low carbon cold rolled steel sheet

Info

Publication number
JPS5316309A
JPS5316309A JP9147476A JP9147476A JPS5316309A JP S5316309 A JPS5316309 A JP S5316309A JP 9147476 A JP9147476 A JP 9147476A JP 9147476 A JP9147476 A JP 9147476A JP S5316309 A JPS5316309 A JP S5316309A
Authority
JP
Japan
Prior art keywords
steel sheet
low carbon
rolled steel
cold rolled
annealing method
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
JP9147476A
Other languages
Japanese (ja)
Inventor
Toshiyuki Nakamura
Motoo Sato
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP9147476A priority Critical patent/JPS5316309A/en
Publication of JPS5316309A publication Critical patent/JPS5316309A/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere

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 prevent the formation of graphite at the surface of steel sheet os far as possible, by regulating the ratio of CO2/CO in the annealing gas containing NNX gases as th e main components, when the recrystallization annealing of the low carbon steel sheet is carride out after the cold rolling.
JP9147476A 1976-07-30 1976-07-30 Annealing method for preventing graphitization of surface of low carbon cold rolled steel sheet Pending JPS5316309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9147476A JPS5316309A (en) 1976-07-30 1976-07-30 Annealing method for preventing graphitization of surface of low carbon cold rolled steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9147476A JPS5316309A (en) 1976-07-30 1976-07-30 Annealing method for preventing graphitization of surface of low carbon cold rolled steel sheet

Publications (1)

Publication Number Publication Date
JPS5316309A true JPS5316309A (en) 1978-02-15

Family

ID=14027382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9147476A Pending JPS5316309A (en) 1976-07-30 1976-07-30 Annealing method for preventing graphitization of surface of low carbon cold rolled steel sheet

Country Status (1)

Country Link
JP (1) JPS5316309A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5549871A (en) * 1993-01-21 1996-08-27 Servomex Plc Sensor for combustible gases

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5549871A (en) * 1993-01-21 1996-08-27 Servomex Plc Sensor for combustible gases

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