JPS57155317A - Decarburization-preventive heating method for steel rolling process - Google Patents

Decarburization-preventive heating method for steel rolling process

Info

Publication number
JPS57155317A
JPS57155317A JP4195881A JP4195881A JPS57155317A JP S57155317 A JPS57155317 A JP S57155317A JP 4195881 A JP4195881 A JP 4195881A JP 4195881 A JP4195881 A JP 4195881A JP S57155317 A JPS57155317 A JP S57155317A
Authority
JP
Japan
Prior art keywords
steel materials
decarburization
rolling process
residence time
heated
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
JP4195881A
Other languages
Japanese (ja)
Inventor
Masaaki Murakami
Tsuneo Kuwahata
Takashi 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.)
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 JP4195881A priority Critical patent/JPS57155317A/en
Publication of JPS57155317A publication Critical patent/JPS57155317A/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
    • C21D1/34—Methods of heating

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)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To effectively prevent the decarburization in rolling process of steel materials by operating a heating furnace in such a way that the residence time of steel materials in the heating furnace until the time when the surface temperature of the steel materials to be heated attains a specific temperature amounts in a specific per cent in the whole residence time. CONSTITUTION:In the operation of a heating furnace in the rolling process of steel materials, the residence time of steel materials to be heated in the furnace until time when the surface temperature of the steel materials attains 650 deg.C is set up so that it amounts 80-90% of the whole residence time. Thus, the ferrite decarburization in the steel materials to be heated can be prevented and the total decarburization depth and the amount of scale formed can therefore be greatly improved.
JP4195881A 1981-03-23 1981-03-23 Decarburization-preventive heating method for steel rolling process Pending JPS57155317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4195881A JPS57155317A (en) 1981-03-23 1981-03-23 Decarburization-preventive heating method for steel rolling process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4195881A JPS57155317A (en) 1981-03-23 1981-03-23 Decarburization-preventive heating method for steel rolling process

Publications (1)

Publication Number Publication Date
JPS57155317A true JPS57155317A (en) 1982-09-25

Family

ID=12622691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4195881A Pending JPS57155317A (en) 1981-03-23 1981-03-23 Decarburization-preventive heating method for steel rolling process

Country Status (1)

Country Link
JP (1) JPS57155317A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01298119A (en) * 1988-05-27 1989-12-01 Sumitomo Electric Ind Ltd Method for heating billet for hot working
CN105387824A (en) * 2015-11-20 2016-03-09 武汉钢铁(集团)公司 Quenched steel decarburized layer depth measuring method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01298119A (en) * 1988-05-27 1989-12-01 Sumitomo Electric Ind Ltd Method for heating billet for hot working
CN105387824A (en) * 2015-11-20 2016-03-09 武汉钢铁(集团)公司 Quenched steel decarburized layer depth measuring method
CN105387824B (en) * 2015-11-20 2018-07-10 武汉钢铁有限公司 Hardened steel decarburized layer deepness measuring method

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