GB877793A - Improved process of annealing low carbon steel - Google Patents

Improved process of annealing low carbon steel

Info

Publication number
GB877793A
GB877793A GB62259A GB62259A GB877793A GB 877793 A GB877793 A GB 877793A GB 62259 A GB62259 A GB 62259A GB 62259 A GB62259 A GB 62259A GB 877793 A GB877793 A GB 877793A
Authority
GB
United Kingdom
Prior art keywords
steel
quenching
low carbon
temperature
age
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.)
Expired
Application number
GB62259A
Inventor
Sidney Garber
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.)
British Iron and Steel Research Association BISRA
Original Assignee
British Iron and Steel Research Association BISRA
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 British Iron and Steel Research Association BISRA filed Critical British Iron and Steel Research Association BISRA
Priority to GB62259A priority Critical patent/GB877793A/en
Priority to FR815045A priority patent/FR1244727A/en
Publication of GB877793A publication Critical patent/GB877793A/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
    • 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
    • C21D1/26—Methods of annealing
    • C21D1/32—Soft annealing, e.g. spheroidising

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 Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

A process of annealing cold worked low carbon steel in elongated form comprises rapidly quenching the steel from a subcritical annealing temperature to an age-softening temperature below 300 DEG C. coiling the steel, and allowing it to cool sufficiently slowly for age-softening to occur. The quenching temperature may be 200-250 DEG C. and the steel may be maintained in that range for 30-50 minutes. The steel may be heated rapidly to the subcritical annealing temperature e.g. to 670 DEG C. in 1-10 seconds and may be cooled to 600 DEG C. in 3-4 seconds before quenching. If the quenching is at a temperature above 250 DEG C. the age-softening should be performed in a non-oxidizing atmosphere.
GB62259A 1959-01-07 1959-01-07 Improved process of annealing low carbon steel Expired GB877793A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB62259A GB877793A (en) 1959-01-07 1959-01-07 Improved process of annealing low carbon steel
FR815045A FR1244727A (en) 1959-01-07 1960-01-07 Low carbon steel annealing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB62259A GB877793A (en) 1959-01-07 1959-01-07 Improved process of annealing low carbon steel

Publications (1)

Publication Number Publication Date
GB877793A true GB877793A (en) 1961-09-20

Family

ID=9707585

Family Applications (1)

Application Number Title Priority Date Filing Date
GB62259A Expired GB877793A (en) 1959-01-07 1959-01-07 Improved process of annealing low carbon steel

Country Status (2)

Country Link
FR (1) FR1244727A (en)
GB (1) GB877793A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE396769B (en) * 1972-03-07 1977-10-03 Licencia Talalmanyokat QUICK HEAT TREATMENT OF STEEL

Also Published As

Publication number Publication date
FR1244727A (en) 1960-10-28

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