JPS5585624A - Continuous over-aging method for continuously hot-zinc dipped steel sheet - Google Patents

Continuous over-aging method for continuously hot-zinc dipped steel sheet

Info

Publication number
JPS5585624A
JPS5585624A JP15846578A JP15846578A JPS5585624A JP S5585624 A JPS5585624 A JP S5585624A JP 15846578 A JP15846578 A JP 15846578A JP 15846578 A JP15846578 A JP 15846578A JP S5585624 A JPS5585624 A JP S5585624A
Authority
JP
Japan
Prior art keywords
steel sheet
hot
temp
zinc
passing
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
JP15846578A
Other languages
Japanese (ja)
Other versions
JPS6352088B2 (en
Inventor
Hisao Imatomi
Naonori Moriya
Masato Mukai
Ichiu Takagi
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 Nisshin Co Ltd
Original Assignee
Nisshin Steel Co 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 Nisshin Steel Co Ltd filed Critical Nisshin Steel Co Ltd
Priority to JP15846578A priority Critical patent/JPS5585624A/en
Publication of JPS5585624A publication Critical patent/JPS5585624A/en
Publication of JPS6352088B2 publication Critical patent/JPS6352088B2/ja
Granted 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

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)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To soften the material of steel sheet which has been continuously annealed and hot-zinc dipped so as to improve the workability, by over-aging the steel sheet. CONSTITUTION:Steel sheet 4 which has been hot-zinc dipped by in-line type annealing process is heated while passing through an induction heating zone 1 of a heat treating furnace to a temp. of 425-460 deg.C. The steel sheet is maintained at the temp. at least for 2-4min. while passing through a soaking zone 2, then it is subjected to control-cooling in a control-cooling zone 3 at a rate near natural cooling. Or it is rapidly heated to about 300 deg.C while passing through the induction heating zone 1, maintained in the soaking zone 2, 3 at a temp. of 340-370 deg.C at least for 16min., and is allowed to cool. Application of the above-described heat cycle to a steel sheet softens the material and improves the workability of the steel sheet which has been hot-zinc dipped after continuous annealing. Either horizontal or vertical heat treating furnace may produce similar results.
JP15846578A 1978-12-25 1978-12-25 Continuous over-aging method for continuously hot-zinc dipped steel sheet Granted JPS5585624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15846578A JPS5585624A (en) 1978-12-25 1978-12-25 Continuous over-aging method for continuously hot-zinc dipped steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15846578A JPS5585624A (en) 1978-12-25 1978-12-25 Continuous over-aging method for continuously hot-zinc dipped steel sheet

Publications (2)

Publication Number Publication Date
JPS5585624A true JPS5585624A (en) 1980-06-27
JPS6352088B2 JPS6352088B2 (en) 1988-10-18

Family

ID=15672326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15846578A Granted JPS5585624A (en) 1978-12-25 1978-12-25 Continuous over-aging method for continuously hot-zinc dipped steel sheet

Country Status (1)

Country Link
JP (1) JPS5585624A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6258497B1 (en) * 1992-07-29 2001-07-10 International Business Machines Corporation Precise endpoint detection for etching processes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6258497B1 (en) * 1992-07-29 2001-07-10 International Business Machines Corporation Precise endpoint detection for etching processes

Also Published As

Publication number Publication date
JPS6352088B2 (en) 1988-10-18

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