JPS558405A - Manufacture of cold rolled steel sheet excellent in workability - Google Patents

Manufacture of cold rolled steel sheet excellent in workability

Info

Publication number
JPS558405A
JPS558405A JP7858178A JP7858178A JPS558405A JP S558405 A JPS558405 A JP S558405A JP 7858178 A JP7858178 A JP 7858178A JP 7858178 A JP7858178 A JP 7858178A JP S558405 A JPS558405 A JP S558405A
Authority
JP
Japan
Prior art keywords
steel strip
rolled steel
cold rolled
workability
manufacture
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
JP7858178A
Other languages
Japanese (ja)
Other versions
JPS5836651B2 (en
Inventor
Soji Matsuo
Hiroshi Hayakawa
Takao Kawanami
Hirohiko Tsuru
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 JP7858178A priority Critical patent/JPS5836651B2/en
Publication of JPS558405A publication Critical patent/JPS558405A/en
Publication of JPS5836651B2 publication Critical patent/JPS5836651B2/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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips

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)
  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:To manufacture the cold rolled steel strip excellent in the workability, by heating the cold rolled steel strip to the specified temperature in a short time which is a function of the finishing temperature of the cold rolling, and by continuing to this with the annealing. CONSTITUTION:The continuously hot rolled steel strip supplied from the payoff reel 1, passes through the shear 2 and the welder 3, and is cold rolled by the cold rolling mill 5 through the front looper 4. The temperature of the steel strip at the end point of the cold rolling is taken as T deg.K; the steel strip is heated at least above 673 deg.K, within a time not exceeding the critical time represented by [2800divided by (T/ 100)<2>] seconds, and is continuously annealed in the annealing furnace 6. The size of crystal grain of the steel strip becomes larger than 20mum, which gives an excellent workability.
JP7858178A 1978-06-30 1978-06-30 Manufacturing method for cold-rolled steel sheets with excellent workability Expired JPS5836651B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7858178A JPS5836651B2 (en) 1978-06-30 1978-06-30 Manufacturing method for cold-rolled steel sheets with excellent workability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7858178A JPS5836651B2 (en) 1978-06-30 1978-06-30 Manufacturing method for cold-rolled steel sheets with excellent workability

Publications (2)

Publication Number Publication Date
JPS558405A true JPS558405A (en) 1980-01-22
JPS5836651B2 JPS5836651B2 (en) 1983-08-10

Family

ID=13665866

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7858178A Expired JPS5836651B2 (en) 1978-06-30 1978-06-30 Manufacturing method for cold-rolled steel sheets with excellent workability

Country Status (1)

Country Link
JP (1) JPS5836651B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6263243A (en) * 1985-09-11 1987-03-19 Kubota Ltd Forward and backward switching device

Also Published As

Publication number Publication date
JPS5836651B2 (en) 1983-08-10

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