JPS5584203A - Surface cracking suppressing method of slab at hot rolling - Google Patents

Surface cracking suppressing method of slab at hot rolling

Info

Publication number
JPS5584203A
JPS5584203A JP15666978A JP15666978A JPS5584203A JP S5584203 A JPS5584203 A JP S5584203A JP 15666978 A JP15666978 A JP 15666978A JP 15666978 A JP15666978 A JP 15666978A JP S5584203 A JPS5584203 A JP S5584203A
Authority
JP
Japan
Prior art keywords
slab
rolling
hot rolling
surface cracking
hot
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
JP15666978A
Other languages
Japanese (ja)
Other versions
JPS5852444B2 (en
Inventor
Hiroo Suzuki
Satoru Nishimura
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 JP53156669A priority Critical patent/JPS5852444B2/en
Publication of JPS5584203A publication Critical patent/JPS5584203A/en
Publication of JPS5852444B2 publication Critical patent/JPS5852444B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Steel (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To effectively suppress surface cracking by rolling a slab after subjecting the same to extra slow cooling down to hot rolling start temperature during cooling process in succession to melting and solidifying in direct feed rolling, etc. of the slab. CONSTITUTION:In direct feed rolling or hot charge rolling of a slab, it is subjected to extra slow cooling of 0.01-1 deg.C/sec. down to hot rolling start temperature during cooling process in succession to melting and solidifying, whereby harmful deposits are made harmless. Thence, it is subjected to hot rolling, whereby the slab surface cracking at the hot rolling is effectively suppressed.
JP53156669A 1978-12-19 1978-12-19 Method for suppressing steel billet surface cracking during hot rolling Expired JPS5852444B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53156669A JPS5852444B2 (en) 1978-12-19 1978-12-19 Method for suppressing steel billet surface cracking during hot rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53156669A JPS5852444B2 (en) 1978-12-19 1978-12-19 Method for suppressing steel billet surface cracking during hot rolling

Publications (2)

Publication Number Publication Date
JPS5584203A true JPS5584203A (en) 1980-06-25
JPS5852444B2 JPS5852444B2 (en) 1983-11-22

Family

ID=15632707

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53156669A Expired JPS5852444B2 (en) 1978-12-19 1978-12-19 Method for suppressing steel billet surface cracking during hot rolling

Country Status (1)

Country Link
JP (1) JPS5852444B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59208018A (en) * 1983-05-12 1984-11-26 Kawasaki Steel Corp Improvement of toughness of steel plate
EP0153062A2 (en) * 1984-02-10 1985-08-28 Nippon Steel Corporation Method for mitigating solidification segregation of steel
JPS60166150A (en) * 1984-02-10 1985-08-29 Nippon Steel Corp Continuous casting method of steel
US4809765A (en) * 1984-12-28 1989-03-07 Nippon Steel Corporation Method for controlling solidification segregation of steel
JP2020066047A (en) * 2018-10-26 2020-04-30 日本製鉄株式会社 Manufacturing method of steel piece

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52105520A (en) * 1976-03-02 1977-09-05 Nippon Steel Corp Continuous casting and continuous hot rolling of aluminium-killed stee l
JPS52131919A (en) * 1976-04-28 1977-11-05 Nippon Steel Corp Production of a1-s# killed steel plate by direct fot rolling of continuous cast slab

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52105520A (en) * 1976-03-02 1977-09-05 Nippon Steel Corp Continuous casting and continuous hot rolling of aluminium-killed stee l
JPS52131919A (en) * 1976-04-28 1977-11-05 Nippon Steel Corp Production of a1-s# killed steel plate by direct fot rolling of continuous cast slab

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59208018A (en) * 1983-05-12 1984-11-26 Kawasaki Steel Corp Improvement of toughness of steel plate
EP0153062A2 (en) * 1984-02-10 1985-08-28 Nippon Steel Corporation Method for mitigating solidification segregation of steel
JPS60166150A (en) * 1984-02-10 1985-08-29 Nippon Steel Corp Continuous casting method of steel
JPH0245536B2 (en) * 1984-02-10 1990-10-09 Nippon Steel Corp
US4809765A (en) * 1984-12-28 1989-03-07 Nippon Steel Corporation Method for controlling solidification segregation of steel
JP2020066047A (en) * 2018-10-26 2020-04-30 日本製鉄株式会社 Manufacturing method of steel piece

Also Published As

Publication number Publication date
JPS5852444B2 (en) 1983-11-22

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