JPS5584201A - Surface cracking suppressing method of slab at hot rolling - Google Patents

Surface cracking suppressing method of slab at hot rolling

Info

Publication number
JPS5584201A
JPS5584201A JP15666778A JP15666778A JPS5584201A JP S5584201 A JPS5584201 A JP S5584201A JP 15666778 A JP15666778 A JP 15666778A JP 15666778 A JP15666778 A JP 15666778A JP S5584201 A JPS5584201 A JP S5584201A
Authority
JP
Japan
Prior art keywords
slab
rolling
surface cracking
hot rolling
suppressing method
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
JP15666778A
Other languages
Japanese (ja)
Other versions
JPS5852442B2 (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 JP53156667A priority Critical patent/JPS5852442B2/en
Publication of JPS5584201A publication Critical patent/JPS5584201A/en
Publication of JPS5852442B2 publication Critical patent/JPS5852442B2/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)
  • Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:To effectively suppress surface cracking by rolling a slab after subjecting the same to holding for the specified time in the specific temperature region of 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, the slab is subjected to holding for 10 minutes or more in the temperature region of 1,150- 950 deg.C in the cooling process in succession to melting and solidifying, whereby harmful deposits are made harmless. Hot rolling is performed after this. Thereby, the slab surface cracking at the hot rolling may be effectively suppressed.
JP53156667A 1978-12-19 1978-12-19 Method for suppressing surface cracking of steel billet during hot rolling Expired JPS5852442B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53156667A JPS5852442B2 (en) 1978-12-19 1978-12-19 Method for suppressing surface cracking of steel billet during hot rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53156667A JPS5852442B2 (en) 1978-12-19 1978-12-19 Method for suppressing surface cracking of steel billet during hot rolling

Publications (2)

Publication Number Publication Date
JPS5584201A true JPS5584201A (en) 1980-06-25
JPS5852442B2 JPS5852442B2 (en) 1983-11-22

Family

ID=15632662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53156667A Expired JPS5852442B2 (en) 1978-12-19 1978-12-19 Method for suppressing surface cracking of steel billet during hot rolling

Country Status (1)

Country Link
JP (1) JPS5852442B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62212001A (en) * 1986-03-13 1987-09-18 Sumitomo Metal Ind Ltd Hot rolling method for preventing surface cracking of ingot

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60218529A (en) * 1984-04-13 1985-11-01 Mitsubishi Electric Corp Combustion state detection device

Citations (4)

* 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
JPS52108319A (en) * 1976-03-10 1977-09-10 Nippon Steel Corp Production of high strength steel sheet
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
JPS5333919A (en) * 1976-09-10 1978-03-30 Nippon Steel Corp Production of cold rolled aluminum killed steel sheet with excellent deep drawability

Patent Citations (4)

* 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
JPS52108319A (en) * 1976-03-10 1977-09-10 Nippon Steel Corp Production of high strength steel sheet
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
JPS5333919A (en) * 1976-09-10 1978-03-30 Nippon Steel Corp Production of cold rolled aluminum killed steel sheet with excellent deep drawability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62212001A (en) * 1986-03-13 1987-09-18 Sumitomo Metal Ind Ltd Hot rolling method for preventing surface cracking of ingot

Also Published As

Publication number Publication date
JPS5852442B2 (en) 1983-11-22

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