JPS5633104A - Feeding method for cast slab to hot rolling pass - Google Patents

Feeding method for cast slab to hot rolling pass

Info

Publication number
JPS5633104A
JPS5633104A JP10659579A JP10659579A JPS5633104A JP S5633104 A JPS5633104 A JP S5633104A JP 10659579 A JP10659579 A JP 10659579A JP 10659579 A JP10659579 A JP 10659579A JP S5633104 A JPS5633104 A JP S5633104A
Authority
JP
Japan
Prior art keywords
slab
pass
hot
hot rolling
cooling
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.)
Pending
Application number
JP10659579A
Other languages
Japanese (ja)
Inventor
Toshio Yanai
Shigenori Tanaka
Kazuaki Ezaka
Shigeru Hayano
Masahiro Takeuchi
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 JP10659579A priority Critical patent/JPS5633104A/en
Publication of JPS5633104A publication Critical patent/JPS5633104A/en
Pending 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
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • 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
    • B21B1/46—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 metal immediately subsequent to continuous casting
    • B21B1/466—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 metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:To prevent the generation of the crack of the cast slab, by feeding the continuously cast hot slab to the hot rolling pass, after cooling the slab at a specified cooling rate and being subjected to the hot edging pass under a specified condition. CONSTITUTION:At continuously casting the molten steel, the slow cooling at the 1.0 deg.C/sec or less cooling rate is applied to the slab during the period ranging from the start of the casting work to the solidification/cooling point. Following to this, the slab is warmed at 950-1,300 deg.C for at least 10min in order to cause the transformation of the crack causing harmful precipitation so as to be harmless. Next, the warmed cast slab is subjected to the hot edging pass at the 5/sec or less strain rate and the 50mm./pass/one side or larger rolling reduction, and then, the slab is fed to the hot rolling pass. Hereby, the adjustment between the continuous casting pass and the hot rolling pass is maintained good, and the high productivity and the big energy saving ca be achieved.
JP10659579A 1979-08-23 1979-08-23 Feeding method for cast slab to hot rolling pass Pending JPS5633104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10659579A JPS5633104A (en) 1979-08-23 1979-08-23 Feeding method for cast slab to hot rolling pass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10659579A JPS5633104A (en) 1979-08-23 1979-08-23 Feeding method for cast slab to hot rolling pass

Publications (1)

Publication Number Publication Date
JPS5633104A true JPS5633104A (en) 1981-04-03

Family

ID=14437511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10659579A Pending JPS5633104A (en) 1979-08-23 1979-08-23 Feeding method for cast slab to hot rolling pass

Country Status (1)

Country Link
JP (1) JPS5633104A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58167064A (en) * 1982-03-26 1983-10-03 Nippon Kokan Kk <Nkk> Continuous steel casting method
EP0368333A3 (en) * 1988-11-11 1991-12-27 Hitachi, Ltd. Hot-rolling equipment and a method of hot-rolling a slab
JP2009024227A (en) * 2007-07-20 2009-02-05 Nippon Steel Corp Composite steel sheet having excellent formability and method for producing the same

Citations (1)

* 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

Patent Citations (1)

* 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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58167064A (en) * 1982-03-26 1983-10-03 Nippon Kokan Kk <Nkk> Continuous steel casting method
EP0368333A3 (en) * 1988-11-11 1991-12-27 Hitachi, Ltd. Hot-rolling equipment and a method of hot-rolling a slab
JP2009024227A (en) * 2007-07-20 2009-02-05 Nippon Steel Corp Composite steel sheet having excellent formability and method for producing the same

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