JPS5435852A - Direct or indirect hot rolling method - Google Patents

Direct or indirect hot rolling method

Info

Publication number
JPS5435852A
JPS5435852A JP10306977A JP10306977A JPS5435852A JP S5435852 A JPS5435852 A JP S5435852A JP 10306977 A JP10306977 A JP 10306977A JP 10306977 A JP10306977 A JP 10306977A JP S5435852 A JPS5435852 A JP S5435852A
Authority
JP
Japan
Prior art keywords
hot rolling
direct
rolling method
depth
defect
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
JP10306977A
Other languages
Japanese (ja)
Other versions
JPS5915730B2 (en
Inventor
Masaru Fukuyama
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 JP52103069A priority Critical patent/JPS5915730B2/en
Publication of JPS5435852A publication Critical patent/JPS5435852A/en
Publication of JPS5915730B2 publication Critical patent/JPS5915730B2/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
    • B21B1/46—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0085—Joining ends of material to continuous strip, bar or sheet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Metal Rolling (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

PURPOSE:To remove useless maintenance time and loss of iron, by detecting max. depth of defect of a hot slab by an induction heater and an optical scanner, and by feeding the slab having defect of depth not larger than limit defect depth to a hot rolling mill.
JP52103069A 1977-08-26 1977-08-26 Method for determining the necessity of surface treatment of hot steel billet in indirect or direct hot rolling method Expired JPS5915730B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52103069A JPS5915730B2 (en) 1977-08-26 1977-08-26 Method for determining the necessity of surface treatment of hot steel billet in indirect or direct hot rolling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52103069A JPS5915730B2 (en) 1977-08-26 1977-08-26 Method for determining the necessity of surface treatment of hot steel billet in indirect or direct hot rolling method

Publications (2)

Publication Number Publication Date
JPS5435852A true JPS5435852A (en) 1979-03-16
JPS5915730B2 JPS5915730B2 (en) 1984-04-11

Family

ID=14344360

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52103069A Expired JPS5915730B2 (en) 1977-08-26 1977-08-26 Method for determining the necessity of surface treatment of hot steel billet in indirect or direct hot rolling method

Country Status (1)

Country Link
JP (1) JPS5915730B2 (en)

Also Published As

Publication number Publication date
JPS5915730B2 (en) 1984-04-11

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