JPS57193222A - Scale removing method of steel plate - Google Patents

Scale removing method of steel plate

Info

Publication number
JPS57193222A
JPS57193222A JP7834781A JP7834781A JPS57193222A JP S57193222 A JPS57193222 A JP S57193222A JP 7834781 A JP7834781 A JP 7834781A JP 7834781 A JP7834781 A JP 7834781A JP S57193222 A JPS57193222 A JP S57193222A
Authority
JP
Japan
Prior art keywords
descaling
descaling process
steel plate
ended
starting
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
JP7834781A
Other languages
Japanese (ja)
Other versions
JPS6239044B2 (en
Inventor
Motomu Kimura
Tetsuo Naotori
Masahiko Morita
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP7834781A priority Critical patent/JPS57193222A/en
Publication of JPS57193222A publication Critical patent/JPS57193222A/en
Publication of JPS6239044B2 publication Critical patent/JPS6239044B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

PURPOSE:To prevent generation of a defect on the surface due to biting-in of remaining scale, by controlling an elapsed time required for starting the first descaling, so as to satisfy a specific expression, in the secondary descaling process after the primary descaling process has ended. CONSTITUTION:In the course of hot rolling of a steel plate, the primary descaling process by heating oxidation of blank material slab, and the secondary descaling process of scale which has been generated in the course of its subsequent rolling are executed gy jetting highly pressurized water whose jetting surface pressure is >=100kg/cm<2>. In this case, an elapsed time (t) required for starting the first descaling in the secondary descaling process after the primary descaling process has ended, or an elapsed time (t) required for starting the next descaling after optional descaling in the secondary descaling process has ended is controlled so as to satisfy the inequality. In the inequality, T, A, B and TC denote a surface temperature ( deg.C) of a steel plate immediately before descaling, a constant =-0.01 (sec, deg<-2>), a constant =145 (sec) and a constant =930( deg.C), respectively.
JP7834781A 1981-05-23 1981-05-23 Scale removing method of steel plate Granted JPS57193222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7834781A JPS57193222A (en) 1981-05-23 1981-05-23 Scale removing method of steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7834781A JPS57193222A (en) 1981-05-23 1981-05-23 Scale removing method of steel plate

Publications (2)

Publication Number Publication Date
JPS57193222A true JPS57193222A (en) 1982-11-27
JPS6239044B2 JPS6239044B2 (en) 1987-08-20

Family

ID=13659449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7834781A Granted JPS57193222A (en) 1981-05-23 1981-05-23 Scale removing method of steel plate

Country Status (1)

Country Link
JP (1) JPS57193222A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014094391A (en) * 2012-11-09 2014-05-22 Jfe Steel Corp Thick steel plate production method with excellent surface quality

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54162631A (en) * 1978-06-14 1979-12-24 Nippon Kokan Kk <Nkk> Descaling method for secondary scale of hot rolled steel strip

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54162631A (en) * 1978-06-14 1979-12-24 Nippon Kokan Kk <Nkk> Descaling method for secondary scale of hot rolled steel strip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014094391A (en) * 2012-11-09 2014-05-22 Jfe Steel Corp Thick steel plate production method with excellent surface quality

Also Published As

Publication number Publication date
JPS6239044B2 (en) 1987-08-20

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