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JPS57154301A - Rolling method for hot rolled steel plate of less scale flaw - Google Patents

Rolling method for hot rolled steel plate of less scale flaw

Info

Publication number
JPS57154301A
JPS57154301A JP4080481A JP4080481A JPS57154301A JP S57154301 A JPS57154301 A JP S57154301A JP 4080481 A JP4080481 A JP 4080481A JP 4080481 A JP4080481 A JP 4080481A JP S57154301 A JPS57154301 A JP S57154301A
Authority
JP
Japan
Prior art keywords
steel plate
hot rolled
mill
temp
generation
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
JP4080481A
Other languages
Japanese (ja)
Other versions
JPS6048241B2 (en
Inventor
Hidemitsu Takahashi
Masamichi Usa
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 JP4080481A priority Critical patent/JPS6048241B2/en
Publication of JPS57154301A publication Critical patent/JPS57154301A/en
Publication of JPS6048241B2 publication Critical patent/JPS6048241B2/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
    • 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
    • B21B45/02—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 lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • 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)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To reduce the reproduction of secondary scale produced just before finish rolling mills by forcibly cooling and rolling the part of a strip higher in temp. than the critical temp. for generation of scale flaws just before the 1st finishing stand or between the 1st and 2nd finishing stands or both. CONSTITUTION:A steel plate 2 heated in a heating furnace 1 is hot rolled by using a rolling mill train consisting of roughing mills 5a-5e, a descaling device 7a and plural finishing mills 6(F1-F6). At this time, the predetermined central part in the width direction of the plate 2 where the temp. is higher than the critical temp. for generation of scale flaws (for example, around 1,065 deg.C) is forcibly cooled between the device 7a and the mill F1 or between the mill F1 and the mill F2 or both thereof. While the generation of the secondary scale is suppressed by this force cooling, the steel plate is finish rolled 6, whereby the hot rolled steel plate of less scale flaws is obtd.
JP4080481A 1981-03-20 1981-03-20 Rolling method for hot-rolled steel sheets with few scale defects Expired JPS6048241B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4080481A JPS6048241B2 (en) 1981-03-20 1981-03-20 Rolling method for hot-rolled steel sheets with few scale defects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4080481A JPS6048241B2 (en) 1981-03-20 1981-03-20 Rolling method for hot-rolled steel sheets with few scale defects

Publications (2)

Publication Number Publication Date
JPS57154301A true JPS57154301A (en) 1982-09-24
JPS6048241B2 JPS6048241B2 (en) 1985-10-26

Family

ID=12590819

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4080481A Expired JPS6048241B2 (en) 1981-03-20 1981-03-20 Rolling method for hot-rolled steel sheets with few scale defects

Country Status (1)

Country Link
JP (1) JPS6048241B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0920928A2 (en) * 1997-12-05 1999-06-09 Mitsubishi Heavy Industries, Ltd. Method and system for suppressing formation of scale defects during hot finish rolling
EP0920929A2 (en) * 1997-12-05 1999-06-09 Mitsubishi Heavy Industries, Ltd. Method and System for suppressing surface oxide film during hot finish rolling
CN102764760A (en) * 2012-07-03 2012-11-07 南京钢铁股份有限公司 Method for manufacturing high surface quality hot-rolled steel plate
CN103071675A (en) * 2012-12-20 2013-05-01 济钢集团有限公司 Rolling system for medium and thick steel plate in thin gauge
CN104399747A (en) * 2014-11-17 2015-03-11 中国第一重型机械股份公司 Steckel mill production line

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62263510A (en) * 1986-05-09 1987-11-16 Tokyo Electron Ltd Storing device for conveying goods

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0920928A2 (en) * 1997-12-05 1999-06-09 Mitsubishi Heavy Industries, Ltd. Method and system for suppressing formation of scale defects during hot finish rolling
EP0920929A2 (en) * 1997-12-05 1999-06-09 Mitsubishi Heavy Industries, Ltd. Method and System for suppressing surface oxide film during hot finish rolling
US6067836A (en) * 1997-12-05 2000-05-30 Mitsubishi Heavy Industries, Ltd. Method and system for suppressing formation of scale defects during hot finish rolling
EP0920928A3 (en) * 1997-12-05 2000-09-20 Mitsubishi Heavy Industries, Ltd. Method and system for suppressing formation of scale defects during hot finish rolling
EP0920929A3 (en) * 1997-12-05 2000-09-20 Mitsubishi Heavy Industries, Ltd. Method and System for suppressing surface oxide film during hot finish rolling
CN102764760A (en) * 2012-07-03 2012-11-07 南京钢铁股份有限公司 Method for manufacturing high surface quality hot-rolled steel plate
CN103071675A (en) * 2012-12-20 2013-05-01 济钢集团有限公司 Rolling system for medium and thick steel plate in thin gauge
CN104399747A (en) * 2014-11-17 2015-03-11 中国第一重型机械股份公司 Steckel mill production line

Also Published As

Publication number Publication date
JPS6048241B2 (en) 1985-10-26

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