JPS57187101A - Rolling method for reducing edge drop in hot rolling - Google Patents

Rolling method for reducing edge drop in hot rolling

Info

Publication number
JPS57187101A
JPS57187101A JP7064381A JP7064381A JPS57187101A JP S57187101 A JPS57187101 A JP S57187101A JP 7064381 A JP7064381 A JP 7064381A JP 7064381 A JP7064381 A JP 7064381A JP S57187101 A JPS57187101 A JP S57187101A
Authority
JP
Japan
Prior art keywords
thickness
rolled
end parts
parts
plate
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
JP7064381A
Other languages
Japanese (ja)
Inventor
Katsu Okado
Shogo Tomita
Toshifumi Yabuuchi
Yutaka Shibayama
Yoshinosuke Noma
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 Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP7064381A priority Critical patent/JPS57187101A/en
Publication of JPS57187101A publication Critical patent/JPS57187101A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/22Metal-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

Abstract

PURPOSE:To reduce edge drops and center crowns by increasing the plate thicknesses in both broadside end parts of a material to be rolled in accordance with specific conditions on the upper stream than the final stand of hot finishing stages then screwing down both end parts gradually. CONSTITUTION:Plate thickness increasing parts are so formed as to increase the thicknesses in the broadside thickness parts of a material to be rolled in the plate end parts on the upper stream than the final stand of hot finishing stages, and this material is flat rolled in the subsequent passes. Here, the thickness increasing in the plate end parts is so limited as to satisfy the equationI(H: the thickness in the central part of the material to be rolled, B: the width of the material to be rolled, the difference between the thickness in the end parts and the thickness in the central parts, that is, the height of the thickness increased part alpha, W: the width of the thickness increased part alpha, S: WXh, that is, the sectional area of the thickness increased part alpha). According to this method, not only edge drops are reduced effectively, but also center crowns are reduced.
JP7064381A 1981-05-13 1981-05-13 Rolling method for reducing edge drop in hot rolling Pending JPS57187101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7064381A JPS57187101A (en) 1981-05-13 1981-05-13 Rolling method for reducing edge drop in hot rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7064381A JPS57187101A (en) 1981-05-13 1981-05-13 Rolling method for reducing edge drop in hot rolling

Publications (1)

Publication Number Publication Date
JPS57187101A true JPS57187101A (en) 1982-11-17

Family

ID=13437526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7064381A Pending JPS57187101A (en) 1981-05-13 1981-05-13 Rolling method for reducing edge drop in hot rolling

Country Status (1)

Country Link
JP (1) JPS57187101A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186003A (en) * 1984-10-02 1986-05-01 Nippon Steel Corp Rolling method of strip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186003A (en) * 1984-10-02 1986-05-01 Nippon Steel Corp Rolling method of strip

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