JPS59209403A - Manufacture of shape steel - Google Patents

Manufacture of shape steel

Info

Publication number
JPS59209403A
JPS59209403A JP8377083A JP8377083A JPS59209403A JP S59209403 A JPS59209403 A JP S59209403A JP 8377083 A JP8377083 A JP 8377083A JP 8377083 A JP8377083 A JP 8377083A JP S59209403 A JPS59209403 A JP S59209403A
Authority
JP
Japan
Prior art keywords
rolling
rolls
blank
flange
numbered
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
JP8377083A
Other languages
Japanese (ja)
Inventor
Hiroyuki Hasegawa
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 JP8377083A priority Critical patent/JPS59209403A/en
Publication of JPS59209403A publication Critical patent/JPS59209403A/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
    • B21B1/08Metal-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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/088H- or I-sections

Abstract

PURPOSE:To reduce the roll-seizing flaws of a shape steel by using the odd-numbered passes of the 1st intermediate rolling consisting of rough, edge, and universal rollings for performing the web rolling of a blank to shorten its bellows and using the 1st pass of the 2nd intermediate rolling for biting the blank from its flange part. CONSTITUTION:In rolling a H or I-beam from a beam blank 3, the odd-numbered pass of roughing rolls 4 are used for rolling the web of blank 3 and the even- numbered passes are used for rolling its flange part, to prevent the spreading of bellows. The odd-numbered pass by the edging rolls 5 of the 1st intermediate rolling 7 is used for strengthening the web, and the even-numbered pass by the edging rolls 6 is used for intensifying the rolling reduction of the flange part by vertical rolls 6a, 6b to make also the bellows short. In the 2nd intermediate rolling, the flange part is well bitten at the odd-numbered pass by universal rolls. Thus, by making the bellows short and biting the blank 3 by rolls from its flange part, the generation of roll seizing flaws due to roll eccentricity is prevented and the yield is improved.
JP8377083A 1983-05-13 1983-05-13 Manufacture of shape steel Pending JPS59209403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8377083A JPS59209403A (en) 1983-05-13 1983-05-13 Manufacture of shape steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8377083A JPS59209403A (en) 1983-05-13 1983-05-13 Manufacture of shape steel

Publications (1)

Publication Number Publication Date
JPS59209403A true JPS59209403A (en) 1984-11-28

Family

ID=13811831

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8377083A Pending JPS59209403A (en) 1983-05-13 1983-05-13 Manufacture of shape steel

Country Status (1)

Country Link
JP (1) JPS59209403A (en)

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