JPS57139402A - Production of blank shape steel for shape steel - Google Patents

Production of blank shape steel for shape steel

Info

Publication number
JPS57139402A
JPS57139402A JP2420081A JP2420081A JPS57139402A JP S57139402 A JPS57139402 A JP S57139402A JP 2420081 A JP2420081 A JP 2420081A JP 2420081 A JP2420081 A JP 2420081A JP S57139402 A JPS57139402 A JP S57139402A
Authority
JP
Japan
Prior art keywords
shape steel
parts
length
steel
blank
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
JP2420081A
Other languages
Japanese (ja)
Inventor
Mitsuharu Masuda
Hiroshi Kubo
Yasuhide Yoshii
Minoru Baba
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 JP2420081A priority Critical patent/JPS57139402A/en
Publication of JPS57139402A publication Critical patent/JPS57139402A/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
    • B21B1/02Metal-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 heavy work, e.g. ingots, slabs, blooms billets, in which the cross-sectional form is unimportant Rolling combined with forging or pressing
    • B21B1/026Rolling

Abstract

PURPOSE:To improve the productivity of a blank shape steel by screwing-down both end parts of a flat slab in its width direction with horizontal flat rolls, and making the length in the longitudinal direction of the formed bulging parts properly longer than the length in the longitudinal direction in the central part of the flat slab. CONSTITUTION:A flat slab is rolled of the broadside end parts of the slab by means of only the flat rolls 3 having no calibers, whereby a blank shape steel 5 having bulging parts 4 is produced. At this time, the fishtail A of the steel 5 is formed to proper length. the width F of the flange parts of the steel 5 and the length A of the fishtail are both affected by rolling reduction and therefore, in the first stage, the width and thickness direction of the blank material are both screwed down. Then, in the second stage, the material is screwed down only in the width direction, whereby the bulging parts 4 are formed in both end parts in the width direction. Thereby, the blank shape steel 5 is produced without requiring blooming grooved rolls.
JP2420081A 1981-02-23 1981-02-23 Production of blank shape steel for shape steel Pending JPS57139402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2420081A JPS57139402A (en) 1981-02-23 1981-02-23 Production of blank shape steel for shape steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2420081A JPS57139402A (en) 1981-02-23 1981-02-23 Production of blank shape steel for shape steel

Publications (1)

Publication Number Publication Date
JPS57139402A true JPS57139402A (en) 1982-08-28

Family

ID=12131672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2420081A Pending JPS57139402A (en) 1981-02-23 1981-02-23 Production of blank shape steel for shape steel

Country Status (1)

Country Link
JP (1) JPS57139402A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117861A (en) * 1976-03-31 1977-10-03 Nippon Steel Corp Method of rolling hhshaped metal material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117861A (en) * 1976-03-31 1977-10-03 Nippon Steel Corp Method of rolling hhshaped metal material

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