JPS5550901A - Rolling method for steel shape - Google Patents

Rolling method for steel shape

Info

Publication number
JPS5550901A
JPS5550901A JP11511878A JP11511878A JPS5550901A JP S5550901 A JPS5550901 A JP S5550901A JP 11511878 A JP11511878 A JP 11511878A JP 11511878 A JP11511878 A JP 11511878A JP S5550901 A JPS5550901 A JP S5550901A
Authority
JP
Japan
Prior art keywords
rolls
rolling
arrow
tail end
unrolled portion
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
JP11511878A
Other languages
Japanese (ja)
Other versions
JPS5837043B2 (en
Inventor
Toshiji Irie
Keiji Okamoto
Takeshi Hirasawa
Shinichi Nagahashi
Kiyotaka Morioka
Akira Miyake
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 JP53115118A priority Critical patent/JPS5837043B2/en
Publication of JPS5550901A publication Critical patent/JPS5550901A/en
Publication of JPS5837043B2 publication Critical patent/JPS5837043B2/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
    • 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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/088—H- or I-sections

Abstract

PURPOSE:To restrict the generation of fin and flange type over filling at the edge, by releasing the draft after rolling the material from the biting end to the midway in order to pass the unrolled portion idly in the same direction, and then, by applying the rolling to the unrolled portion taking the tail end as the biting end. CONSTITUTION:The roll gap of upper and lower reducing rolls 4, 5, of the breakdown mill is set at a specified value, and the material 14 is rolled from the front end 14a in the direction of the arrow A. When the rolling work is proceeded to the midway of total length of material, the rolls 4, 5, are released from the rolling work, and the material 14 is sent on idly in the direction of the arrow A; after the tail end 14b of material 14 passes by the rolls 4, 5, the roll gap of rolls 4, 5, is again set at the initial specified value. At the next rolling pass, the rotation of rolls 4, 5, is reversed, and the tail end 14b of the material 14 is bitten by rolls 4, 5, and the material 14 is passed in the direction of the arrow B and hereby the unrolled portion is rolled.
JP53115118A 1978-09-21 1978-09-21 Rolling method of section steel Expired JPS5837043B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53115118A JPS5837043B2 (en) 1978-09-21 1978-09-21 Rolling method of section steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53115118A JPS5837043B2 (en) 1978-09-21 1978-09-21 Rolling method of section steel

Publications (2)

Publication Number Publication Date
JPS5550901A true JPS5550901A (en) 1980-04-14
JPS5837043B2 JPS5837043B2 (en) 1983-08-13

Family

ID=14654685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53115118A Expired JPS5837043B2 (en) 1978-09-21 1978-09-21 Rolling method of section steel

Country Status (1)

Country Link
JP (1) JPS5837043B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57149002A (en) * 1981-03-09 1982-09-14 Nippon Kokan Kk <Nkk> Production of shape steel
JPS57149001A (en) * 1981-03-09 1982-09-14 Nippon Kokan Kk <Nkk> Production of shape steel
US4387586A (en) * 1979-10-31 1983-06-14 Hitachi, Ltd. Method of widthwise rolling of rolled material and apparatus therefor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195367U (en) * 1983-06-14 1984-12-25 松下電器産業株式会社 Light wick type oil burning device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5135383A (en) * 1974-09-20 1976-03-25 Nippon Kokan Kk Choonpatanshoki no geetojidosetsuteihoho

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5135383A (en) * 1974-09-20 1976-03-25 Nippon Kokan Kk Choonpatanshoki no geetojidosetsuteihoho

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387586A (en) * 1979-10-31 1983-06-14 Hitachi, Ltd. Method of widthwise rolling of rolled material and apparatus therefor
JPS57149002A (en) * 1981-03-09 1982-09-14 Nippon Kokan Kk <Nkk> Production of shape steel
JPS57149001A (en) * 1981-03-09 1982-09-14 Nippon Kokan Kk <Nkk> Production of shape steel
JPS6215281B2 (en) * 1981-03-09 1987-04-07 Nippon Kokan Kk

Also Published As

Publication number Publication date
JPS5837043B2 (en) 1983-08-13

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