JPS55133801A - Slab width-reducing rolling method - Google Patents

Slab width-reducing rolling method

Info

Publication number
JPS55133801A
JPS55133801A JP3986979A JP3986979A JPS55133801A JP S55133801 A JPS55133801 A JP S55133801A JP 3986979 A JP3986979 A JP 3986979A JP 3986979 A JP3986979 A JP 3986979A JP S55133801 A JPS55133801 A JP S55133801A
Authority
JP
Japan
Prior art keywords
slab
reducing
feeding
rollings
roll
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
JP3986979A
Other languages
Japanese (ja)
Other versions
JPS6011561B2 (en
Inventor
Norio Hirakawa
Shinichi Yoshima
Takayoshi Yagi
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 JP3986979A priority Critical patent/JPS6011561B2/ja
Publication of JPS55133801A publication Critical patent/JPS55133801A/en
Publication of JPS6011561B2 publication Critical patent/JPS6011561B2/ja
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
    • B21B1/02—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 heavy work, e.g. ingots, slabs, blooms billets, in which the cross-sectional form is unimportant Rolling combined with forging or pressing
    • B21B1/026—Rolling

Abstract

PURPOSE:To reduce generation of the crop loss, and to improve the rolling efficiency, by successively two or more times forcibly feeding each of front and tail ends of the slab with the following roll, in order to apply the width-reducing rollings to the slab to form it into a simple sectional shape. CONSTITUTION:At manufacturing the continuously cast slab or the slab bloomed from the ingot into the desired breadth size of the blank, the width-reducing rollings of two or more times corespondingly to number of mills are applied to one end in the rolling direction (arrowed mark) of the slab 1 by two or more arranged width- reducing mills 2, 2'..., while forcibly feeding the slab 1 with the following roll; after that, two or more times of reducing rollings are successively applied to another end while feeding with the following roll; hereby, the slab of a simple shape is manufactured. In order to impress the feeding force, the roll speed Vh of the mill 2 is made slower than the roll speed Vw of the following thickness reducing mill 3, and thus obtained feeding force 4 is impressed on the slab. According to this method, the crop loss is reduced as compared with the conventional method, and the rolling efficinecy is improved.
JP3986979A 1979-04-04 1979-04-04 Expired JPS6011561B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3986979A JPS6011561B2 (en) 1979-04-04 1979-04-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3986979A JPS6011561B2 (en) 1979-04-04 1979-04-04

Publications (2)

Publication Number Publication Date
JPS55133801A true JPS55133801A (en) 1980-10-18
JPS6011561B2 JPS6011561B2 (en) 1985-03-27

Family

ID=12564971

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3986979A Expired JPS6011561B2 (en) 1979-04-04 1979-04-04

Country Status (1)

Country Link
JP (1) JPS6011561B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101201A (en) * 1982-12-01 1984-06-11 Hitachi Ltd Method for reducing width of slab by press type

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61195670U (en) * 1985-05-29 1986-12-05
JPH0435577A (en) * 1990-05-31 1992-02-06 Fujitsu General Ltd Peak clip circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101201A (en) * 1982-12-01 1984-06-11 Hitachi Ltd Method for reducing width of slab by press type

Also Published As

Publication number Publication date
JPS6011561B2 (en) 1985-03-27

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