JPS55153602A - Width-reducing rolling method - Google Patents

Width-reducing rolling method

Info

Publication number
JPS55153602A
JPS55153602A JP6234879A JP6234879A JPS55153602A JP S55153602 A JPS55153602 A JP S55153602A JP 6234879 A JP6234879 A JP 6234879A JP 6234879 A JP6234879 A JP 6234879A JP S55153602 A JPS55153602 A JP S55153602A
Authority
JP
Japan
Prior art keywords
slab
roll
vertical
width
reducing rolling
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
JP6234879A
Other languages
Japanese (ja)
Inventor
Nobuhiro Tazoe
Original Assignee
Ishikawajima Harima Heavy Ind Co 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 Ishikawajima Harima Heavy Ind Co Ltd filed Critical Ishikawajima Harima Heavy Ind Co Ltd
Priority to JP6234879A priority Critical patent/JPS55153602A/en
Publication of JPS55153602A publication Critical patent/JPS55153602A/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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B2263/00Shape of product
    • B21B2263/20End shape; fish tail; tongue

Abstract

PURPOSE:To reduce the growth of fish tail, and to improve the yield, by smashing slab's four corners by the vertical roll before beginning the width-reducing rolling, and then by carrying out the width-reducing rolling. CONSTITUTION:The tip of the slab 1 is thrust against the vertical roll 3, and the roll 3 is turned round to smash the corners of the tip by a specified amount. Next, the vertical roll 3 is moved outside, and the roll gap L is widened to more than the slab's breadth; and the slab 1 is sent to the front of the vertical mill, and the vertical roll 3 is moved toward the center in order to set the roll gap L at the required condition; and the rear end of the slab 1 is thrust against the vertical roll 3 in order to smash the corner of the rear end by a required amount. Next, the vertical roll 3 is moved outside, the roll gap L is enlarged, and the slab 1 is sent behind the vertical mill; and the roll gap L is narrowed to the required condition, and then, the width-reducing rolling is carried out. The fish tail 2 of the slab 1 after undergoing the rolling becomes small.
JP6234879A 1979-05-21 1979-05-21 Width-reducing rolling method Pending JPS55153602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6234879A JPS55153602A (en) 1979-05-21 1979-05-21 Width-reducing rolling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6234879A JPS55153602A (en) 1979-05-21 1979-05-21 Width-reducing rolling method

Publications (1)

Publication Number Publication Date
JPS55153602A true JPS55153602A (en) 1980-11-29

Family

ID=13197523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6234879A Pending JPS55153602A (en) 1979-05-21 1979-05-21 Width-reducing rolling method

Country Status (1)

Country Link
JP (1) JPS55153602A (en)

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
JPS6284802A (en) * 1985-10-08 1987-04-18 Ishikawajima Harima Heavy Ind Co Ltd Cross rolling down for slab
JPS62137101A (en) * 1985-12-11 1987-06-20 Ishikawajima Harima Heavy Ind Co Ltd Cross rolling reduction pressing method
CN103252347A (en) * 2012-02-21 2013-08-21 宝山钢铁股份有限公司 Continuous cast slab head and tail shape pre-controlling method capable of reducing hot-rolled intermediate slab head and tail cutting quantities

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5393158A (en) * 1977-01-27 1978-08-15 Kawasaki Steel Co Fish tail growth preventive at blooming

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5393158A (en) * 1977-01-27 1978-08-15 Kawasaki Steel Co Fish tail growth preventive at blooming

Cited By (7)

* 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
JPS6284802A (en) * 1985-10-08 1987-04-18 Ishikawajima Harima Heavy Ind Co Ltd Cross rolling down for slab
JPS62137101A (en) * 1985-12-11 1987-06-20 Ishikawajima Harima Heavy Ind Co Ltd Cross rolling reduction pressing method
CN103252347A (en) * 2012-02-21 2013-08-21 宝山钢铁股份有限公司 Continuous cast slab head and tail shape pre-controlling method capable of reducing hot-rolled intermediate slab head and tail cutting quantities
WO2013123682A1 (en) * 2012-02-21 2013-08-29 宝山钢铁股份有限公司 Pre-control method of head and tail shapes of continuous casting slab for reducing the removed amount from the head and tail of hot-rolled intermediate slab
JP2014521517A (en) * 2012-02-21 2014-08-28 宝山鋼鉄股▲分▼有限公司 A method for pre-controlling the shape of the head and tail of a continuously cast slab to reduce the amount of cutting of the head and tail of a hot rolled intermediate slab
US9914167B2 (en) 2012-02-21 2018-03-13 Baoshan Iron & Steer Co., Ltd. Method of pre-controlling shapes of continuous-casting slab head and tail for reducing head and tail cut amount of hot rolling intermediate slab

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