JPS55139101A - Method and apparatus for strong width-reducing rolling - Google Patents

Method and apparatus for strong width-reducing rolling

Info

Publication number
JPS55139101A
JPS55139101A JP4828779A JP4828779A JPS55139101A JP S55139101 A JPS55139101 A JP S55139101A JP 4828779 A JP4828779 A JP 4828779A JP 4828779 A JP4828779 A JP 4828779A JP S55139101 A JPS55139101 A JP S55139101A
Authority
JP
Japan
Prior art keywords
roll
slab
vertical roll
rolling
circumferential speed
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
JP4828779A
Other languages
Japanese (ja)
Other versions
JPS6015401B2 (en
Inventor
Masaaki Tarui
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP4828779A priority Critical patent/JPS6015401B2/en
Publication of JPS55139101A publication Critical patent/JPS55139101A/en
Publication of JPS6015401B2 publication Critical patent/JPS6015401B2/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
    • B21B1/02—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, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/026—Rolling
    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B21B1/224—Edge rolling of flat products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/12—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process axes being arranged in different planes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2263/00—Shape of product
    • B21B2263/10—Lateral spread defects
    • B21B2263/12—Dog bone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2263/00—Shape of product
    • B21B2263/20—End shape; fish tail; tongue

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To restrict the thickness reduction at the middle part of the rolled material, and to improve the yield, by employing the slab possessing a convex section, and by installing new horizontal roll before and behind the vertical roll for carrying out the widfh-reducing rolling. CONSTITUTION:When the tip of slab 3 is to be rolled, if the circumferential speed of broadside rolling rolls 4, 5, is made quicker than the circumferential speed of the vertical roll 1, the middle part advances quicker than the edge part of the slab, and the fish tail of the slab edge is reduced. Besides, an elongation is caused in the lateral middle part, so that the generation of dog-bone is prevented. Next, when the tail end of the slab 3 is to be rolled, if the circumferential speed of broadside rolling rolls 4, 5, is made slower than the circumferential speed o the vertical roll 1, a tension is generated between the broadside rolling roll 5 and the vertical roll 1, and an elongation toward the lateral roll 5 middle part is caused, so that the fish tail is reduced. During the normal rolling pass, the circumferential speeds of broadside rolling rolls 4, 5, and the vertical roll 1 are made indentical. In case of the tandem edging mill, the boradside rolling roll 5 installed only behind the vertical roll 1 can serve satisfactorily.
JP4828779A 1979-04-19 1979-04-19 Heavy width reduction rolling method and equipment Expired JPS6015401B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4828779A JPS6015401B2 (en) 1979-04-19 1979-04-19 Heavy width reduction rolling method and equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4828779A JPS6015401B2 (en) 1979-04-19 1979-04-19 Heavy width reduction rolling method and equipment

Publications (2)

Publication Number Publication Date
JPS55139101A true JPS55139101A (en) 1980-10-30
JPS6015401B2 JPS6015401B2 (en) 1985-04-19

Family

ID=12799213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4828779A Expired JPS6015401B2 (en) 1979-04-19 1979-04-19 Heavy width reduction rolling method and equipment

Country Status (1)

Country Link
JP (1) JPS6015401B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555921A (en) * 1982-03-02 1985-12-03 Sumitomo Metal Industries, Ltd. Method and apparatus for controlling width and thickness of strip
EP2818259A4 (en) * 2012-02-21 2016-01-06 Baoshan Iron & Steel 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555921A (en) * 1982-03-02 1985-12-03 Sumitomo Metal Industries, Ltd. Method and apparatus for controlling width and thickness of strip
EP2818259A4 (en) * 2012-02-21 2016-01-06 Baoshan Iron & Steel 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

Also Published As

Publication number Publication date
JPS6015401B2 (en) 1985-04-19

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