JPS5530381A - Reducing method for crop loss at blooming - Google Patents

Reducing method for crop loss at blooming

Info

Publication number
JPS5530381A
JPS5530381A JP10453678A JP10453678A JPS5530381A JP S5530381 A JPS5530381 A JP S5530381A JP 10453678 A JP10453678 A JP 10453678A JP 10453678 A JP10453678 A JP 10453678A JP S5530381 A JPS5530381 A JP S5530381A
Authority
JP
Japan
Prior art keywords
steel ingot
protuberance
blooming
reducing
crop loss
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
JP10453678A
Other languages
Japanese (ja)
Other versions
JPS6024721B2 (en
Inventor
Minoru Matsuzaki
Tsugio Murakami
Hideaki Yoshimura
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 Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP10453678A priority Critical patent/JPS6024721B2/en
Publication of JPS5530381A publication Critical patent/JPS5530381A/en
Publication of JPS6024721B2 publication Critical patent/JPS6024721B2/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

Landscapes

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

Abstract

PURPOSE:To reduce the crop loss at blooming the steel ingot, and to improve the yield of shearing work, by forming a protuberance at a couple of planes facing to one end of the head and bottom of the steel ingot using the reducing roll at rolling the steel ingot, and hereafter, by reducing the steel ingot from the inverse direction. CONSTITUTION:At early stage of the rolling work for the steel ingot 7, the T-type protuberance 9 with length of extension DELTAL=200-300mm and height of protuberance DELTAH being specified by 0.25DELTAL<=DELTAH<=DELTAL, is formed by the reducing roll 8 in at least a couple of planes facing to at least one end of the head and bottom of the steel ingot 7; hereafter, the reduction is applied to the ingot 7 by the reducing roll 8 from the inverse direction in order to eliminate the protuberance 9.
JP10453678A 1978-08-28 1978-08-28 Method for reducing clotupulos in blooming rolling Expired JPS6024721B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10453678A JPS6024721B2 (en) 1978-08-28 1978-08-28 Method for reducing clotupulos in blooming rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10453678A JPS6024721B2 (en) 1978-08-28 1978-08-28 Method for reducing clotupulos in blooming rolling

Publications (2)

Publication Number Publication Date
JPS5530381A true JPS5530381A (en) 1980-03-04
JPS6024721B2 JPS6024721B2 (en) 1985-06-14

Family

ID=14383205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10453678A Expired JPS6024721B2 (en) 1978-08-28 1978-08-28 Method for reducing clotupulos in blooming rolling

Country Status (1)

Country Link
JP (1) JPS6024721B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6225001U (en) * 1985-07-31 1987-02-16
WO2001094050A2 (en) * 2000-06-07 2001-12-13 Alcoa Inc. Method and apparatus for reducing crop losses during slab and ingot rolling

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6317020U (en) * 1986-07-17 1988-02-04

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6225001U (en) * 1985-07-31 1987-02-16
WO2001094050A2 (en) * 2000-06-07 2001-12-13 Alcoa Inc. Method and apparatus for reducing crop losses during slab and ingot rolling
WO2001094050A3 (en) * 2000-06-07 2002-07-18 Alcoa Inc Method and apparatus for reducing crop losses during slab and ingot rolling

Also Published As

Publication number Publication date
JPS6024721B2 (en) 1985-06-14

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