JPS5756101A - Reducing method for crop loss in blooming process - Google Patents

Reducing method for crop loss in blooming process

Info

Publication number
JPS5756101A
JPS5756101A JP12968780A JP12968780A JPS5756101A JP S5756101 A JPS5756101 A JP S5756101A JP 12968780 A JP12968780 A JP 12968780A JP 12968780 A JP12968780 A JP 12968780A JP S5756101 A JPS5756101 A JP S5756101A
Authority
JP
Japan
Prior art keywords
thickness
ingot
breadth
recesses
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
JP12968780A
Other languages
Japanese (ja)
Other versions
JPS59281B2 (en
Inventor
Minoru Matsuzaki
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 JP12968780A priority Critical patent/JPS59281B2/en
Publication of JPS5756101A publication Critical patent/JPS5756101A/en
Publication of JPS59281B2 publication Critical patent/JPS59281B2/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
    • 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 effectively reduce the crop loss, by forming a cave along each of thickness and breadth at a couple of opposite side planes of at least either one of top and bottom of an ingot, and then by applying a usual blooming process to the ingot. CONSTITUTION:The side planes 10A, 10B opposite across the thickness at the top and bottom of a blank material 6 to be bloomed are subjected to plural reversing rolling passes performed by horizontal rolls 18A, 18B; as a result, recesses 12A, 12B are formed. The length DELTAL of thus formed recess is made about 200-400mm.. Then, side planes 20A, 20B opposite across the breadth are subjected to plural rolling passes performed by vertical rolls 8A, 8B in order to form recesses 22A, 22B. In a thickness range wherein the shape of a side of the ingot 6 causes a double barreling as a result of a thickness reduction, the ratio of the breadth reduction to the thickness reduction is regulated to 0.40-0.65; in a thickness range wherein the shape of a side plane causes a single barreling, said ratio is adjusted to <=0.3. By applying a blooming process to thus prepared ingot by forming said recesses, the crop loss resulting from an overlap and a fishtail is remarkably reduced.
JP12968780A 1980-09-18 1980-09-18 Method for reducing clotupulos in blooming rolling Expired JPS59281B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12968780A JPS59281B2 (en) 1980-09-18 1980-09-18 Method for reducing clotupulos in blooming rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12968780A JPS59281B2 (en) 1980-09-18 1980-09-18 Method for reducing clotupulos in blooming rolling

Publications (2)

Publication Number Publication Date
JPS5756101A true JPS5756101A (en) 1982-04-03
JPS59281B2 JPS59281B2 (en) 1984-01-06

Family

ID=15015695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12968780A Expired JPS59281B2 (en) 1980-09-18 1980-09-18 Method for reducing clotupulos in blooming rolling

Country Status (1)

Country Link
JP (1) JPS59281B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8381385B2 (en) 2004-12-27 2013-02-26 Tri-Arrows Aluminum Inc. Shaped direct chill aluminum ingot
US8381384B2 (en) 2004-12-27 2013-02-26 Tri-Arrows Aluminum Inc. Shaped direct chill aluminum ingot

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6099789U (en) * 1983-12-14 1985-07-08 岩崎通信機株式会社 Connector fixing structure
DE3406741A1 (en) * 1984-02-24 1985-08-29 Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen ARRANGEMENT OF A CONNECTOR ON A MEASURING DEVICE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8381385B2 (en) 2004-12-27 2013-02-26 Tri-Arrows Aluminum Inc. Shaped direct chill aluminum ingot
US8381384B2 (en) 2004-12-27 2013-02-26 Tri-Arrows Aluminum Inc. Shaped direct chill aluminum ingot
US9023484B2 (en) 2004-12-27 2015-05-05 Tri-Arrows Aluminum Inc. Shaped direct chill aluminum ingot

Also Published As

Publication number Publication date
JPS59281B2 (en) 1984-01-06

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