CA2020933A1 - Method of hot rolling continuously cast grain-oriented electrical steel slab - Google Patents

Method of hot rolling continuously cast grain-oriented electrical steel slab

Info

Publication number
CA2020933A1
CA2020933A1 CA2020933A CA2020933A CA2020933A1 CA 2020933 A1 CA2020933 A1 CA 2020933A1 CA 2020933 A CA2020933 A CA 2020933A CA 2020933 A CA2020933 A CA 2020933A CA 2020933 A1 CA2020933 A1 CA 2020933A1
Authority
CA
Canada
Prior art keywords
oriented electrical
slab
electrical steel
continuously cast
hot 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.)
Granted
Application number
CA2020933A
Other languages
French (fr)
Other versions
CA2020933C (en
Inventor
Kishio Mochinaga
Kiyokazu Ichimura
Shinji Shibao
Syuji Kitahara
Shiro Ichikawa
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
Individual
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
Priority claimed from JP15102690A external-priority patent/JPH0713268B2/en
Application filed by Individual filed Critical Individual
Publication of CA2020933A1 publication Critical patent/CA2020933A1/en
Application granted granted Critical
Publication of CA2020933C publication Critical patent/CA2020933C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
    • C21D8/1222—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular fabrication or treatment of ingot or slab

Abstract

ABSTRACT OF THE DISCLOSURE

A continuously cast slab of grain-oriented electrical steel is heated, subjected to heavy-reduction edge rolling at such amount not less than 60 mm as is required for matching with the width of a hot-rolled coil to be produced therefrom, whereafter the dogbones formed in the slab by the heavy-reduction edge rolling are eliminated by horizontal rolling to obtain a flat slab. The flat slab is then heated to a high temperature and hot rolled.
Optionally, the edges of the slab can be heated prior to the finish rolling step of the hot rolling process. The method enables production of grain-oriented electrical sheet with high productivity.
CA002020933A 1989-07-12 1990-07-11 Method of hot rolling continuously cast grain-oriented electrical steel slab Expired - Lifetime CA2020933C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1-179,659 1989-07-12
JP17965989 1989-07-12
JP2-151,026 1990-06-08
JP15102690A JPH0713268B2 (en) 1989-07-12 1990-06-08 Hot Rolling Method for Continuously Cast Unidirectional Electrical Steel Slab

Publications (2)

Publication Number Publication Date
CA2020933A1 true CA2020933A1 (en) 1991-01-13
CA2020933C CA2020933C (en) 1993-12-21

Family

ID=26480423

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002020933A Expired - Lifetime CA2020933C (en) 1989-07-12 1990-07-11 Method of hot rolling continuously cast grain-oriented electrical steel slab

Country Status (3)

Country Link
EP (1) EP0411356B1 (en)
CA (1) CA2020933C (en)
DE (1) DE69023291T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4311150C1 (en) * 1993-04-05 1993-12-23 Thyssen Stahl Ag Preheating concast slab in two stages prior to hot rolling - to prevent edge cracking in final strip
DE102008029581A1 (en) 2007-07-21 2009-01-22 Sms Demag Ag Method and apparatus for making strips of silicon or multi-phase steel
AT507475B1 (en) * 2008-10-17 2010-08-15 Siemens Vai Metals Tech Gmbh METHOD AND DEVICE FOR PRODUCING HOT-ROLLED SILICON STEEL ROLLING MATERIAL
ITRM20110528A1 (en) 2011-10-05 2013-04-06 Ct Sviluppo Materiali Spa PROCEDURE FOR THE PRODUCTION OF MAGNETIC SHEET WITH ORIENTED GRAIN AND HIGH DEGREE OF COLD REDUCTION.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790798A (en) * 1971-11-04 1973-02-15 Armco Steel Corp Manufacturing process of cube-on-edge orientation silicon iron from cast slabs
US4204891A (en) * 1978-11-27 1980-05-27 Nippon Steel Corporation Method for preventing the edge crack in a grain oriented silicon steel sheet produced from a continuously cast steel slab
JPS5942561B2 (en) * 1980-02-13 1984-10-16 新日本製鐵株式会社 Hot rolling method
JPS60145318A (en) * 1984-01-09 1985-07-31 Kawasaki Steel Corp Heating method of grain-oriented silicon steel slab
JPH0699751B2 (en) * 1985-12-03 1994-12-07 川崎製鉄株式会社 Method for producing grain-oriented silicon steel sheet having good electromagnetic characteristics

Also Published As

Publication number Publication date
DE69023291T2 (en) 1996-04-04
EP0411356A3 (en) 1992-09-30
DE69023291D1 (en) 1995-12-07
CA2020933C (en) 1993-12-21
EP0411356B1 (en) 1995-11-02
EP0411356A2 (en) 1991-02-06

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry