KR970010987A - Slab heating method of oriented electrical steel sheet to reduce edge crack - Google Patents

Slab heating method of oriented electrical steel sheet to reduce edge crack Download PDF

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Publication number
KR970010987A
KR970010987A KR1019950024867A KR19950024867A KR970010987A KR 970010987 A KR970010987 A KR 970010987A KR 1019950024867 A KR1019950024867 A KR 1019950024867A KR 19950024867 A KR19950024867 A KR 19950024867A KR 970010987 A KR970010987 A KR 970010987A
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KR
South Korea
Prior art keywords
steel sheet
oriented electrical
electrical steel
heating method
slab heating
Prior art date
Application number
KR1019950024867A
Other languages
Korean (ko)
Other versions
KR100340487B1 (en
Inventor
박성권
홍병득
Original Assignee
김종진
포항종합제철 주식회사
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.)
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Application filed by 김종진, 포항종합제철 주식회사 filed Critical 김종진
Priority to KR1019950024867A priority Critical patent/KR100340487B1/en
Publication of KR970010987A publication Critical patent/KR970010987A/en
Application granted granted Critical
Publication of KR100340487B1 publication Critical patent/KR100340487B1/en

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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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon

Abstract

본 발명은 이동빔(Walking Beam)형 가열로를 이용하여 방향성 전기강판을 제조시 에지크랙을 저감시키기 위한 강슬라브의 가열방법을 제공하고자 하는데, 그 목적이 있다.An object of the present invention is to provide a heating method of a steel slab for reducing edge cracks when manufacturing a grain-oriented electrical steel sheet using a moving beam type heating furnace.

상기 목적달성을 위한 본 발명은 이동빔형 가열로를 이용하여 통상의 방향성 전기강판을 제조하는 방법에 있어서, 상기 가열로의 분위기를 (H2+CH4+CO+CnHn)/O2의 부피비율이 0.95~1.2가 되도록 함을 특징으로하는 에지크랙 감소를 위한 방향성 전기강판의 슬라브 가열방법에 관한 것을 그 기술적 요지로 한다.The present invention for achieving the above object is a method of manufacturing a conventional grain-oriented electrical steel sheet using a moving beam type heating furnace, the atmosphere of the heating furnace in the volume ratio of (H 2 + CH 4 + CO + CnHn) / O 2 The technical gist of the slab heating method for a grain-oriented electrical steel sheet for reducing edge cracks, characterized in that the 0.95 ~ 1.2.

Description

에지 크랙 감소를 위한 방향성 전기강판의 슬라브 가열방법Slab heating method of oriented electrical steel sheet to reduce edge crack

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (1)

중량%로, C:0.04~0.08%이하, Si:2.9~3.3%, Mn:0.06~0.08%, S:0.02~0.03%를 함유하고 필요에 따라 Sol.-Al:0.02~0.37%, N:60~120ppm, 나머지는 Fe 및 불가피하게 함유되는 불순물로 조성되는 강슬라브를 이동빔(Walking Beam) 형 재가열로에서 1350~1430℃의 온도로 가열한 후 통상의 방법으로 열간압연하고, 예비소둔, 냉간압연, 탈탄소둔 및 고온순도를 거쳐 최종 절연코팅하여 방향성 전기강판을 제조하는 방법에 있어서, 강기 재가열로의 가열분위기를 (H2+CH4+CO+CnHn)/O2의 부피비가 0.95~1.2가 되도록 함을 특징으로 하는 에지크랙 감소를 위한 방향성 전기강판의 슬라브 가열방법.By weight%, C: 0.04 to 0.08% or less, Si: 2.9 to 3.3%, Mn: 0.06 to 0.08%, S: 0.02 to 0.03%, if necessary, Sol.-Al: 0.02 to 0.37%, N: 60 ~ 120ppm, the rest is made of Fe and inevitably contained impurities in the heating beam (Walking Beam) reheating furnace heated to a temperature of 1350 ~ 1430 ℃ and hot rolled in the usual way, pre-annealed, In the method of manufacturing a grain-oriented electrical steel sheet by cold-rolling, decarbonization annealing and final insulation coating through high temperature purity, the volumetric ratio of (H 2 + CH 4 + CO + CnHn) / O 2 in the heating atmosphere of the steel reheating furnace is 0.95 ~. Slab heating method of oriented electrical steel sheet for reducing the edge crack, characterized in that 1.2. ※ 참고 사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950024867A 1995-08-11 1995-08-11 Heating method of oriented electric steel slab for decreasing edge crack KR100340487B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950024867A KR100340487B1 (en) 1995-08-11 1995-08-11 Heating method of oriented electric steel slab for decreasing edge crack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950024867A KR100340487B1 (en) 1995-08-11 1995-08-11 Heating method of oriented electric steel slab for decreasing edge crack

Publications (2)

Publication Number Publication Date
KR970010987A true KR970010987A (en) 1997-03-27
KR100340487B1 KR100340487B1 (en) 2002-11-02

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Application Number Title Priority Date Filing Date
KR1019950024867A KR100340487B1 (en) 1995-08-11 1995-08-11 Heating method of oriented electric steel slab for decreasing edge crack

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100940716B1 (en) * 2002-12-24 2010-02-08 주식회사 포스코 Method for Heating Slab for Grain Oriented Electrical Steel Sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100940716B1 (en) * 2002-12-24 2010-02-08 주식회사 포스코 Method for Heating Slab for Grain Oriented Electrical Steel Sheet

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Publication number Publication date
KR100340487B1 (en) 2002-11-02

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