KR950018539A - Manufacturing method of non-oriented electrical steel sheet with excellent magnetic properties - Google Patents

Manufacturing method of non-oriented electrical steel sheet with excellent magnetic properties Download PDF

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Publication number
KR950018539A
KR950018539A KR1019930029154A KR930029154A KR950018539A KR 950018539 A KR950018539 A KR 950018539A KR 1019930029154 A KR1019930029154 A KR 1019930029154A KR 930029154 A KR930029154 A KR 930029154A KR 950018539 A KR950018539 A KR 950018539A
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KR
South Korea
Prior art keywords
annealing
manufacturing
steel sheet
electrical steel
oriented electrical
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Application number
KR1019930029154A
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Korean (ko)
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KR960006027B1 (en
Inventor
노병훈
배병근
Original Assignee
조말수
포항종합제철 주식회사
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Priority to KR1019930029154A priority Critical patent/KR960006027B1/en
Publication of KR950018539A publication Critical patent/KR950018539A/en
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Publication of KR960006027B1 publication Critical patent/KR960006027B1/en

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    • 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
    • C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
    • C21D8/1261—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest following 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

본 발명은 모터 또는 중, 소형 변압기등의 철심재료로 사용되는 무방향성 전기강판의 제조방법에 관한 것으로써, 열연판 예비소둔시 가열속도 및 소둔온도를 조절하므로써, 철손이 보다 낮고, 자속밀도가 보다 높은 무방향성 전기 강판을 제조하고자 하는데, 그 목적이 있다.The present invention relates to a method for manufacturing non-oriented electrical steel sheet used in iron core materials such as motors, medium and small transformers, and by adjusting the heating rate and annealing temperature during pre-annealing of the hot rolled sheet, the iron loss is lower, and the magnetic flux density is higher. To produce a higher non-oriented electrical steel sheet, the purpose is.

본 발명은 무방향성 전기강판 제조용 강 슬라브를 1050-1250℃로 재가열한 후, 열간암연, 열연판 소둔, 산세, 냉간압연 또는 중간소둔을 포함하는 2회 냉각압연후 최종 소둔하여 무방향성 전기강판을 제조하는 방법에 있어서, 상기 열연판 소둔시 소둔온도가 800-1100℃이고, 그리고 600-1000℃의 온도구간에서 가열속도가 1-10℃/초인 것을 특징으로 하는 자기적 특성이 우수한 무방향성 전기강판의 제조방법을 그 요지로 한다.The present invention, after reheating the steel slab for manufacturing non-oriented electrical steel sheet to 1050-1250 ℃, the final annealing after two times cold rolling including hot rolling, hot rolled sheet annealing, pickling, cold rolling or intermediate annealing to produce a non-oriented electrical steel sheet In the manufacturing method, the annealing temperature of the hot rolled sheet annealing temperature is 800-1100 ℃, the heating rate is 1-10 ℃ / sec in the temperature range of 600-1000 ℃ excellent magnetic properties excellent magnetic properties The manufacturing method of a steel plate is made into the summary.

Description

자기적 특성이 우수한 무방향성 전기강판의 제조방법Manufacturing method of non-oriented electrical steel sheet with excellent magnetic properties

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (1)

중량%로, C:0.015% 이하, Si:3.5% 이하, Mn:0.5% 이하, P:0.10% 이하, S:0.01% 이하, N:0.007% 이하, O:0.005% 이하, Al:1.0% 이하, 잔부 Fe 및 기타 불가피한 불순물로 조성되는 강 슬라비를 1050-1250℃로 재가열한 후 열간압연, 열연판소둔, 산세냉간압연 혹은 중간 소둔을 포함하는 2회 냉간압연 후 최종소둔하여 무방향성 전기강판을 제조하는 방법에 있어서, 상기 압연판 소둔시 소둔온도가 800-1100℃이고, 그리고 600-1000℃의 온도구간에서의 가열속도가 1-10℃/초인 것을 특징으로 하는 자기 특성이 우수한 방향성 전기강판의 제조방법.By weight%, C: 0.015% or less, Si: 3.5% or less, Mn: 0.5% or less, P: 0.10% or less, S: 0.01% or less, N: 0.007% or less, O: 0.005% or less, Al: 1.0% Hereinafter, the steel slab composed of the balance Fe and other unavoidable impurities is reheated to 1050-1250 ° C, followed by two cold rollings including hot rolling, hot rolling annealing, pickling cold rolling or intermediate annealing, followed by final annealing. In the method of manufacturing a steel sheet, the annealing temperature at the time of annealing the rolled plate is 800-1100 ℃, and the heating rate in the temperature range of 600-1000 ℃ is 1-10 ℃ / sec. Method of manufacturing electrical steel sheet. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930029154A 1993-12-22 1993-12-22 Process for production of non-oriented electrical steel sheet having excellent magnetic properties KR960006027B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930029154A KR960006027B1 (en) 1993-12-22 1993-12-22 Process for production of non-oriented electrical steel sheet having excellent magnetic properties

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930029154A KR960006027B1 (en) 1993-12-22 1993-12-22 Process for production of non-oriented electrical steel sheet having excellent magnetic properties

Publications (2)

Publication Number Publication Date
KR950018539A true KR950018539A (en) 1995-07-22
KR960006027B1 KR960006027B1 (en) 1996-05-08

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KR1019930029154A KR960006027B1 (en) 1993-12-22 1993-12-22 Process for production of non-oriented electrical steel sheet having excellent magnetic properties

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020016025A (en) * 2000-08-24 2002-03-04 이구택 A method for manufacturing non-grain oriented electric steel sheet with superior magnetic property
KR100544531B1 (en) * 2000-12-20 2006-01-24 주식회사 포스코 A method for manufacturing non-oriented electrical steel sheet with excellent magnetic flux density
KR100825560B1 (en) * 2001-12-03 2008-04-25 주식회사 포스코 Method for Manufacturing Nonoriented Electrical Steel Sheet
KR20180072229A (en) 2016-12-21 2018-06-29 주식회사 포스코 Method for manufacturing electrical steel sheet having high silicon and excellent cold rolling property

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020016025A (en) * 2000-08-24 2002-03-04 이구택 A method for manufacturing non-grain oriented electric steel sheet with superior magnetic property
KR100544531B1 (en) * 2000-12-20 2006-01-24 주식회사 포스코 A method for manufacturing non-oriented electrical steel sheet with excellent magnetic flux density
KR100825560B1 (en) * 2001-12-03 2008-04-25 주식회사 포스코 Method for Manufacturing Nonoriented Electrical Steel Sheet
KR20180072229A (en) 2016-12-21 2018-06-29 주식회사 포스코 Method for manufacturing electrical steel sheet having high silicon and excellent cold rolling property

Also Published As

Publication number Publication date
KR960006027B1 (en) 1996-05-08

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