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KR970043184A - Manufacturing method of high magnetic flux density oriented electrical steel sheet - Google Patents

Manufacturing method of high magnetic flux density oriented electrical steel sheet Download PDF

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Publication number
KR970043184A
KR970043184A KR1019950061442A KR19950061442A KR970043184A KR 970043184 A KR970043184 A KR 970043184A KR 1019950061442 A KR1019950061442 A KR 1019950061442A KR 19950061442 A KR19950061442 A KR 19950061442A KR 970043184 A KR970043184 A KR 970043184A
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KR
South Korea
Prior art keywords
steel sheet
magnetic flux
flux density
oriented electrical
electrical steel
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Application number
KR1019950061442A
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Korean (ko)
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KR100347597B1 (en
Inventor
한찬희
박성권
우종수
김재관
Original Assignee
김만제
포항종합제철 주식회사
신창식
재단법인 산업과학기술연구소
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Priority to KR1019950061442A priority Critical patent/KR100347597B1/en
Publication of KR970043184A publication Critical patent/KR970043184A/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
    • C21D8/1255—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 with diffusion of elements, e.g. decarburising, nitriding
    • 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
    • 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
    • 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
    • C21D8/1272—Final recrystallisation annealing
    • 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)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

본 발명은 자성이 우수한 고자속밀도 방향성 전기강판의 경제적인 제조방법에 관한 것이다. 본 발명의 고자속밀도 방향성 전기강판의 제조방법은 중량%로 Si:2.0-4.5%, C:0.001-0.075%, Sol-Al:0.010-0.080%, Mn:0.030-0.100%, S:0.002-0.015%, N:0.0050-0.0150%, 잔부 Fe 및 기타 불가피한 불순물을 포함하는 슬라브를 열간압연하여, 예비소둔한 후 80-95%의 냉간압연으로 최종두께 0.30-0.10mm로 냉간압연하고 탈탄소둔, 고온소둔을 실시하는 고자속밀도 방향성전기강판의 제조공정에 있어서 상기 열간압연은 1000-1250℃에서 행하여지며, 상기 냉간압연된 강판은 500℃이상 1000℃이하의 온도영역에서 1초이상 300초이내로 질화성이고 탈탄성인 분위기하에서 가열하여 질화의 탈탄 및 재결정 소둔을 동시에 실시한 다음 소둔분리제를 도포하여 2차결정소둔하는 것을 특징으로 한다.The present invention relates to an economical manufacturing method of high magnetic flux density oriented electrical steel sheet excellent in magnetic properties. The manufacturing method of the high magnetic flux density oriented electrical steel sheet of the present invention is Si: 2.0-4.5%, C: 0.001-0.075%, Sol-Al: 0.010-0.080%, Mn: 0.030-0.100%, S: 0.002- Hot-rolled slab containing 0.015%, N: 0.0050-0.0150%, balance Fe and other unavoidable impurities, pre-annealed, cold-rolled to final thickness 0.30-0.10mm with 80-95% cold rolling, decarbonized annealing, In the manufacturing process of high magnetic flux density oriented electrical steel sheet subjected to high temperature annealing, the hot rolling is performed at 1000-1250 ° C., and the cold rolled steel sheet is in the range of 500 ° C. to 1000 ° C. for less than 1 second to 300 seconds. In a nitriding and decarburizing atmosphere, denitrification and recrystallization annealing of nitriding are performed at the same time, followed by application of an annealing separator to secondary crystal annealing.

Description

고자속밀도 방향성 전기강판의 제조방법Manufacturing method of high magnetic flux density oriented electrical steel sheet

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

Claims (1)

중량%로 Si:2.0-4.5%, C:0.001-0.075%, Sol-Al:0.010-0.080%, Mn:0.030-0.100%, S:0.002-0.015%, N:0.0050-0.0150%, 잔부 Fe 및 기타 불가피한 불순물을 포함하는 슬라브를 열간압연하여, 예비소둔한 후 80-95%의 냉간압연으로 최종두께 0.30-0.10mm로 냉간압연하고, 탈탄소둔, 고온소둔을 실시하는 고자속밀도 방향성전기강판의 제조공정에 있어서, 상기 열간압연은 1000-1250℃에서 행하여지며, 상기 냉간압연된 강판은 500℃이상 1000℃이하의 온도영역에서 1초이상 300초이내로 질화성이고 탈탄성인 분위기하에서 가열하여 질화의 탈탄 및 재결정 소둔을 동시에 실시한 다음 소둔분리제를 도포하여 2차재결정소둔하는 것을 특징으로 하는 자성이 우수한 고자속밀도 방향성 전기강판 제조 방법.% By weight Si: 2.0-4.5%, C: 0.001-0.075%, Sol-Al: 0.010-0.080%, Mn: 0.030-0.100%, S: 0.002-0.015%, N: 0.0050-0.0150%, balance Fe and Slabs containing other unavoidable impurities are hot-rolled, pre-annealed, cold-rolled to a final thickness of 0.30-0.10 mm with 80-95% cold rolling, decarbonized annealing, and hot-annealed. In the manufacturing process, the hot rolling is performed at 1000-1250 ° C., and the cold rolled steel sheet is heated in a nitriding and de-elastic atmosphere in a temperature range of 500 ° C. or more and 1000 ° C. or less for 1 second or more to 300 seconds. A high magnetic flux density oriented electrical steel sheet manufacturing method characterized in that the secondary recrystallization annealing by simultaneously performing decarburization and recrystallization annealing.
KR1019950061442A 1995-12-28 1995-12-28 Manufacturing method of high magnetic flux density oriented electrical steel sheet Expired - Fee Related KR100347597B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950061442A KR100347597B1 (en) 1995-12-28 1995-12-28 Manufacturing method of high magnetic flux density oriented electrical steel sheet

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Application Number Priority Date Filing Date Title
KR1019950061442A KR100347597B1 (en) 1995-12-28 1995-12-28 Manufacturing method of high magnetic flux density oriented electrical steel sheet

Publications (2)

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KR970043184A true KR970043184A (en) 1997-07-26
KR100347597B1 KR100347597B1 (en) 2002-11-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10907231B2 (en) 2015-12-22 2021-02-02 Posco Grain-oriented electrical steel sheet and manufacturing method therefor
CN117363861A (en) * 2023-11-27 2024-01-09 马鞍山钢铁股份有限公司 A kind of non-oriented silicon steel with excellent electromagnetic properties in high temperature environment and its manufacturing method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100817168B1 (en) 2006-12-27 2008-03-27 주식회사 포스코 Manufacturing method of oriented electrical steel sheet with excellent magnetic properties
KR101351958B1 (en) 2011-11-21 2014-01-16 주식회사 포스코 Method for manufacturing grain oriented electrical steel sheets with extremely low core loss and high flux density and manufactured grain oriented electrical steel sheets by that method
KR20250093716A (en) * 2023-12-15 2025-06-25 주식회사 포스코 Grain oriented electrical steel sheet and manufacturing method of the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0277525A (en) * 1988-04-25 1990-03-16 Nippon Steel Corp Method for manufacturing unidirectional electrical steel sheet with excellent magnetic properties and film properties
JP2771633B2 (en) * 1989-10-05 1998-07-02 新日本製鐵株式会社 Continuous decarburization annealing equipment for grain-oriented electrical steel sheets
JPH0578743A (en) * 1991-09-26 1993-03-30 Nippon Steel Corp Manufacture of grain-oriented electrical steel sheet excellent in magnetic property and coating film property

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10907231B2 (en) 2015-12-22 2021-02-02 Posco Grain-oriented electrical steel sheet and manufacturing method therefor
CN117363861A (en) * 2023-11-27 2024-01-09 马鞍山钢铁股份有限公司 A kind of non-oriented silicon steel with excellent electromagnetic properties in high temperature environment and its manufacturing method

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Publication number Publication date
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