KR20040046402A - 고규소 전기강판 제조방법 - Google Patents
고규소 전기강판 제조방법 Download PDFInfo
- Publication number
- KR20040046402A KR20040046402A KR1020020074329A KR20020074329A KR20040046402A KR 20040046402 A KR20040046402 A KR 20040046402A KR 1020020074329 A KR1020020074329 A KR 1020020074329A KR 20020074329 A KR20020074329 A KR 20020074329A KR 20040046402 A KR20040046402 A KR 20040046402A
- Authority
- KR
- South Korea
- Prior art keywords
- steel sheet
- coating
- amount
- electrical steel
- powder
- Prior art date
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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
- 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
- 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
- C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Treatment Of Metals (AREA)
- Soft Magnetic Materials (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
Description
구분 | 목표Si량(%) | Fe-Si분말중Si(%) | Fe-Si도포량(g/m2) | 발명식에 의한 Fe-Si 도포량(g/m2) | 소재Si량(%) | 판간풀림성 | 소재 |
비교예1 | 4.5 | 55 | 34 | 60 | 3.92 | 판붙음 | 무방향성강판 |
발명예1 | 60 | 4.48 | 양호 | ||||
비교예2 | 82 | 4.88 | 양호 | ||||
비교예3 | 6.5 | 55 | 101 | 136 | 5.72 | 부분 판붙음 | |
발명예2 | 136 | 6.51 | 양호 | ||||
비교예4 | 157 | 6.89 | 양호 | ||||
비교예5 | 4.5 | 45 | 53 | 81 | 4.11 | 부분 판붙음 | 방향성강판 |
발명예3 | 81 | 4.51 | 양호 | ||||
비교예6 | 104 | 4.81 | 양호 |
Claims (1)
- Si를 2.0~3.3중량% 범위로 함유하는 강판의 표면에,그 입도가 -325mesh이고 Si를 20~70중량% 함유하는 Fe-Si계 소성분말 100중량부와, 상기 Fe-Si계 소성분말기준으로 실리카가 그 고형분 기준으로 15~30중량부가 되도록 조성된 콜로이달 실리카용액을 포함하여 조성되는 피복제 조성물을 도포한후 건조시키는 단계; 그리고상기 건조된 강판을 20%이상의 수소함유 질소가스 분위기하에서 1050~1200℃온도범위로 확산소둔하는 단계;를 포함하고,상기 피복제 조성물을 강판에 도포시, 하기 관계식을 만족하도록 도포됨을 특징으로 하는 고규소 전기강판 제조방법(관계식 1)Y - 5 ≤ 도포량 ≤ Y + 5(관계식 2)Y(g/m2) = 7650t (x1 - x2)/(A - 14.4)여기서, t는 소재두께(mm), A는 Fe-Si계 분말중 Si량(%), x1은 소재의 목표 Si량(%), 그리고 x2는 소재의 초기 Si량(%)이다.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020074329A KR100946070B1 (ko) | 2002-11-27 | 2002-11-27 | 고규소 전기강판 제조방법 |
PCT/KR2003/002412 WO2004044251A1 (en) | 2002-11-11 | 2003-11-11 | Coating composition, and method for manufacturing high silicon electrical steel sheet using thereof |
JP2004551259A JP4484710B2 (ja) | 2002-11-11 | 2003-11-11 | 浸珪拡散被覆組成物及びこれを利用した高珪素電磁鋼板の製造方法 |
US10/519,227 US7435304B2 (en) | 2002-11-11 | 2003-11-11 | Coating composition, and method for manufacturing high silicon electrical steel sheet using thereof |
EP03811151A EP1560938B1 (en) | 2002-11-11 | 2003-11-11 | Coating composition, and method of manufacturing high silicon electrical steel sheet using said composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020074329A KR100946070B1 (ko) | 2002-11-27 | 2002-11-27 | 고규소 전기강판 제조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040046402A true KR20040046402A (ko) | 2004-06-05 |
KR100946070B1 KR100946070B1 (ko) | 2010-03-10 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020020074329A KR100946070B1 (ko) | 2002-11-11 | 2002-11-27 | 고규소 전기강판 제조방법 |
Country Status (1)
Country | Link |
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KR (1) | KR100946070B1 (ko) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6017064A (ja) * | 1983-07-08 | 1985-01-28 | Shogo Izumi | 鉄鋼表面にけい素拡散被覆又は窒化けい素被覆を形成する方法 |
JP2678850B2 (ja) * | 1992-01-13 | 1997-11-19 | 新日本製鐵株式会社 | 超低鉄損一方向性珪素鋼板の製造方法 |
JPH09249916A (ja) * | 1996-03-15 | 1997-09-22 | Kawasaki Steel Corp | 方向性けい素鋼板の製造方法及び焼鈍分離剤 |
EP1052043A3 (en) * | 1999-05-10 | 2002-04-10 | Daido Tokushuko Kabushiki Kaisha | Silicon steel plate and method for producing the same |
KR100900662B1 (ko) * | 2002-11-11 | 2009-06-01 | 주식회사 포스코 | 침규확산용 분말도포제 및 이를 이용한 고규소 방향성전기강판 제조방법 |
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- 2002-11-27 KR KR1020020074329A patent/KR100946070B1/ko active IP Right Grant
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KR100946070B1 (ko) | 2010-03-10 |
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