KR100946143B1 - 적정 분위기가스 제어에 의한 Glassless전기강판 제조방법 - Google Patents
적정 분위기가스 제어에 의한 Glassless전기강판 제조방법 Download PDFInfo
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- KR100946143B1 KR100946143B1 KR1020020056552A KR20020056552A KR100946143B1 KR 100946143 B1 KR100946143 B1 KR 100946143B1 KR 1020020056552 A KR1020020056552 A KR 1020020056552A KR 20020056552 A KR20020056552 A KR 20020056552A KR 100946143 B1 KR100946143 B1 KR 100946143B1
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- Prior art keywords
- annealing
- steel sheet
- rolled
- cold
- manufacturing
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Classifications
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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
- C21D8/1216—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
- C21D8/1216—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
- C21D8/1233—Cold 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
- C21D8/1244—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
- C21D8/1283—Application of a separating or insulating coating
-
- 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
Description
강종 | 조성성분(중량%) | ||||||
C | Si | Mn | P | S | Al | N | |
a | 0.053 | 3.10 | 0.14 | 0.0190 | 0.0095 | 0.030 | 0.0091 |
b | 0.054 | 3.15 | 0.13 | 0.0189 | 0.0098 | 0.028 | 0.0085 |
제조조건 | 측정결과 | 강종 | ||||||
권취온도 (℃) | 탈탄소둔온도(℃) | 분위기가스투입비(%) | D/P(℃) | W17/50 (W/kg) | B10,Tesla | Glassless정도(%) | ||
발명예1 | 620 | 885 | 1.15 | 42 | 1.41 | 1.82 | 90 | a |
발명예2 | 590 | 890 | 1.05 | 40 | 1.44 | 1.83 | 95 | a |
발명예3 | 600 | 895 | 1.25 | 43 | 1.45 | 1.82 | 89 | b |
비교예1 | 630 | 875 | 1.32 | 41 | 1.47 | 1.82 | 12 | a |
비교예2 | 600 | 890 | 0.95 | 42 | 1.49 | 1.79 | 17 | b |
비교예3 | 610 | 893 | 1.03 | 43 | 1.51 | 1.80 | 20 | b |
제조조건(℃) | 측정 결과 | 종합평가 | |||||
권취온도 | 탈탄소둔온도 | 이슬점(D/P) | 잔류C(ppm) | 산화층량 (ppm) | Glassless정도(%) | ||
비교예4 | 620 | 885 | 30~34 | 30 | 360 | 44 | 불량 |
비교예5 | 590 | 890 | 35~39 | 25 | 400 | 48 | 불량 |
발명예4 | 600 | 895 | 40~42 | 11 | 500 | 95 | 양호 |
발명예5 | 610 | 898 | 43~44 | 12 | 510 | 94 | 양호 |
비교예6 | 630 | 875 | 45~50 | 10 | 550 | 35 | 불량 |
탈탄소둔조건 | Glassless정도(%) | ||||
수소비(%) | 질소비(%) | 분위기가스투입비(%) | D/P(℃) | ||
발명예6 | 30 | 70 | 1.07 | 41 | 95 |
발명예7 | 45 | 55 | 1.13 | 44 | 92 |
비교예7 | 60 | 40 | 1.23 | 42 | 89 |
Claims (2)
- 중량%로, C: 0.04~0.07%, Si: 2.5~4.0%, Mn: 0.5~0.25%, P: 0.03% 이하(0은 제외), S: 0.02% 이하(0은 제외), Al: 0.1% 이하(0은 제외), N: 0.01% 이하(0은 제외), 잔부 Fe 및 기타 불가피하게 함유되는 불순물로 조성되는 강슬라브를 재가열한 후 열간압연하고, 열연판소둔한후 냉간압연하며, 이어, 상기 냉간압연된 냉연강판을 탈탄소둔한후 소둔분리제 도포후 고온소둔하는 방향성 전기강판 제조방법에 있어서,상기 냉연강판을 그 이슬점이 40~44℃인 소둔로내에서, 하기 관계식으로 정의되는 분위기가스투입비가 1.05~1.25%가 되도록 제어된 수소와 질소의 혼합가스분위기하에서 800~950℃에서 탈탄소둔시키는 것을 특징으로 하는 Glassless 방향성 전기강판의 제조방법.[관계식 1]분위기가스 투입비(%) = 시간당 투입되는 분위기가스량(㎥)/로전체 부피(㎥)*100
- 제 1항에 있어서, 상기 혼합가스는 부피분율(%)로, 수소는 30~60% 및 질소는 70~40%로 조성되어 있음을 특징으로 하는 Glassless 방향성 전기강판의 제조방법.
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KR1020020056552A KR100946143B1 (ko) | 2002-09-17 | 2002-09-17 | 적정 분위기가스 제어에 의한 Glassless전기강판 제조방법 |
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KR1020020056552A KR100946143B1 (ko) | 2002-09-17 | 2002-09-17 | 적정 분위기가스 제어에 의한 Glassless전기강판 제조방법 |
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KR20040026042A KR20040026042A (ko) | 2004-03-27 |
KR100946143B1 true KR100946143B1 (ko) | 2010-03-10 |
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6148529A (ja) * | 1984-08-16 | 1986-03-10 | Kawasaki Steel Corp | 方向性電磁鋼板の脱炭焼鈍方法 |
KR920012479A (ko) * | 1990-12-28 | 1992-07-27 | 정명식 | 자기적성질 및 글라스피막특성이 우수한 방향성 전기강판의 제조방법 |
JPH06145998A (ja) * | 1992-11-12 | 1994-05-27 | Nippon Steel Corp | 磁気特性が優れ、鉄心加工性が著しく優れた高磁束密度方向性電磁鋼板及びその製造法 |
JPH07150250A (ja) * | 1993-12-02 | 1995-06-13 | Nippon Steel Corp | 方向性珪素鋼板の製造方法 |
JPH09143562A (ja) * | 1995-11-27 | 1997-06-03 | Kawasaki Steel Corp | 磁気特性及び鋼板端部形状に優れるAl含有方向性電磁鋼板の製造方法 |
KR19980016413A (ko) * | 1996-08-28 | 1998-06-05 | 김만제 | 자성과 생산성이 우수한 방향성 전기강판의 제조방법 |
KR19990015264A (ko) * | 1997-08-04 | 1999-03-05 | 이구택 | 슬라브 저온가열에 의한 고자속밀도 일방향성 전기강판의 제조방법 |
KR20010060645A (ko) * | 1999-12-27 | 2001-07-07 | 이구택 | 저온 슬라브가열 고자속밀도 방향성 전기강판의 제조방법 |
-
2002
- 2002-09-17 KR KR1020020056552A patent/KR100946143B1/ko active IP Right Grant
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6148529A (ja) * | 1984-08-16 | 1986-03-10 | Kawasaki Steel Corp | 方向性電磁鋼板の脱炭焼鈍方法 |
KR920012479A (ko) * | 1990-12-28 | 1992-07-27 | 정명식 | 자기적성질 및 글라스피막특성이 우수한 방향성 전기강판의 제조방법 |
JPH06145998A (ja) * | 1992-11-12 | 1994-05-27 | Nippon Steel Corp | 磁気特性が優れ、鉄心加工性が著しく優れた高磁束密度方向性電磁鋼板及びその製造法 |
JPH07150250A (ja) * | 1993-12-02 | 1995-06-13 | Nippon Steel Corp | 方向性珪素鋼板の製造方法 |
JPH09143562A (ja) * | 1995-11-27 | 1997-06-03 | Kawasaki Steel Corp | 磁気特性及び鋼板端部形状に優れるAl含有方向性電磁鋼板の製造方法 |
KR19980016413A (ko) * | 1996-08-28 | 1998-06-05 | 김만제 | 자성과 생산성이 우수한 방향성 전기강판의 제조방법 |
KR19990015264A (ko) * | 1997-08-04 | 1999-03-05 | 이구택 | 슬라브 저온가열에 의한 고자속밀도 일방향성 전기강판의 제조방법 |
KR20010060645A (ko) * | 1999-12-27 | 2001-07-07 | 이구택 | 저온 슬라브가열 고자속밀도 방향성 전기강판의 제조방법 |
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