KR100360101B1 - 피막특성이 우수한 저온슬라브 가열방식의 방향성 전기강판 제조방법 - Google Patents
피막특성이 우수한 저온슬라브 가열방식의 방향성 전기강판 제조방법 Download PDFInfo
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- KR100360101B1 KR100360101B1 KR1019980057624A KR19980057624A KR100360101B1 KR 100360101 B1 KR100360101 B1 KR 100360101B1 KR 1019980057624 A KR1019980057624 A KR 1019980057624A KR 19980057624 A KR19980057624 A KR 19980057624A KR 100360101 B1 KR100360101 B1 KR 100360101B1
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- temperature
- annealing
- steel sheet
- electrical steel
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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
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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
- C21D8/1277—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
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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
Description
구분 | 총질소량(ppm) | 마무리소둔중1차 균열열처리조건 | 마무리소둔중2차 균열열처리조건 | 2차재결정 발생율 | 유리질 피막 외관 | 자속밀도 | 철손 | ||
온도(℃) | 시간(hr) | 온도(℃) | 시간(hr) | B10(Tesla) | W17/50(W/kg) | ||||
비교재1 | 40 | 650 | 15 | 1040 | 20 | 90% | 양호 | 1.78 | 1.71 |
발명재1 | 50 | 650 | 15 | 1040 | 20 | 100% | 양호 | 1.92 | 1.02 |
발명재2 | 80 | 650 | 15 | 1040 | 20 | 100% | 양호 | 1.92 | 1.02 |
발명재3 | 120 | 650 | 15 | 1040 | 20 | 100% | 양호 | 1.94 | 1.00 |
비교재2 | 150 | 650 | 15 | 1040 | 20 | 100% | 유리질피막불량(질소방출구결함) | 1.93 | 1.05 |
비교재3 | 250 | 500 | 15 | 1040 | 20 | 95% | 양호 | 1.82 | 1.48 |
비교재4 | 250 | 750 | 15 | 1040 | 20 | 100% | 유리질피막불량(소지금속노츨) | 1.92 | 1.91 |
비교재5 | 250 | 650 | 4 | 1040 | 18 | 95% | 양호 | 1.81 | 1.55 |
비교재6 | 250 | 650 | 15 | 미실시 | 70% | 양호 | 1.65 | 2.12 | |
비교재7 | 250 | 650 | 15 | 1020 | 20 | 100% | 양호 | 1.87 | 1.29 |
비교재8 | 250 | 650 | 15 | 1070 | 20 | 90% | 양호 | 1.79 | 1.69 |
비교재9 | 250 | 650 | 15 | 1060 | 4 | 100% | 양호 | 1.86 | 1.31 |
Claims (2)
- 규소강슬라브를 1100~1250℃의 온도에서 가열한 후 열간압연, 예비소둔, 1회의 냉간압연에 의해 냉연판을 만든 다음, 이 냉연판을 탈탄소둔하고, 소둔분리제를 도포한 다음, 마무리고온소둔하는 공정을 포함하는 방향성전기강판의 제조방법에 있어서,상기 규소강슬라브는 중량%로, C:0.02∼0.08%, Si:2.90∼3.30%, Mn:0.15∼0.30%, S:0.006%이하, 산가용성 Al:0.010∼0.040%, N:0.006%이하를 함유하고;상기 탈탄소둔에서는 700~950℃의 온도에서 총질소량이 50~120ppm이 되도록 침질을 하고;상기 마무리소둔은, 550∼700℃의 온도에서 5∼20시간 1차 균열열처리하고 1030∼1060℃ 온도에서 5∼15시간 2차 균열열처리하는 것을 포함하여 이루어지는 피막특성이 우수한 저온 슬라브 가열방식의 방향성 전기강판 제조방법.
- 제 1항에 있어서, 상기 침질은 암모니아+수소+질소의 분위기에서 행함을 특징으로 하는 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019980057624A KR100360101B1 (ko) | 1998-12-23 | 1998-12-23 | 피막특성이 우수한 저온슬라브 가열방식의 방향성 전기강판 제조방법 |
Applications Claiming Priority (1)
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KR1019980057624A KR100360101B1 (ko) | 1998-12-23 | 1998-12-23 | 피막특성이 우수한 저온슬라브 가열방식의 방향성 전기강판 제조방법 |
Publications (2)
Publication Number | Publication Date |
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KR20000041670A KR20000041670A (ko) | 2000-07-15 |
KR100360101B1 true KR100360101B1 (ko) | 2002-12-18 |
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KR1019980057624A KR100360101B1 (ko) | 1998-12-23 | 1998-12-23 | 피막특성이 우수한 저온슬라브 가열방식의 방향성 전기강판 제조방법 |
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KR (1) | KR100360101B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100841771B1 (ko) | 2006-12-28 | 2008-06-27 | 주식회사 포스코 | 자성이 우수한 방향성 전기강판의 제조방법 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100514790B1 (ko) * | 2000-12-19 | 2005-09-14 | 주식회사 포스코 | 자성이 우수한 저온 슬라브가열방식의 방향성 전기강판의제조방법 |
CN116380599B (zh) * | 2023-06-06 | 2023-08-11 | 江苏省沙钢钢铁研究院有限公司 | 一种大尺寸非金属夹杂物的制备方法及其应用 |
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- 1998-12-23 KR KR1019980057624A patent/KR100360101B1/ko not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100841771B1 (ko) | 2006-12-28 | 2008-06-27 | 주식회사 포스코 | 자성이 우수한 방향성 전기강판의 제조방법 |
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KR20000041670A (ko) | 2000-07-15 |
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