JP5479448B2 - 高電磁気性能の方向性珪素鋼の製造方法 - Google Patents
高電磁気性能の方向性珪素鋼の製造方法 Download PDFInfo
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- 229910000976 Electrical steel Inorganic materials 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000000137 annealing Methods 0.000 claims description 38
- 238000005098 hot rolling Methods 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 238000005097 cold rolling Methods 0.000 claims description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims description 15
- 239000001257 hydrogen Substances 0.000 claims description 15
- 238000005261 decarburization Methods 0.000 claims description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000009749 continuous casting Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- 238000009628 steelmaking Methods 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims 1
- 239000010949 copper Substances 0.000 description 21
- 229910052717 sulfur Inorganic materials 0.000 description 14
- 239000000047 product Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000011572 manganese Substances 0.000 description 12
- 238000001556 precipitation Methods 0.000 description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 8
- 239000003112 inhibitor Substances 0.000 description 8
- 239000011593 sulfur Substances 0.000 description 8
- 229910052748 manganese Inorganic materials 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005554 pickling Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
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- 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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- 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
- C21D1/26—Methods of 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
- C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
- C21D3/02—Extraction of non-metals
- C21D3/04—Decarburising
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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
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
-
- 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
-
- 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
- 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
- C21D8/1266—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 between cold rolling steps
-
- 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
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
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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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
- C21D8/0284—Application of a separating or insulating coating
-
- 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
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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)
- Soft Magnetic Materials (AREA)
Description
C: 0.020%〜0.050%
Si: 2.6%〜3.6%
S: 0.015%〜0.025%
Als:0.008%〜0.028%
N: 0.005%〜0.020%
Mn: 0.15%〜0.5%、且つ10≦Mn/S≦20
Cu: 0.3%〜1.2%、且つCu/Mn≧2
残部:Fe及び不可避な不純物(Alsは酸可溶性アルミニウムである。)である、高電磁気性能の方向性珪素鋼の製造方法によって実現される。
実施例1:
方向性珪素鋼スラブにおける硫黄含有量とマンガン含有量と銅含有量の違いによって数種類の配合に分けられる。各配合において、S、Mn、Cuの三つの成分以外、他の成分の重量百分率は、それぞれ、C:0.040%、Si:3.17%、Als:0.017%、N:0.01%と一定に保持され、S、Mn、Cuの三つの成分含有量が下記表1に示され、残部はFe及び不可避な不純物であった。その後、上記スラブは、1280℃の再加熱温度で加熱炉内に3時間保温され、厚さ2.5mmの熱間圧延板に熱間圧延され、熱間圧延において、プラニシングの圧延開始温度を1050〜1200℃とし、圧延終了温度を800℃以上とした。酸洗してから、一回目の冷間圧延を施し、厚さ0.65mmまで圧延された後、850℃で、湿潤の水素保護雰囲気中で中間脱炭焼鈍を施し、鋼板の炭素含有量を30ppm以下に低下させた。中間脱炭焼鈍してから、二回目の冷間圧延を施し、製品の厚さ0.30mmに圧延された。MgOを主成分とする分離剤を塗布し、巻取りしてから、雰囲気が100%水素、露点が−10℃、温度が1200℃の条件で20時間の高温焼鈍を施した。巻き戻してから、絶縁コーティングの塗布と伸長平坦化焼鈍を施して、得られた製品の磁気性能は表1のように示される(高磁気誘導の方向性珪素鋼の通常製品の磁気性能の参照標準は、磁気誘導度B8≧1.88Tで、鉄損P17/50≦1.30W/kgである。以下は同様である。)。
方向性珪素スラブの配合及び重量百分率は、C:0.032%、Si:3.2%、Als:0.012%、N:0.01%、S:0.016%、Mn:0.18%、Cu:0.42%であり、残部はFe及び不可避な不純物であった。スラブを、表2における異なる再加熱パターンで加熱炉内に保温してから、厚さ2.5mmの熱間圧延板に熱間圧延し、その熱間圧延プラニシングの圧延開始温度と圧延終了温度は表2の通りであった。酸洗してから、一回目の冷間圧延を施し、厚さ0.60mmまで圧延した後、850℃で、湿潤の水素保護雰囲気中で中間脱炭焼鈍を施し、鋼板の炭素含有量を30ppm以下に低下させた。中間脱炭焼鈍してから、二回目の冷間圧延を施し、製品の厚さ0.27mmになるように圧延した。MgOを主成分とする分離剤を塗布し、巻取りしてから、雰囲気が100%水素、露点が−10℃、温度が1200℃の条件で20時間の高温焼鈍を施した。巻き戻してから、絶縁コーティングの塗布と伸長平坦化焼鈍を施して、得られた製品の磁気性能は表2のように示される。
方向性珪素スラブの配合及び重量百分率は、C:0.032%、Si:3.2%、Als:0.012%、N:0.01%、S:0.016%、Mn:0.18%、Cu:0.42%であり、残部はFe及び不可避な不純物であった。そのスラブを、1280℃で加熱炉内に3時間保温してから、厚さ2.5mmの熱間圧延板に熱間圧延し、その熱間圧延プラニシングの圧延開始温度と圧延終了温度をそれぞれ1100℃、930℃とした。酸洗してから、一回目の冷間圧延を施し、厚さ0.60mmまで圧延した後、850℃で、湿潤の水素保護雰囲気中で中間脱炭焼鈍を施し、鋼板の炭素含有量を30ppm以下に低下させた。中間脱炭焼鈍してから、二回目の冷間圧延を施し、製品の厚さ0.27mmになるように圧延したMgOを主成分とする分離剤を塗布してから、表3のように異なる高温焼鈍プロセスを施すことにより、製品の磁気性能に対する影響を検知し、その後、絶縁コーティングの塗布と伸長平坦化焼鈍を施して、得られた高温焼鈍プロセスに対応する製品の磁気性能は表3のように示される。
Claims (2)
- 転炉や電気炉で製鋼し、溶鋼を二次精錬・連続鋳造して、スラブを得た後、熱間圧延、一回目の冷間圧延、脱炭焼鈍、二回目の冷間圧延を施し、酸化マグネシウムを主成分とする焼鈍分離剤を塗布し、さらに高温焼鈍を施し、最後に絶縁コーティングの塗布と伸長平坦化焼鈍を施すことを含む高電磁気性能の方向性珪素鋼の製造方法において、上記のスラブの成分は重量百分率で、
C: 0.020%〜0.050%
Si: 2.6%〜3.6%
S: 0.015%〜0.025%
Als:0.008%〜0.028%
N: 0.005%〜0.020%
Mn: 0.15%〜0.5%、且つ10≦ Mn/S ≦20
Cu: 0.3%〜1.2%、且つCu/Mn ≧2
残部:Fe及び不可避な不純物であることを特徴とする高電磁気性能の方向性珪素鋼の製造方法であって、
上記熱間圧延プロセスは、スラブが加熱炉内で1250〜1350℃に加熱され、2〜6時間保温され、さらに熱間圧延を施し、熱間圧延プラニシング途中の圧延開始温度は、1050〜1200℃で、圧延終了温度は、800℃以上であり、
上記高温焼鈍プロセスは、雰囲気を水素又は水素が75%以上の窒素・水素混合ガスの露点D.P.<0℃の乾燥雰囲気とし、温度を1170〜1230℃とする条件で、15時間以上に保温するものである製造方法。 - 上記熱間圧延プラニシング途中の圧延開始温度は、1070〜1130℃で、圧延終了温度は、850℃以上であることを特徴とする、請求項1に記載の高電磁気性能の方向性珪素鋼の製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CN2008100350796A CN101545072B (zh) | 2008-03-25 | 2008-03-25 | 一种高电磁性能取向硅钢的生产方法 |
CN200810035079.6 | 2008-03-25 | ||
PCT/CN2009/071003 WO2009117959A1 (zh) | 2008-03-25 | 2009-03-25 | 一种高电磁性能取向硅钢的生产方法 |
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JP2011517732A JP2011517732A (ja) | 2011-06-16 |
JP5479448B2 true JP5479448B2 (ja) | 2014-04-23 |
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US (1) | US8333846B2 (ja) |
EP (1) | EP2272995B1 (ja) |
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KR (1) | KR101252561B1 (ja) |
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CN104372238B (zh) * | 2014-09-28 | 2016-05-11 | 东北大学 | 一种取向高硅钢的制备方法 |
US20160108488A1 (en) * | 2014-10-15 | 2016-04-21 | Sms Siemag Ag | Process for producing grain-oriented electrical steel strip and grain-oriented electrical steel strip obtained according to said process |
KR101696627B1 (ko) * | 2014-11-26 | 2017-01-16 | 주식회사 포스코 | 방향성 전기강판용 소둔 분리제 조성물, 및 이를 이용한 방향성 전기강판의 제조방법 |
KR101642281B1 (ko) * | 2014-11-27 | 2016-07-25 | 주식회사 포스코 | 방향성 전기강판 및 이의 제조방법 |
WO2017073615A1 (ja) * | 2015-10-26 | 2017-05-04 | 新日鐵住金株式会社 | 方向性電磁鋼板及びその製造に用いる脱炭鋼板 |
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KR101252561B1 (ko) | 2013-04-08 |
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