JP4807064B2 - 低鉄損方向性電磁鋼板とその製造方法 - Google Patents
低鉄損方向性電磁鋼板とその製造方法 Download PDFInfo
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- JP4807064B2 JP4807064B2 JP2005369822A JP2005369822A JP4807064B2 JP 4807064 B2 JP4807064 B2 JP 4807064B2 JP 2005369822 A JP2005369822 A JP 2005369822A JP 2005369822 A JP2005369822 A JP 2005369822A JP 4807064 B2 JP4807064 B2 JP 4807064B2
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- 229910001224 Grain-oriented electrical steel Inorganic materials 0.000 title claims description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 62
- 229910052742 iron Inorganic materials 0.000 title description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 238000000137 annealing Methods 0.000 claims description 24
- 238000001953 recrystallisation Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000005097 cold rolling Methods 0.000 claims description 6
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 4
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims description 2
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 description 25
- 230000004907 flux Effects 0.000 description 20
- 230000005381 magnetic domain Effects 0.000 description 19
- 239000011248 coating agent Substances 0.000 description 16
- 238000000576 coating method Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 15
- 238000009826 distribution Methods 0.000 description 8
- 230000009467 reduction Effects 0.000 description 7
- 229910052839 forsterite Inorganic materials 0.000 description 6
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 238000005261 decarburization Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- HWSZZLVAJGOAAY-UHFFFAOYSA-L lead(II) chloride Chemical compound Cl[Pb]Cl HWSZZLVAJGOAAY-UHFFFAOYSA-L 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- CRGGPIWCSGOBDN-UHFFFAOYSA-N magnesium;dioxido(dioxo)chromium Chemical compound [Mg+2].[O-][Cr]([O-])(=O)=O CRGGPIWCSGOBDN-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
Description
C:0.07mass%、Si:3.3mass%、Mn:0.07mass%、S:0.025mass%、酸可溶性Al:0.026mass%、N:0.008mass%、Sn:0.1mass%を含有する板厚2.0mmの熱延板に、1120℃×2分の焼鈍を施してから、冷間圧延して、最終板厚0.23mmの冷延板とした。この冷延板を、窒素と水素の混合ガス雰囲気中で、850℃×90秒の脱炭を兼ねた一次再結晶焼鈍を施してから、鋼板の切断加工等に用いるCO2レーザーを用いて、鋼板の全面にわたって貫通穴を形成した。貫通穴の分布は、図1に示した三角格子状のパターンAとハニカム状のパターンBの2種類とし、貫通穴の面密度を種々に変化させた。形成した貫通穴を光学顕微鏡で観察したところ、貫通穴の直径は約30μmであり、また、穴加工による鋼板の変形や穴の周囲への溶融塊の付着等は認められなかった。その後、MgOを主成分とする焼鈍分離剤のスラリーを塗布し、乾燥させてから、水素75vol%、窒素25vol%の雰囲気中で、1180℃まで25℃/hrで昇温する二次再結晶焼鈍を施した。
貫通穴の形成方法は、レーザー照射法が簡便である。ミラーを多数並べることで、同時に多数の貫通穴を形成することができるからである。ただし、ドリルやパンチ等の機械的加工を用いても何ら問題はない。
本発明の方向性電磁鋼板は、Siを1.5〜7.0mass%、Mnを0.03〜2.5mass%の範囲で含有することが好ましい。SiおよびMnは、鋼板の電気抵抗を高めて鉄損を低減するのに有効な成分であり、それぞれ1.5mass%以上、0.03mass%以上含有するのが好ましい。しかし、Siは、7.0mass%を超えると、硬度が高くなり過ぎて、製造や加工が困難になり、また、Mnは、2.5mass%を超えると、熱処理時にγ変態を誘起して磁気特性を劣化させるおそれがあるからである。
その後、材料を2つに分け、1つは、MgOを主成分とした焼鈍分離剤を塗布し、二次再結晶過程と純化過程を含む最終仕上焼鈍を施し、フォルステライト被膜を有する方向性電磁鋼板とした。もう1つは、MgOを主成分とし塩化鉛を含む焼鈍分離剤を塗布し、フォルステライト被膜のない平滑な表面を有する最終仕上焼鈍板とし、引き続き、NaCl水溶液中で電解して平滑化処理を施してから、CVD法を用いてTiN皮膜を片面当たり1μmの厚さで被成し、方向性電磁鋼板とした。
その後、両鋼板に対して、リン酸マグネシウム、コロイダルシリカおよびクロム酸マグネシウムを主成分とする水性処理液を塗布し、800℃で焼き付けて、付着量が約8.0g/m2の絶縁被膜を形成し、磁束密度B8(T)および鉄損W17/50(W/kg)の測定に供した。
Claims (2)
- Siを1.5〜7.0mass%含有する方向性電磁鋼板において、鋼板に1cm2当たり0.2〜50個の貫通穴が、一辺の長さが等しいハニカム状、三角格子状、正方格子状、菱形格子状に分布して形成されてなることを特徴とする方向性電磁鋼板。
- Siを1.5〜7.0mass%含有する方向性電磁鋼板の製造方向において、最終冷延後から二次再結晶焼鈍を経て絶縁被膜を形成するまでのいずれかの工程において、鋼板に1cm2当たり0.2〜50個の貫通穴を、一辺の長さが等しいハニカム状、三角格子状、正方格子状、菱形格子状に分布するよう形成することを特徴とする方向性電磁鋼板の製造方法。
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