JP2021502489A - 磁気特性に優れる無方向性電磁鋼板およびその製造方法 - Google Patents
磁気特性に優れる無方向性電磁鋼板およびその製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 82
- 239000010959 steel Substances 0.000 claims abstract description 82
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 28
- 238000005098 hot rolling Methods 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 16
- 238000007670 refining Methods 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 14
- 238000000137 annealing Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 6
- 238000007872 degassing Methods 0.000 claims description 6
- 238000005097 cold rolling Methods 0.000 claims description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 5
- 230000023556 desulfurization Effects 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 238000011282 treatment Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 238000005275 alloying Methods 0.000 claims description 4
- 238000005262 decarbonization Methods 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 230000002000 scavenging effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 abstract 1
- 239000010949 copper Substances 0.000 description 21
- 239000000463 material Substances 0.000 description 17
- 230000004907 flux Effects 0.000 description 13
- 239000011572 manganese Substances 0.000 description 10
- 239000010936 titanium Substances 0.000 description 9
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 6
- 150000003568 thioethers Chemical class 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910000882 Ca alloy Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 208000009205 Tinnitus Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005363 electrowinning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
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
- C21D8/1261—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 following hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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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
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- 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
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- 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
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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
- C21D8/1216—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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- 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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- 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
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- 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
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- 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
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- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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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- 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
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- 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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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- 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
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
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Abstract
Description
化学成分として、質量%にて、C:0〜0.005%、Si:2.1〜3.2%、Mn:0.2〜1.0%、P:0〜0.2%、Al:0.2〜1.6%、N:0〜0.005%、Ti:0〜0.005%、Cu:0〜0.2%を含有し、残部がFeおよび不可避的不純物からなり、且つ下記の技術的要件を満たす磁気特性に優れる無方向性電磁鋼板。
(MnSを形成するSの含有量+CuxSを形成するSの含有量)/鋼中のSの含有量≦0.2 式(1)
(0.5〜1.0μm)のMnS数/(0.2〜0.5μm)のMnS数≦0.2……式(2)
炭素(C):完成品の鋼の結晶粒成長を強く抑制し、Nb、V、Ti等の元素と結合して微細析出物を形成しやすく、損失増加を引き起こし磁気時効が生じる。したがって、C含有量を0〜0.005%に制限する必要がある。
1)溶銑予備処理により、高炉溶銑の脱硫、脱マンガン及びスラグ除去を行う工程;
2)鋼スクラップを配合し、転炉精錬を行う工程;
3)以下の操作を含むRH真空循環脱ガス精錬を行う工程;
a)溶鋼の炭素含有量を0.005%以下に低下させる脱炭素化、
b)脱酸素・合金化処理、
c)溶鋼中の各元素化学成分が、質量%で、C:0〜0.005%、Si:2.1〜3.2%、Mn:0.2〜1.0%、P:0〜0.2%、Al:0.2〜1.6%、N:0〜0.005%、Ti:0〜0.005%、Cu:0〜0.2%で、残部がFeおよび不可避的不純物からなるようにする、溶鋼の化学成分の最適化、
d)脱ガス・精錬;
4)鋳造によりビレットを形成し、鋳片の表面温度が1100℃から700℃までに低下する降温過程における冷却速度を2.5〜25℃/minとなるように制御する、ビレット鋳造工程;
5)熱間圧延工程;
6)酸洗工程;
7)冷間圧延工程;
8)焼鈍工程;および
9)コーティング工程。
を含む製造方法。
(MnSを形成するSの含有量+CuxSを形成するSの含有量)/鋼中のSの含有量≦0.2 式(1)
(0.5〜1.0μm)のMnS数/(0.2〜0.5μm)のMnS数≦0.2……式(2)
Claims (7)
- 化学成分として、質量%にて、C:0〜0.005%、Si:2.1〜3.2%、Mn:0.2〜1.0%、P:0〜0.2%、Al:0.2〜1.6%、N:0〜0.005%、Ti:0〜0.005%、Cu:0〜0.2%を含有し、残部がFeおよび不可避的不純物からなり、且つ下記の要件を満たす、磁気特性に優れる無方向性電磁鋼板。
(MnSを形成するSの含有量+CuxSを形成するSの含有量)/鋼中のSの含有量≦0.2 式(1) - 0.2〜0.5μmのサイズ範囲内で形成されるMnS数が5.0×108個/mm3以下であり、且つ0.2〜1.0μmのサイズ範囲内で形成されるMnS数が下記の式を満たすことを特徴とする請求項1に記載の磁気特性に優れる無方向性電磁鋼板。
(0.5〜1.0μm)のMnS数/(0.2〜0.5μm)のMnS数≦0.2……式(2) - 前記無方向性電磁鋼板の鉄損P15/50が2.4W/kg以下であることを特徴とする請求項1または2に記載の磁気特性に優れる無方向性電磁鋼板。
- 1)溶銑予備処理により、高炉溶銑の脱硫、脱マンガン及びスラグ除去を行う工程;
2)鋼スクラップを配合し、転炉精錬を行う工程;
3)以下の操作を含むRH真空循環脱ガス精錬を行う工程;
a)溶鋼の炭素含有量を0.005%以下に低下させる脱炭素化、
b)脱酸素・合金化処理、
c)溶鋼中の各元素化学成分が、質量%で、C:0〜0.005%、Si:2.1〜3.2%、Mn:0.2〜1.0%、P:0〜0.2%、Al:0.2〜1.6%、N:0〜0.005%、Ti:0〜0.005%、Cu:0〜0.2%で、残部がFeおよび不可避的不純物からなるようにする、溶鋼の化学成分の最適化、
d)脱ガス・精錬;
4)鋳造によりビレットを形成し、鋳片の表面温度が1100℃から700℃までに低下する降温過程における冷却速度を2.5〜25℃/minとなるように制御する、ビレット鋳造工程;
5)熱間圧延工程;
6)酸洗工程;
7)冷間圧延工程;
8)焼鈍工程;および
9)コーティング工程;
を含むことを特徴とする請求項1〜3のいずれか一項に記載の磁気特性に優れる無方向性電磁鋼板の製造方法。 - 工程4)の鋳造過程において、鋳片の表面温度が1100℃から700℃までに低下する降温過程における冷却速度を2.5〜20℃/minとなるように制御することを特徴とする請求項4に記載の磁気特性に優れる無方向性電磁鋼板の製造方法。
- 工程5)の熱間圧延において、仕上げ圧延過程における鋼帯の冷却速度が20℃/s以下、仕上げ圧延終了時から水冷開始時までの時間が5s以上、巻取り温度が600℃以上であることを特徴とする請求項4に記載の磁気特性に優れる無方向性電磁鋼板の製造方法。
- 工程5)の熱間圧延において、巻取り温度が700℃以上であることを特徴とする請求項6に記載の磁気特性に優れる無方向性電磁鋼板の製造方法。
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PCT/CN2018/095237 WO2019105041A1 (zh) | 2017-11-30 | 2018-07-11 | 磁性优良的无取向电工钢板及其制造方法 |
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CN114015931A (zh) * | 2021-10-12 | 2022-02-08 | 邯郸钢铁集团有限责任公司 | 具有优异铁损和磁性能的无取向电工钢及其生产方法 |
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CN112143963A (zh) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | 一种磁性能优良的无取向电工钢板及其连续退火方法 |
CN112143961A (zh) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | 一种磁性能优良的无取向电工钢板及其连续退火方法 |
CN112143964A (zh) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | 一种极低铁损的无取向电工钢板及其连续退火工艺 |
CN112143962A (zh) * | 2019-06-28 | 2020-12-29 | 宝山钢铁股份有限公司 | 一种高磁感低铁损的无取向电工钢板及其制造方法 |
CN110257613B (zh) * | 2019-07-05 | 2021-04-30 | 武汉钢铁有限公司 | 改善低温高磁感取向硅钢磁性能的方法 |
CN112430780B (zh) * | 2019-08-26 | 2022-03-18 | 宝山钢铁股份有限公司 | 一种含Cu高洁净度无取向电工钢板及其制造方法 |
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