CN114555860A - 带有绝缘覆膜的电磁钢板 - Google Patents
带有绝缘覆膜的电磁钢板 Download PDFInfo
- Publication number
- CN114555860A CN114555860A CN202080072374.8A CN202080072374A CN114555860A CN 114555860 A CN114555860 A CN 114555860A CN 202080072374 A CN202080072374 A CN 202080072374A CN 114555860 A CN114555860 A CN 114555860A
- Authority
- CN
- China
- Prior art keywords
- insulating coating
- steel sheet
- rolling direction
- coating film
- rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 117
- 239000011248 coating agent Substances 0.000 title claims abstract description 115
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 67
- 239000010959 steel Substances 0.000 title claims abstract description 67
- 238000005096 rolling process Methods 0.000 claims abstract description 111
- 239000002657 fibrous material Substances 0.000 claims abstract description 48
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 17
- 229910019142 PO4 Inorganic materials 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 9
- 239000010452 phosphate Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 33
- 238000000137 annealing Methods 0.000 description 25
- 238000000034 method Methods 0.000 description 17
- 229910052742 iron Inorganic materials 0.000 description 16
- 229910052878 cordierite Inorganic materials 0.000 description 12
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 12
- 239000000203 mixture Substances 0.000 description 12
- 229910052717 sulfur Inorganic materials 0.000 description 12
- 229910001224 Grain-oriented electrical steel Inorganic materials 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 235000021317 phosphate Nutrition 0.000 description 9
- 239000011651 chromium Substances 0.000 description 8
- 229910052711 selenium Inorganic materials 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000001953 recrystallisation Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000005452 bending Methods 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 5
- 239000008119 colloidal silica Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 229910052839 forsterite Inorganic materials 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000003112 inhibitor Substances 0.000 description 5
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000005261 decarburization Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 229910052787 antimony Inorganic materials 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000011162 core material Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011164 primary particle Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 2
- 229910002427 LaSrAlO4 Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000002003 electron diffraction Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910003080 TiO4 Inorganic materials 0.000 description 1
- 229910009474 Y2O3—ZrO2 Inorganic materials 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 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
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- QQFLQYOOQVLGTQ-UHFFFAOYSA-L magnesium;dihydrogen phosphate Chemical compound [Mg+2].OP(O)([O-])=O.OP(O)([O-])=O QQFLQYOOQVLGTQ-UHFFFAOYSA-L 0.000 description 1
- 230000005381 magnetic domain Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910000401 monomagnesium phosphate Inorganic materials 0.000 description 1
- 235000019785 monomagnesium phosphate Nutrition 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/20—Orthophosphates containing aluminium cations
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
-
- 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
- C21D1/30—Stress-relieving
-
- 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
- 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
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- 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
-
- 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
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/18—Orthophosphates containing manganese cations
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/18—Orthophosphates containing manganese cations
- C23C22/188—Orthophosphates containing manganese cations containing also magnesium cations
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
- C23C22/22—Orthophosphates containing alkaline earth metal cations
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
- C23C22/74—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process for obtaining burned-in conversion coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
- B05D2202/15—Stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
- B05D2401/20—Aqueous dispersion or solution
-
- 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
- C21D1/76—Adjusting the composition of the atmosphere
-
- 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
- C21D8/1244—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
-
- 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
- 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
- C21D8/1288—Application of a tension-inducing 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Child & Adolescent Psychology (AREA)
- Chemical Treatment Of Metals (AREA)
- Soft Magnetic Materials (AREA)
Abstract
本发明提供具有能够在轧制方向上赋予比轧制直角方向大的张力、覆膜密合性也优良的绝缘覆膜的带有绝缘覆膜的电磁钢板。一种带有绝缘覆膜的电磁钢板,其中,在电磁钢板的表面具有含有结晶性的纤维状物质的绝缘覆膜,上述绝缘覆膜中的上述结晶性的纤维状物质的轧制方向截面的轧制方向长度(LRD)与轧制直角方向截面的轧制直角方向长度(LTD)之比(LRD/LTD)为1.5以上且50.0以下。
Description
技术领域
本发明涉及带有绝缘覆膜的电磁钢板。本发明特别是涉及磁特性和绝缘覆膜的覆膜密合性优良的带有绝缘覆膜的电磁钢板,特别涉及带有绝缘覆膜的取向性电磁钢板。
背景技术
电磁钢板是作为旋转器、静止器的铁心材料被广泛使用的软磁性材料。特别是,取向性电磁钢板是作为变压器、发电机的铁心材料使用的软磁性材料,具有作为铁的易磁化轴的<001>取向沿钢板的轧制方向高度地对齐的结晶组织。这样的织构通过在取向性电磁钢板的制造工序中进行二次再结晶退火时使被称为所谓高斯(Goss)取向的(110)[001]取向的晶粒优先地巨大生长的二次再结晶来形成。
通常,在取向性电磁钢板的表面被施加有以磷酸盐为主体的绝缘覆膜(磷酸盐覆膜)。磷酸盐覆膜出于赋予绝缘性、张力而改善磁特性的目的设置在取向性电磁钢板的表面,但还要求加工性、覆膜密合性、防锈性等实用上的性能。磷酸盐覆膜在超过800℃的高温下形成,并且具有比与钢板低的热膨胀系数,因此,由于降低至室温时的钢板与覆膜的热膨胀系数的差异而对钢板赋予张力,具有使铁损降低的效果。另外,对于无取向性电磁钢板而言,还优选出于缓和由压缩应力引起的特性劣化的目的对钢板赋予拉伸应力。因此,在取向性电磁钢板的领域中,期望例如像专利文献1那样对钢板赋予8MPa以上的尽可能高的张力。
为了满足这样的期望,以往提出了各种玻璃质覆膜。例如,专利文献2中提出了以磷酸镁、胶态二氧化硅和铬酸酐作为主体的覆膜,另外,专利文献3中提出了以磷酸铝、胶态二氧化硅和铬酸酐作为主体的覆膜,专利文献4中提出了使用纤维状胶态二氧化硅的覆膜。
该覆膜的热膨胀系数是各向同性的,因此对钢板各向同性地赋予张力。已知在轧制方向上施加张力时,磁畴细化,铁损降低,另一方面,在轧制直角方向上施加张力时,铁损反而增加。作为防止这样的问题的方法,有专利文献5中所公开的技术。专利文献5中公开的技术通过使绝缘覆膜的厚度在轧制直角方向上变化来控制轧制方向和轧制直角方向的张力。
现有技术文献
专利文献
专利文献1:日本特开平8-67913号公报
专利文献2:日本特开昭50-79442号公报
专利文献3:日本特开昭48-39338号公报
专利文献4:日本特开平8-239771号公报
专利文献5:日本特开2001-303261号公报
发明内容
发明所要解决的问题
但是,在专利文献5的方法中,由于形成在板宽度方向上厚度不同的覆膜,因此,在涂覆时需要特殊的涂布方法,或者需要在均匀地涂布后通过加工控制覆膜厚度,因此,存在制造成本、成品率、生产率差的问题。认为如果能够通过涂布、烘烤形成热膨胀行为在轧制方向和轧制直角方向上不同的覆膜则能够解决上述问题,但在以玻璃质为中心的到目前为止的技术中,由于热膨胀为各向同性的,因此难以实现。
本发明的目的在于提供具有能够在轧制方向上赋予比轧制直角方向大的张力、覆膜密合性也优良的绝缘覆膜的带有绝缘覆膜的电磁钢板。
用于解决问题的方法
本发明人发现,通过取向性高地含有结晶性的纤维状物质的绝缘覆膜,可以得到与专利文献5同样的效果,从而完成了本发明。
即,本发明具有以下构成。
[1]一种带有绝缘覆膜的电磁钢板,其中,在电磁钢板的表面具有含有结晶性的纤维状物质的绝缘覆膜,上述绝缘覆膜中的上述结晶性的纤维状物质的轧制方向截面的轧制方向长度(LRD)与轧制直角方向截面的轧制直角方向长度(LTD)之比(LRD/LTD)为1.5以上且50.0以下。
[2]如[1]所述的带有绝缘覆膜的电磁钢板,其中,上述绝缘覆膜中的上述结晶性的纤维状物质的轧制直角方向截面的板厚方向长度(LND)与绝缘覆膜的膜厚(d)之比(LND/d)为0.2以上且2.0以下。
[3]如[1]或[2]所述的带有绝缘覆膜的电磁钢板,其中,上述结晶性的纤维状物质的25℃至800℃温度范围内的体积热膨胀系数为30×10-6/K以下。
[4]如[1]~[3]中任一项所述的带有绝缘覆膜的电磁钢板,其中,上述结晶性的纤维状物质的25℃至800℃温度范围内的线性热膨胀系数具有各向异性。
[5]如[1]~[4]中任一项所述的带有绝缘覆膜的电磁钢板,其中,上述绝缘覆膜含有磷酸盐,所述磷酸盐包含一种或两种以上选自Mg、Al、Ca、Ba、Sr、Zn、Ti、Nd、Mo、Cr、B、Ta、Cu、Mn中的金属元素。
发明效果
根据本发明,可以提供具有能够在轧制方向上赋予比轧制直角方向大的张力、覆膜密合性也优良的绝缘覆膜的带有绝缘覆膜的电磁钢板。
根据本发明,通过控制绝缘覆膜对钢板的轧制方向和轧制直角方向赋予的张力,可以提供能够改善铁损并且使割缝加工时的缝边缘部的覆膜密合性、弯曲加工时的覆膜密合性提高的带有绝缘覆膜的电磁钢板。
附图说明
图1是说明本发明中的轧制方向截面和轧制直角方向截面的定义的示意图。
图2是说明绝缘覆膜中的结晶性的纤维状物质的轧制直角方向截面的轧制直角方向长度(LTD)和板厚方向长度(LND)的定义的示意图。
图3是说明绝缘覆膜中的结晶性的纤维状物质的轧制方向截面的轧制方向长度(LRD)的定义的示意图。
具体实施方式
对成为本发明的基础的实验结果进行说明。
首先,如下制作试样。
通过剪切从通过公知的方法制造的板厚为0.20mm的完成最终退火后的取向性电磁钢板上切出轧制方向300mm×轧制直角方向100mm大小的钢板,除去未反应的退火分离剂后,实施去应力退火(800℃、2小时、N2气氛)。在钢板的表面形成以镁橄榄石作为主体的覆膜。接着,用5质量%磷酸水溶液进行轻酸洗。然后,对于上述轻酸洗后的钢板,以下述方式形成绝缘覆膜。
(现有例1)如上述专利文献2所记载的那样施加专利文献2的实施例2的绝缘覆膜。需要说明的是,绝缘覆膜的单位面积重量以钢板两面合计的干燥后单位面积重量计为9g/m2。
(现有例2)如上述文献记载的那样施加日本特开平9-78253号公报的实施例的绝缘覆膜。需要说明的是,绝缘覆膜的单位面积重量以钢板两面合计的干燥后单位面积重量计为9g/m2。
(发明例)将以固体成分换算计为100质量份的磷酸二氢镁水溶液、以SiO2固体成分换算计为50质量份的胶态二氧化硅、10质量份的堇青石混合,将所得水溶液用纯水稀释,将比重调整为1.20,制作绝缘覆膜形成用处理液(涂覆液)。将上述涂覆液以钢板两面合计的干燥后单位面积重量为9g/m2的方式利用辊涂机涂布到钢板表面上。堇青石的一次粒子为六棱柱状,a轴长度为0.8μm,c轴长度为4.5μm。另外,上述堇青石的25℃至800℃温度范围内的线性热膨胀系数为2.9×10-6/K(a轴方向)、-1.0×10-6/K(c轴方向),25℃至800℃温度范围内的体积热膨胀系数为4.8×10-6/K。接着,装入干燥炉中,在300℃干燥1分钟,然后,在850℃、30秒钟、N2:100体积%气氛的条件下实施烘烤,在钢板表面形成绝缘覆膜。
从这样得到的带有绝缘覆膜的电磁钢板上裁取各试验用试样,进行去应力退火(800℃、2小时、N2气氛)后供于试验。需要说明的是,在试样裁取时不施加应变的试样裁取方法的情况、或者如SEM观察那样应变的影响没有问题的情况下,也可以省略去应力退火。
通过利用SEM(扫描电子显微镜)的背散射电子像观察利用FIB(聚焦离子束)得到的加工截面来确认这样得到的试样的绝缘覆膜中的堇青石的分散状况,测定堇青石的轧制方向长度(LRD)与轧制直角方向长度(LTD)之比(LRD/LTD)、板厚方向长度(LND)和绝缘覆膜的膜厚(d)。
张力(在轧制方向和轧制直角方向上对钢板分别赋予的张力)如下测定:从以上述方式得到的带有绝缘覆膜的电磁钢板上切出轧制方向的张力测定用试样(轧制方向280mm、轧制直角方向30mm)和轧制直角方向的张力测定用试样(轧制方向30mm、轧制直角方向100mm),实施去应力退火(800℃、2小时、N2气氛)后,以一个面的绝缘覆膜不被除去的方式用粘合带遮蔽后,将单面的绝缘覆膜在110℃、25质量%的NaOH水溶液中浸渍而除去,对轧制方向的张力测定用试样、轧制直角方向的张力测定用试样分别测定翘曲量,从而求出张力。需要说明的是,在此,在轧制方向和轧制直角方向上使用大小不同的试样测定张力,但是,在张力测定中,可以适当选择不受样品尺寸的影响地能够测定各个方向的张力的大小的试样。
覆膜密合性通过在将以上述方式得到的带有绝缘覆膜的电磁钢板沿轧制方向剪切时观察绝缘覆膜发生了剥离的区域的长度来进行评价。在剪切后的试样的端部(剪切端部)20mm的长度中,测定从剪切端部剥离绝缘覆膜后的轧制直角方向的长度,将其最大值为100μm以下的情况设为密合性良好,将其最大值超过100μm的情况设为密合性不良。绝缘覆膜的剥离长度测定方法没有特别限定,例如可以利用50倍的SEM观察等进行测定。
磁特性(铁损(W17/50))如下测定:按照JIS C 2550中规定的方法,对将以上述方式得到的带有绝缘覆膜的电磁钢板剪切成轧制直角方向30mm×轧制方向280mm的试样实施去应力退火(800℃、2小时、N2气氛),使用由此得到的试样进行测定。需要说明的是,所有试样的磁通密度(B8)都为1.92T。
如表1所示,可知:根据本发明例的绝缘覆膜,能够在轧制方向上赋予比轧制直角方向大的张力,铁损的降低效果优良,覆膜密合性也优良。
[表1]
接着,对本发明的各构成进行说明。
形成本发明的绝缘覆膜的电磁钢板可以使用通过公知的方法制造的电磁钢板,取向性电磁钢板、无取向性电磁钢板均可以使用。作为优选的取向性电磁钢板的一例,可以使用例如通过如下所示的方法制造的取向性电磁钢板。
首先,对优选的钢的成分组成进行说明。以下,只要没有特别说明,作为各元素的含量的单位的“%”是指“质量%”。
C:0.001~0.10%
C是对于高斯取向晶粒的产生而言有用的成分,为了有效地发挥该作用,优选含有0.001%以上的C。另一方面,C含量超过0.10%时,即使通过脱碳退火也存在引起脱碳不良的情况。因此,C含量优选为0.001~0.10%的范围。
Si:1.0~5.0%
Si是为了提高电阻而降低铁损、并且使铁的BCC组织稳定从而能够进行高温的热处理的必要成分,Si含量优选设定为1.0%以上。另一方面,Si含量超过5.0%时,有时难以进行通常的冷轧。因此,Si含量优选为1.0~5.0%的范围。Si含量更优选为2.0~5.0%的范围。
Mn:0.01~1.0%
Mn不仅有效地有助于改善钢的热脆性,而且在混合存在S、Se的情况下形成MnS、MnSe等析出物而发挥作为晶粒生长的抑制剂的功能。为了有效地发挥该功能,Mn含量优选设定为0.01%以上。另一方面,Mn含量超过1.0%时,有时MnSe等析出物的粒径变得粗大而失去作为抑制剂的效果。因此,Mn含量优选为0.01~1.0%的范围。
sol.Al:0.003~0.050%
Al是在钢中形成AlN而作为分散第二相具有抑制剂的作用的有用成分,因此,优选以sol.Al计含有0.003%以上。另一方面,Al含量以sol.Al计超过0.050%时,有时AlN粗大地析出而失去作为抑制剂的作用。因此,Al含量以sol.Al计优选为0.003~0.050%的范围。
N:0.001~0.020%
N也与Al同样是用于形成AlN的必要成分,因此优选含有0.001%以上。另一方面,含有超过0.020%的N时,有时在钢坯加热时产生鼓起等。因此,N含量优选为0.001~0.020%的范围。
选自S和Se中的一种或两种的合计:0.001~0.05%
S、Se是与Mn、Cu结合而形成MnSe、MnS、Cu2-xSe、Cu2-xS、作为钢中的分散第二相发挥抑制剂的作用的有用成分。为了得到有用的添加效果,优选将这些S、Se的合计含量设定为0.001%以上。另一方面,S、Se的合计含量超过0.05%时,不仅钢坯加热时的固溶变得不完全,而且有时也成为产品表面的缺陷的原因。因此,S、Se的含量在含有S或Se中的一种的情况、含有S和Se这两种的情况下都优选合计为0.001~0.05%的范围。
优选将以上作为钢的基本成分。另外,上述以外的余量可以设定为Fe和不可避免的杂质的成分组成。
另外,在上述成分组成中,可以还含有选自Cu:0.2%以下、Ni:0.5%以下、Cr:0.5%以下、Sb:0.1%以下、Sn:0.5%以下、Mo:0.5%以下、Bi:0.1%以下中的一种或两种以上。通过添加具有作为辅助性抑制剂的作用的元素,能够进一步提高磁性。作为这样的元素,可以列举结晶粒径、容易在表面偏析的上述元素。这些元素的下限没有特别限定,为了利用各成分得到有用的效果,优选将各元素的含量设定为Cu:0.01%以上、Ni:0.01%以上、Cr:0.01%以上、Sb:0.01%以上、Sn:0.01%以上、Mo:0.01%以上、Bi:0.001%以上。另外,超过上述含量的上限时,容易产生覆膜外观的不良、二次再结晶不良,因此优选为上述范围。
在上述成分的基础上,可以还含有选自B:0.01%以下、Ge:0.1%以下、As:0.1%以下、P:0.1%以下、Te:0.1%以下、Nb:0.1%以下、Ti:0.1%以下、V:0.1%以下中的一种或两种以上。通过含有它们中的一种或两种以上,晶粒生长的抑制力被进一步强化,能够稳定地得到更高的磁通密度。即使分别超过上述上限来添加这些元素,效果也饱和,因此,在添加这些元素的情况下,将各元素的含量设定为上述范围以下。这些元素的下限没有特别限定,为了利用各成分得到有用的效果,优选将各元素的含量设定为B:0.001%以上、Ge:0.001%以上、As:0.005%以上、P:0.005%以上、Te:0.005%以上、Nb:0.005%以上、Ti:0.005%以上、V:0.005%以上。
接着,对带有绝缘覆膜的电磁钢板的优选制造方法进行说明。
利用现有公知的精炼工艺将具有上述说明的成分组成的钢熔炼,使用连铸法或铸锭-开坯轧制法制成钢原材(钢坯),然后,对上述钢坯进行热轧而制成热轧板,根据需要实施热轧板退火后,实施一次冷轧或夹着中间退火的两次以上冷轧,制成最终板厚的冷轧板。然后,实施一次再结晶退火和脱碳退火后,涂布以MgO作为主要成分的退火分离剂,实施最终退火,形成以镁橄榄石为主体的覆膜层后,为了形成绝缘覆膜,涂布含有规定成分的绝缘覆膜形成用处理液(涂覆液),根据需要实施干燥处理后,经过兼作烘烤的平坦化退火,通过包含如上一系列工序的制造方法能够制造带有绝缘覆膜的电磁钢板。需要说明的是,上述制造方法是一个例子,并非限定于此,能够应用现有公知的各种制造方法。例如,在脱碳退火后涂布以Al2O3等为主体的分离剂,由此,可以在最终退火后不形成镁橄榄石的情况下通过之后的CVD、PVD、溶胶凝胶法、钢板氧化等方法形成基底覆膜层,然后形成绝缘覆膜,如果使用本发明的绝缘覆膜,则可以在不形成基底覆膜层的情况下在钢基表面直接形成绝缘覆膜层。
在本发明中,结晶性的纤维状物质是指长径比为1.5以上的结晶性的物质。在此,长径比为如下测定的值。
利用图像分析粒度分布计(ジヤスコインターナシヨナル株式会社制造的“IF-200nano”)对测定对象的结晶性的纤维状物质(集合体)进行测定,利用图像分析软件(ジヤスコインターナシヨナル株式会社制造的“PIA-Pro”),求出1000个以上的结晶性的纤维状物质的费雷特宽度(夹着粒子像的平行两直线的间隔中的最小径)平均值与费雷特长度(与最小费雷特径正交的费雷特径)平均值之比(费雷特长度平均值/费雷特宽度平均值),将其作为结晶性的纤维状物质的长径比。
需要说明的是,纤维状物质需要为结晶性的。这是因为,如果纤维状物质为非晶质,则包围纤维状物质的相和非晶质的纤维状物质相在高温下的烘烤时容易反应,相边界变得不清楚,不能增大对钢板赋予的张力的各向异性。
作为结晶性的纤维状物质,可以使用合成品,也可以使用市售品。作为结晶性的纤维状物质,优选无机物质。作为无机物质,可以列举例如:2MgO·2Al2O3·5SiO2、Al2O3、MgO·SiO2、Al2TiO5、CaO-ZrO2、Y2O3-ZrO2、LaSrAlO4、Sr2TiO4等。
绝缘覆膜中的结晶性的纤维状物质的轧制方向截面的轧制方向长度(LRD)、轧制直角方向截面的轧制直角方向长度(LTD)、轧制直角方向截面的板厚方向长度(LND)和绝缘覆膜的膜厚(d)通过利用SEM观察由FIB得到的截面来进行测定。轧制直角方向长度(LTD)、板厚方向长度(LND)和绝缘覆膜的膜厚(d)的测定从轧制直角方向截面进行,轧制方向长度(LRD)的测定从轧制方向截面进行。观察通过背散射电子像进行时,根据物质的组成,对比度清晰,因此优选。LRD、LTD、LND的测定以包含5个以上的结晶性的纤维状物质的倍率进行观察,使用该观察视野内的全部结晶性的纤维状物质的测定值的平均值。需要说明的是,绝缘覆膜中的结晶性的纤维状物质不仅是一次粒子,有时也会凝集而成为二次粒子,但只要测定绝缘覆膜中能够判别为粒子的状态即可。绝缘覆膜的膜厚(d)使用轧制直角方向截面的膜厚的平均值。作为膜厚的平均值,优选测定尽可能宽的范围的膜厚而得到平均信息,但在本发明中,使用轧制直角方向截面的宽度20μm的绝缘覆膜的膜厚的平均值。图1至图3中以示意图示出各长度的定义。
需要说明的是,关于绝缘覆膜中的纤维状物质是结晶性的还是非晶质性的,可以通过用TEM对绝缘覆膜截面进行电子衍射来确认。
结晶性的纤维状物质的轧制方向截面的轧制方向长度(LRD)与轧制直角方向截面的轧制直角方向长度(LTD)之比(LRD/LTD)设定为1.5以上且50.0以下。通过使LRD/LTD为1.5以上,可以对绝缘覆膜所赋予的张力赋予各向异性而提高铁损的降低效果。另外,通过使LRD/LTD为50.0以下,可以抑制绝缘覆膜的覆膜密合性(弯曲密合性)的劣化。LRD/LTD优选为3.0以上、更优选为10.0以上。另外,LRD/LTD优选为40.0以下、更优选为30.0以下。
为了进一步提高结晶性的纤维状物质的取向性而进一步提高绝缘覆膜所赋予的张力的各向异性,结晶性的纤维状物质的轧制直角方向截面的板厚方向长度(LND)与绝缘覆膜的膜厚(d)之比(LND/d)优选为0.2以上、更优选为0.3以上。另外,为了抑制钢板的叠压系数降低而作为变压器铁心的特性劣化的现象,板厚方向截面长度(LND)与绝缘覆膜的膜厚(d)之比(LND/d)优选为2.0以下、更优选为1.5以下、进一步优选为1.0以下。
为了进一步提高绝缘覆膜所赋予的张力的各向异性,轧制直角方向截面的、绝缘覆膜中的结晶性的纤维状物质的截面面积相对于绝缘覆膜的截面面积的面积比率(结晶性的纤维状物质的截面面积/绝缘覆膜截面面积)优选为0.1以上且0.9以下。更优选上述面积比率为0.2以上。另外,更优选上述面积比率为0.8以下。
为了增大绝缘覆膜对钢板赋予的张力,结晶性的纤维状物质的25℃至800℃温度范围内的体积热膨胀系数优选为30×10-6/K以下。上述体积热膨胀系数可以取负值。上述体积热膨胀系数优选为15×10-6/K以下。
为了增大绝缘覆膜对钢板赋予的张力的各向异性,优选结晶性的纤维状物质的25℃至800℃温度范围内的线性热膨胀系数具有各向异性。线性热膨胀系数(α)的取向各向异性优选αLA小于αSA。αLA与αSA之差进一步优选为1.0×10-6/K以上。另外,αLA与αSA之差优选为20×10-6/K以下。需要说明的是,αLA是结晶性的纤维状物质的长轴方向的线性热膨胀系数,αSA是结晶性的纤维状物质的短轴方向的线性热膨胀系数。
上述体积热膨胀系数、线性热膨胀系数可以另外准备通过电子衍射进行鉴定后的物质(绝缘覆膜中存在的结晶性的纤维状物质)来进行测定,或者如果有文献值则可以使用该文献值算出。需要说明的是,结晶性的纤维状物质的25℃至800℃温度范围内的体积热膨胀系数、线性热膨胀系数例如可以通过用高温X射线衍射装置测定25℃和800℃下的晶格常数来求出。
结晶性的纤维状物质的绝缘覆膜中的含量越多,则对钢板赋予的张力越大,因此优选。另一方面,结晶性的纤维状物质的含量变多时,在割缝加工时张力垫等处的粉尘产生量变多,有可能导致作业环境的变差。绝缘覆膜中的结晶性的纤维状物质的含量优选为1.0质量%以上、更优选为3.0质量%以上。另外,绝缘覆膜中的结晶性的纤维状物质的含量优选为50质量%以下、更优选为20质量%以下。
绝缘覆膜除了含有结晶性的纤维状物质以外优选还含有磷酸盐、硼酸盐、硅酸盐等,特别优选含有现在一般作为绝缘覆膜所使用的磷酸盐。磷酸盐具有在大气中吸湿的性质,因此,出于防止上述问题的目的,优选含有一种或两种以上选自Mg、Al、Ca、Ba、Sr、Zn、Ti、Nd、Mo、Cr、B、Ta、Cu和Mn中的金属元素。
本发明的绝缘覆膜可以是含有铬的绝缘覆膜,也可以是不含铬的绝缘覆膜。特别是,不含铬的绝缘覆膜具有与含有铬的绝缘覆膜相比张力劣化的倾向。本发明的绝缘覆膜通过提高取向性地含有结晶性的纤维状物质而提高张力,因此,本发明优选应用于不含铬的绝缘覆膜。
绝缘覆膜对钢板赋予的张力根据以试样的一个面的绝缘覆膜不被除去的方式用粘合带进行遮蔽后使用碱、酸等将另一个面的绝缘覆膜剥离后的钢板的翘曲量(x)求出。更具体而言,使用下述(式1)算出。
对钢板赋予的张力(MPa)=钢板杨氏模量(GPa)×板厚(mm)×翘曲量(mm)÷(翘曲测定长度(mm))2×103…(式1)
在此,关于钢板杨氏模量,在轧制方向的情况下为132GPa、在轧制直角方向的情况下为220GPa。
作为形成绝缘覆膜的一例,在含有磷酸盐的水溶液中混合优选的结晶性的纤维状物质,通过搅拌使其充分分散,准备这样的物质作为绝缘覆膜形成用处理液(涂覆液),利用辊涂机等涂布到电磁钢板的表面后,根据需要在约300℃下进行干燥,在约800℃~约1000℃下进行烘烤处理。需要说明的是,绝缘覆膜中的结晶性的纤维状物质的取向控制主要可以通过调整上述结晶性的纤维状物质的长径比来实施,但为了进一步主动地控制上述结晶性的纤维状物质的取向,例如,可以进行如下操作:调整绝缘覆膜的膜厚;或者在涂布涂覆液时施加剪切;等。
绝缘覆膜在钢板的轧制方向上施加的张力优选为10MPa以上、更优选为12MPa以上。通过提高张力,能够降低铁损、或者进一步降低制成变压器时的噪音。
对于本发明的绝缘覆膜而言,该绝缘覆膜对钢板赋予的张力具有各向异性。在此,具有各向异性是指绝缘覆膜在钢板的轧制方向上赋予的张力与在轧制直角方向上赋予的张力之比(轧制方向/轧制直角方向)为1.05以上。上述的比优选为1.20以上。
从层间绝缘性的观点出发,绝缘覆膜的膜厚(d)优选为0.75μm以上、更优选为1.1μm以上。另外,从叠压系数的观点出发,绝缘覆膜的膜厚(d)优选为7.5μm以下、更优选为6.0μm以下。
绝缘覆膜的单位面积重量优选以能够实现上述膜厚的方式适当决定,通常以单面计优选为2.0g/m2以上且15.0g/m2以下,在两面合计的情况下优选为4.0g/m2以上且30.0g/m2以下。两面合计单位面积重量为4.0g/m2以上时,容易进一步提高层间绝缘性。另一方面,两面合计单位面积重量为30.0g/m2以下时,容易抑制叠压系数的降低。两面合计单位面积重量更优选为6.0g/m2以上。另外,两面合计单位面积重量更优选为24.0g/m2以下。
实施例
(实施例1)
将以质量%计含有Si:3.25%、C:0.04%、Mn:0.08%、S:0.002%、sol.Al:0.015%、N:0.006%、Cu:0.05%、Sb:0.01%的硅钢板钢坯在1150℃下加热20分钟后,进行热轧而制成板厚为2.4mm的热轧板。对上述热轧板实施1000℃、1分钟的退火后,通过冷轧制成最终板厚为0.27mm的冷轧板。从所得到的冷轧板上裁取轧制方向400mm×轧制直角方向100mm尺寸的钢板,在实验室以80℃/秒的加热速度从室温升温到820℃,在湿润气氛(50体积%H2,50体积%N2、露点60℃)下,进行820℃、60秒的一次再结晶退火。接着,将相对于100质量份的MgO混合有5质量份的TiO2的退火分离剂制成水浆料状后,进行涂布、干燥。将该钢板在300℃至800℃之间用100小时升温后,以50℃/小时升温至1200℃,在1200℃下退火5小时,由此进行最终退火,准备具有以镁橄榄石为主体的基底覆膜的钢板。
接着,将以固体成分换算计为100质量份的磷酸二氢铝水溶液、以SiO2固体成分换算计为50质量份的胶态二氧化硅、堇青石如表2所记载的那样混合,将所得水溶液用纯水稀释,将比重调整为1.20,制作涂覆液(需要说明的是,No.1中未混合堇青石)。对于上述涂覆液,以使上述中准备的钢板的两面合计的干燥后单位面积重量为7.0g/m2的方式利用辊涂机涂布涂覆液。
本实施例中使用的堇青石通过对合成条件进行各种变更而使一次粒子的a轴长度、c轴长度如表2所记载的那样进行各种变更。任一堇青石均是:25℃至800℃的线性热膨胀系数为2.9×10-6/K(a轴方向)、-1.0×10-6/K(c轴方向),25℃至800℃的体积热膨胀系数为4.8×10-6/K。
接着,装入干燥炉中(300℃、1分钟),然后,在850℃、30秒钟、N2:100体积%的条件下实施烘烤。
利用SEM的背散射电子像来观察由FIB得到的加工截面,由此确认这样得到的试样的绝缘覆膜中的堇青石的分散状态,测定绝缘覆膜中的堇青石的轧制方向截面的轧制方向长度(LRD)与轧制直角方向截面的轧制直角方向长度(LTD)之比(LRD/LTD)、轧制直角方向截面的板厚方向长度(LND)。绝缘覆膜的膜厚(d)为1.6μm。
张力(在轧制方向和轧制直角方向上分别对钢板赋予的张力)如下求出:从试样上切出轧制方向的张力测定用钢板(轧制方向280mm、轧制直角方向30mm)和轧制直角方向的张力测定用钢板(轧制方向30mm、轧制直角方向100mm),实施去应力退火(800℃、2小时、N2气氛)后,以一个面的绝缘覆膜不被除去的方式用粘合带进行遮蔽后,将单面的绝缘覆膜在110℃、25质量%的NaOH水溶液中浸渍而除去,对轧制方向的张力测定用钢板、轧制直角方向的张力测定用钢板分别测定翘曲量,求出张力。
覆膜密合性(基于剪切的剥离性)通过在将试样沿轧制方向剪切时观察绝缘覆膜发生了剥离的区域的长度来进行评价。在剪切后的试样的端部20mm的长度中,通过50倍的SEM观察测定从剪切端部剥离绝缘覆膜后的轧制直角方向的长度,将其最大值为100μm以下的情况设为密合性良好,将其最大值超过100μm的情况设为密合性不良。
关于磁特性(铁损(W17/50)),通过JIS C 2550中规定的方法,将试样剪切成轧制直角方向30mm×轧制方向280mm,实施去应力退火(800℃、2小时、N2气氛),使用所得试样进行测定。需要说明的是,所有试样的磁通密度(B8)都是1.94T。
弯曲剥离径如下评价:将切割成轧制直角方向30mm×轧制方向280mm的试样卷绕于直径为60mm的圆棒上,在180°弯回时,通过目视调查绝缘覆膜有无发生剥离,以下,一边以5mm的间隔减小圆棒的直径一边进行同样的评价,通过目视以不发生绝缘覆膜的剥离的最小径(弯曲剥离径)进行评价。在该评价中,上述弯曲剥离径越小,则可以判断为覆膜密合性越优良,将弯曲剥离径30mm以下设为良好。
如表2所示,LRD/LTD为1.5以上且50.0以下时,能够在轧制方向和轧制直角方向上赋予不同的张力,可以得到铁损、覆膜密合性(基于剪切的剥离性、弯曲剥离径)中的任一种特性都良好的绝缘覆膜。
(实施例2)
将以质量%计含有Si:3.25%、C:0.04%、Mn:0.08%、S:0.002%、sol.Al:0.015%、N:0.006%、Cu:0.05%、Sb:0.01%的硅钢板钢坯在1150℃下加热20分钟后,进行热轧而制成板厚为2.2mm的热轧板。对上述热轧板实施1000℃、1分钟的退火后,通过冷轧制成最终板厚为0.23mm的冷轧板。接着以50℃/秒的加热速度从室温升温到820℃,在湿润气氛(50体积%H2,50体积%N2、露点60℃)下进行820℃、60秒的一次再结晶退火。
从所得到的一次再结晶退火后的冷轧板上裁取轧制方向400mm×轧制直角方向100mm尺寸的钢板,将相对于100质量份的MgO混合有10质量份TiO2的退火分离剂制成水浆料状后,进行涂布、干燥。将该钢板在300℃至800℃之间用100小时升温后,以50℃/小时升温至1200℃,在1200℃下退火5小时,由此进行最终退火,准备具有以镁橄榄石为主体的基底覆膜的钢板。
接着,将如表3所记载的那样混合后的水溶液用纯水稀释,将比重调整为1.25,制作涂覆液,利用辊涂机,在烘烤后以形成表4所示的绝缘覆膜的膜厚(d)的方式涂布到钢板上。
接着,装入干燥炉(300℃、1分钟)中,然后,在850℃、30秒钟、N2:100体积%的条件下实施烘烤。
利用SEM的背散射电子像来观察由FIB得到的加工截面,由此确认这样得到的试样的绝缘覆膜中的结晶性的纤维状物质(第二相)的分散状态,测定绝缘覆膜中的结晶性的纤维状物质的轧制方向截面的轧制方向长度(LRD)与轧制直角方向截面的轧制直角方向长度(LTD)之比(LRD/LTD)、轧制直角方向截面的板厚方向长度(LND)。
张力、覆膜密合性、磁特性(铁损(W17/50))、弯曲剥离径与实施例1同样地求出。需要说明的是,所有试样的磁通密度(B8)都是1.92T。
如表4所示,LRD/LTD为1.5以上且50.0以下时,能够在轧制方向和轧制直角方向上赋予不同的张力,可以得到铁损、覆膜密合性(基于剪切的剥离性、弯曲剥离径)中的任一种特性都良好的绝缘覆膜。此外,如果在绝缘覆膜中以LND/d为0.2以上的方式含有线性热膨胀系数具有各向异性、体积热膨胀系数为30×10-6/K以下的结晶性的纤维状物质,则预计会进一步改善铁损。
需要说明的是,堇青石(2MgO·2Al2O3·5SiO2)、Al2TiO5、LaSrAlO4是已知线性热膨胀系数具有各向异性的物质。
Claims (5)
1.一种带有绝缘覆膜的电磁钢板,其中,在电磁钢板的表面具有含有结晶性的纤维状物质的绝缘覆膜,所述绝缘覆膜中的所述结晶性的纤维状物质的轧制方向截面的轧制方向长度(LRD)与轧制直角方向截面的轧制直角方向长度(LTD)之比(LRD/LTD)为1.5以上且50.0以下。
2.如权利要求1所述的带有绝缘覆膜的电磁钢板,其中,所述绝缘覆膜中的所述结晶性的纤维状物质的轧制直角方向截面的板厚方向长度(LND)与绝缘覆膜的膜厚(d)之比(LND/d)为0.2以上且2.0以下。
3.如权利要求1或2所述的带有绝缘覆膜的电磁钢板,其中,所述结晶性的纤维状物质的25℃至800℃温度范围内的体积热膨胀系数为30×10-6/K以下。
4.如权利要求1~3中任一项所述的带有绝缘覆膜的电磁钢板,其中,所述结晶性的纤维状物质的25℃至800℃温度范围内的线性热膨胀系数具有各向异性。
5.如权利要求1~4中任一项所述的带有绝缘覆膜的电磁钢板,其中,所述绝缘覆膜含有磷酸盐,所述磷酸盐包含一种或两种以上选自Mg、Al、Ca、Ba、Sr、Zn、Ti、Nd、Mo、Cr、B、Ta、Cu、Mn中的金属元素。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019198433 | 2019-10-31 | ||
JP2019-198433 | 2019-10-31 | ||
PCT/JP2020/024932 WO2021084793A1 (ja) | 2019-10-31 | 2020-06-25 | 絶縁被膜付き電磁鋼板 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN114555860A true CN114555860A (zh) | 2022-05-27 |
CN114555860B CN114555860B (zh) | 2024-06-18 |
Family
ID=75520951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202080072374.8A Active CN114555860B (zh) | 2019-10-31 | 2020-06-25 | 带有绝缘覆膜的电磁钢板 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20240102172A1 (zh) |
EP (1) | EP4026930A4 (zh) |
JP (1) | JP6863534B1 (zh) |
KR (1) | KR20220065863A (zh) |
CN (1) | CN114555860B (zh) |
CA (1) | CA3151419C (zh) |
MX (1) | MX2022004763A (zh) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08239771A (ja) * | 1995-03-02 | 1996-09-17 | Nippon Steel Corp | 高張力絶縁被膜を有する方向性電磁鋼板とその絶縁被膜形成方法 |
JP2000323318A (ja) * | 1999-05-12 | 2000-11-24 | Kawasaki Steel Corp | 鉄損値の低い方向性珪素鋼板 |
JP2001303261A (ja) * | 2000-04-25 | 2001-10-31 | Kawasaki Steel Corp | 張力付与異方性被膜を有する低鉄損一方向性電磁鋼板 |
JP2005133149A (ja) * | 2003-10-30 | 2005-05-26 | Nippon Steel Corp | 電気伝導性に優れた表面処理金属材料 |
CN101223300A (zh) * | 2005-07-14 | 2008-07-16 | 新日本制铁株式会社 | 具有不含铬的绝缘皮膜的取向电磁钢板及其绝缘皮膜剂 |
CN101443479A (zh) * | 2006-05-19 | 2009-05-27 | 新日本制铁株式会社 | 具有高张力绝缘覆膜的方向性电磁钢板及其绝缘覆膜处理方法 |
CN102803521A (zh) * | 2010-03-17 | 2012-11-28 | 新日本制铁株式会社 | 方向性电磁钢板的制造方法 |
CN109983158A (zh) * | 2016-10-31 | 2019-07-05 | 日本制铁株式会社 | 方向性电磁钢板 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH064507B2 (ja) * | 1988-10-21 | 1994-01-19 | 三井造船株式会社 | 低熱膨張コージェライトの製造方法 |
JP3475258B2 (ja) * | 1994-05-23 | 2003-12-08 | 株式会社海水化学研究所 | セラミック被膜形成剤およびその製造方法 |
JP3162624B2 (ja) * | 1996-02-29 | 2001-05-08 | 新日本製鐵株式会社 | 低鉄損一方向性珪素鋼板の製造方法 |
EP2444523B1 (en) * | 2009-06-17 | 2014-04-16 | Nippon Steel & Sumitomo Metal Corporation | Electromagnetic steel sheet having insulating coating film and process for production thereof |
JP5927754B2 (ja) * | 2010-06-29 | 2016-06-01 | Jfeスチール株式会社 | 方向性電磁鋼板およびその製造方法 |
EP3604614B1 (en) * | 2017-03-23 | 2022-05-04 | Nippon Steel Corporation | Electrical steel sheet |
JP6624246B2 (ja) * | 2017-07-18 | 2019-12-25 | Jfeスチール株式会社 | 方向性電磁鋼板およびその製造方法 |
KR20210129138A (ko) * | 2019-03-25 | 2021-10-27 | 닛폰세이테츠 가부시키가이샤 | 방향성 전자 강판 피막 형성용 도포제 및 방향성 전자 강판의 제조 방법 |
-
2020
- 2020-06-25 CN CN202080072374.8A patent/CN114555860B/zh active Active
- 2020-06-25 EP EP20882529.9A patent/EP4026930A4/en active Pending
- 2020-06-25 MX MX2022004763A patent/MX2022004763A/es unknown
- 2020-06-25 CA CA3151419A patent/CA3151419C/en active Active
- 2020-06-25 KR KR1020227013527A patent/KR20220065863A/ko not_active Application Discontinuation
- 2020-06-25 US US17/769,061 patent/US20240102172A1/en active Pending
- 2020-06-25 JP JP2020555935A patent/JP6863534B1/ja active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08239771A (ja) * | 1995-03-02 | 1996-09-17 | Nippon Steel Corp | 高張力絶縁被膜を有する方向性電磁鋼板とその絶縁被膜形成方法 |
JP2000323318A (ja) * | 1999-05-12 | 2000-11-24 | Kawasaki Steel Corp | 鉄損値の低い方向性珪素鋼板 |
JP2001303261A (ja) * | 2000-04-25 | 2001-10-31 | Kawasaki Steel Corp | 張力付与異方性被膜を有する低鉄損一方向性電磁鋼板 |
JP2005133149A (ja) * | 2003-10-30 | 2005-05-26 | Nippon Steel Corp | 電気伝導性に優れた表面処理金属材料 |
CN101223300A (zh) * | 2005-07-14 | 2008-07-16 | 新日本制铁株式会社 | 具有不含铬的绝缘皮膜的取向电磁钢板及其绝缘皮膜剂 |
CN101443479A (zh) * | 2006-05-19 | 2009-05-27 | 新日本制铁株式会社 | 具有高张力绝缘覆膜的方向性电磁钢板及其绝缘覆膜处理方法 |
CN102803521A (zh) * | 2010-03-17 | 2012-11-28 | 新日本制铁株式会社 | 方向性电磁钢板的制造方法 |
CN109983158A (zh) * | 2016-10-31 | 2019-07-05 | 日本制铁株式会社 | 方向性电磁钢板 |
Also Published As
Publication number | Publication date |
---|---|
KR20220065863A (ko) | 2022-05-20 |
JP6863534B1 (ja) | 2021-04-21 |
MX2022004763A (es) | 2022-05-16 |
EP4026930A4 (en) | 2022-10-26 |
EP4026930A1 (en) | 2022-07-13 |
CN114555860B (zh) | 2024-06-18 |
US20240102172A1 (en) | 2024-03-28 |
JPWO2021084793A1 (zh) | 2021-05-06 |
CA3151419A1 (en) | 2021-05-06 |
CA3151419C (en) | 2024-01-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100727333B1 (ko) | 소형 철심에 적합한 전자강판 및 그 제조방법 | |
KR101620763B1 (ko) | 방향성 전기 강판 및 그 제조 방법 | |
TWI625175B (zh) | 高矽鋼板及其製造方法 | |
KR102393831B1 (ko) | 방향성 전자 강판 | |
CN111684106B (zh) | 带有绝缘被膜的电磁钢板及其制造方法 | |
JP6769587B1 (ja) | 方向性電磁鋼板およびその製造方法 | |
WO2020149347A1 (ja) | 方向性電磁鋼板の製造方法 | |
JP5037796B2 (ja) | 方向性電磁鋼板の製造方法 | |
JP6981510B2 (ja) | 絶縁被膜付き方向性電磁鋼板 | |
CN114555860B (zh) | 带有绝缘覆膜的电磁钢板 | |
JP7265186B2 (ja) | 方向性電磁鋼板及びその製造方法 | |
WO2021084793A1 (ja) | 絶縁被膜付き電磁鋼板 | |
CN112204170B (zh) | 带有绝缘被膜的电磁钢板及其制造方法 | |
JP6904499B1 (ja) | 被膜形成方法および絶縁被膜付き電磁鋼板の製造方法 | |
JP7231895B1 (ja) | 無方向性電磁鋼板とその製造方法 | |
JP7453379B2 (ja) | 方向性電磁鋼板用焼鈍分離剤組成物、方向性電磁鋼板およびその製造方法 | |
EP4095284A1 (en) | Insulating-coated oriented electromagnetic steel sheet and method for producing same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |