WO2016136515A1 - 電磁鋼板、および、電磁鋼板の製造方法 - Google Patents
電磁鋼板、および、電磁鋼板の製造方法 Download PDFInfo
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- WO2016136515A1 WO2016136515A1 PCT/JP2016/054268 JP2016054268W WO2016136515A1 WO 2016136515 A1 WO2016136515 A1 WO 2016136515A1 JP 2016054268 W JP2016054268 W JP 2016054268W WO 2016136515 A1 WO2016136515 A1 WO 2016136515A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
- H01F1/18—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets with insulating coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/092—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising epoxy resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/025—Electric or magnetic properties
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
- C21D8/1283—Application of a separating or insulating coating
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- 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
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- 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
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- 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
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/447—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from acrylic compounds
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/329—Phosphorus containing acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/092—Polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
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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
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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
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
Definitions
- the present invention relates to an electromagnetic steel sheet and a method for manufacturing the electromagnetic steel sheet.
- a hoop-shaped electromagnetic steel sheet is punched into a predetermined shape, and the punched electromagnetic steel sheets are laminated and then fixed. Manufacture the wick. Next, after winding a copper wire around an iron core tooth or the like, the iron core is impregnated with varnish, a powder paint or the like is sprayed onto the iron core, and baking drying is performed. Furthermore, a motor, a transformer, and the like are manufactured by attaching a terminal for connecting a copper wire, a flange, a bearing, and the like to a dried iron core and fixing the terminal to a case.
- an insulating coating is applied to the surface of the electromagnetic steel sheet in order to prevent a current from flowing between the laminated steel sheets, reduce iron loss, and improve magnetic properties.
- the insulation coating applied to the surface of the electrical steel sheet is required to have insulation, but on the other hand, in order to improve workability when processing the electrical steel sheet, weldability, slipperiness, adhesion, heat resistance and Film properties other than insulating properties such as paintability are also required.
- Examples of such insulating coatings on electrical steel sheets include those containing organic resin as the main component, those containing inorganic acid salt such as chromate or phosphate as the main component, and inorganic acid salt and organic resin.
- organic resin as the main component
- inorganic acid salt such as chromate or phosphate
- inorganic acid salt and organic resin inorganic acid salt and organic resin. The thing which has a mixture as a main component is known.
- organic resin-based components have low heat resistance, and inorganic acid salt-based components are easy to peel off from the steel sheet during processing.
- the component is often used as an insulating film.
- Japanese Patent Laid-Open No. 2002-317276 discloses a nonionic or anionic surfactant having a predetermined HLB (Hydrophile-Lipophile Balance) value in an insulating coating solution containing phosphate and chromate.
- HLB Hydrophile-Lipophile Balance
- a technique for forming an insulating film without using a chromic acid aqueous solution containing hexavalent chromium has been promoted due to increasing awareness of environmental problems.
- a technique for example, in JP-A-06-330338, a phosphate having a specific composition, one or more of boric acid and colloidal silica, an emulsion of an organic resin having a specific particle size, Is disclosed in a specific ratio and baked on a steel sheet.
- Japanese Patent Application Laid-Open No. 2002-47576 discloses an insulating coating treatment solution for an electrical steel sheet containing a specific metal ion primary phosphate and a phosphonic acid compound in a specific ratio, and the insulating coating treatment solution. The technique regarding the used electromagnetic steel plate processing method is disclosed.
- a lubricant that imparts good rust prevention properties to various steel plates and can be easily removed with an alkaline degreasing solution, and can be used as a metal working oil or the like. Techniques relating to the composition are disclosed.
- Japanese Patent Application Laid-Open No. 2010-261063 discloses a technique relating to a treatment liquid for forming an insulating coating on an electrical steel sheet containing a polyvalent metal primary phosphate, a chelating agent, a polyamine, and a synthetic resin. Yes.
- the steel sheets are manufactured by stacking the punched electrical steel sheets, and the iron core is fixed with varnish, and then wound and painted.
- the ground iron part is exposed, so it is very easy to rust.
- the punched electrical steel sheet may be stored for a certain period after the punching process due to a difference in process capability between the punching process and the next process. Further, depending on the motor and the transformer, the punched electromagnetic steel sheet may be transferred not only within the factory but also between factories.
- the insulating coatings disclosed in the above Japanese Patent Publication No. 50-15013 and Japanese Patent Application Laid-Open No. 2002-317276 have a problem in use because they contain a chromium compound.
- the techniques disclosed in the above-mentioned JP-A-06-330338, JP-A-11-80971, JP-A-2002-47576, JP-A-2008-31245, and JP-A-2010-261063 are used.
- the conventional electromagnetic steel sheet had a problem that the end face rust prevention property after punching was not good.
- the present invention has been made in view of the above problems, and the object of the present invention is to provide adhesion, corrosion resistance, and appearance in addition to insulating properties even when a chromium compound is not contained. Another object of the present invention is to provide an electrical steel sheet provided with an insulating coating having good end face rust prevention after punching.
- the gist of the present invention is the following (1) to (6).
- a binder composed of 100 parts by mass of a metal phosphate and 1 to 50 parts by mass of an organic resin having an average particle size of 0.05 to 0.50 ⁇ m;
- a carboxylic acid compound having 2 to 50 carbon atoms having a content of 0.1 to 10.0 parts by mass with respect to 100 parts by mass of the solid content of the binder;
- the organic resin is at least one selected from an acrylic resin, an epoxy resin, and a polyester resin.
- An electrical steel sheet having an insulating coating on the steel sheet surface.
- the organic resin is at least one selected from an acrylic resin, an epoxy resin, and a polyester resin.
- the binder liquid is further mixed with 0.5 to 10 parts by mass of a polyhydric alcohol with respect to 100 parts by mass of the solid content of the binder liquid.
- an insulating coating containing a metal phosphate, an organic resin having a specific average particle diameter, and a carboxylic acid compound having 2 to 50 carbon atoms in a specific ratio is formed on the surface of the electrical steel sheet. It is formed. Accordingly, the present invention provides an electrical steel sheet provided with an insulating coating that has good end face rust prevention properties when punched and laminated, and has good adhesion, corrosion resistance, and appearance.
- the present invention relates to an electromagnetic steel sheet and a method for manufacturing the electromagnetic steel sheet. Specifically, the present invention relates to an electromagnetic steel sheet used as an iron core material for electrical equipment and the like, and a method for producing the electromagnetic steel sheet, and particularly has good end face rust prevention and contains chromic acid. The present invention relates to a magnetic steel sheet having an insulating coating that is not used, and a method for manufacturing the magnetic steel sheet.
- the electrical steel sheet according to the present invention is an electrical steel sheet having an insulating coating formed on the surface.
- the insulating coating comprises a binder composed of 100 parts by mass of a metal phosphate and 1 to 50 parts by mass of an organic resin having an average particle size of 0.05 to 0.50 ⁇ m, and a solid content of the binder of 100 parts by mass.
- the electrical steel sheet on which the insulating coating is formed contains at least Si: 0.1% or more, Al: 0.05% or more, Mn: 0.01% or more, with the balance being in mass%.
- Non-oriented electrical steel sheets that are Fe and impurities can be suitably used.
- Si, Al, and Mn increase the electrical resistance of the electrical steel sheet and improve the magnetic properties as the content increases, but on the other hand, reduce the workability. Therefore, the Si content is preferably less than 4.0% by mass, the Al content is preferably less than 3.0% by mass, and the Mn content is preferably less than 2.0% by mass.
- the content of other optional elements such as S, N and C is preferably less than 100 ppm, more preferably less than 20 ppm.
- the slab having the above steel components is heated to 1150 to 1250 ° C., hot rolled and wound into a coil, and if necessary, a temperature range of 800 ° C. to 1050 ° C. in the state of a hot rolled sheet. After annealing at a temperature of 0.15 to 0.5 mm, the steel sheet annealed at 750 to 1100 ° C. can be used as a magnetic steel sheet.
- the surface of the electrical steel sheet on which the insulating coating is formed may be subjected to any pretreatment before the treatment liquid described later is applied, for example, degreasing treatment with alkali or the like, or hydrochloric acid, sulfuric acid or A pickling treatment with phosphoric acid or the like may be performed. Further, the surface of the electrical steel sheet before the treatment liquid described below is applied may be the surface as it is after finish annealing without being subjected to such pretreatment.
- the surface roughness (Ra) is preferably 1.0 ⁇ m or less, and more preferably 0.1 ⁇ m or more and 0.5 ⁇ m or less.
- the surface roughness (Ra) of the electrical steel sheet can be measured according to the JIS method (JIS B0601).
- the metal phosphate contained in the insulating coating is a solid content when an aqueous solution mainly composed of phosphoric acid and metal ions is dried, and functions as a binder in the insulating coating. .
- a kind of phosphoric acid contained in a phosphoric acid metal salt Orthophosphoric acid, metaphosphoric acid, polyphosphoric acid, etc. are preferable.
- the type of metal ion contained in the phosphoric acid metal salt is not particularly limited, but Al, Mg, Ca, Co, Li, Mn, Ni, Sr, Ti, Zn, and the like are preferable. Mg, Mg, and Zn are more preferable.
- metal phosphates may be used alone or in combination of two or more. Further, only a phosphoric acid metal salt may be used, and phosphoric acid or boric acid may be further added.
- the organic resin contained in the insulating film functions as a binder in the insulating film.
- the organic resin is at least one selected from an acrylic resin, an epoxy resin, and a polyester resin. These organic resins are generally commercially available and can be easily obtained. Moreover, it is possible to obtain similarly about the emulsion of each resin.
- Acrylic resins include methyl acrylate, ethyl acrylate, n-butyl acrylate, i-butyl acrylate, n-octyl acrylate, i-octyl acrylate, 2-ethylhexyl acrylate, n-nonyl acrylate, n-decyl acrylate, or n- Dodecyl acrylate or the like is used as a monomer, and a monomer having a functional group such as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, crotonic acid or itaconic acid, or 2-hydroxylethyl (meth) acrylate, Copolymerized monomers with hydroxyl group such as 2-hydroxylpropyl (meth) acrylate, 3-hydroxylbutyl (meth) acrylate, 2-hydroxylethyl (meth) allyl ether It can be suitably used.
- an amine-modified epoxy resin reacted with carboxylic anhydride can be used.
- an amine-modified epoxy resin reacted with carboxylic anhydride
- Epoxy resins such as isopropanolamine, monopropanolamine, monobutanolamine, monoethanolamine, diethylenetriamine, ethylenediamine, butalamine, propylamine, isophoronediamine, tetrahydrofurfurylamine, xylenediamine, hexylamine, nonylamine, triethylenetetramine, tetramethylene It is modified by the action of amines such as pentamine and diaminodiphenylsulfone. Succinic acid, itaconic anhydride, maleic anhydride, citraconic anhydride, phthalic anhydride, and can be suitably used those obtained by reacting a carboxylic anhydride such as trimellitic anhydride.
- polyester resin examples include terephthalic acid, isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, biphenyldicarboxylic acid, succinic acid, adipic acid, sebacic acid, fumaric acid, maleic acid, maleic anhydride, itaconic acid, and citraconic acid.
- Dicarboxylic acids such as ethylene glycol, 1,2-propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, neopentyldiol, 1,6-hexanediol, triethylene
- Polyester resins obtained by reacting glycols such as glycol, dipropylene glycol, and polyethylene glycol can be suitably used.
- Each organic resin may be an emulsion or a water-soluble resin.
- the organic resin may be one or a mixture of two or more of the above organic resins.
- the average particle size of the organic resin is preferably 0.05 to 0.50 ⁇ m.
- the average particle diameter of the organic resin is less than 0.05 ⁇ m, the organic resin tends to aggregate in the treatment liquid, and the uniformity of the insulating coating is lowered.
- the average particle diameter of the organic resin is more than 0.50 ⁇ m, the stability of the liquid is lowered.
- the average particle size of the organic resin is preferably 0.10 ⁇ m or more, and preferably 0.30 ⁇ m or less.
- the average particle diameter of the organic resin is a number average value of diameters when the primary particles of the organic resin are approximated to a sphere (that is, the number average particle diameter of the primary particles of the organic resin). It can be measured by a diffraction and scattering method (method based on JIS Z8825-1).
- the total amount of the organic resin is 1 to 50 parts by mass with respect to 100 parts by mass of the metal phosphate.
- the mixing ratio of the organic resin is less than 1 part by mass, the concentration of the organic resin is excessively low, so that aggregation easily occurs, and as a result, the stability of the coating liquid decreases.
- the mixing ratio of the organic resin is more than 50 parts by mass, the heat resistance of the formed insulating coating is lowered, which is not appropriate.
- the metal phosphate and organic resin function as a binder for the insulating coating.
- the thickness of the insulating coating is preferably about 0.3 to 5.0 ⁇ m, more preferably 0.5 to 2.0 ⁇ m.
- the carboxylic acid compound having 2 to 50 carbon atoms contained in the insulating coating is used as a rust preventive component and contained in the binder.
- the carboxylic acid compound is a carboxylic acid compound having at least one carboxy group, a carboxylate compound that is a salt of the carboxylic acid compound and a metal, or a mixture of a carboxylic acid compound and a carboxylate compound.
- Examples of the carboxylic acid compound having 2 to 50 carbon atoms include monocarboxylic acids such as linear fatty acids such as lauric acid and stearic acid, and aromatic carboxylic acid derivatives such as saturated carboxylic acid and benzoic acid having a naphthene nucleus. It is done.
- Dicarboxylic acids include succinic acid derivatives such as succinic acid, alkyl succinic acid, alkyl succinic acid half ester, alkenyl succinic acid, alkenyl succinic acid half ester, succinimide, hydroxy fatty acid, mercapto fatty acid, sarcosine derivative, phthalic acid, etc. And an oxidized wax containing a wax or an oxide of petrolatum, and the like.
- Examples of the carboxylate compound having 2 to 50 carbon atoms include salts of the aforementioned carboxylic acid compound and metal.
- said metal cobalt, manganese, zinc, aluminum, calcium, barium, lithium, magnesium, copper, etc. are mentioned.
- the carboxylic acid compound has 2 to 50 carbon atoms.
- Formic acid having less than 2 carbon atoms, that is, having 1 carbon atom, and salts thereof are not only volatile but also toxic.
- the number of carbon atoms exceeds 50, the viscosity of the carboxylic acid compound is high, so that the area attached to the end surface is reduced, and as a result, the rust prevention effect is poor.
- the carboxylic acid compound preferably has 5 or more carbon atoms, and preferably 30 or less.
- the carboxylic acid compound preferably has a linear or branched alkyl or alkenyl group having 4 to 20 carbon atoms, and more preferably has a linear alkyl or alkenyl group having 8 to 14 carbon atoms.
- Examples of the carboxylic acid compound having a linear or branched alkyl group or alkenyl group having 4 to 20 carbon atoms include alkyl succinic acid, alkyl succinic acid half ester, alkenyl succinic acid, alkenyl succinic acid half ester, alkyl benzoic acid, Examples thereof include alkenyl benzoic acid, alkyl salicylic acid, alkenyl salicylic acid, alkyl phthalic acid, alkenyl phthalic acid, and salts thereof.
- the content of the carboxylic acid compound is 0.1 to 10.0 parts by mass with respect to 100 parts by mass of the solid content of the binder.
- content is less than 0.1 mass part, the effect as a rust prevention component cannot be acquired.
- the content exceeds 10.0 parts by mass, stickiness occurs.
- the content of the mixture of these anticorrosive components is preferably 0.3 parts by mass or more and preferably 3.0 parts by mass or less with respect to 100 parts by mass of the solid content of the binder.
- the above carboxylic acid compound when the carboxylic acid compound is added to the coating liquid, the above carboxylic acid compound may be emulsified and mixed using various surfactants.
- the surfactant used for emulsification of the carboxylic acid compound is not particularly limited.
- a nonionic surfactant is suitable, and specifically, polyoxyethylene alkyl ether, Oxyethylene alkyl phenyl ether or polyoxyethylene alkyl ester is more preferred.
- a phosphonic acid compound can be added to the insulating coating as necessary in order to improve corrosion resistance and appearance.
- phosphonic acid compound phosphonic acid, phosphonate, aminotrimethylene phosphonic acid, aminotrimethylene phosphonic acid, hydroxyethane phosphonic acid, and hydroxyethane phosphonic acid salt and derivatives thereof can be preferably used.
- 1-1 hydroxyethylidene-1,1-diphosphonic acid can be more preferably used.
- the content of the phosphonic acid compound is preferably 5 to 50 parts by mass with respect to 100 parts by mass of the solid content of the metal phosphate.
- the content of the phosphonic acid compound is less than 5 parts by mass, the effect of the inclusion cannot be confirmed, which is not preferable.
- the content of the phosphonic acid compound is more than 50 parts by mass, stickiness is generated, which is not preferable.
- the content of the phosphonic acid compound is more preferably 8 parts by mass or more and more preferably 25 parts by mass or less with respect to 100 parts by mass of the solid content of the metal phosphate.
- a polyhydric alcohol may be further added to the insulating coating.
- the polyhydric alcohol used in the present invention represents one having two or more hydroxyl groups in one molecule and sufficiently dissolved in the coating liquid for the insulating coating according to the present invention.
- Specific examples of such polyhydric alcohols include, for example, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, 1,4 butylene glycol, 2,3-butylene glycol, 2-methyl-2, 4-pentanediol, -Ethyl-2, 4 hexanediol, glycerin and the like.
- the content of the polyhydric alcohol with respect to the insulating coating is preferably 0.5 to 10 parts by mass with respect to 100 parts by mass of the solid content of the metal phosphate.
- the content of the polyhydric alcohol is less than 0.5 parts by mass, the appearance of the electrical steel sheet on which the insulating coating is formed is not preferable.
- the content of the polyhydric alcohol is more than 10 parts by mass, stickiness occurs, which is not preferable.
- the content of the polyhydric alcohol is more preferably 1 part by mass or more and more preferably 5 parts by mass or less with respect to 100 parts by mass of the solid content of the metal phosphate.
- a water-soluble inorganic material such as silicate and alumina sol may be further blended and used in the coating solution for forming the insulating film for the purpose of improving the scratch resistance and the like. You may mix
- the coating liquid for forming the insulating film is coated with coloring or extender pigments such as titanium oxide and calcium carbonate, rust preventive agents such as zinc phosphate and calcium phosphate, thickeners, dispersants, film forming aids, and antifoaming agents. Further, an organic solvent, a preservative and the like may be further added.
- an electrical steel sheet having an insulating film formed on the surface thereof is manufactured by applying a coating liquid in which the above-described components are mixed to the electrical steel sheet having the above-described composition and then heating and baking and drying. be able to.
- a coating system is not specifically limited.
- the coating liquid may be applied to the surface of the magnetic steel sheet using a roll coater method, or the coating liquid may be applied to the surface of the magnetic steel sheet using a coating method such as a spray method or a dip method.
- the heating method for baking and drying the coating liquid is not particularly limited, and it is possible to use a normal radiant furnace or hot air furnace, etc., and using an electric heating method such as an induction heating method. Also good.
- the heating temperature is preferably in the range of 150 to 400 ° C.
- the baking time is preferably 5 to 30 seconds.
- the heating temperature is more preferably in the range of 260 to 380 ° C.
- a heating temperature of less than 150 ° C. is not preferable because moisture may remain in the insulating film after baking.
- the heating temperature exceeds 400 ° C.
- the added organic resin may be oxidized, which is not preferable.
- baking time is less than 5 seconds, baking may be uneven, which is not preferable.
- the baking time exceeds 30 seconds, the ratio of the added anticorrosive agent remaining in the insulating coating film may decrease, which is not preferable.
- Si 3.0 mass%
- Al 0.8 mass%
- Mn 0.5 mass%
- the balance is Fe and impurities
- the plate thickness is 0.30 mm
- the surface roughness is A non-oriented electrical steel sheet having an Ra (centerline average roughness) of 0.28 ⁇ m was prepared.
- orthophosphoric acid and each metal hydroxide, oxide, or carbonate such as Al (OH) 3 and Mg (OH) 2 are added to water so that the concentration of the metal phosphate is 40% by mass.
- An aqueous solution of metal phosphate was prepared by dissolving and mixing and stirring.
- binder processing liquid No. shown in Table 1 11 was prepared by mixing an aqueous solution of magnesium chromate and a 30% by mass emulsion solution of acrylic resin 3.
- the aqueous solution of magnesium chromate was prepared by dissolving chromic anhydride in a predetermined amount of pure water and then gradually dissolving an equivalent amount of magnesium oxide with stirring.
- Acrylic resin 1 was synthesized by copolymerizing 40% by mass of methyl methacrylate, 30% by mass of styrene monomer, 10% by mass of 2-hydroxyethyl methacrylate, and 20% by mass of ethylene glycol methacrylate.
- Acrylic resin 2 was synthesized by copolymerizing 20% by mass of methyl acrylate, 30% by mass of styrene monomer, 25% by mass of isobutyl acrylate, 20% by mass of 4-hydroxybutyl acrylate, and 5% by mass of ethylene glycol dimethacrylate.
- Acrylic resin 3 was synthesized by copolymerizing 40% by mass of methyl acrylate, 40% by mass of ethyl acrylate, and 20% by mass of styrene monomer.
- Acrylic resin 4 was synthesized by copolymerizing 40% by mass of acrylate, 40% by mass of dimethyl acrylate, and 20% by mass of styrene monomer.
- Epoxy resin (carboxyl group-containing epoxy resin)
- the bisphenol A epoxy resin was modified with monoethanolamine, and then succinic anhydride was grafted to synthesize a carboxyl group-containing epoxy resin.
- Polyester resin (carboxyl group-containing polyester resin) After copolymerizing 40% by mass of dimethyl terephthalate and 40% by mass of neopentyl glycol, 10% by mass of fumaric acid and 10% by mass of trimellitic anhydride were grafted to synthesize a carboxyl group-containing polyester resin.
- Table 1 “-” indicates that no additive is contained. Moreover, the ratio in Table 1 is a ratio in terms of solid content.
- the average particle size of the acrylic resin 1 is 0.15 ⁇ m
- the average particle size of the acrylic resin 2 is 0.14 ⁇ m
- the average particle size of the acrylic resin 3 is The average particle size of the acrylic resin 4 was 0.35 ⁇ m
- the average particle size of the epoxy resin was 0.20 ⁇ m
- the average particle size of the polyester resin was 0.11 ⁇ m.
- the binder treatment liquid shown in Table 1 contained a predetermined amount of the carboxylic acid compound rust preventive agent shown in Table 2 or other rust preventive agent to prepare a coating solution.
- content of the rust preventive agent of Table 2 is a ratio when the solid content in a binder processing liquid is 100 mass parts.
- “-” indicates that no rust inhibitor is contained.
- a roll coater method was used to apply the treatment liquid to the surface of the electrical steel sheet, and the roll reduction amount and the like were adjusted so that the binder film thickness was about 0.5 ⁇ m. Drying was performed using a hot stove and baked to dryness. Table 3 shows the evaluation measurement results of the obtained Examples and Comparative Examples.
- Insulating based on the inter-layer resistance was measured according to JIS method (JIS C2550), the 3 [Omega] ⁇ cm less than 2 / sheet as " ⁇ ", 3 [Omega] ⁇ cm 2 / sheet or more 10 [Omega ⁇ cm less than 2 / sheet " ⁇ and ", 10 ⁇ ⁇ cm 2 / sheet or more 30 ⁇ ⁇ cm less than 2 / sheet as" ⁇ ", was evaluated 30 ⁇ ⁇ cm 2 / sheet or more as" ⁇ ". In addition, regarding the insulation, a sample having an evaluation of “ ⁇ ” or “ ⁇ ” was accepted.
- Adhesion was evaluated based on the trace of the insulating coating after the steel sheet sample with adhesive tape was wound around each metal rod having a diameter of 10 mm, 20 mm, and 30 mm and the adhesive tape was peeled off from the steel sheet sample.
- 10 mm ⁇ OK means that the insulating coating was not peeled even when bent at 10 mm ⁇
- 20 mm ⁇ OK means that the insulating coating was not peeled off even when bent at 20 mm ⁇
- “insulation coating was not peeled off even when bent at 30 mm ⁇ ” “30 mm ⁇ OK”
- “30 mm ⁇ OUT” was obtained by peeling off the insulating coating by bending 30 mm ⁇ .
- a sample having an evaluation of “10 mm ⁇ OK”, “20 mm ⁇ OK” or “30 mm ⁇ OK” was accepted.
- Corrosion resistance was determined in accordance with a JIS salt spray test (JIS Z2371), and a 10-point evaluation was performed on a sample after 4 hours.
- the evaluation criteria are as follows. For corrosion resistance, a sample with an evaluation of 7 points or more was accepted.
- the end face rust prevention property was evaluated as an evaluation surface by cutting a magnetic steel sheet coated with each insulating coating using a non-oiled cutting machine having a clearance of 10% and aligning the end faces after cutting.
- the cut electrical steel sheet was aged for 48 hours in a constant temperature and humidity chamber with a temperature of 50 ° C. and a humidity of 90%, and the rust generation area ratio of the subsequent evaluation surface was evaluated in the same manner as the corrosion resistance.
- the evaluation criteria are as follows.
- the end surface rust prevention property made the evaluation 7-point or more of the samples pass.
- the uniformity of the film thickness of the insulating coating was evaluated.
- the insulating coating was glossy, smooth and uniform as “5”, and glossy but slightly inferior as “4”. Slightly glossy and smooth but inferior in uniformity is “3”, low gloss, slightly inferior in smoothness and inferior in uniformity is “2”, and inferior in gloss, uniformity and smoothness It was evaluated as “1”.
- the external appearance set the sample whose evaluation is "4" or more as the pass.
- the space factor was measured according to the JIS method (JIS C2550). In addition, the sample whose space factor is 99.4% or more was set as the pass.
- Table 3 summarizes the evaluation results of the above electrical steel sheets.
- Examples 1 to 7 according to the present invention had good end face rust prevention properties and little rust generation after punching.
- Examples 1 to 7 according to the present invention had good insulation, adhesion, corrosion resistance, appearance, and space factor.
- Examples 1 to 7 have substantially the same insulation, adhesion, corrosion resistance, end face rust prevention, appearance, and space factor as the reference example provided with an insulating coating containing a chromium compound. I understood it.
- Comparative Examples 1 to 9 are inferior to Examples 1 to 7 according to the present invention in any of insulation, adhesion, corrosion resistance, end face rust prevention, appearance and space factor. all right.
- Comparative Examples 1 and 2 since the content of the organic resin is out of the scope of the present invention, the end face rust prevention property is lowered.
- comparative example 3 has more content of a rust preventive agent than the range of this invention, adhesiveness and a space factor fall, and the external appearance has deteriorated.
- the content of the rust preventive agent is less than the range of the present invention, so the end face rust preventive property is lowered.
- Comparative Example 9 since the rust preventive agent is not included, the end face rust preventive property is reduced. Has fallen. Furthermore, since Comparative Example 5 is different from the rust inhibitor specified in the present invention in the type of rust preventive agent, the end face rust resistance is reduced. In Comparative Examples 6 and 7, the type of organic resin is the present invention. Since it differs from the organic resin to prescribe
- the electrical steel sheet according to the embodiment of the present invention is excellent in end face rust prevention, and can improve insulation, adhesion, corrosion resistance, appearance, and space factor. It is possible to improve the manufacturing efficiency of the transformer.
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Abstract
Description
前記バインダーの固形分100質量部に対する含有量が0.1~10.0質量部である炭素数2~50のカルボン酸系化合物と、
を含み、
前記有機樹脂は、アクリル樹脂、エポキシ樹脂およびポリエステル樹脂から選択される1種以上である、
絶縁被膜を鋼板表面に有する、電磁鋼板。
前記バインダー液に、炭素数2~50のカルボン酸系化合物を、前記バインダー液の固形分100質量部に対して0.1~10.0質量部混合し、処理液を調製するステップと、
前記処理液を電磁鋼板の表面に塗布し、焼付け乾燥するステップと、
を含み、
前記有機樹脂は、アクリル樹脂、エポキシ樹脂およびポリエステル樹脂から選択される1種以上である、
電磁鋼板の製造方法。
メチルメタクリレート40質量%、スチレンモノマー30質量%、2-ヒドロキシエチルメタクリレートを10質量%、エチレングリコールメタクリレート20質量%を共重合させ、アクリル樹脂1を合成した。
メチルアクリレート20質量%、スチレンモノマー30質量%、イソブチルアクリレート25質量%、4-ヒドロキシブチルアクリレート20質量%、ジメタクリル酸エチレングリコール5質量%を共重合させ、アクリル樹脂2を合成した。
メチルアクリレート40質量%、エチルアクリレート40質量%、スチレンモノマー20質量%を共重合させ、アクリル樹脂3を合成した。
アクリレート40質量%、ジメチルアクリレート40質量%、スチレンモノマー20質量%を共重合させ、アクリル樹脂4を合成した。
ビスフェノールAエポキシ樹脂をモノエタノールアミンで変性させた後、無水コハク酸をグラフト重合させ、カルボキシル基含有エポキシ樹脂を合成した。
ジメチルテレフタレート40質量%とネオペンチルグリコール40質量%とを共重合させた後、フマル酸10質量%および無水トリメリット酸10質量%をグラフト重合させ、カルボキシル基含有ポリエステル樹脂を合成した。
10:錆発生が無かった
9:錆発生が極少量(面積率0.1%以下)
8:錆の発生した面積率=0.1%超過0.25%以下
7:錆の発生した面積率=0.25%超過0.50%以下
6:錆の発生した面積率=0.50%超過1%以下
5:錆の発生した面積率=1%超過2.5%以下
4:錆の発生した面積率=2.5%超過5%以下
3:錆の発生した面積率=5%超過10%以下
2:錆の発生した面積率=10%超過25%以下
1:錆の発生した面積率=25%超過50%以下
10:錆発生が無かった
9:錆発生が極少量(面積率0.1%以下)
8:錆の発生した面積率=0.1%超過0.25%以下
7:錆の発生した面積率=0.25%超過0.50%以下
6:錆の発生した面積率=0.50%超過1%以下
5:錆の発生した面積率=1%超過2.5%以下
4:錆の発生した面積率=2.5%超過5%以下
3:錆の発生した面積率=5%超過10%以下
2:錆の発生した面積率=10%超過25%以下
1:錆の発生した面積率=25%超過50%以下
Claims (6)
- リン酸金属塩100質量部、および、平均粒径が0.05~0.50μmの有機樹脂1~50質量部から構成されるバインダーと、
前記バインダーの固形分100質量部に対する含有量が0.1~10.0質量部である炭素数2~50のカルボン酸系化合物と、
を含み、
前記有機樹脂は、アクリル樹脂、エポキシ樹脂およびポリエステル樹脂から選択される1種以上である、
絶縁被膜を鋼板表面に有する、電磁鋼板。 - 前記絶縁被膜は、前記バインダーの固形分100質量部に対して0.5~10質量部の多価アルコールを含有する、請求項1に記載の電磁鋼板。
- 前記カルボン酸系化合物は、炭素数が4~20の直鎖または分岐のアルキル基またはアルケニル基を有する、請求項1または2に記載の電磁鋼板。
- リン酸金属塩100質量部と、平均粒径が0.05~0.50μmの有機樹脂のエマルジョンを樹脂固形分で1~50質量部とを混合し、バインダー液を調製するステップと、
前記バインダー液に、炭素数2~50のカルボン酸系化合物を、前記バインダー液の固形分100質量部に対して0.1~10.0質量部混合し、処理液を調製するステップと、
前記処理液を電磁鋼板の表面に塗布し、焼付け乾燥するステップと、
を含み、
前記有機樹脂は、アクリル樹脂、エポキシ樹脂およびポリエステル樹脂から選択される1種以上である、
電磁鋼板の製造方法。 - 前記処理液を調製するステップにおいて、前記バインダー液には、さらに多価アルコールを、前記バインダー液の固形分100質量部に対して0.5~10質量部混合する、請求項4に記載の電磁鋼板の製造方法。
- 前記カルボン酸系化合物は、炭素数が4~20の直鎖または分岐のアルキル基またはアルケニル基を有する、請求項4または5に記載の電磁鋼板の製造方法。
Priority Applications (6)
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BR112017015665-2A BR112017015665B1 (pt) | 2015-02-26 | 2016-02-15 | Revestimento isolante e método para revestir uma chapa de aço elétrico com o mesmo |
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US15/550,861 US10706998B2 (en) | 2015-02-26 | 2016-02-15 | Electrical steel sheet and method for producing electrical steel sheet |
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JPWO2021054450A1 (ja) * | 2019-09-20 | 2021-03-25 | ||
WO2021100867A1 (ja) | 2019-11-21 | 2021-05-27 | 日本製鉄株式会社 | 無方向性電磁鋼板およびその製造方法 |
WO2022210947A1 (ja) | 2021-03-31 | 2022-10-06 | 日本製鉄株式会社 | 無方向性電磁鋼板及びその製造方法 |
WO2023033136A1 (ja) | 2021-09-02 | 2023-03-09 | 日本製鉄株式会社 | 無方向性電磁鋼板およびその製造方法 |
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JP5900705B2 (ja) * | 2014-01-31 | 2016-04-06 | Jfeスチール株式会社 | クロムフリー張力被膜用処理液、クロムフリー張力被膜の形成方法およびクロムフリー張力被膜付き方向性電磁鋼板の製造方法 |
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TWI748654B (zh) * | 2019-09-20 | 2021-12-01 | 日商日本製鐵股份有限公司 | 無方向性電磁鋼板 |
JP7226662B1 (ja) * | 2021-03-30 | 2023-02-21 | 日本製鉄株式会社 | 無方向性電磁鋼板およびその製造方法 |
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JP7389368B2 (ja) | 2019-09-20 | 2023-11-30 | 日本製鉄株式会社 | 無方向性電磁鋼板 |
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KR20230129594A (ko) | 2021-03-31 | 2023-09-08 | 닛폰세이테츠 가부시키가이샤 | 무방향성 전자 강판 및 그 제조 방법 |
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EP3263741A1 (en) | 2018-01-03 |
CN107250431A (zh) | 2017-10-13 |
BR112017015665B1 (pt) | 2022-05-03 |
CN107250431B9 (zh) | 2020-02-07 |
JPWO2016136515A1 (ja) | 2017-11-24 |
US20180033529A1 (en) | 2018-02-01 |
TWI629165B (zh) | 2018-07-11 |
CN107250431B (zh) | 2019-12-13 |
BR112017015665A2 (ja) | 2018-03-20 |
EP3263741A4 (en) | 2018-10-31 |
JP6524448B2 (ja) | 2019-06-05 |
TW201702066A (zh) | 2017-01-16 |
US10706998B2 (en) | 2020-07-07 |
KR20170117581A (ko) | 2017-10-23 |
KR102016910B1 (ko) | 2019-09-04 |
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