Patent application number | Description | Published |
20090233114 | Grain-Oriented Electrical Steel Sheet Having High Tensile Strength Insulating Film and Method of Treatment of Such Insulating Film - Grain-oriented electrical steel sheet having a chrome-free high tensile strength insulating film characterized by comprising steel sheet on the surface of which is formed an insulating film containing a phosphate and colloidal silica as main ingredients and containing crystalline magnesium phosphate uniformly dispersed over the entire surface. | 09-17-2009 |
20110039114 | GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND PRODUCING METHOD THEREFOR - A grain-oriented electrical steel sheet has a tension film that does not include chromium. In the present invention, the tension film, including a phosphate and silica as constituents, includes a manganese compound and a potassium compound. The mole ratio K/Mn of potassium to manganese in the film is set to a certain range. However, the manganese described herein does not refer to manganese derived from a manganese phosphate included in raw materials of the film. The film can be produced by preparing a coating solution by adding a compound, which includes the phosphate and the silica and also includes the potassium and the manganese, and applying the coating solution on a grain-oriented electrical steel sheet after final annealing is completed, followed by drying and baking. | 02-17-2011 |
20110039120 | NON-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREOF - An inorganic-organic composite film is formed by coating a application liquid containing an inorganic component and an organic resin on a surface of a steel sheet, and baking the application liquid on the surface of the steel sheet. The application liquid contains phosphate as the inorganic component, and further contains an inorganic powder having a BET specific surface area of 10 m | 02-17-2011 |
20110212335 | ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREOF - An electrical steel sheet provides: a steel strip ( | 09-01-2011 |
20120009436 | NON-ORIENTED MAGNETIC STEEL SHEET AND METHOD FOR PRODUCING THE SAME - A non-oriented magnetic steel sheet contains, by mass %, C: 0.005% or less; Si: 2% to 4%; Mn and V: totally 11% or less; and Al: 3% or less, with the balance being Fe and inevitable impurities, wherein a Mn concentration (mass %) and a V concentration (mass %) in a thickness direction satisfy the following formula. 0.1<(Xs | 01-12-2012 |
20120088096 | Electromagnetic steel sheet having insulating coating and method of manufacturing the same - The present invention provides an electromagnetic steel sheet having an insulating coating on a surface of the electromagnetic steel sheet, the insulating coating including: a binder solution solid content containing metal phosphate; and a silica or silicate filler having an average particle diameter in a range of 2.0 μm to 15.0 μm and an average specific surface area in a range of 1.0 m | 04-12-2012 |
20120171467 | ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME - An electrical steel sheet ( | 07-05-2012 |
20130115443 | ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME - An electrical steel sheet ( | 05-09-2013 |
20130209789 | ELECTRICAL STEEL SHEET AND METHOD OF MANUFACTURING THE SAME - An insulating coating film obtained by mixing 0.5 parts by mass to 10 parts by mass of a copolymer of a fluoroolefin and an ethylenically unsaturated compound when converted into a solid content with 100 parts by mass in solid content of a mixture composed of a metal phosphate and a specific organic resin or a mixture composed of colloidal silica and a specific organic resin is designed to be provided on a surface of an electrical steel sheet, and in this manner, it is possible to obtain an electrical steel sheet having good corrosion resistance under a wet environment and having good properties related to the insulating coating film such as a space factor and adhesiveness. | 08-15-2013 |
Patent application number | Description | Published |
20090047537 | Oriented magnetic steel plate excellent in coating adhesion and method of production of same - The present invention provides oriented magnetic steel plate with excellent coating adhesion, in particular coating edge peeling resistance, that is, oriented magnetic steel plate with excellent coating adhesion containing, by mass %, Si: 1.8 to 7% and having a primary coating having forsterite as its main ingredient on its surface, said oriented magnetic steel plate characterized in that said primary coating contains one or more of Ce, La, Pr, Nd, Sc, and Y in an areal weight per side of 0.001 to 1000 mg/m | 02-19-2009 |
20090208764 | Grain-Oriented Electrical Steel Sheet Having Insulating Film Not Containing Chromium and Insulating Film Agent of Same - The present invention provides a grain-oriented electrical steel sheet product having a superior corrosion resistance, annealing resistance, film tension, and the like in insulating treatment based on a phosphate not containing chromium and a treatment agent for the same, so provides grain-oriented electrical steel sheet having an insulating film not containing chromium characterized by the insulating film containing a phosphate and one or more compounds selected from inorganic compounds of Fe, Ni, Co, Cu, Sr, and Mo in an amount, as metal elements, of 0.06 to 2.10 moles per mole of phosphate, and an insulating film agent of the same. | 08-20-2009 |