Unlock instant, AI-driven research and patent intelligence for your innovation.

Electrical steel sheet and method for manufacturing the same

a technology of electric steel and steel sheets, applied in the direction of magnetic bodies, magnetic circuit shapes/forms/construction, transportation and packaging, etc., can solve the problems of failure, difficult to release heat in the radial and decrease the performance of the motor, so as to reduce the gaps in improve the heat release performance in the lamination direction of the laminated iron core

Inactive Publication Date: 2012-07-05
NIPPON STEEL & SUMITOMO METAL CORP
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0068]According to the present invention, a predetermined second component is included in an insulating film, and this component can melt and solidify when a laminated iron core is produced, thereby reducing the gaps in the laminated iron core. Thus, heat release performance in a lamination direction in the laminated iron core can be improved.

Problems solved by technology

Thus, when heat generated from the motor builds up inside, the performance of the motor may decrease or a failure may occur.
However, depending on the structure of the motor or the shape of the laminated iron core, it may be difficult to release heat in the radial direction of the laminated iron core.
Further, even when it is possible to release heat in the radial direction of the laminated iron core, it may be difficult to sufficiently release heat.
In conventional arts, however, it is quite difficult to obtain high heat release performance in the lamination direction of the laminated iron core.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electrical steel sheet and method for manufacturing the same
  • Electrical steel sheet and method for manufacturing the same

Examples

Experimental program
Comparison scheme
Effect test

example

[0132]A base iron having a composition for a non-oriented electrical steel sheet containing Si: 2.5 mass %, Al: 0.5 mass %, and Mn: 0.05 mass % was produced. The thickness of the base iron was 0.35 mm, and the centerline average roughness (Ra) was 0.42 μm.

[0133]Further, various solutions for the first component were prepared. The components of these solutions are illustrated in Table 1.

TABLE 1SOLUTION No. FORMETAL PHOSPHATE ORKIND OFPART BY MASS OFFIRST COMPONENTCOLLOIDAL SILICAORGANIC RESINORGANIC RESINOTHER ADDITIVES1MAGNESIUM PHOSPHATEACRYLIC RESIN 1302ALUMINUM PHOSPHATE——3ALUMINUM PHOSPHATEACRYLIC RESIN 144CALCIUM PHOSPHATEEPOXY RESIN 1455ALUMINUM PHOSPHATE +POLYESTER RESIN22MAGNESIUM PHOSPHATE6CALCIUM PHOSPHATEACRYLIC RESIN 1307NICKEL PHOSPHATE——PHOSPHONIC ACID:5 PARTS BY MASS8MANGANESE PHOSPHATEACRYLIC RESIN 112BORIC ACID:2 PARTS BY MASS9COLLOIDAL SILICA 1ACRYLIC RESIN 120010COLLOIDAL SILICA 1ACRYLIC RESIN 240011COLLOIDAL SILICA 2ACRYLIC RESIN 35012MAGNESIUM PHOSPHATEAQUEOUS40...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Temperatureaaaaaaaaaa
Temperatureaaaaaaaaaa
Temperatureaaaaaaaaaa
Login to View More

Abstract

An electrical steel sheet (10) is provided with a base iron (1) and an insulating film (2) formed on a surface of the base iron (1). The insulating film (2) includes 100 parts by mass of a first component containing a metal phosphate, and 5 parts by mass to 45 parts by mass of a second component composed of particles of one or more kinds selected from a group consisting of a polyolefin wax, an epoxy resin and an acrylic resin, the particles having an average particle size of 2.0 μm to 15.0 μm and a melting point of 60° C. to 140° C.

Description

[0001]This application is a national stage application of International Application No. PCT / JP2010 / 065040, filed Sep. 2, 2010, which claims priority to Japanese Application No. 2009-213486, filed Sep. 15, 2009, the content of which is incorporated by reference in its entirety.TECHNICAL FIELD[0002]The present invention relates to an electrical steel sheet which is preferred for a material of an iron core of an electric apparatus and the like, and to a method for manufacturing the same.BACKGROUND ART[0003]When a motor is manufactured using an electrical steel sheet, the electrical steel sheet in a hoop shape is punched in a predetermined shape, and thereafter a plurality of such electrical steel sheets are laminated and joined to make a laminated iron core. Thereafter, a copper wire is wound around teeth or the like of the laminated iron core, and terminals, flanges, bearings, and so on for connecting the copper wire are attached thereto,which are then fixed to a case. Further, after ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B32B5/16B05D3/02B05D3/00B05D5/00
CPCC09D5/084Y10T428/254H01F1/18H01F1/147C09D7/61C09D7/68C09D7/69C08K2003/321C23C22/00B05D3/0254H01F1/14775H02K1/12
Inventor TAKEDA, KAZUTOSHIKOSUGE, KENJIARAI, SATOSHIISHIZUKA, KIYOKAZU
Owner NIPPON STEEL & SUMITOMO METAL CORP