Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Oriented electromagnetic steel sheet

An electromagnetic steel sheet, directional technology, applied in the direction of circuits, magnetic materials, electrical components, etc., can solve the problem that it is difficult to fully ensure the adhesion of the tension insulating film, and achieve the effect of excellent film adhesion

Active Publication Date: 2020-02-21
NIPPON STEEL CORP
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, even in the above-mentioned prior art, it is difficult to sufficiently ensure the film adhesion of the tensioned insulating film.

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
  • Oriented electromagnetic steel sheet
  • Oriented electromagnetic steel sheet
  • Oriented electromagnetic steel sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0121] Next, examples of the present invention will be described, but the conditions in the examples are examples of conditions adopted for confirming the practicability and effects of the present invention, and the present invention is not limited to the examples of conditions. The present invention can adopt various conditions as long as it does not deviate from the gist of the present invention and achieves the object of the present invention.

[0122] (Example)

[0123] A slab (silicon steel) having the composition shown in Table 1-1 was heated to 1100°C for hot rolling to produce a hot-rolled steel sheet with a thickness of 2.6 mm, and the hot-rolled steel sheet was annealed at 1100°C Thereafter, one cold rolling or multiple cold rolling with intermediate annealing was performed to obtain a cold-rolled steel sheet with a final thickness of 0.23 mm.

[0124] Table 1-1

[0125]

[0126] After performing decarburization annealing and nitriding annealing on the cold-roll...

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

No PUM Login to View More

Abstract

This oriented electromagnetic steel sheet is provided with a base material steel sheet, an oxide film formed on the base material steel sheet and formed from amorphous SiO2, and a tension insulating film formed on the oxide film. As chemical components, the base material steel sheet contains, by mass percent, less than or equal to 0.085% C, 0.80-7.00% Si, less than or equal to 1.00% Mn, less thanor equal to 0.065% acid soluble Al, and less than or equal to 0.050% of the Seq represented by S+0.406*Se, the remainder consisting of Fe and unavoidable impurities. Regarding the FWHMs, i.e., the half-value widths of the peaks of cristobalite-type aluminum phosphate obtained by X-ray diffraction, (i) the half-value width (FWHM-Co) of the peak appearing at 2theta = 24.8 degrees when using a Co-Kalpha excitation source is less than or equal to 2.5 degrees, or, (ii) the half-value width (FWHM-Cu) of the peak appearing at 2theta = 21.3 degrees when using a Cu-Kalpha excitation source is less thanor equal to 2.1 degrees.

Description

technical field [0001] The present invention relates to a grain-oriented electrical steel sheet used as a core material of a transformer, and particularly to a grain-oriented electrical steel sheet excellent in adhesion of a tension insulating coating. [0002] this application claims priority based on Japanese Patent Application No. 2017-137417 for which it applied to Japan on July 13, 2017, and uses the content here. Background technique [0003] Grain-oriented electrical steel sheets are mainly used for transformers. Since the transformer is continuously excited for a long period of time from installation to disposal, energy loss continues to occur. Therefore, the energy loss when magnetized by AC, that is, iron loss, becomes the main index to determine the value of the transformer. [0004] In order to reduce the iron loss of grain-oriented electrical steel sheets, many developments have been made so far. For example, increase the concentration of the {110}<001> ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/04C22C38/00C22C38/60C23C8/14C23C26/00H01F1/147
CPCC22C38/60C23C8/14C23C28/04H01F1/147C22C38/02C22C38/04C22C38/06C22C38/08C22C38/16C21D8/12C21D8/1283C21D8/1288C22C38/008C23C22/20C22C38/004C23C26/00H01F1/18C21D3/04C21D6/001C21D6/005C21D6/008C21D8/005C21D8/1272C21D9/46C22C2202/02C23C8/26
Inventor 高谷真介高桥克水上和实奥村俊介长野翔二
Owner NIPPON STEEL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com