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

Oriented electromagnetic steel plate

An electromagnetic steel plate and directional technology, which is applied in the direction of circuits, magnetic materials, electrical components, etc., can solve the problems of lowering, the lack of adhesion between the tension insulation film and the steel plate, and the difficulty in fully exerting the iron loss. The effect of high film adhesion

Active Publication Date: 2020-02-21
NIPPON STEEL CORP
View PDF19 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] However, in the prior art, there were cases where sufficient adhesion between the tensioned insulating coating and the steel sheet could not be obtained, and it was difficult to sufficiently exhibit the expected iron loss reduction effect.

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 plate
  • Oriented electromagnetic steel plate
  • Oriented electromagnetic steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0122] Silicon steel slabs (steel Nos. A to F) having the composition shown in Table 1 were each heated to 1100° C. and subjected to hot rolling to obtain hot-rolled steel sheets with a thickness of 2.6 mm.

[0123] The hot-rolled steel sheet was annealed at 1100° C., and then cold-rolled once or multiple times with intermediate annealing to obtain a cold-rolled steel sheet with a final thickness of 0.23 mm. Thereafter, decarburization annealing and nitriding annealing were performed on the cold-rolled steel sheet.

[0124] [Table 1-1]

[0125]

[0126] [Table 1-2]

[0127]

[0128] Next, apply an aqueous slurry of an annealing separator mainly composed of alumina, perform final annealing at 1200°C for 20 hours to complete secondary recrystallization, and produce a mirror-like luster with no forsterite coating. Electromagnetic steel plate. Before the final annealing, the removal of the annealing separator and the control of the surface state by the scrubber of the abras...

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
diameteraaaaaaaaaa
areaaaaaaaaaaa
Login to View More

Abstract

An oriented electromagnetic steel plate comprises a steel plate and an amorphous oxide film formed on the steel plate. As the chemical composition, the steel plate contains, in mass %, less than or equal to 0.085% C, 0.80-7.00% Si, less than or equal to 1.50% Mn, less than or equal to 0.065% acid soluble Al, less than or equal to 0.013% S, 0-0.80% Cu, 0-0.012% N, 0-0.50% P, 0-1.00% Ni, 0-0.30% Snand 0-0.30% Sb, the remainder consisting of Fe and impurities, and the NSIC value of the surface, which is the value obtained by measuring the image clarity of the surface with an image clarity measurement device, is greater than or equal to 4.0%.

Description

technical field [0001] The present invention relates to a grain-oriented electrical steel sheet used as a core material of a transformer, and in particular to a grain-oriented electrical steel sheet with an amorphous oxide coating excellent in adhesion of a tension insulating coating. [0002] This application claims priority based on Japanese Patent Application No. 2017-137440 for which it applied in Japan on July 13, 2017, and uses the content here. Background technique [0003] Grain-oriented electrical steel sheets are mainly used for transformers. A transformer is continuously excited for a long period of time from installation to disposal, and energy loss continues to occur. Therefore, the energy loss at the time of AC magnetization, that is, iron loss, becomes the main parameter for determining the performance of the transformer. [0004] In order to reduce the core loss of grain-oriented electrical steel sheets, methods such as increasing the aggregation to the {11...

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): C23C22/00C21D8/12C21D9/46C22C38/00C22C38/60H01F1/147
CPCC21D8/12C21D9/46C22C38/60C22C38/02C22C38/04C22C38/16C22C38/08C22C38/008H01F1/18C23C8/14C23C8/80C23C8/02C23C22/78C21D8/1244C21D8/1283H01F1/147C22C38/06H01F1/16C23C22/00C21D6/008C21D8/1222C21D8/1233C21D8/1255C21D8/1261C22C38/001C22C38/002C22C2202/02
Inventor 高谷真介村上健一牛神义行奥村俊介长野翔二
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