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Grain-oriented electrical steel sheet

一种电磁钢板、方向性的技术，应用在电路、磁性物体、磁性材料等方向，能够解决难以充分地确保张力绝缘覆膜覆膜密合性等问题，达到覆膜密合性优异的效果

Active Publication Date: 2022-04-19
NIPPON STEEL CORP
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  • 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

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  • Grain-oriented electrical steel sheet
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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...

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Abstract

A grain-oriented electrical steel sheet comprising: a base steel sheet; formed on the base sheet and made of amorphous SiO 2 the formed oxide film; and a tension insulating film formed on the oxide film. The base material steel sheet contains C: 0.085% or less, Si: 0.80 to 7.00%, Mn: 1.00% or less, acid-soluble Al: 0.065% or less, and Seq represented by S+0.406·Se: 0.050% in mass % Below, the remaining part: contains Fe and unavoidable impurities. Wherein, the half-value width (FWHM) of the cristobalite-type aluminum phosphate peak obtained by X-ray diffraction is: (i) when using a Co-Kα excitation source, the half-value width of the peak that appears at 2θ=24.8° (FWHM-Co ) is 2.5 degrees or less; or (ii) when using a Cu-Kα excitation source, the half-value width (FWHM-Cu) of the peak that appears at 2θ=21.3° is 2.1 degrees or less.

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

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Application Information

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Patent Type & Authority Patents(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
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