Preparation method of ultrathin, large-size, high-silicon silicon steel sheet by electron beam physical vapor deposition

Abstract

The preparation method for ultrathin lager-size high-silicon electron-beam PVD silicon steel sheet comprises: in vacuum, bombarding with electron beam as heat source to melt the silicon steel sheet material into vapor state; then, depositing the sheet on substrate to obtain the high-silicon silicon sheet plate; finally, uncovering the plate. This invention overcomes the defect in prior art, controls evaporating speed of different material to adjust the product intergradient and thickness, has high efficiency, and special fit to industrialization.

Description

technical field

[0001] The invention relates to a method for preparing silicon steel sheets, in particular to a method for preparing silicon steel sheets by electron beam physical vapor deposition. Background technique

[0002] Fe-6.5wt.%Si silicon steel has excellent soft magnetic properties, such as: low iron loss at medium and high frequencies, low hysteresis and expansion, low coercivity, high magnetic permeability and saturation magnetic induction intensity, and it also has good stability. The advantage is that it is an excellent soft magnetic material. It is especially suitable for the iron core of medium and high frequency motors, transformers and audio frequency transformers. However, due to the poor machinability of this material, the traditional rolling process is difficult to process, and there has been no industrialization in China. Only small-sized high-silicon silicon steel sheets can be made in the laboratory using processes such as rapid-setting methods. Th...

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