Coating method of winding amorphous iron core insulating coating

Abstract

The invention relates to a coating method of a winding amorphous iron core insulating coating. The coating method comprises a first step that a whole amorphous iron core is arranged in epoxy glue to conduct vacuum impregnation, a second step that the surface of the amorphous iron core is coated with epoxy resin, and a third step of heating and solidifying after the amorphous iron core is coated with the modified epoxy glue coating. Gaps between amorphous strips are sealed and have certain strength after the epoxy glue impregnation, the coating is neat in surface and uniform in thickness, vibration and noises of the iron core are reduced, and integrated installation is convenient. The coating is thinner than general coating technique and solidifying time is shortened. The epoxy glue enables solidifying contraction percentage to be low, the epoxy glue coating has good adhesiveness and elasticity and has little stress to the iron core, and the coating has little influence on initial magnet conductivity and inductance of the amorphous iron core. The amorphous iron core dealt with the coating method can greatly reduce no-load loss.

Description

technical field

[0001] The invention relates to a coating method of winding-type amorphous iron core insulation coating, which is mainly used in the manufacturing process of amorphous iron cores in single-phase and three-phase filter reactors in amorphous transformers and inverter power supplies. Background technique

[0002] Amorphous nanocrystalline soft magnetic alloy materials have the advantages of both silicon steel and soft ferrite, with high saturation magnetic induction and extremely low iron loss, so they can replace silicon steel and some soft ferrite for various medium and high frequency power In the iron core material of electronic equipment, it plays a role in reducing the volume of the device and reducing the energy consumption of the equipment. If the iron core is made of amorphous material and used in a transformer, the energy-saving effect is very significant. The no-load loss of an amorphous transformer with the same capacity is only a quarter of that of a...