A manufacturing method of an amorphous alloy iron core with an ultra-thin epoxy resin coating

Abstract

The invention relates to a manufacturing method of an amorphous alloy iron core with an ultra-thin epoxy resin coating, comprising the following steps: (1) stacking a plurality of amorphous alloy strips on the iron core, removing debris and impurities on the end face of the iron core, and using a shielding tape Separate the epoxy coating surface; (2) After mixing the epoxy resin and curing agent evenly, apply it to one end surface of the iron core. After the epoxy resin is fully penetrated, control the thickness of the epoxy resin coating within 0.5mm. Ensure that the surface of the epoxy resin coating is smooth; (3) heat and cure the coated epoxy resin to cure the epoxy resin coating; (4) repeat steps (2)-(3) to another The end faces are coated. Compared with the prior art, the present invention can fully ensure the mechanical strength of the iron core after the epoxy resin is cured, and at the same time ensure the stability of the core characteristics. Compared with the soft iron core using 3M glue, it is less affected by the assembly process coefficient and fully guarantees Stability of product performance.

Description

technical field [0001] The invention relates to a manufacturing method of an amorphous alloy iron core, in particular to a manufacturing method of an amorphous alloy iron core with an ultra-thin epoxy resin coating. Background technique [0002] As the core component of the transformer, the amorphous alloy iron core is processed from amorphous alloy strip material with excellent magnetic conductivity and very low no-load loss. Since the thickness of a single piece of amorphous alloy strip is only about 0.025mm, the amorphous alloy core needs to be stacked with multiple pieces of amorphous strip to form the required size. The iron core is fixed with material. [0003] The traditional method is to apply thick epoxy resin or 3M glue on both ends of the core. The thick epoxy resin structure has a thickness of about 3mm on one side of the epoxy resin. This structure has high mechanical strength of the iron core. It is not easily affected by the assembly coefficient during trans...

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Problems solved by technology

However, the thickness of the epoxy resin layer coated by the above method is about 3mm, which restricts the soft magnetic properties of the amorphous material. The unit loss and excitation power of the iron core itself are relatively large. If the thickness is reduced, the strength of the iron core will be affected. and assembly performance

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