Method for preparing easily cut nickel-zinc magnetic core half-finished product

Abstract

The invention discloses a method for preparing an easily cut nickel-zinc magnetic core half-finished product. The method comprises the following steps: mixing raw materials, performing vibration milling, pelletizing, transferring into a rotary kiln, performing pre-sintering, preparing polyvinyl alcohol glue, mixing products of the two former steps with aids, performing superfine grinding, spray pelletizing and pressing molding, thereby obtaining the easily cut nickel-zinc magnetic core half-finished product. The easily cut nickel-zinc magnetic core half-finished product prepared by using the method is relatively high in strength, good in flexibility, not liable to be fractured, uniform in texture, convenient in later cutting, not liable to be damaged or broken when being cut and tidy in notch, the rejection rate of the production process is greatly reduced, the production cost can be reduced, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to a nickel-zinc magnetic core, in particular to a method for manufacturing a semi-finished product of an easy-cut nickel-zinc magnetic core. Background technique [0002] The manufacturing steps of the semi-finished nickel-zinc magnetic core are: mixing vibration, pre-burning, spray granulation, molding and pressing, and square cutting. The nickel-zinc magnetic core semi-finished products in the prior art have high hardness, brittleness, uneven texture, different density and mechanical properties everywhere, resulting in defects such as cracks, damage, and incomplete cuts in the subsequent cutting process. Defects not only affect the appearance but also affect the electromagnetic performance, so the semi-finished products with these defects will be scrapped, which increases the production cost and reduces the production efficiency. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the i...

AI Technical Summary

Problems solved by technology

The nickel-zinc magnetic core semi-finished products in the prior art have high hardness, brittleness, uneven texture, different density and mechanical properties everywhere, resulting in defects such as cracks, damage, and incomplete cuts in the subsequent cutting process. Defects not only affect the appearance but also affect the electromagnetic performance, so the semi-finished products with these defects will be scrapped, which increases the production cost and reduces the production efficiency