Ceramic earphone and manufacturing method thereof

Abstract

The invention provides a method for manufacturing a ceramic earphone. The method comprises the following steps: pressurizing and mixing ceramic powder and an organic adhesive to form slurry, wherein the organic adhesive comprises 60-90 mass parts of POM, 10-20 mass parts of PE, 10-20 mass parts of EVA, 10-20 mass parts of PW and 5-10 mass parts of SA; extruding and granulating the slurry, thereby obtaining injection molding particles; performing injection molding on the injection molding particles by using a ceramic earphone mold, and generating a green body; performing catalytic degreasing on the green body, wherein the catalyst refers to 50-90 percent of nitric acid in the catalytic degreasing step; and sintering the degreased green body. According to the method disclosed by the invention, the organic adhesive with the components is adopted, and catalytic degreasing is performed in the subsequent step by using nitric acid, so that the production cycle is greatly shortened, the defects such as softening deformation and cracking are overcome, and the yield is improved.

Description

technical field [0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a ceramic earphone and a manufacturing method thereof. Background technique [0002] The existing ceramic earphones are all made of wax-based oil extraction and feeding, and then injection molding is performed. Among them, the wax base can be heated repeatedly, and its thermal degradability in the degreasing stage can be adjusted according to the molecular weight and distribution, so it is most commonly used as an injection molding feed for ceramic earphone products. However, the wax base itself needs to be degreased at high temperature for a long time because of its large internal stress and slow release, and the green embryo is prone to defects such as collapse and deformation during the degreasing process. Therefore, the above-mentioned existing methods lead to long production cycles, The disadvantages of low yield (easy to crack) and high carbon residue...

AI Technical Summary

Problems solved by technology

However, the wax base itself needs to be degreased at high temperature for a long time because of its large internal stress and slow release, and the green embryo is prone to defects such as collapse and deformation during the degreasing process. Therefore, the above-mentioned existing methods lead to long production cycles, Disadvantages of low yield rate (easy to crack), high carbon residue rate and environmental pollution