Hot-spraying nano composite ceramic coating plastic mold and production method thereof

Abstract

A plastic mold for hot-spray nanometer composite ceramic coating and a production method thereof are provided. The plastic mold is composed of a plastic mold steel basal body, a bottom bonding layer and a nanometer composite ceramic working layer produced by hot-spray technology. The bottom bonding layer adopts any of the Ni / AI, AI / NI or NiCrAl materials. The nanometer composite ceramic working layer adopts the material of granular ball-shaped nanometer composite hot-spray coating powder which is a compound of chromium oxide chromium sesquioxide, titanium dioxide and silicon dioxide. The production method comprises the following steps: firstly, preparing hot-spray coating on mold steel workpieces to be processed according to standard and optimized hot-spray process; secondly, conducting surface grinding and polishing to meet the technical requirements for the size, precision, surface toughness, etc. of the plastic mold. The production method is simple, low in production cost and easy to industrialize, and realizes the high-quality characteristics of the plastic mold such as high rigidity, high wear resistance, high corrosion resistance, long service life, and easiness to de-mould, so that the method has good market application prospect and high commercial value.

Description

technical field [0001] The invention relates to a plastic mold and a production method thereof, in particular to a thermal spraying nano-composite ceramic coating plastic mold and a production method thereof, belonging to the field of mold surface modification. Background technique [0002] Mold manufacturing is the foundation of the manufacturing industry. In electronics, automobiles, motors, electrical appliances, instruments, meters, home appliances, and communication products, 60% to 80% of the parts are shaped by molds. As one of the mold industries, China's plastic mold industry is also developing rapidly. The proportion of plastic molds has reached 36% of the total molds in 2000, and it was close to 40% in 2002. The proportion in import and export is as high as 50% to 60%. With the rapid development of national economy pillar industries such as construction and building materials, this proportion will continue to increase. From the perspective of material type and p...

AI Technical Summary

Problems solved by technology

However, the hardness of the above-mentioned patented product is relatively low, up to 40HRC. After a certain period of use, the surface will be rusted and rough, resulting in poor mold release, which not only affects the life of the mold and the surface quality of the plastic product, but also reduces the production efficiency. Increased operating costs

The existing materials and technologies cannot meet the actual needs of the market and the actual situation of users, and cannot meet the needs of high-tech, high precision, high production efficiency, long service life, and high-quality injection molding products.