Anticorrosion method for slush mold

Abstract

The invention discloses a slush-molding die corrosion prevention method, which comprises the following steps: a sand-blasting technology is adopted to perform the sand-blasting cleaning treatment on the outer surface of a slush-molding die; the die is processed through preheating treatment, and the preheating temperature is between 80 DEG C and 120 DEG C; an air gun is utilized to perform the silver spraying treatment on the bottom of the die; powders which are made of the materials with high-temperature oxidation resistance and acid and base resistance performances are sprayed on the slush-molding die through a high-speed flame plating technology; the surface-sealing is performed through the silver spraying; the aging treatment is performed. An anticorrosion coating of the slush-molding die manufactured according to the slush-molding die corrosion prevention method plays a good anticorrosion role to the online production of the slush-molding die without any negative influences on the productive tempo. That the technology is applied to the slush-molding die is a first case at home and abroad, which solves the serious corrosion problem when in the online production of the slush-molding die, and greatly prolongs the service life of the slush-molding die without influencing the production technology and the tempo.

Description

technical field [0001] The invention relates to an anti-corrosion method for slush-plastic molds, in particular to a method for preventing corrosion of slush-plastic molds by isolating acid gas and corrosive environment. Background technique [0002] Due to the complex process of slush molding, the temperature is uneven, it is not easy to control, the production is not normal, and the manufacturing is more difficult. Moreover, the working environment of the plastic-lined mold is in a hot and acidic gas with strong corrosiveness, so the mold is severely corroded. Due to the working environment of the slush mold and the bottleneck in the manufacture of the slush mold, the slush mold will be scrapped before it reaches its expected life. The types of scrapping are divided into corrosion perforation scrapping and "corner brittle" crack scrapping. Any kind of scrapping will seriously affect the product quality and production stability. Due to the problem of mold preparation, a l...

AI Technical Summary

Problems solved by technology

However, for large production tasks, many product models, and short slush molding lines, it is unrealistic to directly replace water cooling with air

Images