Disc-type electrostatic coating process for vehicle transmission shaft aqueous anticorrosion coating material

Abstract

The invention discloses a disc-type electrostatic coating process for a vehicle transmission shaft aqueous anticorrosion coating material, wherein an aqueous anticorrosion coating material is sprayed on a steel structure member by using a disc-type electrostatic spraying gun and then drying is performed, wherein the surface of the steel structure member is subjected to iron-based phosphating treatment, and the aqueous anticorrosion coating material comprises, by weight, 50-70% of an oxidative drying type epoxy phosphate resin, 5-15% of pigment and filler, 5-15% of a functional antirust pigment, 1-2% of a functional accelerant, and 10-20% of deionized water. The present invention further discloses the aqueous coating material. According to the present invention, the problem of the corrosion resistance of the aqueous single-component coating in the iron-based phosphating treatment of the steel structure member, the problems of the offline drying and the sticking resistance of the low-temperature curing single-component coating, and the technical problem of the meeting of the sagging and the leveling of the disc-type electrostatic coating with the single-component aqueous coating material technology are solved.

Description

technical field [0001] The invention relates to a coating process, in particular to a disk-type electrostatic coating process suitable for water-based anticorrosion coatings for automobile transmission shafts. Background technique [0002] Following the announcement of the "Volatile Organic Compounds Pollutant Discharge Pilot Measures" on October 1, 2015, replacing organic solvents with water has become an inevitable trend in the development of the coatings industry. Water-based anti-corrosion coatings use water as a solvent, which avoids safety problems such as flammability and explosion caused by organic solvents such as benzene, as well as environmental protection and health problems, and is more and more popular in the market. The car transmission shaft is a round tubular steel structure with thick wall and slow heat conduction. The workpiece is often treated with iron-based phosphating solution, and the surface is colored and smooth, so the corrosion resistance of the w...

AI Technical Summary

Problems solved by technology

[0006] One of the objectives of the present invention is to provide a disc-type electrostatic coating process suitable for water-based anti-corrosion coatings for automobile drive shafts, to solve the problem of corrosion resistance of water-based one-component coatings for iron-based phosphating steel structures, low-temperature curing One-component coating off-line dryness, anti-adhesive problems and how one-component water-based coating technology meets the technical problems of sagging and leveling of disc electrostatic coating

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