High-efficiency automobile topcoat spraying process

Abstract

The invention discloses a high-efficiency automobile topcoat spraying process. An oil paint G03, a curing agent and a diluent are mixed in a ratio to form a spray paint, an electroplating surface of a workpiece is sprayed, leveled and baked according to technical conditions, and a sprayed product of which wear resistance, water resistance, macadam impact resistance, adhesive force and appearance fullness reach the national inspection standard is obtained, wherein the curing agent is a composition prepared from the following substances in percentage by mass: 15 to 20 percent of polyurethane, 35 to 40 percent of toluene, 1 to 5 percent of dimethylbenzene, 35 to 40 percent of ethyl acetate and 1 to 5 percent of 2-methoxy1-methyl ethyl acetic acid; and the diluent is a composition prepared from the following substances in percentage by mass: 20 to 30 percent of toluene, 20 to 25 percent of methyl isobutyl ketone, 25 to 30 percent of ethyl acetate and 22 to 32 percent of ethylene glycol monoether acetate.

Description

technical field [0001] The invention relates to an automobile surface paint spraying process, in particular to an automobile electroplating surface paint spraying process. Background technique [0002] The process of spraying surface paint on the surface of automobile electroplating includes "one coating and one baking" and "two coatings and one baking". However, the surface paint sprayed by this process has poor water resistance, gravel impact resistance, and abrasion resistance, and the appearance is not full enough, and the paint is easy to fall off. Therefore, this process is generally used for products with lower quality requirements. The surface paint of high-end cars generally adopts the spraying process of two coatings and one baking, although the two coatings and one baking surface paint spraying process overcomes the poor impact resistance and abrasion resistance of the product Insufficient and other shortcomings, but the complexity of the process increases, the p...

AI Technical Summary

Problems solved by technology

[0002] The process of spraying surface paint on the surface of automobile electroplating includes "one coating and one baking" and "two coatings and one baking". However, the surface paint sprayed by this process has poor water resistance, gravel impact resistance, and abrasion resistance, and the appearance is not full enough, and the paint is easy to fall off. Therefore, this process is generally used for products with lower quality requirements.

The surface paint of high-end cars generally adopts the spraying process of two coatings and one baking, although the two coatings and one baking surface paint spraying process overcomes the poor impact resistance and abrasion resistance of the product Insufficient and other shortcomings, but the complexity of the process increases, the process cycle time is prolonged, the defective rate of the product is increased, and the pass rate of the first off-line is reduced, resulting in a significant increase in manpower, material resources and time costs