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Paint-coating technique

A coating process and a technology on the surface of workpieces, applied in coatings, devices for coating liquids on surfaces, and pretreatment of surfaces, etc., can solve problems such as increased production costs, reduced production efficiency, and elimination of defects, and achieve effective covering and operation Easy to improve the first pass rate effect

Inactive Publication Date: 2009-07-29
JINAN QINGQI MOTORCYCLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After spraying the finish varnish and baking it off-line, because of the coating defects, that is, the defects on the surface of the topcoat exist under the surface finish varnish layer, the defects cannot be eliminated by polishing and other rework methods, and the surface quality requirements cannot be met, so it needs to be reworked. Rework greatly reduces production efficiency and increases production costs

Method used

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  • Paint-coating technique

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Experimental program
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Embodiment Construction

[0018] Such as figure 1 As shown, the coating process includes the following steps:

[0019] a) First, clean the surface of the workpiece to be painted to remove foreign matter on the surface of the workpiece, including dust, particles, oil, moisture, etc. During operation, first wipe the surface of the workpiece with a sticky cloth, and then blow the surface of the workpiece with an electrostatic dust removal gun to perform electrostatic dust removal.

[0020] b) Then spray the primer on the surface of the workpiece; it can enhance the protection of the substrate, that is, the workpiece, and add a layer of adhesion layer on the surface of the workpiece to improve the adhesion of the surface of the workpiece, prepare for the topcoat of subsequent spraying, and also cover Subtle defects on the surface of the workpiece make the surface of the workpiece smoother and better surface coating can be obtained to ensure the uniformity of the coating color after the topcoat is sprayed....

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PUM

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Abstract

The invention relates to a coating process, which comprises the following steps: firstly cleaning the surface of a workpiece, and spraying base coat and finishing coat; after spraying the finishing coat, spraying a layer of a mixture fully evenly mixed by the finishing coat and coating varnish, wherein the finishing coat in the mixture can eliminate defects on the surface of the sprayed finishing coat; and drying the base coat, the finishing coat and the mixture after spraying. The coating process can form a higher-quality coating on the surface of the workpiece, realizes effective covering of surface defects of the finishing coat and does not influence the prior effects of a finishing coat layer by spraying the mixture of the finishing coat and the coating varnish, and greatly improves first time pass rate of the spraying to effectively reduce coating cost. The process also has the characteristics of simple method, easy operation and low cost.

Description

technical field [0001] The invention relates to the technical field of coating, in particular to a coating process. Background technique [0002] Reducing the cost of painting, improving the quality of painting and reducing the pollution of painting have always been the theme of the development of painting technology. [0003] In the current assembly line production, the passing rate of one-time painting off-line has always been an important issue that plagues production enterprises. In the construction of the painting line, after the topcoat is sprayed, there are defects such as pits, bubbles, and sweep marks on the surface of the topcoat. After spraying the finish varnish and baking it off-line, because of the coating defects, that is, the defects on the surface of the topcoat exist under the surface finish varnish layer, the defects cannot be eliminated by polishing and other rework methods, and the surface quality requirements cannot be met, so it needs to be reworked. ...

Claims

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Application Information

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IPC IPC(8): B05D1/36B05D3/12B05D3/14B05D3/02
Inventor 刘艳玲
Owner JINAN QINGQI MOTORCYCLE CO LTD