Cleaning method for pre-processing

A secondary water washing and working state technology, applied in the field of pre-treatment cleaning, can solve the problems of coating film shrinkage, easy generation of static electricity, sticking dust, etc., achieve high stability and improve the effect of cleaning quality

Inactive Publication Date: 2006-07-05
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the oil stains and release agents on the plastic surface (mostly wax, silicone or stearic acid are used as release agents), the adhesion of the coating will be greatly reduced and the shrinkage of the coating film will be caused.
Moreover, since plast

Method used

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  • Cleaning method for pre-processing

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[0018] The present invention is described in further detail below with reference to the accompanying drawings in conjunction with examples:

[0019] For the pretreatment cleaning method, the cleaning principle used will be described first:

[0020] The oil stains on the surface of the workpiece to be cleaned are wetted, softened and separated under the action of the physical and chemical forces of heat energy and detergent and the mechanical force of the water jet of the cleaning machine. The force leads to the crushing, peeling and falling off of the dirt layer. When the cleaning fluid flows along the workpiece, the dirt particles are taken away, so as to achieve the purpose of cleaning.

[0021] This principle is common in the industry, but how to optimize the arrangement and maximize the work efficiency to make the process arrangement more scientific and reasonable is the content to be disclosed by a pretreatment cleaning method of the present invention. see figure 1 , th...

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Abstract

The present invention relates to a pretreatment cleaning method, applicable to cleaning operation of automotive parts (plastic parts) before painting operation. Said pretreatment cleaning method includes the following steps: predegreasing, degreasing, first water washing, second washing with water, third washing by using deionized water, blow-drying by using high-pressure air, drying by using circulating hot air and cooling.

Description

【Technical field】 [0001] The present invention relates to a pre-treatment cleaning method, especially a method for removing all foreign matter other than the components of the painted parts through a series of chemical or physical means before the coating process of auto parts (plastic parts), providing It is a pre-treatment cleaning method for good substrates suitable for painting requirements. 【Background technique】 [0002] At present, painting is the most economical and effective method for corrosion resistance and decoration of automobiles, and the quality of surface pretreatment (also known as pretreatment) before painting is an important link that directly affects the service life and decorative effect of the coating. The purpose of surface pretreatment before painting is to remove all foreign matter other than the composition of the painted part, provide a good base suitable for painting requirements, and ensure that the coating has good anti-corrosion and decorative...

Claims

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Application Information

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IPC IPC(8): B05D3/00B08B3/02
Inventor 杨乐树
Owner BYD CO LTD
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