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Does the spraying process require the workpiece?

Location: Index >> News >> Common problem

Does the spraying process require the workpiece?

Release date:2017-07-19 Author:http://59mq.cn/en Clicks:

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Powder coating equipment tells you the spraying construction requirements of the workpiece

Dry, firm and clean. Drying: cement metope maintenance for at least 1 months (winter 7 weeks) above, humidity is less than 8%, wood surface humidity is less than 10%; metope without seepage, no cracks and other structural problems.

Solid powder: no loose, no loosening of the old wall paint.

The basic requirements of metal coating base surface - dry, no rust, clean.

Drying: the humidity of the base surface is less than 8% before painting.

No rust: steel surface rust grade up to Sa2.5 or St3 class. For example, the rust coating is less than 50 microns if we use the company's rust surface primer.

The base material does not meet the requirements, will seriously affect the film properties. The wall humidity may cause paint blistering, peeling, peeling and wall permeability, alkali coating loss of light and even mildew; substrate loose dirt adhesion can affect the film adhesion, cause skin peeling and other phenomena, such as mildew. It will cause mildew paint.



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