-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
- Cosmetic Ingredient
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
Electrostature spray coating technology is a rapid rise in recent years a surface treatment technology, its characteristics do not contain solvents, do not pollute the environment, powder can be recycled, easy to achieve automated production, easy to use, and coating color variety, can meet different weather resistance requirements. However, there are often defects in the hydrostational line that affect the appearance quality and performance of the product. The following will briefly introduce the causes of common coating defects and control measures, he hetero-analysis of the cause of spitting powder
the
.
Possible causes of powder spray gun spitting powder, flow powder
cause analysis: powder by moisture clumps and flow effect is poor, powder concentration in the powder tube is not uniform; The diameter of the powder pipe is reduced, the air flow in the powder tube is too low, the compressed air fluctuates after a short period of high consumption, and the problem of the powder pump.
solutions: improve the powder storage environment, powder after use timely sealing to avoid powder moisture, do a good job of powder equipment repair and maintenance, timely cleaning of powder on the spray room equipment accessories, and replace wear accessories. High-quality powder tubes should be used to keep the inner diameter consistent, powder and concentration gas should be increased, and water in the air tank or exhaust tank should be installed before the high consumption point. Powder is susceptible to external air suspension pollution, powder after the surface of the profile is easy to produce flocs or shrink holes, after baking affects the flatness of the profile surface, so the spray room should take closed measures to prevent the invasion of pollutants. Residual powder in the trachea should be cleaned and cleaned in a timely manner, not used for a long time, easy to lump, powder easy to produce the phenomenon of spitting powder, affecting the spray effect.
In the actual powder spray production, it is necessary to finely manage each process, in view of the appearance of coating defects, try to avoid the repetition of similar coating defects, so as to reduce production costs while improving the quality of powder coating.