Introduction of spray gun device for home appliance coating equipment

According to experience, water-based paint spraying can also be sprayed using ordinary pot-up air spray guns. Many domestic water-based paint manufacturers use ordinary pot-up air spray guns when preparing samples and trying water-based paint; but because of the spray effect and spray guns More importantly, the water-based paint manufacturers of foreign brands generally require the use of special spray guns for water-based paint, and the most common one is HVLP spray guns. HVLP spray gun has the characteristics of high air volume and low air pressure, which is helpful for the surface drying of water-based paint. At the same time, because of the low rebound and fine atomization during low-pressure spraying, it is widely used in our company's water-based paint spraying. However, it is worth mentioning that although the spray gun in the exhaust gas treatment coating equipment has a large air flow, the degree of atomization is low (about 15 microns). When used in a dry environment, the drying speed will increase and the water-based paint will level out. The performance is not good. At this time, the overall effect of using a medium-pressure and medium-flow spray gun (atomization degree of 12 microns) is better. For the choice of spray gun for water-based paint, it is recommended to choose a spray gun with fine atomization, wide fan surface and better quality; and it is recommended that the spray gun be equipped with an air pressure gauge as much as possible, which has better control of the stability of spraying. In addition, the body of the water-based paint spray gun of the exhaust gas treatment coating equipment should be made of materials with better corrosion resistance and coating treatment as much as possible. The spray gun's gun pot should be made of PVC plastic spray cans as much as possible. For the recommended requirements of this item, spray guns that are not made of iron can not be used in actual spraying. The main considerations are the service life of the spray gun and the safety of spraying quality. Therefore, when choosing a water-based paint spray gun, it is recommended to choose according to the environmental conditions, the coating effect target that needs to be achieved, the service life of the spray gun, and the length of the spray gun use time (such as temporary use).

Compressed air purification system: Compressed air plays an important role in the production process of passenger car painting, such as transporting paint, atomizing paint, driving agitators, driving grinders, blowing the surface of workpieces, etc. The quality of compressed air directly affects Quality of coating products. Traditional paints are more sensitive to water and oil, and water-based paints are more sensitive to oil. The oil in the compressed air or a small amount of oil vapor will cause defects in the coating of the water-based paint. The exhaust gas treatment coating equipment uses compressed air for spraying the water-based paint. In addition to the need to ensure that the compressed air from the air compressor station meets the requirements. Three oil-water filters should be installed at each air connection point in the spray booth to separate solid, liquid and some gas components from the air flowing through the filter. Especially compared to traditional oil-water separators, the additional activated carbon filter can absorb compressed air The oil fumes or oil vapor residues in the oil, household appliances coating equipment effectively reduce the trace oil vapor in the compressed air.