1. Classification and model of spray gun. There are many types and models of spray guns. Although the naming methods of various coating equipment manufacturers are different, there are generally the following classification methods.
2. According to the nozzle type, it can be divided into two types: opposite nozzle type and flat nozzle type. According to the paint supply method, it is divided into three types: siphon type, gravity type and pressure feed type.
The choice of spray gun: Choose according to the different construction objects of the maintenance company. For the paint spraying of ordinary passenger cars and trucks, the PQ-1 domestic spray gun can be used, which is low in price and easy to maintain. For constructions that require high coating quality, it is best to use domestic flat-nozzle siphon or imported spray guns.
3. Choose large, medium and small spray guns according to the amount of maintenance and construction work. The paint output of small spray guns is less than 100g per minute, the paint output of medium spray guns is about 180g per minute, and the paint output of large spray guns is more than 200g per minute.
4. Choose according to different spraying construction projects. Generally speaking, large-caliber spray guns are used for spraying primers, medium-caliber spray guns are used for spraying intermediate coatings, and small-caliber spray guns are used for spraying topcoats.
5. In the special paint repair construction, a special repair spray gun can also be used. The main manufacturers and models of spray guns for repairing abroad.
6. The configuration of the spray gun supporting equipment. In the painting construction, only the spray gun can not realize the work. It is also necessary to select suitable air compressors, air filters and air hoses according to the requirements and construction conditions of the painting construction. Please refer to the relevant instructions of different spray guns. Make specific configuration.
