According to the difference of geometric shapes of different objects in automobile coating, the following methods are often used in actual operation of spray gun.

1. Transverse spraying method. The spraying pattern is straight, hold the spray gun with your right hand, start from the upper left side of the operator, move the wrench from left to right. When the distance from the line to a connecting surface (the distance is controlled by the individual, generally 800 ~ 1000mm is appropriate), quickly go down and back to the left. The joint surface is generally 1 / 2, 1 / 3 and 1 / 4, which can be mastered according to the coating variety. When spraying an area, spray another surface in sequence. According to custom, it can also be sprayed from the opposite direction, that is, from the lower right side of the operator.

2. Longitudinal spraying method. The method is similar to the horizontal spraying method, except that the spray gun nozzle pattern is changed to the horizontal direction, and the spray gun runs back and forth from the top left or top right. It can also run back and forth from the bottom right or bottom left.

3. Vertical and horizontal crossing method. During spraying, the first longitudinal round-trip spraying and the second transverse round-trip spraying shall be carried out, and the direction of the drawing shall be changed each time.

4. Horizontal double method and vertical double method. The spraying direction remains unchanged. After the first spraying, spray according to the original method. The above operation methods shall be selected randomly according to the variety of coating.