With the enhancement of people's awareness of environmental protection and health, the use of water-based paint is also increasing. Whether it is tooling or home improvement, water-based paint has begun to replace oil-based paint and become the mainstream of the market. The use of water-based paint, water-based spray gun is an essential tool. In the process of using the water-based spray gun, sometimes there will be no paint or a small amount of paint. What is the cause? How to solve it?
Reasons why the water-based spray gun cannot spray paint or a small amount of paint:
1. The air supplement hole of the gun pot cover is blocked or the air cap and suction pipe are seriously blocked;
2. There is no paint in the pot;
3. The thimble stroke is too small;
Solutions for water-based spray guns that cannot spray paint or a small amount of paint:
1. Clean the air supplement hole, air cap and suction pipe on the lid;
2. Supplementary coating;
3. Rotate the paint flow adjustment knob to increase the stroke of the needle valve.
There are two main factors in the adjustment of the water-based spray gun: the adjustment of the air output and the paint output.
1. If the air output is too small, it is not easy to atomize the paint liquid, and the paint liquid will be sprinkled in droplets, which will make the coating film uneven. The size of the paint output corresponds to the size of the air output. Before spraying, it is necessary to adjust the appropriate air output and the corresponding paint output, so that the paint liquid is well atomized and sprayed evenly on the surface. When adjusting the spray gun, listen to the sound of the airflow to know the size of the airflow.
2. It depends on the degree of atomization of the spray gun nozzle and the size of the fan-shaped area. Spray gun atomization effect spray gun is composed of gun body and gun head. The gun body and the gun head are connected by a connecting mechanism; the gun head includes a nozzle, and a number of metal round steels are welded inside the nozzle. The nozzles and gun needles currently on the market are made of strong wear-resistant and corrosion-resistant V4A steel through precise machining. Inside the nozzle is a conical paint channel, which fits with the front tip of the gun needle and can form a paint valve action.
