When it comes to automotive primer painting, effect and paint quality are undoubtedly crucial, but at the same time, we must understand that the choice of an automotive primer spray gun is also key. So, how should one choose a car paint spray gun?
There are two situations for automotive spraying: one is painting during the manufacturing process, and the other is for use after the car has scratches. These two situations require different uses of the spray gun.
Original factory spraying involves many steps and generally uses high-temperature automotive paint. If it is full-car spraying, a pressure-fed spray gun is usually used. This type of spray gun does not have a cup on top but a paint inlet that draws paint from a separate paint can. When the paint can is pressurized, it can supply paint to multiple automotive spray guns simultaneously. In full-car spraying, the required amount of paint is relatively large, so a pressure-fed spray gun is suitable for large-scale, continuous spraying tasks.
In the case of offline repairs, a gravity-fed spray gun is typically used. This type of automotive spray gun mainly targets small area repairs and relies mostly on its gravity and the negative pressure between the nozzle and the discharged paint to atomize the paint in the air. If the spraying amount is small, the sprayed area is small, and frequent color changes are required, this type of automotive spray gun should be used.
There are three main types of repair situations. The first is topcoat spraying. During spraying, workers can do economical spraying, use high-flow spraying, or choose low-flow, medium-pressure spraying. Generally, workers use a spray gun specifically meant for topcoats.
The second type is for small area repairs. Currently, automotive 4S shops have primer spray guns, color spray guns, clear coat spray guns, and small area repair spray guns.
The design of the TOOL-BAR primer spray gun emphasizes good filling to ensure that the primer can fully cover and penetrate the surface of the object being painted, forming a solid coating.
Although the atomization fineness of a primer spray gun may not be as fine as a topcoat spray gun, its atomization effect still needs to be uniform to ensure the smoothness and aesthetics of the coating.
The spray pattern of a primer spray gun is more concentrated, with a larger wet area at the center of the spray and a smaller atomization area at the edges. This helps to ensure the filling and sandability of the mid-coat primer.
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