The prevention of static electricity in spraying is very important
In painting workshops, the air often contains a large amount of flammable gases volatilized from paints, thinners, and solvents. Although it is equipped with a ventilation device, the exhaust air volume often fails to meet the requirements, and these flammable gases may reach the explosive limit. If electrostatic discharge generates electric sparks, it is very easy to cause combustion and explosion. Especially in the work site, it is inevitable that a lot of spray paint will be scattered, and there will be paint dirt everywhere on the workbench and in the exhaust pipe. If a fire occurs, the fire will spread rapidly.
Since most coatings use various flammable solvents as diluents, the static electricity generated during spraying is very easy to ignite and detonate these solvent gases during discharge. Therefore, how to prevent electrostatic hazards in paint spraying is a problem that cannot be ignored. In order to prevent static electricity from accumulating and causing fires, the spray gun should be equipped with devices to eliminate static electricity, such as good grounding devices; operators should wear anti-static shoes with a resistance of 105～108Ω; absolutely must not wear insulated work shoes; spray non-metallic workpieces The continuous spraying time should not exceed one and a half minutes. The spraying workshop must be well ventilated to reduce the accumulation of flammable gas in the air; the scattered paint must be removed frequently. Without affecting the quality, you can spray water in the spraying workshop to increase the indoor air humidity and reduce the accumulation of static electricity. The amount of paint stored in the workshop should not be too much, and generally should not exceed the amount used in one shift.