However,Guest Posting all flammable powder or dust will form an explosive mixture with air, it is a potential source of danger. Take appropriate measures in advance can securely transport, store and process. For safety reasons, the concentration of previously mentioned various powders should be no more than10g/m3.

Compared with non-pigmented resin aluminum seamless tubes powder, when the coating added 5-6% aluminum powder, the so-called Dust Comstant (explosive metric) and the maximum explosion pressure will be increased 10%. Aluminum powder content continues to be increased, the explosive power will increase. When the aluminum content greater than 25%, it will reach the explosive power of pure metal powder. But, whatever the dispersion method, pure resin powder is lower than the minimum trigger combustion energy. If aluminum powder pigment content more than 10% and use small particle size and without coating treated aluminum powder, the lowest combustion initiation energy may be reduced.

Containing aluminum powder coatings, which the same as the ordinary pigmented powder coatings, as long as do not exceed the prescribed limit, there is no fire and explosion hazard. In order to ensure the safety of the spraying process, there must be avoided aluminum powder separated, accumulated and concentrated in the factory. These basic requirements also apply in solvent-based coatings which containing copper alloy powder. However, the explosion risk directly caused by copper-zinc alloy powder is smaller than aluminum powder.

Powder equipment, the most important is that all the parts and the operators must have a good ground connection. Indoor dust concentration should be controlled at the lowest level, use exhaust system according to the requirements. In any case, avoid open flames, sparks and hot surfaces.