What is thermal spraying zinc introduced by supersonic spraying manufacturers

       The main equipment for thermal spray zinc is compressed air system, oxygen, acetylene system, metal spray gun and hose. The following supersonic spraying manufacturers will introduce its related content to you.



How it works:



Powered by compressed air in the spray gun. Driven by the driving device, the zinc wire becomes a melt through the nozzle, atomized into particles by compressed air, and sprayed onto the workpiece to form a thermal spray zinc protective layer. Due to the uneven surface of the substrate after sandblasting, the metal coating after heat dissipation and shrinkage can be firmly attached to the surface of the workpiece.

Spraying requirements:



1. The purity of zinc wire used for metal spraying shall not be lower than 99.99%.



2. The zinc wire should be smooth, rust-free, oil-free and crease-free, with a diameter of 2.0-3.0mm.







Spraying process requirements:



1. The compressed air used for spraying should be clean and dry, and the pressure should not be lower than 0.4MPa.



2. The spraying distance is 100-200mm, and the spray gun should form a right angle with the surface of the substrate as much as possible, and should not be lower than 45°.



3. The moving speed of the spray gun should be 25-80µm thick at one time.



4. There should be 1/3 of the width overlapping between the spraying belts, and the thickness should be as uniform as possible.



5. The direction of the spray guns between the spraying layers should be perpendicular to each other to cross coverage.



6. When the surface temperature of the coating drops below 70°C, the next layer of spraying is carried out.