How thermal spray works

       Depending on the heat source used in thermal spraying and the state of the sprayed material.

Arc spraying is a method in which an arc is generated between two continuously fed metal wires connected to the positive and negative electrodes of the power supply, and the heated molten part is atomized by a compressed air jet and sprayed onto the substrate to form a coating. Since this method is only suitable for spraying wire, it is also called arc wire spraying.

1. Features



(1) The spray material must be a conductive material.



(2) The arc temperature is lower than the plasma temperature, but higher than the oxyacetylene flame temperature. The compressed air pressure of the atomized wire can be higher, so the spray layer is denser.



(3) Since the two wires are fed at the same time, the spraying efficiency is high.