In mechanical components subjected to high stresses, it is stated subjecting them to non-destructive testing prior to application of the coating. This is due to detect possible faults or defects that can reproduce the layer, broken rice, for example, a steel can not be repaired by the method of metallization.
In the electric arc process or air and spray, the electric arc is obtained in a spray nozzle where two wires come from the deposition material. Leads to a differential potential by opening the electric arc that melts the wires. A mechanical or electrical wires continually pull the same time a strong jet of compressed air is directed in the region spraying the molten metal against the workpiece surface.
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