A.C. – H.V.A.F. Arc System
Principle of Operation
The HVAF-ARC system produces dense and finely structured coatings from solid and cored wire stock. The TSR300H gun employs an electric arc for wire fusion and HVAF jet for atomization and acceleration of fused particles. The spray head, which is the size of a conventional arc head, includes a toroidal combustion chamber atomizer surrounding wire tips. A hot catalytic insert activates air-fuel combustion and makes it stable within an extremely short chamber. Exhaust gases are directed into the arc zone. The resultant high velocity jet atomizes molten material, accelerates particles, and propels them toward the substrate where they form a coating. This jet is low in oxygen content and protects the liquid metal from oxidation in the arc zone.