THERMAL SPRAY METHOD AND THERMAL SPRAY APPARATUS

摘要

PROBLEM TO BE SOLVED: To enhance adhesion to the surface to be thermally sprayed of a thermal spray coating.SOLUTION: A thermal spray method comprises: melting a thermal spray wire 3 sequentially sent into a thermal spray gun 1 by an arc; ejecting a molten droplet M forward from an ejection port 5 by a primary gas G1 sent through the thermal spray gun 1 to stick the molten droplet to the surface Ws to be thermally sprayed of a work piece W. In that case, a secondary gas G1 flowing through the thermal spray gun 1 is ejected from the ejection port 5 so as to flow outside the droplet M and the primary gas G1, and the amount of the ejected secondary gas G2 is increased in an area on the front side in a movement direction of the thermal spray gun 1 more than the other area.