THERMAL SPRAYING DEVICE AND THERMAL SPRAYING METHOD

摘要

PURPOSE:To easily execute simultaneous spraying of powder materials varying in m.p. by providing a thermal spraying device with particle charging ports in positions determined from the m.p. of the powder materials varying in m.p. and the temp. distribution of a plasma jet flame. CONSTITUTION:An arc 3 is generated between an anode 1 and a cathode 2 and a working gas 4 is heated to eject the jet flame 5 of a high temp. from the nozzle part 1a of the anode 1. Plural pieces of the powder material supplying ports 8-i (i=1 to m(m kinds >= 2)) are arranged in the positions Z-i(i=1 to m) determined from the m.p. of the powder materials 7-i (i=1 to m) and the temp. distribution of the jet flame 5 at equal angular intervals (2pi/n; (n) is a number of pieces) by holding the jet flame 5 therebetween. The m-kinds of the powder materials 7-i are charged through the powder material supplying ports 8-i by the carrier gases 6-i (i=1 to m) into the jet flame 5, by which these materials are melted. Formed liquid particulates 9-i are bombarded at a high velocity against the surface of a surface material 10, by which flat particles 11-i are laminated thereon and the films 12 are formed.