| 摘要 |
PURPOSE:To form a densely thermally sprayed film by increasing the temp. of the liquid drops of a thermal spraying material coexisting in the plasma flame ejected from a plasma torch to a high temp. and increasing the flow velocity thereof. CONSTITUTION:Carbon dioxide, oxygen or air 6 is supplied to an arc 15 generated between cathode 3 and anode 4 of a double torch type plasma thermal spraying device to form the plasma flame 23 and the powdery thermal spraying material 20 is supplied to this plasma flame 23, by which this material is fluidized together with this plasma flame 23 and is melted therebetween. The temp. thereof is thus increased and the speed is increased to bring the melt thereof into collision against a base material 25 for thermal spraying. |
