| 摘要 |
PURPOSE:To form the whole clad layer in almost uniform thickness by melting the clad layer formed by a laser beam by heating it by an arc equipment. CONSTITUTION:A TIG arc equipment 6 is provided at the downstream side of a laser beam 2. Clad layers 51-55 are formed by irradiating the laser beam 2 by feeding the powder 4 of, for instance, a 'Hastelloy(R)' C, etc. from a powder feeding nozzle 3 by turning in a clockwise direction a steel pipe 1. And, when the clad surface is melted by heating it with a TIG arc 8 after forming, a melt run zone 9 is formed. Consequently the step part of the clad layer 51-55 is eliminated and the clad layer in almost flat and uniform thickness can be formed. |
