| 摘要 |
PROBLEM TO BE SOLVED: To enhance the processing efficiency of powder jet processing by uniformizing the concentration of the powder in the powder jet nozzle using an oblong nozzle. SOLUTION: A powder supply belt 16 having recessed parts such as grooves, holes or the like provided to the outer periphery thereof is arranged in close vicinity to the powder jet nozzle 20. A powder bed 12 having a powder charged therein so as to come into contact with a part of the outer periphery of the powder supply belt 16 and the flow of the gas flowing to the powder jet nozzle are provided to a part of the outer periphery of the powder supply belt 16 and the powder supply belt 16 is moved in one direction to take out the powder charged in the recessed parts 11 of the powder supply belt 16 by the flow of the gas flowing to a part of the outer periphery of the powder supply belt and the powder is ejected from the powder jet nozzle to perform powder jet processing good in processing efficiency in jet concentration optimum to jet processing.
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