| 摘要 |
PROBLEM TO BE SOLVED: To provide a posttreating method for improving the adhesive strength of sprayed coating film without applying thermal influence and thermal deformation to a stock. SOLUTION: As for the sprayed coating film of an Ni base alloy, Co base alloy, Fe base alloy or the like with 0.5 to 1mm thickness formed on the surface of the stock, the region from the surface of the coating film to the boundary between the stock and coating is melted under heating by an electron beam in such a manner that the oscillation width of the beam is regulated to 5 to 20mm, the output of the beam is regulated to 4.0 to 10.0kW, the beam mode is composed of chopping waves or sine waves, the frequency is regulated to 500 to 50000Hz, the treating rate is regulated to 100 to 2000mm/min, and the focus degree is regulated to >=±50mm.
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