"Plasma Spray Coating Method"

Abstract: A thermal spraying method in which masking operation on the surface of a spray object can be facilitated and in which a test piece can be fixed securely so as to enable setting of spray conditions . There is disclosed a thermal spraying method of performing a thermal spraying of heat shield coating material on the surface of a metal as a constituent of heat resistant equipment to thereby form a heat shield coating layer. The thermal spraying method is characterized by including the step of forming a coating layer of heat resistant resin on the whole spray area of the metal surface, securely fixing a test piece of the same material as that of the metal as a constituent of heat resistant equipment on the surface of the coating layer, spraying a heat shield coating material onto the test piece, detaching the test piece from the surface of the coating layer, inspecting the condition of spray and setting spray conditions; and the step of removing the coating layer and under the above set spray conditions, spraying the heat shield coating material onto the metal surface to thereby form a heat shield coating layer.

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