Abstract: A thermal spraying method includes 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, 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.

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.