Patent ID: 6913207

Claim:
A thermal spraying apparatus for producing a thermal sprayed layer by heating material for thermal spraying, by flying the heated material or the heating material to a surface of an object, and by piling the heated material on the surface of the object, comprising: a passage-forming member for forming a passage through which a material for thermal spraying passes; a heating means for heating the material passing through the passage-forming member or discharged from the passage-forming member; and a speed-increasing means for adding energy to the material for thermal spraying to increase a flying speed of the material and to accelerate the flying speed of the material; wherein the speed-increasing means increases the flying speed of the material by using a swelling gas pressure obtained by expanding gas or by evaporating liquid; and wherein the speed increasing means includes at least one speed increasing means selected from the group consisting of: a laser apparatus for discharging a laser beam, and increasing the flying speed of the material by discharging the laser beam into liquid to generate the swelling gas pressure; and a gun having a high pressure room, a gas-storing division for storing gas, a compressor connected with the gas-storing division for compressing the gas supplied from the gas-storing division, and a pressure amplifier connected with the compressor for amplifying the pressure of the gas compressed by the compressor to supply the amplified pressure to the high pressure room for obtaining a high pressure in the high pressure room for increasing the flying speed of the material.