초록 ▼

A thermal spray system includes a combustion unit connected to at least one port for supplying a flow of a combustible fluid from an external source of fuel and oxidant. The combustion unit includes a permeable burner block constructed to receive said combustible fluid from and to generate a high-en

A thermal spray system includes a combustion unit connected to at least one port for supplying a flow of a combustible fluid from an external source of fuel and oxidant. The combustion unit includes a permeable burner block constructed to receive said combustible fluid from and to generate a high-energy stream of gas. The thermal spray system also includes an exhaust nozzle constructed to direct the high-energy stream of gas toward a substrate, and a material delivery unit constructed to deliver a material into the high-energy stream of gas to form a highly energized stream of particles. When the thermal spray system is used for bead blasting, the provided material is an abrasive material. Alternatively, when the thermal spray system is used for coating a substrate, the provided material is a coating material. The material delivery unit may be an injector or an electric arc unit. Instead of the combustion unit burning the combustible fluid, the thermal spray system may include a source of a high-pressure preheated gas such as a plasma source or an electric heat exchange source.

대표청구항 ▼

[ We claim:] [1.] A thermal spray system for coating a substrate with a material comprising:a combustion unit connected to at least one port constructed to supply a flow of a combustible fluid from an external source of fuel and oxidant, said combustion unit including a permeable burner block includ

[ We claim:] [1.] A thermal spray system for coating a substrate with a material comprising:a combustion unit connected to at least one port constructed to supply a flow of a combustible fluid from an external source of fuel and oxidant, said combustion unit including a permeable burner block including an upstream surface and a downstream surface;said permeable burner block constructed to receive said combustible fluid, formed by a mixture of said fuel and said oxidant, at said upstream surface and to pass said combustible fluid in a plurality of orifices toward said downstream surface, said burner block being arranged to heat, ignite and burn said combustible mixture adjacent to said downstream surface including inside said orifices to generate an energized stream of gas;an exhaust nozzle constructed to receive said stream of gas and direct said stream of gas toward a substrate; anda material delivery unit constructed to deliver a selected material into said energized stream of gas to form a energized stream of particles.