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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||427/446 ; 427/450 ; 427/456|
|발명자 / 주소||
|인용정보||피인용 횟수 : 57 인용 특허 : 9|
A method of operation of a plasma torch, an internal burner or the like to produce a hot gas jet stream directed toward a workpiece to be coated by operating the plasma torch or internal burner at high pressure while feeding a powdered material to the stream to be heated by the stream and projected at high velocity onto a workpiece surface. The improvement resides in expansion of the hot gas prior to feeding of the particles into the jet stream thereby limiting the heating of the powdered material by the jet stream to that only sufficient to raise the te...
In a thermal spray method comprising the steps of: continuously combusting a fuel and oxidant under pressure within a restricting volume of a combustion chamber and expanding the products o combustion of said fuel and oxidant as gas into an extended nozzle having a throat opening to said combustion chamber and producing at least a sonic flow stream of gases from an said extended nozzle to produce and direct a supersonic jet of said gases toward a workpiece surface to be coated; feeding a powdered material to said stream to be heated b said stream and pro...