Abstract:
A safety burner for spraying metal powder in the molten state is provided comprising a burner body and a powder supply device formed of a carrier part firmly connected to the burner body and having an intermediate part removably attached to the carrier part, the intermediate part having means for detachably coupling a powder container thereto and also having a powder shutoff device cooperably associated therewith, the intermediate part and the carrier part being arranged one to the other such that the intermediate part can be removed from the carrier part only when the powder shutoff device is closed. The burner also includes gas flow conduits within it for conveying combustible gas and an oxidizing gas and powder-carrier gas therethrough. The burner body contains a first combustible gas-oxidizing gas injector and a second powder-carrier gas injector, the first injector being coupled to the combustible gas-oxidizing gas conduit and the second injector being coupled to the powder-carrier gas conduit. A gas-shutoff device is provided coupled to the gas-flow conduits.
Abstract:
A device for marking workpieces by means of powder includes a nozzle from which emanates a powder spray circumscribed by a heating flame with a burner being at one end of the nozzle attached for powder marking and whose other end is attached to a powder container connected to the nozzle via a tube.
Abstract:
A flame spray powder mix is provided for producing metal coatings on metal substrates, such as ferrous metal substrates, e.g. steel, cast iron, among other metal substrates, the powder mix comprising agglomerates of at least one metal silicide, e.g. titanium disilicide, homogeneously mixed with a coating metal powder, such as nickel powder. The mix may additionally contain agglomerates of silicon powder with the coating metal powder making up the major portion of the powder mix.
Abstract:
An improved nozzle is provided for a metal spraying torch, said nozzle comprising a hollow cylindrical body having a substantially conically shaped nose terminating into a tip and a plurality of gas-conducting orifices communicating with the hollow of said nozzle and passing substantially axially through the nose of said nozzle, for example, coaxially parallel or conically disposed relative to the axis of the nozzle, and emerging from the conical surface thereof short of the tip. The orifices are radially disposed about the axis of said nozzle with the terminal portions thereof lying in a circle when observed from the tip end. An advantage of the nozzle is that it provides a quieter flame and also avoids flashback when the tip thereof makes contact with a workpiece.
Abstract:
Briefly, the disclosure relates to a powder metal-spraying torch which utilizes a gravity powder feed arrangement that maintains reasonably uniform powder spray rates for powders with varying characteristics. Additionally, the metal-spraying torch is arranged to control the spray pattern shape and density as well as the relationship of the fed powder to the flame.
Abstract:
A thermal spray device for applying powder and polymer coatings, to large areas by means of a staged double or triple Venturi oriented at the distal end to produce a compression wave is described. The spray patterns produced by the nozzles can range from about three inches to about nine inches. The gun is designed so that the front-end nozzles are interchangeable with other front-end nozzles so as to allow for quick changes between nozzles designed to cover different coverage areas. The lightweight compact design allows for comfort and high portability.