Abstract:
An alloy wheel is formed having a three dimensional configuration defining a face and recessed surfaces. The face of the wheel is machined providing a smooth surface at the face and defining an edge between the smooth surface of the face and the recessed surfaces. A nozzle element for projecting a plasma jet toward the wheel is provided. The plasma jet is projected toward the smooth surface of the face, the edge, and toward at least a portion of the recessed surfaces forming an alloy oxide at least on the face and the edge disposed between the face and the recessed surfaces. A first polymeric coating is applied over the face, the recessed surfaces and the edge disposed between the face and the recessed surfaces.
Abstract:
Apparatuses and processes for forming powder are disclosed. The apparatus includes a chamber having a head plate and an array of aerosol and burner nozzles attached to the head plate for generating aerosols and flames respectively. Powder is produced by atomizing a liquid composition to project an aerosol of droplets into the chamber and heating the aerosol with flames projected by the burner nozzles.
Abstract:
The present invention is directed to an apparatus for directing steam, hot water or hot water vapor and hot air onto a target area, the apparatus comprising a water container (20) and a fuel container (32) connected and supplying water and fuel to an applicator wand (16) with an applicator head (46) which generates steam and heat for application adjacent to the target area of application to the unwanted vegetation. Steam is generated immediately adjacent to the target area within the applicator head and combined with surplus heat from the steam generation process to produce heated steam and water vapor for application to the target area. In a preferred embodiment of the invention, the applicator wand is hand held, the applicator head having an inlet, an outlet and a body therebetween, the water and fuel being supplied to a steam generator (74) and burner (62) within the body of the applicator head which generates steam and hot air adjacent to the target area for application through the outlet to the target area.
Abstract:
A combustion chemical vapor deposition apparatus (100) having a manifold (116) into which a liquid (211) is pumped into by pump (213) through flow equilization tubes (206). The liquid (211) is sprayed through an array of spray nozzles (104). Combustible gas is provided through nozzles (114) and oxygen is supplied through orifices (106). The manifold is heated by heating element (202).
Abstract:
The present invention relates to a process and device for the thermal spraying of powdered, rod or wire spray additives, preferably for high-speed powder flame coating using gaseous and/or liquid fuels and plasma powder flame coating. The wire, powdered or rod spraying additive is taken into a gas-oxygen flame or a high-energy arc for melting and acceleration and the plastic or liquid and accelerated spraying additive coming from the burner (1) with its surrounding flame is separated, after a travel of the flame over an adjustable time and distance, in such a way that the molten spraying additive is taken through a spatially defined central channel (2) and impinges as far as possible without being surrounded by the flame on the substrate (35) to be coated, whereby the time and/or point of separation of the components are variably adjusted. This is achieved by a flame stopper (19) of the invention which is arranged on the burner (1) concerned and has a central channel (2) which receives the stream (33) emerging from the burner (1) while the flame surrounding the stream (33) is deflected by a heat shield (7). To prevent the oxidation of the highly reactive spraying additives, the stream (33) separated from the flame is surrounded by a protective gas, e.g. argon, helium or equivalent protective gases, possibly with oxygen-extracting forming gases or pure hydrogen.
Abstract:
A surface treatment device with a robust nozzle configuration. The device comprises a nozzle (140) for ejecting a primary stream (142) of combustible substance to a gaseous atmosphere in an ejection direction (144); means for igniting the primary stream (142) in a point of ignition; and an impermeable shield (160) providing a planar surface (150) that is substantially opposite to the ejection direction and has in front of the nozzle a hole (154) that allows passage of the primary stream (142). The shield is positioned between the nozzle (140) and the point of ignition of the primary stream. The shield is advantageously dimensioned to allow simultaneous passage of the primary stream (142) ejected from the nozzle (140) and a circumferential secondary stream (156) of gas from the gaseous atmosphere via the hole.
Abstract:
The present invention is directed to an apparatus for directing steam, hot water or hot water vapor and hot air onto a target area, the apparatus comprising a water container (20) and a fuel container (32) connected and supplying water and fuel to an applicator wand (16) with an applicator head (46) which generates steam and heat for application adjacent to the target area of application to the unwanted vegetation. Steam is generated immediately adjacent to the target area within the applicator head and combined with surplus heat from the steam generation process to produce heated steam and water vapor for application to the target area. In a preferred embodiment of the invention, the applicator wand is hand held, the applicator head having an inlet, an outlet and a body therebetween, the water and fuel being supplied to a steam generator (74) and burner (62) within the body of the applicator head which generates steam and hot air adjacent to the target area for application through the outlet to the target area.
Abstract:
A method and a liquid feeding device for feeding liquid in a flame spraying apparatus that is arranged for treating an optical fibre structure, as well as a flame spraying apparatus in which liquid feeding is arranged according to the invention. Liquid is supplied to an unpressurized space in a pressure generating part (1) substantially in a constant flow. In the pressure generating part (1) the pressure of liquid is generated by means of gravity influencing the liquid, and the pressurized liquid is arranged to be supplied to the flame spraying at a substantially constant pressure and at a constant flow rate.
Abstract:
A coating applicator element for use in a thermal spray coating process is described. The element comprises a coating powder and a non-gaseous propellant, and optionally a plasma generating device. There is also described an apparatus for thermal spray coating a target which apparatus comprises a barrel, an ignition assembly, storage and feeding means for the coating applicator elements, and means for connection to a power supply.