Matches 151 - 200 out of 268 < 1 2 3 4 5 6 >
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5021629 Electric plasma arc powder welded slide layer for rotary fluid pump vane  
A vane for a rotary fluid pump and a method for producing the vane are disclosed. The vane has a base vane body and an overlaid welding layer which functions as a sliding layer. The sliding layer...
5014915 Apparatus for the flame spraying of powder materials by means of an autogenous flame  
An apparatus for the flame spraying of powder materials by means of an autogenous flame comprising a nozzle carrier which has a burner nozzle and which projects into a guide opening of a preferably...
5013883 Plasma spray device with external powder feed  
The front face of the nozzle of a plasma spray device has a shallow annular recession therein. The recession is bounded inwardly by an extended portion of the nozzle, outwardly by a ring member and...
5008511 Plasma torch with axial reactant feed  
A plasma torch incorporated at plurality of arc forming chambers arranged symmetrically about an axis and each containing a first electrode. A common electrode cooperates with the electrode in each...
4992337 Electric arc spraying of reactive metals  
An improved electric arc spray process for the deposition of reactive metals is disclosed which utilizes compressed inert gases for atomization. The improved process utilizes argon, nitrogen,...
4990739 Plasma gun with coaxial powder feed and adjustable cathode  
An improved plasma gun coaxially injects particles of ceramic materials having high melting temperatures into the central portion of a plasma jet. This results in a more uniform and higher...
4982067 Plasma generating apparatus and method  
The plasma generating apparatus and method of this invention is particularly, although not exclusively, suitable for plasma spraying. The plasma spray apparatus and method of this invention...
4970364 Method of coating internal surfaces of an object by plasma spraying  
A plasma spray torch comprises a spray nozzle which forms an electrode and which includes a nozzle duct, and a second electrode associated therewith, in a portion of a torch arm which is...
4964568 Shrouded thermal spray gun and method  
A powder or wire thermal spray gun, useful for spraying a low oxide coating of oxidizable material, comprises a nozzle member with a nozzle face, and a gas cap extending from the nozzle member and...
4943698 Hardfacing powders  
The occurrence of porosity in hardfacing deposits produced by plasma transferred arc welding is significantly reduced by blending a porosity reducing agent preferably aluminum and/or manganese,...
4928879 Wire and power thermal spray gun  
A thermal spray gun, for spraying wire and powder simultaneously at high velocity to produce a dense and tenacious coating, comprises a nozzle and a gas cap extending from the nozzle. Combustible...
4924058 Powder recharging apparatus, especially for a coating apparatus operating in a vacuum chamber  
In a powder recharging apparatus for a low-pressure plasma spraying system having a powder magazine with a fill pipe (22) at its bottom and a powder feeder (32) cooperating with the magazine (23)...
4916273 High-velocity controlled-temperature plasma spray method  
A surface discontinuity is formed along an anode nozzle bore sufficiently upstream of a nozzle exit orifice and of a sufficient size to cause an arc between an electrically conductive end wall of a...
4911805 Apparatus and process for producing a stable beam of fine particles  
An apparatus for controlling a flow of fine particles is provided which comprises a convergent-divergent nozzle in a flow path of the fine particles. The nozzle may be operated under an optimum...
4909914 Reaction apparatus which introduces one reacting substance within a convergent-divergent nozzle  
A reaction apparatus is provided which comprises a flow control system provided with a convergent-divergent nozzle. This nozzle is operated under the optimum expansion condition, and the...
4902870 Apparatus and method for transfer arc cleaning of a substrate in an RF plasma system  
An RF plasma gun has a metal annular support ring at the gun's nozzle exit port. The ring is conductively mounted to a metal tank containing a substrate to be processed. The substrate is connected...
4901921 Particle injection device for thermal spraying  
There is described a method and an apparatus wherein particles and a carrier gas are injected under pressure into a plasma flame. The particles are completely melted and are theraefter propelled...
4886202 Method of making metal matrix monotape ribbon and composite components of irregular shape  
A method of fabricating irregular shapes wrapped with metal matrix composite monotape utilizing a cylindrical deposition drum wrapped with a spiraling array of evenly spaced strands of high...
4877937 Plasma spray torch  
A plasma spray torch comprises a spray nozzle which forms an electrode and which includes a nozzle duct, and a second electrode associated therewith, in a portion of a torch arm, which is...
4877938 Plasma activated deposition of an insulating material on the interior of a tube  
In the internal coating of a tube of an electrically insulating material by a second electrically insulating material by reactive deposition of the second electrically insulating material from a...
4866241 Plasma spray apparatus for coating irregular internal surfaces  
An apparatus for coating the internal surface of a tubular object having an irregular internal surface which comprises a combination of arms which enable the torch to be in the optimal coating...
4866240 Nozzle for plasma torch and method for introducing powder into the plasma plume of a plasma torch  
Apparatus and method are disclosed for introducing powder into a stream of plasma generated in a plasma torch such as a plasma transferred arc torch. The nozzle of the torch has a central base...
4853515 Plasma gun extension for coating slots  
A plasma gun for spraying in a recessed region comprises a cathode member and a tubular anode arranged with the cathode member to generate a plasma stream. An elongated tubular extension including...
4836447 Duct-stabilized flame-spray method and apparatus  
A flame-spray duct defined by the portion of a bore passing through a flame-spray body at the outlet end thereof having a duct L/D ratio of at least 5-to-1 is associated with elements within the...
4820900 Vacuum plasma spray system with sealed manipulator  
A vacuum plasma spray system includes a spray chamber, a motor-driven manipulator including a drive mechanism and a respective control system, and a plasma gun mounted on the manipulator in the...
4818837 Multiple arc plasma device with continuous gas jet  
A multiple cathode DC arc plasma generator arrangement is used in connection with a single anode for thermal arc plasma processing of materials. A nozzle is provided to introduce a gas in...
4788402 High power extended arc plasma spray method and apparatus  
A high voltage, high current is applied between a cathode electrode and a conductive body forming a spray nozzle and acting as a second anode electrode aligned with the first electrode and being...
4766284 Production of compounds by reaction of solid materials at high temperatures produced by plasma arc torches  
Reactions between solid materials to form useful products, for example, strontium ferrites, are effected by heating a primary solid feed material with a plasma gas stream to melt the primary feed...
4762977 Double arc prevention for a transferred-arc flame spray system  
A method and apparatus for reliable flame spraying utilizes a transferred arc from a plasma torch as created between the cathode electrode coaxial with the plasma torch nozzle and the end of at...
4745256 Narrow substrate having weld bead of powdered metal  
The welding method may be used to lay down weld beads on metallic substrates with a narrow width of 0.125 inch and less. The process employs a plasma transferred arc and pulses the current...
4739146 Method for applying a weld bead to a thin section of a substrate  
The welding method is used to lay down weld beads on metallic substrates with a thin section, e.g., of down to 0.030 inch. The process employs a plasma transferred arc which is generated at low...
4694990 Thermal spray apparatus for coating a substrate with molten fluent material  
Thermal spray apparatus for providing a stream of molten fluent material for coating a substrate, including a heat source including a flame for producing a stream of heated gas heated to...
4689468 Method of and apparatus providing oxide reduction in a plasma environment  
In a plasma spraying system in which a main plasma gun electrically coupled to a workpiece or target and equipped with apparatus for introducing a spray powder therein provides a plasma stream to...
4675205 Surface treatment of a part and use of this treatment for improving the adhesion of a coating which is then deposited on the part, particularly by hot spraying  
A process for the surface treatment of a part wherein it comprises subjecting the surface of said part in an inert atmosphere to the action of a hot gaseous arc plasma, and followed by the...
4661682 Plasma spray gun for internal coatings  
In a plasma spray gun (1) including a cooled electrode (10) and burner nozzle (12) for insertion in pipes and bores of work pieces and for coating the inner surfaces of these work pieces, for the...
4656331 Infrared sensor for the control of plasma-jet spray coating and electric are heating processes  
A multi-purpose optical sensor operates in the medium-to-far infrared wavelength spectral region to sense the surface temperature of plasma-jet spray coating materials. This plasma itself emits...
4649858 Repairing apparatus for furnace wall  
This invention relates to a repairing apparatus for an industrial furnace wall using a plasma spray gun. The plasma flame of the gun traces the damaged part to be repaired by moving the gun in...
4642440 Semi-transferred arc in a liquid stabilized plasma generator and method for utilizing the same  
A plasma generator arrangement for applying material to an electrical conductive substrate and method for utilizing the same. The generator arrangement comprises a generator for creating and...
4627990 Method of and apparatus for supplying powdery material  
A method of and an apparatus for supplying a powdery material to a workpiece to be processed thereby. According to the method, the powdery material is discharged from a hopper and metered, and then...
4621183 Powder surface welding method  
A powder surface welding method using a plasma torch is disclosed, which uses a surfacing powder containing not less than 95% of particles having a particle size of -60 mesh to +250 mesh. This...
RE32244 Methods and apparatus for applying wear resistant coatings to rotogravure cylinders  
A coating of wear resistant tungsten carbide is applied to a photo-etched roto-gravure cylinder, the coating having a thickness in the range of from 15 to 35 microns. Tungsten carbide powder is...
4606929 Method of ionized-plasma spraying and apparatus for performing same  
The disclosed method of ionized-plasma spraying includes the steps of loading an article to be coated into a vacuum chamber, pumping out active gases from the vacuum chamber to a pre-evacuation...
4604306 Abrasive blast and flame spray system with particle entry into accelerating stream at quiescent zone thereof  
A high velocity gaseous jet stream which may be a cold jet stream of compressed air or a jet flame discharging from an internal burner discharges through an open slot V-shaped, U-shaped or...
4596718 Vacuum plasma coating apparatus  
A vacuum plasma coating apparatus comprises a plasma torch arranged in a low pressure chamber and displaceable along a plurality of axes relative to the part to be coated and a device for moving...
4565618 Apparatus for producing diamondlike carbon flakes  
A vacuum arc between a spot 42 at the face of a graphite cathode 30 and a graphite anode 32 produces a beam 28 of carbon ions and atoms. This beam deposits a carbon coating on an ion beam sputtered...
4563566 Method of manufacturing particles having high surface areas and a particle made by the method  
A method of manufacturing porous, irregularly-shaped particles having high surface areas and a particle made thereby is disclosed wherein small grains of a material are adhered together to form...
4540121 Highly concentrated supersonic material flame spray method and apparatus  
Particulate material, which may be heat softened or liquified, or which may remain solid, is fed outside of an electrical heating zone for electric arc heating under pressure a continuous flow of...
4540868 Plasma gun that reduces cathode contamination  
In order to avoid contamination of a bombarding plasma jet by the products f cathode erosion in a plasma gun having a cathode and an anode, with which a connecting plasma is produced which strikes...
4536640 High pressure, non-logical thermal equilibrium arc plasma generating apparatus for deposition of coatings upon substrates  
An apparatus for deposition of coatings upon substrates generates a non-local thermal equilibrium arc plasma at the relatively high pressure of at least approximately 1 atmosphere. A closed chamber...
4512867 Method and apparatus for controlling plasma generation in vapor deposition  
Vapor deposition coating can be performed in apparatus in which a plasma of the coating material is generated from the surface of an electrode. The surface area of the electrode from which the...
Matches 151 - 200 out of 268 < 1 2 3 4 5 6 >