Machined Parts Metal Sprayer: A description for the machined parts metal sprayer job

Processing Jobs » Jobs In Processing Of Metal » Metal Spraying Coating And Related Jobs » Machined Parts Metal Sprayer

Machined Parts Metal Sprayer: Flame-spray operator, metalizer, machined parts, metal-spray operator Sets up and operates flame-spray equipment and machine tools to build up worn parts, for example crankshafts, motor shafts, clutch plates, and piston rods, and to salvage defective machined parts, according to specifications: Washes object with solvents, or heats object with torch or in furnace to remove impurities, for example grease or paint. Operates machines, for example engine lathes and external grinders, to undercut or groove surface of object. Cleans and roughens surface of object in sand or shotblast cabinet [CABINET-ABRASIVE SANDBLASTER (industry) 503.687-010] or by electrobonding process. Preheats object for spraying, using oxyacetylene torch or metalizing gun. Sprays metal or other material on object by either of following methods: (a) Positions and clamps metalizing gun to engine lathe carriage. Selects nozzle to accommodate size of wire to be sprayed and screws nozzle into place on metalizing gun. Inserts wire to be sprayed into rear of gun and through feed rollers and nozzle. Connects hoses from gun to air compressor and tanks of oxygen and fuel gas, for example acetylene. Turns knobs to synchronize speed of wire feed, air pressure, flow of oxygen and fuel indicated on dials to specifications computed from data charts. Installs gears in lathe and turns knobs to synchronize rotating speed of chuck and movement of carriage with rate of spray to achieve specified coating on workpiece. Ignites gases to melt wire and presses button or trigger to release compressed air which atomizes and sprays molten metal onto workpiece. (b) Pours specified powder of metal or other material, for example ceramics, into hopper mounted on metalizing gun. Selects nozzle according to type of powder to be used and screws nozzle into place on gun. Turns dials and valves to synchronize feeding rate of powder and flow of oxygen and fuel gas, according to type of powder used. Ignites gases and presses button or trigger to start flow of powder which is atomized and sprayed onto workpiece. Heats object with torch or in heat-treating furnace to fuse coatings, and cools object slowly to prevent cracking. Measures object, using measuring instruments, for example micrometers, gauges, and calipers, to determine conformance to specifications. Operates portable metalizing gun to fill cracks, holes, and apply coating to restore flat or irregular surfaces of machined, forged, or cast objects to original dimensions. May also operate machines, for example engine lathes, turret lathes, or precision grinders, to machine-coat objects to original specifications. May also spray protective coatings of corrosion-resistant metal onto metal objects. May also tend portable air compressors, sandblasting guns, and set up metalizing gun on lathes in customers’ plants to repair damaged, worn, or improperly machined parts. May also be designated according to type of metalizing equipment used as Thermospray Operator (industry).

Job industry: industry

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