"METAL SPRAYER, MACHINED PARTS"

Job Description and Jobs

• 4) Preheats object for spraying, using oxyacetylene torch or metalizing gun.

• 5) Sprays metal or other material on object by either of following methods: Positions and clamps metalizing gun to engine lathe carriage.

• 6) Selects nozzle to accommodate size of wire to be sprayed and screws nozzle into place on metalizing gun.

• 7) Inserts wire to be sprayed into rear of gun and through feed rollers and nozzle.

• 8) Connects hoses from gun to air compressor and tanks of oxygen and fuel gas, such as acetylene.

• 9) Turns knobs to synchronize speed of wire feed, air pressure, flow of oxygen and fuel indicated on dials to specifications computed from data charts.

• 10) 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.

• 11) Ignites gases to melt wire and presses button or trigger to release compressed air which atomizes and sprays molten metal onto workpiece.

• 12) Pours specified powder of metal or other material, such as ceramics, into hopper mounted on metalizing gun.

• 13) Selects nozzle according to type of powder to be used and screws nozzle into place on gun.

• 14) Turns dials and valves to synchronize feeding rate of powder and flow of oxygen and fuel gas, according to type of powder used.

• 15) Ignites gases and presses button or trigger to start flow of powder which is atomized and sprayed onto workpiece.

• 16) Heats object with torch or in heat-treating furnace to fuse coatings, and cools object slowly to prevent cracking.

• 17) Measures object, using measuring instruments, such as micrometers, gauges, and calipers, to determine conformance to specifications.

• 18) 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.

• 19) May operate machines, such as engine lathes, turret lathes, or precision grinders, to machine-coat objects to original specifications.

• 20) May spray protective coatings of corrosion-resistant metal onto metal objects.

• 21) May tend portable air compressors, sandblasting guns, and set up metalizing gun on lathes in customers' plants to repair damaged, worn, or improperly machined parts.

• 22) May be designated according to type of metalizing equipment used as Thermospray Operator.

 

 

 

 

 

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