- 업종: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who tends battery of molten carbonizing salt bath or ammonia-methane furnaces that case harden steel objects, such as buckles, screws, wrenches, and bicycle crank cups. Respnsibilities include:
* Loads objects by hand into wire basket attached to steel-rod handle.
* Immerses basket into chemical bath inside furnace pot or into ammonia-methane furnace.
* Scoops salt into furnace pots to maintain bath level or opens valves to inject gases into furnace, and sets timer.
* Removes basket from furnace at end of heating cycle and dumps objects into mesh container submerged in tank of quenching oil.
* May lift container from quenching tank and dip container in rinse water.
* Dumps objects into box or tray.
* May signal forklift operator to deposit or extract containers of objects into and from furnaces and quenching and rinse tanks.
Industry:Professional careers
A professional who tends gas oven that heats lawnmower blades preparatory to bending. Respnsibilities include:
* Places cold blade on furnace apron and presses pedal to raise furnace door.
* Positions blade in slotted rack on furnace bed, using tongs.
* Removes blade from furnace after specified time.
* Lubricates bending machine, using grease gun.
Industry:Professional careers
A professional who assists charger operator in moving steel blooms, billets, and slabs through soaking-pit furnace. Respnsibilities include:
* Straightens steel on furnace skids and roller conveyor, using bar.
* Places separators between steel shapes and marks identifying information on shapes.
* May cut, transport and store trial bars in bins.
* Performs other duties as described under helper master title.
Industry:Professional careers
A professional who assists furnace operator by performing any combination of following duties. Respnsibilities include:
* Seals furnace opening with fire clay and firebrick, using paddle and shovel.
* Charges furnace with materials, such as scrap, ore, flux, reagents, slimes, oxides, pellets, or coke, by moving levers to open bin or hopper gates, by shoveling, or by signaling furnace charger or overhead crane operator to load furnace.
* Turns valves to force air through tuyeres into molten metal to oxidize impurities.
* Observes gauges and manipulates controls on panel to admit nitrogen to prevent igniting of magnesium.
* Stirs molten metal with green poles to prevent copper from oxidizing.
* Skims slag from molten metal, using bar, rabble, or ladle.
* Cleans slag from tuyeres to let air flow, using bar, hammer, or pneumatic drill.
* Signals overhead crane operator, or uses electric hoist, to position ladles or buckets near furnace, and moves levers to tilt furnace into pouring position.
* Scrapes and chips slag, solidified metal, furnace lining, and residue from furnace, using hammer, chisel, and scraper.
* Breaks condensers and defective retorts with sledgehammer for removal to crusher.
* Raps flues and dust catchers with bar to remove dust.
* Performs other duties as described under helper master title.
Industry:Professional careers
A professional who assists hardener in hardening and tempering watch parts, maintaining flow of work into and out of department, and cleaning and packaging finished work.
* Performs other duties as described under helper master title.
Industry:Professional careers
A professional who heat treats jewelry fittings to soften fittings for further processing, using electric or gas furnace. Respnsibilities include:
* Sets automatic controls to specified temperature.
* Fills steel tray with fittings and places fittings in oven, using tongs.
* Removes tray after specified time and immerses fittings in water.
* May clean oxide and scale from fittings by immersing fittings in chemical and water baths.
* May heat treat ingots, using Bunsen burner or torch, and immerse ingots in alcohol to restore ingot malleability.
* May open and close gas valves, ignite and extinguish gas flames, and set time clock alarm for heating and cooling periods.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in spraying protective metal coatings on metal to prevent corrosion and to build up surfaces of worn or damaged metal parts. Respnsibilities include:
* Analyzes work orders, workpieces, and blueprints to determine process, materials, and sequence of operations required to coat metal.
* Sets up machine tools and metal spray guns to perform special or experimental operations.
* Trains workers in operation of equipment.
* Examines finished pieces for conformity to specifications.
* Directs workers in processes, such as degreasing, sandblasting, welding and brazing, metal spraying, and machining.
* Inspects malfunctioning of machines and equipment to determine need for repair.
* Performs other duties as described under supervisor master title.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in vacuum metalizing of glass, plastic, or metal objects, applying knowledge of vacuum metalizing processes, equipment, and procedures. Respnsibilities include:
* Computes time and pressure specifications for vacuum-metalizer operators.
* Observes operations to detect malfunction.
* Sets up and operates equipment to perform experimental work.
* Trains workers in operation of equipment.
* May insert filaments into holders on rack, fill oil tanks of pumps, and examine gauges for malfunction to prepare vacuum metalizing equipment for operation.
* May position spray nozzles and turn knobs to synchronize conveyor speed, electric-eye action, and temperature and blower action of drying oven to set up automatic spray-painting equipment.
* May repair and maintain tools and machinery.
* Performs other duties as described under supervisor master title.
Industry:Professional careers
A professional who sets up and operates flame-spray equipment and machine tools to build up worn parts, such as crankshafts, motor shafts, clutch plates, and piston rods, and to salvage defective machined parts, according to specifications. Respnsibilities include:
* Washes object with solvents, or heats object with torch or in furnace to remove impurities, such as grease or paint.
* Operates machines, such as engine lathes and external grinders, to undercut or groove surface of object.
* Cleans and roughens surface of object in sand or shotblast cabinet 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:
* (1) 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, such as 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.
* (2) Pours specified powder of metal or other material, such as 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, such as 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 operate machines, such as engine lathes, turret lathes, or precision grinders, to machine-coat objects to original specifications.
* May spray protective coatings of corrosion-resistant metal onto metal objects.
* 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.
* May be designated according to type of metalizing equipment used as Thermospray Operator.
Industry:Professional careers
A professional who sets up and operates metal spraying machine to bond protective or decorative coatings to metal objects. Respnsibilities include:
* Positions workpieces into holding fixtures of conveyor.
* Attaches nozzle onto spray gun and positions gun at specified distance from workpiece.
* Connects hoses from gun to air compressor and fuel tanks.
* Threads end from roll of specified wire through gun.
* Turns knobs and levers to synchronize speed of wire feed, air pressure, and specified flow of oxygen and fuel.
* Turns knobs and installs gears to set conveyor speed and holding device.
* Ignites gun to melt emerging wire at nozzle and presses button or turns handle to release compressed air which atomizes and sprays molten metal onto surface of workpiece.
* Inspects workpieces for coating defects and removes finished pieces from conveyor.
* May install gears to accommodate larger workpieces.
* May operate sandblasting equipment to roughen and clean surface of workpieces.
* May preheat workpieces in oven.
* May be designated according to type of equipment used as Metal-Spraying-Machine Operator, Crucible Gun.
Industry:Professional careers
