- 업종: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who tends vacuum metalizing equipment that deposits decorative or protective coating of specified metal on metal, glass, or plastic objects. Respnsibilities include:
* Hooks or clamps articles onto rack.
* Positions pieces of coating metal over heating filament on rack.
* Positions rack in vacuum chamber, manually or using hoist.
* May plug in electrical connection or filaments.
* Connects gear to motorized jig that rotates rack inside chamber.
* Closes door and turns handles to seal chamber.
* Turns handwheel and starts pump to remove air from chamber.
* Starts booster and high vacuum pumps, and observes dials to obtain specified state of vacuum in chamber.
* Pushes button to heat filament which vaporizes coating metal and deposits it as film on objects on rack.
* Turns off electric current after specified time and turns handwheel to permit air to enter chamber.
* Opens door, removes rack, and lifts coated objects onto truck or dolly.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in mixing and pressing metal powders, and in sintering, coining, impregnating, and inspecting powdered metal products, applying knowledge of powdered metal properties, press and furnace operation, and sintering and impregnating processes.
* Trains workers in setup of machines and equipment.
* May set up briquetting and coining presses and sintering furnaces.
* Performs duties as described under supervisor master title.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in controlling nuclear reactors to produce plutonium and steam. Respnsibilities include:
* Observes panel control board indicators to ensure operation of reactors conforms to government and company safety regulations.
* Analyzes instrumentation data to determine equipment adjustments.
* Trains new workers.
* Performs other duties as described under supervisor master title.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in heating and soaking steel ingots preparatory to rolling in blooming and slabbing mills. Respnsibilities include:
* Prepares schedule for charging and drawing steel into and from preheating and soaking pits.
* Directs workers in charging ingots into pits and in heating and drawing operations.
* Inspects furnaces and equipment to determine necessary maintenance.
* Trains workers in mill operations.
* Performs other duties as described under supervisor master title.
Industry:Professional careers
A professional who operates machine to mix various charges of molten metal and maintain metal at specified temperature for use in converters and furnaces. Respnsibilities include:
* Moves controls to raise lid of mixer and signals overhead crane operator to pour metal from transfer ladle into mixer.
* Turns controls to adjust fuel and air mixture to mixer burners to maintain specified temperature in mixer, and to rotate arm that mixes molten metal.
* Signals overhead crane operator to position ladle for receiving molten metal from mixer for delivery to converters or furnaces.
* Moves controls to tilt mixer and fill ladle.
* Inserts long-handled spoon in ladle to obtain sample of molten metal and pours sample into mold for laboratory analysis.
* Repairs mixer lining, using refractory materials and handtools.
Industry:Professional careers
A professional who operates roll-coating machine and auxiliary equipment to coat coils of sheet metal, flat metal blanks, or fabricated metal parts with paint, vinyl plastic, or adhesive film. Respnsibilities include:
* Positions coiled metal strip on mandrel of feed reel or places metal blanks onto feed carriage of machine.
* Feeds coils of sheet metal into take-up rolls of stitching machine.
* Starts stitching machine that staples strips together to form endless metal strip.
* Turns control dials of machines to regulate speed of metal strip, temperature of drying ovens, and flow of chemicals that maintain specified viscosity of solutions in cleaning tanks.
* Mixes paint or coating solution to specified viscosity and starts equipment to pump mixture into machine reservoir.
* Turns setscrews to adjust distance between coating rollers that control thickness of coating.
* Measures thickness of coating to test viscosity, using wet film gauge.
* Starts pump that fills printing machine reservoir.
* Adjusts printing cylinder that prints designs on painted metal strip and hydraulic pressure valve of laminating machine that applies plastic vinyl or adhesives to heated metal strip.
* Turns valve to control spray of water in quenching process that tempers paint, adhesives, or plastic vinyl.
* Presses pedal of shear machine to cut metal strips.
* Pushes reel lever to rewind coated metal strip into coil.
* Examines coated metal workpieces for defects, such as air bubbles or uncoated surfaces.
Industry:Professional careers
A professional who operates machines to process dental-amalgam and tests amalgam with interferometer. Respnsibilities include:
* Anneals ingot of tin, copper, and silver to obtain specified molecular characteristics.
* Cuts ingot into chips of uniform size, using engine lathe.
* Pours chips into hopper of grinder and starts machine to grind chips into microgranules of specified size.
* Loads granules into elutriator and turns valve to regulate flow of water that forces granules through sieves to separate granules, according to size.
* Loads moist granules in drying machine or oven.
* Mixes specimen quantity of alloy with mercury, using amalgamator machine or mortar and pestle, and packs mixture into mold.
* Removes amalgam from mold and places amalgam between glass panels of instrument.
* Counts black bands appearing within circle of instrument and informs supervisor of number of bands.
Industry:Professional careers
A professional who operates machines to process dental-amalgam and tests amalgam with interferometer. Respnsibilities include:
* Anneals ingot of tin, copper, and silver to obtain specified molecular characteristics.
* Cuts ingot into chips of uniform size, using engine lathe.
* Pours chips into hopper of grinder and starts machine to grind chips into microgranules of specified size.
* Loads granules into elutriator and turns valve to regulate flow of water that forces granules through sieves to separate granules, according to size.
* Loads moist granules in drying machine or oven.
* Mixes specimen quantity of alloy with mercury, using amalgamator machine or mortar and pestle, and packs mixture into mold.
* Removes amalgam from mold and places amalgam between glass panels of instrument.
* Counts black bands appearing within circle of instrument and informs supervisor of number of bands.
Industry:Professional careers
A professional who cleans rocket-motor cases and lines them with heat-resistant coatings by performing any combination of following tasks. Respnsibilities include:
* Moves motor cases through various process stations of building, using hoist and conveyor system.
* Attaches and removes special handling devices (handling rings) on motor cases, using wrenches and other handtools or portable power tools.
* Immerses case in chemical bath for specified period to remove protective coatings or contaminants.
* Wipes solution from inside of case, using cloth.
* Removes chemical film from surface of case, using sandblasting equipment.
* Paints outside of motor case, using spray gun.
* Bakes motor case in drying oven.
* Lowers motor case onto bed of lining machine.
* Connects turntable to end of motor case, using wrenches.
* Starts machine which rotates case and sprays heat-resistant material on inside of case.
* Examines coating for voids or other defects.
* Conveys lined motor case to curing oven.
* Observes recording instrument charts on control panel of curing oven to verify specified temperatures and curing time.
* Lowers cured cases onto skids and covers ends with paper and gummed tape.
Industry:Professional careers
A professional who sets up and operates machine that coats flat sheet or coiled metal to specified color and finish. Respnsibilities include:
* Mixes alodize solution in tank of machine, according to formula.
* Places container of solution sample under test tube and reads gauge to determine solution concentration.
* Sets up machine rolls and guides, using handtools and micrometer.
* Turns dial and observes gauge to heat solution to specified temperature.
* Operates hoist to place sheets on machine feed carriage or to lift coil onto machine spindle.
* Feeds sheets or end of coil into machine rolls.
* Adjusts controls to maintain machine speed and temperature of solution to obtain specified color and coverage of metal.
Industry:Professional careers
