- 업종: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who sets up and operates die press, using demountable dies (dies with interchangeable parts) to cast motor and generator rotors. Respnsibilities include:
* Stacks rotor core laminations and mounts them over keyed mandrel secured to die base of casting machine.
* Verifies skew of core slots, using fixed gauge and places die shell and top plate over assembly and secures with C-clamp.
* Loads aluminum bar stock into pot-type furnace.
* Observes thermocouple dial and turns gas valve to regulate temperature of molten metal.
* Lines cylinder pot with asbestos strips and disk to prevent chilling.
* Pours specified amount of molten aluminum into cylinder, using hand ladle.
* Loads die and lamination assembly into press cavity and closes door.
* Pulls levers to activate die rams that force molten aluminum through and around laminations and eject cast rotor from press cylinder.
* Removes and stamps rotor with identifying data.
Industry:Professional careers
A professional who sets up and operates die press, using demountable dies (dies with interchangeable parts) to cast motor and generator rotors. Respnsibilities include:
* Stacks rotor core laminations and mounts them over keyed mandrel secured to die base of casting machine.
* Verifies skew of core slots, using fixed gauge and places die shell and top plate over assembly and secures with C-clamp.
* Loads aluminum bar stock into pot-type furnace.
* Observes thermocouple dial and turns gas valve to regulate temperature of molten metal.
* Lines cylinder pot with asbestos strips and disk to prevent chilling.
* Pours specified amount of molten aluminum into cylinder, using hand ladle.
* Loads die and lamination assembly into press cavity and closes door.
* Pulls levers to activate die rams that force molten aluminum through and around laminations and eject cast rotor from press cylinder.
* Removes and stamps rotor with identifying data.
Industry:Professional careers
A professional who taps blast furnace to fill ladles with molten metal. Respnsibilities include:
* Drills taphole preparatory to tapping, using power hand drill.
* Positions splasher plate in front of taphole to prevent splashing of metal when furnace is tapped.
* Guides point of oxygen lance into drilled taphole to tap furnace.
* Opens gates and shutters to direct flow of molten iron onto runners and into ladles.
* Plugs taphole after ladles are filled, using mud gun.
* Assists other workers in breaking up and removing slag from runners, relining runners with sand, clay, and refractory mixture, and drying relined runners.
* Repairs or replaces defective tuyeres, blowpipes, and boshplates in furnace, using handtools.
Industry:Professional careers
A professional who pours molten metal from ladles into molds to form ingots. Respnsibilities include:
* Examines molds to ensure that they are clean, smooth, and coated.
* Signals overhead crane operator to position pouring nozzle of ladle over molds.
* Pulls lever to lift ladle stopper and allow molten steel to flow into ingot molds to specified height.
* Replaces defective stoppers, using handtools, sledges, and bars.
* Signals steel-pourer helper during steel pouring operation to obtain sample of steel for analysis, spray water on filled molds, and cap molds.
* Removes solidified steel or slag from pouring nozzle, using long bar or oxygen burner.
Industry:Professional careers
A professional who assists steel pourer in pouring molten metal into molds. Respnsibilities include:
* Places equipment, such as shovels, water hose, and boards on pouring platform.
* Counts molds and caps to ensure specified number for pouring operation.
* Measures and marks molds to indicate specified filling heights, using tape and chalk.
* Weighs specified additives, and transports additives to pouring platform, using wheelbarrow.
* Shovels additives into molds to prevent metal from boiling and forming air bubbles inside ingot.
* Signals overhead crane operator to position hot-tops (covers) or steel plates on filled molds to retard cooling of steel.
* Pours sample of molten steel into test mold for laboratory analysis.
* Sprays mold covers with water to cool covers.
* Signals overhead crane operator to remove covers from molds after steel has solidified.
* Removes bricks from ladles that require relining and sets stopper assemblies and nozzles in relined ladles, using bars, sledge, and handtools.
* Performs other duties as described under helper master title.
Industry:Professional careers
A professional who controls automatic equipment to melt and cast lead into cylindrical billets, and extrude billets into wire for making bullets and cores used in small arms ammunition. Respnsibilities include:
* Starts electric furnace, observes gauges, and turns rheostat to maintain specified temperature and pressure.
* Charges furnace with lead pigs and scrap of specified alloy, using conveyor and elevating platform.
* Skims dross from molten lead with skimming ladle.
* Turns wheel to adjust flow of molten lead into mold.
* Adjusts stroke of billet extractor mechanism, installs extruding dies, and regulates ram speed and flow of water coolant, using handtools.
* Threads extruded wire over pulleys into slug-forming machines or through guide pipes to be coiled in drums.
* Verifies wire size with snap gauges to ensure conformity to specifications.
Industry:Professional careers
A professional who sets up and operates continuous casting machine to produce tubes and rods. Respnsibilities include:
* Threads graphite die into bottom of crucible that holds molten metal during casting process.
* Places water jacket around die and connects waterlines.
* Inserts metal bar (starting tip) through die into crucible to form weld with molten metal.
* Inserts metal extension rod through driving rollers and threads rod to starting tip.
* Regulates speed of rollers to draw extension rod, starting tip, and molten metal through die in continuous casting process.
Industry:Professional careers
A professional who operates one or more centrifugal-casting machines to cast metal parts of costume jewelry. Respnsibilities include:
* Dusts inside of rubber mold with chalkdust compound to facilitate flow of metal during casting and prevent mold from burning.
* Fits halves of molds together and places them on mold setting.
* Places disks under mold to adjust working pressure.
* Positions metal-pressure plate on mold to level mold on machine.
* Sets dial for specified pressure and speed of rotation, closes lid, and starts machine.
* Pours molten metal through funnel into machine, using ladle.
* Stops machine and removes mold.
* Separates halves of mold to remove casting, using pliers.
* May cast wax models of jewelry.
Industry:Professional careers
A professional who casts lead storage battery parts, such as grids, connectors, posts, and straps. Respnsibilities include:
* Installs specified type and size mold on bed of machine, using handtools.
* Loads lead bars or shovels pig lead or scrap lead into melting kettle.
* Ignites burner and sets controls to melt and heat lead to casting temperature.
* Coats or smokes faces of mold to prevent sticking, using spray gun or acetylene torch.
* Dips ladle into molten metal and pours metal into mold.
* Moves lever or strikes knock-out pins with mallet to open mold and release parts.
* Inspects parts for cracks, flash, or faulty molding, and adjusts temperature of kettle to correct defects.
* Trims edges of parts, using hand scraper or pedal-operated power shear.
* Cleans mold, using brush.
* May change mold inserts and adjust knock-out pins, using handtools and depth gauge.
* May position and manually hold one half of mold against other half, pour metal into mold, and separate mold parts and loosen castings, using soft mallet.
* May pour lead into molds held in radial arms of machine that brings molds to worker and discharges castings onto table.
* May sort and weigh parts.
* May be designated according to part cast as Grid Caster.
Industry:Professional careers
A professional who casts lead storage battery parts, such as grids, connectors, posts, and straps. Respnsibilities include:
* Installs specified type and size mold on bed of machine, using handtools.
* Loads lead bars or shovels pig lead or scrap lead into melting kettle.
* Ignites burner and sets controls to melt and heat lead to casting temperature.
* Coats or smokes faces of mold to prevent sticking, using spray gun or acetylene torch.
* Dips ladle into molten metal and pours metal into mold.
* Moves lever or strikes knock-out pins with mallet to open mold and release parts.
* Inspects parts for cracks, flash, or faulty molding, and adjusts temperature of kettle to correct defects.
* Trims edges of parts, using hand scraper or pedal-operated power shear.
* Cleans mold, using brush.
* May change mold inserts and adjust knock-out pins, using handtools and depth gauge.
* May position and manually hold one half of mold against other half, pour metal into mold, and separate mold parts and loosen castings, using soft mallet.
* May pour lead into molds held in radial arms of machine that brings molds to worker and discharges castings onto table.
* May sort and weigh parts.
* May be designated according to part cast as Grid Caster.
Industry:Professional careers
