- 업종: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who operates oxygen furnace and auxiliary equipment from pulpit to produce specified types of steel. Respnsibilities include:
* Moves controls to position furnace for charging operation.
* Observes temperature gauges and recorders, and moves controls to position oxygen lance and regulate flow of oxygen through lance onto charge.
* Sets weight indicator gauge according to specified amount of additives to be added to charge.
* Starts automatic weighing machine that releases additives, such as fluorspar, lime, and alloys, from bins onto conveyor leading to chute over furnace.
* Moves lever to release additives from chute into furnace.
* Moves controls to adjust position of oxygen lance in furnace, regulate oxygen flow, or adjust hood draft when sparking or slopping of charge occurs or furnace overheats.
* Moves controls to position transfer car, carrying ladle and slag pots, under taphole and to tilt furnace for tapping operation.
* Records operation data.
Industry:Professional careers
A professional who operates battery of gas-fired stoves to supply heated airblast to blast furnace. Respnsibilities include:
* Turns gas valves and ignites burners in combustion chamber of stove, using torch.
* Observes temperature records, and moves controls to close gas and chimney valves when heat inside stove reaches specified temperature.
* Opens valves on stove allowing air from blowing engine to pass through hot-blast stove into furnace.
* Adjusts stove controls to maintain specified temperature of airblast.
* Alternates operation among stoves in battery to provide continuous blast of hot air.
* Cleans carbon and dirt from flues to prevent internal explosions.
* Inspects cooling and washing equipment for leaks.
* Assists furnace crew in casting hot metal and flushing slag from furnace.
Industry:Professional careers
A professional who operates battery of gas-fired stoves to supply heated airblast to blast furnace. Respnsibilities include:
* Turns gas valves and ignites burners in combustion chamber of stove, using torch.
* Observes temperature records, and moves controls to close gas and chimney valves when heat inside stove reaches specified temperature.
* Opens valves on stove allowing air from blowing engine to pass through hot-blast stove into furnace.
* Adjusts stove controls to maintain specified temperature of airblast.
* Alternates operation among stoves in battery to provide continuous blast of hot air.
* Cleans carbon and dirt from flues to prevent internal explosions.
* Inspects cooling and washing equipment for leaks.
* Assists furnace crew in casting hot metal and flushing slag from furnace.
Industry:Professional careers
A professional who controls scruff and burn-off furnaces and auxiliary equipment to reclaim tin or terne from coating pots, tinplate, and used electrolytic anodes. Respnsibilities include:
* Washes scruff with hose to remove flux.
* Starts crushing machine, and shovels scruff into machine to reduce scruff to uniform size.
* Charges scruff into furnace, and ignites gas burner with torch.
* Adjusts heat controls to obtain specified temperature for reclaiming metal from scruff.
* Breaks up lumps in scruff, using rake and hoe.
* Turns valves to tap furnace and allow reclaimed metal to flow into iron kettle or melting pot.
* Heats kettle, and skims foreign metal from top, using ladle.
* Adds specified amounts of tin or lead in producing terne.
* Pours metal into pig or electrolytic anode molds.
* Weighs and records amount of recovered metal.
* Marks weight on pigs, and stores pigs in warehouse.
Industry:Professional careers
A professional who tests electrical circuitry and measures temperature and depth level of materials in aluminum reduction pots. Respnsibilities include:
* Places contact rods of voltmeter against anode of reduction pot and against lining (cathode) of next pot on line to obtain voltage reading of pot circuit.
* Records meter reading, repeats test on next pot, and deducts reading from previous reading to determine any power loss.
* Repeats test on each succeeding pot to obtain and record power loss at each point along potline.
* Removes concrete sections of floor, using overhead hoist, to expose electrical circuits.
* Places prongs of millivoltmeter on ground and electrical connections to measure amount of positive and negative charges entering pot.
* Inspects electrical connections, firebrick lining, and wiring to detect damaged, worn, or broken parts, and notifies pot-room supervisor of discrepancies.
* Breaks hole in pot crust with crowbar, and inserts thermocouple to measure temperature of contents.
* Measures depth of contents, using measuring rod, and records temperature and depth on control form.
* Dips ladle into pot to remove sample of aluminum for laboratory analysis, and pours sample into mold.
* Records test readings, voltage loss, temperatures, and depth levels on master control form, and submits it to pot-room supervisor.
Industry:Professional careers
A professional who weighs alloy, shot, or strips of metal to obtain specified amounts required by furnace operator, using platform scale. Respnsibilities include:
* Cuts bar stock to specified lengths, using power saw.
* Stamps code on bar to indicate alloy and heat number.
* Places pelletized metal in barrels.
* Records weight and kind of metals issued in logbook.
* Delivers specified metal to furnace operator, using handtruck or industrial truck.
* May verify incoming metal shipments against invoice, store metal, and maintain inventory of metal on hand.
Industry:Professional careers
A professional who controls cupola furnace to melt and refine iron, scrap metal, and other additives to produce gray iron castings. Respnsibilities include:
* Closes and props door in bottom of cupola.
* Shovels sand into cupola and tamps sand to form wedge-shaped layer on cupola bottom sloping toward taphole.
* Kindles fire, using gas torch, to ignite coke bed in cupola, and starts and sets speed of blowers that supply air to cupola.
* Signals cupola charger to begin charging metal, coke, and limestone into cupola.
* Reads gauges indicating temperature of molten metal in cupola and amount of air flowing into and out of cupola, and adjusts controls accordingly.
* Taps molten metal from cupola.
* Estimates, from color of slag draining from surface of molten metal, physical properties of metal being melted.
* Pulls prop from bottom doors of cupola, when shutting down furnace, to allow residual materials to drop out.
* May charge layer of excelsior, rags, and wood over sand bed to protect cupola from initial charge of coke and to ignite fuel.
Industry:Professional careers
A professional who tends furnace that remelts nonferrous alloyed metals used in diecasting process. Respnsibilities include:
* Shovels specified proportions of scrap metal and ingots into furnace.
* Sprinkles fluxing compound on molten metal to bring impurities to surface.
* Skims slag from surface of molten metal, using hand strainer.
* May transfer molten metal from furnace to bull ladle, using hand ladle.
* May convey molten metal in bull ladle along overhead monorail, and pour metal into retainer of diecasting machine.
* May pour molten metal into sand molds, using power hoist.
* May clean furnaces and equipment.
Industry:Professional careers
A professional who tests temperature of molten metal for conformance to pouring specifications, using optical or thermocouple pyrometers. Respnsibilities include:
* Advises cupola tender or furnace operator when temperature reading varies from specifications.
* Records temperature reading on standard form.
Industry:Professional careers
A professional who tests temperature of molten metal for conformance to pouring specifications, using optical or thermocouple pyrometers. Respnsibilities include:
* Advises cupola tender or furnace operator when temperature reading varies from specifications.
* Records temperature reading on standard form.
Industry:Professional careers
