- 업종: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who skims slag from surface of copper being refined in reverberatory furnace. Respnsibilities include:
* Signals overhead crane operator to lower pan, and positions it in front of slag tapping hole.
* Inserts wood pole through door in side of furnace, working pole back and forth to push slag toward front of furnace.
* Drags slag from surface of copper into pan, using steel hoe.
* Inserts compressed-air line through furnace opening, and turns valve to force air through molten metal to oxidize impurities.
* May shovel coke over surface of skimmed metal to prevent excess oxidation.
Industry:Professional careers
A professional who directs waste ore materials through pipelines into tailings basin. Respnsibilities include:
* Opens and closes spigots to regulate flow of tailings.
* Connects hoses to spigots and adds pipes to lengthen discharge lines, using wrenches.
* Distributes tailings evenly in basin to form dam of waste materials.
* Digs ditches with shovel to drain water.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in operation and maintenance of aluminum-reduction pots.
* Performs duties as described under supervisor master title.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in operating open-hearth, electric-arc, or oxygen furnaces to produce steel. Respnsibilities include:
* Directs workers in charging furnace with specified raw material and in taking temperature tests of molten metal.
* Observes color of molten metal through cobalt-blue glasses, and orders changes in furnace temperature.
* Coordinates charging and melting with molding and pouring operations.
* Performs other duties as described under supervisor master title.
* May be designated according to type of furnace as Melter Supervisor, Electric-Arc Furnace; Melter Supervisor, Open-Hearth Furnace; Melter Supervisor, Oxygen Furnace.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in melting reclaimed dross and scalpings, casting molten scrap into ingots, and alloying aluminum with metals, such as copper, nickel, and iron. Respnsibilities include:
* Inspects condition (paper-covered, dirty, glass-mixed) and type of incoming scrap to determine melting process, and records information on planning chart.
* Confers with other departments to determine alloys to be used and priority of casting.
* Performs duties as described under supervisor master title.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in tapping remelt furnaces, and in fluxing aluminum alloy preparatory to casting. Respnsibilities include:
* Directs workers in tapping of aluminum alloy from remelt furnaces into ladles and in introducing chlorine gas into ladles to flux molten alloys.
* Directs overhead crane operator in moving ladles from tapping position to casting units.
* Records temperature and time of tapping furnaces and of fluxing ladles.
* May supervise workers engaged in collecting and weighing charges of aluminum and other metals for melting into alloys and be designated Metal Expediter.
* Performs other duties as described under supervisor master title.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in controlling blast furnaces to smelt concentrates of lead ore preparatory to refining it.
* Performs duties as described under supervisor master title.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in tending reduction pots to smelt aluminum oxide into aluminum. Respnsibilities include:
* Observes gas flames, warning lights, and voltmeters on pots to verify specified voltage input.
* Signals pot tender to raise and lower anode to restore pot to normal operation.
* Performs other duties as described under supervisor master title.
Industry:Professional careers
A professional who operates open-hearth furnaces to produce specified types of steel. Respnsibilities include:
* Examines raw materials for conformance to specifications.
* Signals charging-machine operator to place materials in furnace.
* Turns fuel, air, and steam controls to adjust fuel mixtures and draft.
* Moves levers to circulate gas throughout furnace to distribute heat and prevent burning out of furnace walls.
* Signals overhead crane operator to pour molten metal in furnace.
* Obtains sample of metal, using long-handled spoon, and pours sample into test mold.
* Tests sample for carbon content, using carbon analyzer.
* Moves controls to open furnace doors, and shovels additives, such as fluorspar, lime, and alloys, into furnace to obtain specified type of steel.
* Determines temperature of metal, using thermocouple.
* Observes color of molten metal through cobalt-blue glasses to determine when to tap furnace and notifies melter supervisor.
* Directs crew in tapping furnace and adding specified additives to ladle.
* Records operational data on forms.
* Examines furnace to determine repairs needed, and directs crew in repairing furnace walls and flooring.
Industry:Professional careers
A professional who operates furnace to remove moisture, arsenic, or sulfur from ore. Respnsibilities include:
* Charges top hearth of roaster with ore, regulating rate of charge by means of chute door.
* Determines speed with which roaster is being charged by weighing sample of charge ore obtained over measured interval of time.
* Starts rabbles (automatic rakes) that scrape hearth beds continually and move ore from one hearth to next lower one.
* Regulates draft and temperature of roaster by adjusting dampers and gas pressure.
* Replaces rabble arms by detaching arm from shaft with bar and removing it with hoist.
* Replaces defective rabble teeth.
* Directs workers in removing incrustations from hearth beds.
* Removes samples of roasted ore for laboratory analysis.
* May clean arms and rabbles with scrapers and iron bars.
* May determine oxide content of dried ore by titrating specified amount of flakes and calculating percentage.
* May replace defective parts and clean equipment.
Industry:Professional careers
