- المجال: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who weighs and crushes zinc ore and other materials, using platform scale, crusher, and handtools. Respnsibilities include:
* Signals overhead crane operator to lower loaded bucket of zinc ore onto platform scale.
* Balances scale beam.
* Records weight of materials and signals overhead crane operator to dump them into crusher.
* Starts vibrating screens that crush ore and separate it according to size.
* Shovels unscreened ore back into crusher.
* Scoops samples of ore from conveyor belt for laboratory analysis.
* Opens bin gate to fill bucket with sintered ore.
* Levels ore in bucket, using bar and shovel.
* Signals overhead crane operator to remove filled bucket and to replace it with empty one.
* Moves empty or filled buckets on cars about yard and plant, using power-driven winch.
Industry:Professional careers
A professional who tends conveying and grinding equipment that reclaims aluminum-hydrate scale. Respnsibilities include:
* Moves controls to regulate conveyor flow of hydrate scale to hammer mill and rodmill.
* Turns valves to add plant liquor to rodmill to maintain specified slurry density.
* Clears hoppers, pan feeders, and conveying equipment of accumulated materials, using bar, hammer, or shovel.
* Cleans conveyors, idlers, and pulleys, using scrapers and cleaning tools.
* Turns valves and starts pumps to switch product flow through auxiliary units.
* Catches product samples.
* Keeps operating log.
* Lubricates valves and adjusts packing glands to prevent leaks.
Industry:Professional careers
A professional who tends equipment that mills and recovers powdered metal used in powder metallurgy. Respnsibilities include:
* Pours specified amount of powder into ball mill.
* Screws covers on drum and straps drum to ball mill machine rack.
* Starts motor that rotates drum to grind powder by tumbling action of metal balls.
* Inserts filter bag and sieve in centrifuge drum.
* Opens water valve to flush milled powder from mill through sieve and filter bag into centrifuge.
* Starts centrifuge that separates water from powder.
* Pours extracted powder into trays for drying.
* Charges ball mill with additional balls as specified.
Industry:Professional careers
A professional who tends machine that breaks ore, skimmings, furnace residue, clay pieces, pot-room butts, or green carbon scrap into smaller sizes for further processing. Respnsibilities include:
* Starts crusher.
* Regulates flow of materials into crusher from conveyors, chutes, or bins.
* Prods large lumps with bar to force them through crusher.
* Breaks oversize lumps with sledgehammer.
* Maintains uniform flow of crushed materials to screens or roll crushers for further sizing by controlling movement of conveyor belt or feeder.
* Cleans, lubricates, and makes minor repairs to crusher.
* May remove scrap wood or iron by hand or with an electromagnet.
* May operate vibrating screens to separate materials within size ranges.
* May select samples of materials, using shovel or mechanical sampler.
* May tend control panel to monitor crushing machines that clean anode assemblies and be designated Anode-Assembly Cleaner I.
Industry:Professional careers
A professional who tends machine that breaks ore, skimmings, furnace residue, clay pieces, pot-room butts, or green carbon scrap into smaller sizes for further processing. Respnsibilities include:
* Starts crusher.
* Regulates flow of materials into crusher from conveyors, chutes, or bins.
* Prods large lumps with bar to force them through crusher.
* Breaks oversize lumps with sledgehammer.
* Maintains uniform flow of crushed materials to screens or roll crushers for further sizing by controlling movement of conveyor belt or feeder.
* Cleans, lubricates, and makes minor repairs to crusher.
* May remove scrap wood or iron by hand or with an electromagnet.
* May operate vibrating screens to separate materials within size ranges.
* May select samples of materials, using shovel or mechanical sampler.
* May tend control panel to monitor crushing machines that clean anode assemblies and be designated Anode-Assembly Cleaner I.
Industry:Professional careers
A professional who tends stamping mills that crush ore to specified fineness. Respnsibilities include:
* Turns valve to regulate flow of ore and water over plates beneath stamps.
* Examines crushed ore at outflow of mill to determine degree of fineness.
* Adjusts raising and dropping sequence of stamps.
* Replaces broken stamps, plates, and shafts.
Industry:Professional careers
A professional who loads conveyor of battery-crushing machine. Respnsibilities include:
* Lifts batteries from stockpile.
* Loads conveyor of machine that crushes batteries and separates plastic, metal, and lead-bearing acid.
* Listens for machine jams and other malfunctions.
* Dislodges jams, using metal bar or air compressor.
* Notifies designated worker of major malfunctions.
* May operate industrial truck to move pallets of batteries from storage area to work area.
Industry:Professional careers
A professional who prepares iron and steel machine-tool cuttings for use in making ferrosilicon by selecting scraps of desired thickness and breaking them up in hammer mill.
Industry:Professional careers
A professional who prepares iron and steel machine-tool cuttings for use in making ferrosilicon by selecting scraps of desired thickness and breaking them up in hammer mill.
Industry:Professional careers
A professional who forms sand molds to fabricate metal castings, using patterns or match plates, flasks, handtools and power tools, following instructions and applying knowledge of variables, such as metal characteristics, molding sand, pattern contours, and pouring procedures. Respnsibilities include:
* Places flask and drag onto molding board and positions pattern inside drag.
* Sprinkles or sprays parting agent onto pattern and flask, to facilitate removal of pattern from mold, and positions reinforcing wire in flask.
* Sifts sand over pattern, using riddle, and compacts sand around pattern contours.
* Shovels and packs sand into flask, using hand or pneumatic ramming tools.
* Inverts drag, positions cope half of pattern and flask onto drag, and repeats sand molding operation to imbed pattern into cope.
* Lifts cope from drag and removes pattern.
* Cuts runner and sprue hole into mold and repairs damaged impressions, using handtools, such as slick, trowel, spoon, and sprue cutter.
* Positions specified cores into drag and reassembles cope and drag.
* Moves and positions workpieces, such as flasks, patterns, and bottom boards, using overhead crane, or signals overhead crane operator to move and position workpieces.
* Pours molten metal into mold, manually or using crane ladle, or directs metal pourer to fill mold.
* May form and assemble slab cores around pattern to reinforce mold, using handtools and glue.
* May operate ovens or furnaces to melt, skim, and flux metal.
* May form molds at bench and be designated Molder, Bench or form molds on floor and be designated Molder, Floor.
Industry:Professional careers
