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U.S. Department of Labor
Industry: Government; Labor
Number of terms: 77176
Number of blossaries: 0
Company Profile:
A professional who controls variety of machines to mix, dip, grind, and bake flux onto electric welding rods. Respnsibilities include: * Operates bandsaw to cut welding rod stock to specified length. * Pours flux ingredients into mixing machine and starts machine. * Measures specific gravity of flux mixture, using hydrometer. * Pours flux into hydraulic dipping machine. * Places rods in dip holding rack and turns end bolt to secure rods, using wrench. * Slides rack into dipping machine and adjusts temperature and humidity gauges, according to work order specifications. * Removes and places dipped rods on drying rack to dry. * Operates grinding machine to remove excess flux from coated rod tips. * Bakes coated rods in drying oven for specified period of time. * Operates marking machine to print identification code on rods as specified. * Cleans equipment, using water hose and scraper.
Industry:Professional careers
A professional who operates pasting machine and dryer to apply specified amount of lead-oxide paste onto grids used in making storage battery plates. Respnsibilities include: * Stacks grids or multiple-grid panels on bench or in automatic feeding device. * Adjusts shoes (guides) on pasting machine to size of grid, using handtools. * Adjusts scraper blade (wiper) and roller, according to thickness specified for plate, using wrenches. * Hoists carts of paste into position near machine and shovels paste into hopper. * Starts machine that automatically feeds grids or manually places grids between shoes. * Weighs wet plates on scale and changes elevation of scraper to produce plate of specified weight. * Installs device (pyramid) in machine that prevents pasting of center strip of panels and determines width of plates. * Sets temperature of dryer. * Cleans machine. * Changes conveyor belts or cheesecloth cover on roller, using handtools. * May tend machine that breaks finished double-grid plates into single units. * May segregate defective plates, stack acceptable plates in box, and set aside for curing period. * May clean edges and lugs of plates, using wire brush. * May mix lead-oxide powders, water, and acids into paste.
Industry:Professional careers
A professional who operates pasting machine and dryer to apply specified amount of lead-oxide paste onto grids used in making storage battery plates. Respnsibilities include: * Stacks grids or multiple-grid panels on bench or in automatic feeding device. * Adjusts shoes (guides) on pasting machine to size of grid, using handtools. * Adjusts scraper blade (wiper) and roller, according to thickness specified for plate, using wrenches. * Hoists carts of paste into position near machine and shovels paste into hopper. * Starts machine that automatically feeds grids or manually places grids between shoes. * Weighs wet plates on scale and changes elevation of scraper to produce plate of specified weight. * Installs device (pyramid) in machine that prevents pasting of center strip of panels and determines width of plates. * Sets temperature of dryer. * Cleans machine. * Changes conveyor belts or cheesecloth cover on roller, using handtools. * May tend machine that breaks finished double-grid plates into single units. * May segregate defective plates, stack acceptable plates in box, and set aside for curing period. * May clean edges and lugs of plates, using wire brush. * May mix lead-oxide powders, water, and acids into paste.
Industry:Professional careers
A professional who controls metal spraying machine and melting furnace to coat carbon anodes with molten aluminum for use in reducing pots. Respnsibilities include: * Sets furnace temperature control dial at desired level and checks level of molten aluminum in furnace. * Adjusts flow of compressed air through spray nozzle and hydraulic tilt of furnace and turntable. * Presses button on control panel to move monorail trolley holding anode assembly onto turntable of spray machine. * Starts hydraulic system that lowers turntable and anode to bottom of spray pit. * Starts flow of compressed air through nozzle that sprays specified amount of molten metal onto rotating anode. * Repositions furnace in original position, stops equipment, and hoists anode assembly onto monorail conveyor for movement to loading station. * Cleans aluminum overspray from sides and bottom of pit and places residue in container for reuse. * Skims slag from molten aluminum in furnace to remove impurities.
Industry:Professional careers
A professional who coats small steel valve parts, crystal slices used in making semiconductors, or related materials with nickel plate, using nonelectric dipping process. Respnsibilities include: * Fills dip tank with nickel salt solution and sets controls to maintain specified temperature. * Fills basket with parts to be plated or mounts slides bearing crystal slices on holding fixture, and lowers materials into plating tank. * Determines time parts remain in bath, using knowledge of process and thickness of plating desired. * Removes parts when process is completed. * Gauges parts frequently with micrometers to see that specified tolerances are maintained. * Adds plating solution or refills tanks, as necessary, to complete plating process. * May immerse materials in leaching or cleaning solution preparatory to plating.
Industry:Professional careers
A professional who sprays variety of objects, such as valves, clutch plates, and cylinder linings, on production basis, to coat them with specified thickness of metal. Respnsibilities include: * Cleans and roughens surface of object in sand or shotblast cabinet. * Fastens objects in fixture or between bench centers. * Preheats object for spraying, using oxyacetylene torch or metalizing gun. * Moves controls to set specified rate of wire feed and flow of oxygen and fuel gases through metalizing gun. * Ignites gases to melt wire and presses button or trigger to release compressed air which atomizes and sprays molten metal onto workpiece. * Manually directs spray over object to apply coating of specified thickness. * May spray metal objects with soft solder preparatory to assembly and be designated Solder Sprayer.
Industry:Professional careers
A professional who tends equipment that imparts decorative bluing or brown-black color, and hard, corrosion resistant surface to gun barrels. Respnsibilities include: * Mixes solution of acids and metallic salts, according to formula. * Places barrels on conveyor that passes through coloring tanks, electrical drying, and preheating oven into steam chamber where controlled temperature and humidity promote oxidation. * Rinses barrels in boiling water and holds them against wire or fiber brush wheel to remove loose rust particles and produce satin finish. * Repeats rusting and brushing cycle until color of barrel conforms to specified standards. * Swabs browned barrels with rust-preventing oil, using rag or sponge.
Industry:Professional careers
A professional who tends automatic or semiautomatic metal spraying machine that bonds protective or decorative coatings to metal objects, such as clutch plates and valves, on production basis. Respnsibilities include: * Loads objects on conveyor or places them in fixture. * Sets controls on panel to regulate such functions as conveyor speed, rate of wire or powder feed, flow of compressed air and fuel gas, and starting and stopping of spray. * Starts machine and observes operation to detect malfunctioning of equipment.
Industry:Professional careers
A professional who tends automatic or semiautomatic metal spraying machine that bonds protective or decorative coatings to metal objects, such as clutch plates and valves, on production basis. Respnsibilities include: * Loads objects on conveyor or places them in fixture. * Sets controls on panel to regulate such functions as conveyor speed, rate of wire or powder feed, flow of compressed air and fuel gas, and starting and stopping of spray. * Starts machine and observes operation to detect malfunctioning of equipment.
Industry:Professional careers
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
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