- 업종: 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
