1. Tunes metal reeds of musical instruments to standard pitch: Dismantles instrument and removes reed blocks, using handtools. 2. Positions reed block over orifice in testing stand and actuates hand-or foot-operated bellows to sound reed. 3. Strikes tuning bar and compares pitch of reed with that of bar to ascertain …
1. Tends machine that makes metal sponges: Places spool of wire on spindle and threads end of wire around tension rollers and around winding spindle. 2. Installs and threads additional spools of wire according to type of sponge to be made. 3. Presses button to start machine that twists, curls, …
1. Sets up and operates metal spraying machine to bond protective or decorative coatings to metal objects: Positions workpieces into holding fixtures of conveyor. 2. Attaches nozzle onto spray gun and positions gun at specified distance from workpiece. 3. Connects hoses from gun to air compressor and fuel tanks. 4. …
1. Originates, controls, and develops flotation, smelting, electrolytic, and other processes used in winning metals from their ores, for producing iron and steel, or for refining gold, silver, zinc, copper, and other metals: Studies ore reduction problems to determine most efficient methods of producing metals commercially. 2. Controls temperature adjustments, …
1. Investigates and conducts experiments concerned with physical characteristics, properties, and processing of metals to develop new alloys, applications, and methods of commercially fabricating products from metals: Conducts microscopic, x ray, x-ray diffraction, and spectroscopic studies of metals and alloys, such as steel, cast iron, and nonferrous alloys, to determine …
1. Conducts microscopic, macroscopic, and other tests and investigations on samples of metals and alloys for purposes as metallurgical control over products or use in developing new or improved grades and types of metals, alloys, or production methods: Directs laboratory personnel in preparing of samples, such as polishing or etching, …
1. Examines and tests metal samples to determine their physical properties, under direction of METALLOGRAPHER: Conducts routine microscopic examinations of metals and alloys to determine their crystal structure, porosity, homogeneity, and other characteristics. 2. Polishes or etches metal specimens and photographs samples, using photomicroscope, or directs photography technical personnel to …
1. Tends machine that slits rolls of metallic yarn material into narrow yarn widths for use in textile manufacture: Positions narrow roll of laminated metallic material on machine arbor and threads end of material through antistatic pad, circular cutters, tension rollers, and around takeup bobbins. 2. Turns valve to drop …
1. Tends equipment that deposits layer of metal on semiconductor surfaces to provide electrical contact between circuit components: Places semiconductors, such as silicon wafers, crystal units, or fiber optic microchannel plates, in container, using vacuum wand or tweezers. 2. Cleans semiconductors to remove contaminants prior to metal deposition, using chemical …
1. Examines interior and exterior of assembled lacquered, enameled, or varnished pieces of metal furniture for defects in finish or construction. 2. Rejects faulty pieces and returns pieces to proper departments for correction. 3. Applies manufacturer’s label to accepted pieces.
1. Tends equipment that chemically cleans grease, scale, dirt, and other foreign matter from metal objects to prepare them for processes, such as electroplating and galvanizing: Removes shavings, dirt, and rust spots from objects, using airhose, file, or sandpaper. 2. Loads objects on conveyor which carries them through series of …
1. Expedites movement of metal stock and supplies used in producing nonferrous metal sheets, bars, tubing, and alloys: Inspects incoming material to ascertain condition, and attaches identification tag to containers or uncrated items. 2. Directs workers weighing or counting metal or supplies, and records amounts received. 3. Directs workers in …
1. Assists workers engaged in fabrication of structural or sheet metal products, performing any combination of following tasks: Lifts, positions, and removes workpieces from machines to assist in fitting and welding. 2. Holds tape and rods and marks reference points to assist in layout. 3. Loads, stacks, and transports stock, …
1. Mixes, stores, and issues metal bonding adhesives for use by workers assembling metal parts for aircraft, missile and space vehicles, marine craft, or trailer parts: Measures and weighs ingredients according to formula to obtain specified weight and proportion, using scales, balances, and graduated vessels. 2. Dumps ingredients into machine, …
1. Sets up and operates hydraulic press equipped with heated platens to bond metal aircraft and space vehicle parts and assemblies: Reads blueprints and shop orders to determine areas of parts to be joined, amount of bonding agent to apply, and temperature and pressure required. 2. Examines parts or assemblies …
1. Controls portable flame spray equipment to spray corrosion-resistant coatings, such as zinc or aluminum, on objects, such as plates, tanks, and structural shapes according to specifications: Cleans and roughens surface of object to be coated, using sandblasting equipment. 2. May flame-spray nonmetallic objects, such as glass or plastics.
1. Sets up and operates flame-spray equipment and machine tools to build up worn parts, such as crankshafts, motor shafts, clutch plates, and piston rods, and to salvage defective machined parts, according to specifications: Washes object with solvents, or heats object with torch or in furnace to remove impurities, such …
1. Sprays variety of objects, such as valves, clutch plates, and cylinder linings, on production basis, to coat them with specified thickness of metal: Cleans and roughens surface of object in sand or shotblast cabinet. 2. Fastens objects in fixture or between bench centers. 3. Preheats object for spraying, using …
1. Performs any combination of following duties to assist METAL FABRICATOR in fabricating and assembling boilers and steel plate vessels, such as tanks and vats: Tends machines, such as drill press, punch press, and boring mill to drill, punch, and ream metal stock for boiler parts. 2. Tends power shears …
1. Grinds, files, or sands surfaces of metal items, such as automobile bodies and household appliances, using handtools, power tools, and knowledge of metal finishing techniques: Examines and feels surface of metal to detect defects, such as dents, scratches, or breaks in metal. 2. Removes dents, using hammer and dolly …
1. Installs sheet metal panels, molding, and exterior parts and accessories on manufactured building and travel trailer frames and bodies, using handtools and power tools: Positions panels on body frame, by hand or using chain hoist. 2. Fastens panels to frame, using hammer, drill, rivet gun, stapler, and screwdriver. 3. …
1. Removes surface defects, such as burrs and pits, from metal furniture parts and polishes surface: Positions parts in holding device and removes surface defects with hand sanding machine, sandpaper, or file. 2. Polishes surface to smooth finish, using such materials as cleaning powder, pumice, or steel wool. 3. Wipes …
1. Weighs alloy, shot, or strips of metal to obtain specified amounts required by FURNACE OPERATOR, using platform scale: Cuts bar stock to specified lengths, using power saw. 2. Stamps code on bar to indicate alloy and heat number. 3. Places pelletized metal in barrels. 4. Records weight and kind …
1. Fabricates and assembles structural metal products, such as framework or shells for machinery, ovens, tanks, stacks, and metal parts for buildings and bridges according to job order, verbal instructions, and blueprints: Develops layout and plans sequence of operations, applying knowledge of trigonometry, stock allowances for thickness, machine and welding …
