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U.S. Department of Labor
Domeniu: Government; Labor
Number of terms: 77176
Number of blossaries: 0
Company Profile:
A professional who makes clay cores around which ferrous and nonferrous pipe is cast. Respnsibilities include: * Clamps rod in bench vises so that it can be rotated. * Wraps rod with paper, straw, or jute, tying it firmly in place with twine. * Mixes mud, sand, and loam to form clay. * Spreads clay over wrapping, adding molasses to make mixture cohesive and working coating by hand so that it is smooth and even. * Spreads core blacking over core and places it in drying oven for specified time. * Removes dried core and applies second coating to bring core to specified diameter. * Spreads blacking on core and returns it to oven for final drying.
Industry:Professional careers
A professional who cleans and assembles foundry molds to prepare them for pouring. Respnsibilities include: * Cleans inside surface of sand molds with airhose. * Positions cores in drags. * Thrusts rod into ventholes to remove obstructions. * Fits and clamps cope and drag together to form flask. * Places runner cup over pouring hole. * May patch and smooth damaged portions of mold, using spoon or trowel. * May assist in pouring metal into molds. * May remove castings from molds.
Industry:Professional careers
A professional who assembles wax components of patterns used in lost-wax casting process. Respnsibilities include: * Melts edges of wax components, using heated knife, and manually positions and joins components. * Repairs surface defects of patterns, such as holes and indentions, and smooths and seals joints, using wax and heated knife.
Industry:Professional careers
A professional who repairs wax patterns used in lost-wax casting process. Respnsibilities include: * Inspects patterns for defects, such as cracks, seams, broken edges, and excess wax. * Seals cracks, seams, and joints, removes excess wax, and builds up damaged edges, using wax and heated knife.
Industry:Professional careers
A professional who tends baking oven that hardens and strengthens green sand cores used in casting metal. Respnsibilities include: * Loads cores on racks, trays, or carts, and pushes them into oven. * Lights gas- or oil-fired furnace and turns valves to obtain specified temperature; or sets thermostat and closes switch to heat element in electric furnace. * Closes oven door and allows cores to bake for specified time. * Opens oven door and removes cores. * May adjust baffle plates that direct flow of heat in oven.
Industry:Professional careers
A professional who tends turnover draw-type coremaking machine that makes sand cores for use in casting metal. Respnsibilities include: * Clamps core box over die on front table of machine, and partly fills core box with sand from overhead chute, or by using hands or shovel. * Depresses pedal to open compressed-air valve that causes table to rise and fall with series of jolts, to compress sand in box. * Positions reinforcing wires in sand, fills box with sand, and repeats jolting. * Tamps sand into core box with hand or pneumatic tool. * Removes excess sand from top of core box with hands or straightedge and clamps metal plate to top of box. * Pulls lever to roll front table over and deposit box top down on rear table. * Pushes rear table down to withdraw core from core box and lifts core from machine.
Industry:Professional careers
A professional who tends turnover draw-type coremaking machine that makes sand cores for use in casting metal. Respnsibilities include: * Clamps core box over die on front table of machine, and partly fills core box with sand from overhead chute, or by using hands or shovel. * Depresses pedal to open compressed-air valve that causes table to rise and fall with series of jolts, to compress sand in box. * Positions reinforcing wires in sand, fills box with sand, and repeats jolting. * Tamps sand into core box with hand or pneumatic tool. * Removes excess sand from top of core box with hands or straightedge and clamps metal plate to top of box. * Pulls lever to roll front table over and deposit box top down on rear table. * Pushes rear table down to withdraw core from core box and lifts core from machine.
Industry:Professional careers
A professional who tends conveyor-screw coremaking machine that extrudes sand cores having uniform cross section. Respnsibilities include: * Installs specified core tube and conveyor screw in machine, using handtools. * Shovels sand into hopper, and tamps it down by hand. * Positions core plate at opening of core tube, and starts motor-driven or hand-operated conveyor screw which forces sand through core tube and onto core plate. * Cuts core at core tube opening when core fills plate. * May tend oven to bake cores. * Cuts baked cores to specified lengths with saw.
Industry:Professional careers
A professional who tends conveyor-screw coremaking machine that extrudes sand cores having uniform cross section. Respnsibilities include: * Installs specified core tube and conveyor screw in machine, using handtools. * Shovels sand into hopper, and tamps it down by hand. * Positions core plate at opening of core tube, and starts motor-driven or hand-operated conveyor screw which forces sand through core tube and onto core plate. * Cuts core at core tube opening when core fills plate. * May tend oven to bake cores. * Cuts baked cores to specified lengths with saw.
Industry:Professional careers
A professional who tends blower-type coremaking machine to produce sand cores. Respnsibilities include: * Removes sand and particles of dirt from pattern with compressed air or brush. * Places core box over pattern on bed of machine. * Pulls lever or depresses pedal to blow and compact sand in core box. * Places plate or drier on top of core box and turns box over. * Lifts core box from core and lifts core from machine. * May position reinforcing wires in core box before blowing in sand. * May perform only one of above operations on revolving, multiple station, blower-type coremaking machine. * May tend automatic blower-type coremaking machine and clean, glue, and rack cores as they are ejected from machine. * May tend machine equipped with double core box and glue and clean cores from one box while machine forms and cures cores in other core box.
Industry:Professional careers