- 업종: 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
