Operate centrifugal casting machines to cast artillery barrels.
What does a Centrifugal-Casting-Machine Operator III do?
Operates centrifugal casting machine to cast artillery barrels: Grinds rough spots from inside of mold with grinding wheel mounted on end of long rod. Fills pits on inside surface of mold with refractory material. Fits refractory stoppers into ends of mold. Mounts pouring box, which serves as funnel for pouring melt from furnace into mold, on special frame at breech end of mold and fits spout of box through hole in stopper. Starts machine rotating at specified speed. Directs OVERHEAD CRANE OPERATOR 921.663-010 in positioning portable furnace containing melt for pouring, and pushes electric controls to tilt furnace and pour melt into pouring box. Forces casting from mold, using hydraulic ram. Observes instruments and records data, such as temperature of mold before and after pouring and time required to complete pour. May operate machine from control board and be designated Casting-Machine-Control-Board Operator.