Vocabulary Comparison Gooseneck
Food & Drink Cake of gold A dessert fi t for a
king. In metalcasting, it’s gold formed into a compact mass by the distillation of
mercury from a mercury-gold mixture. Coke Something to fuel your body or a cupola. Coke is used to melt charge materials and can be the source of some
of the carbon found in cast iron. Draft In life, a couple of cold drafts will distort reality,
while in metalcasting, a draft prevents distortion. A draft is taper on the vertical sides of a pattern or corebox that permits the core or sand mold to be removed without
distorting the sand. Feeding Needed to properly fi ll your body and a
casting. Feeding is the pouring of additional molten metal into a freshly poured mold to compensate for volume shrinkage while the casting is solidifying; or it’s the continuous supply of molten metal, as from a riser, to the
solidifying metal in a casting. Fillet Unfortunately, fi llets (pronounced fi l-it) are not
very tasty in a metalcasting facility. A fi llet is a concave corner piece used to provide a radius in corners on pat- terns and core boxes, or a radiused joint replacing sharp inside corners. Fillets are used to avoid shrinkage cracks
and eliminate concentrations of stress in castings. Flask Essential in the prohibition era and for metal-
casters, a fl ask is a rigid metal or wood frame used to hold the sand of which a mold is formed and usually consists of
two parts, cope (top) and drag (bottom). Scrap Rejected food or castings. Shot By being so strong, a shot gets the job done. In
casting facilities, a shot is abrasive blast cleaning material. In diecasting, it is the phase of the cycle when molten metal is forced into the die.
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46 | METAL CASTING DESIGN & PURCHASING | Nov/Dec 2011 Biscuit It’s round in both contexts, but the
comparison stops there. In the metalcasting in- dustry, a biscuit is the solid metal left at the end of the injection cylinder after a plunger stroke in the cold-chamber diecasting process.
Plunger Always used to push things through. In
diecasting, it’s the ram or piston that forces molten metal from the shot sleeve into a die and applies pressure during solidifi cation.
Biscuit Gooseneck The term comes from the similar
shape. In diecasting, a gooseneck is an S-shaped container for molten metal, holding it in position to be rammed into the die cavity.
Plunger
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