An Example in
Steel Casting -- Lever Arm in the BMW Engine Valve Train
Gating Design
The
gates into the casting serve as the path by which molten metal flows into the
mold cavity and feeds the shrinkage which develops during casting solidification.
Proper design
of the gating system is critical in meeting two important requirements.
Short flow paths and
controlled metal flow prevents casting
misruns due to premature solidification.
Relatively heavy
and thick sections which will solidify more
slowly require direct contact with the gating to provide molten metal for feeding shrinkage during
solidification.
