A Design Study in Steel Castings - Steel Plates
in BOP Valve
Controlling
Solidification
A critical casting process
design issue is how the solidification of the metal is controlled in the mold. Controlled
solidification is necessary to eliminate isolated hot spots and to prevent shrinkage in
the body of the casting.
Two methods of controlling solidification are:
Using “chill blocks” to locally increase the rate
of heat removal in heavier sections and accelerate solidification
Positioning risers to act as reservoirs to feed metal into
heavier sections during solidification.
