The foundry engineer uses chills to produce sound
castings by controlling thermal gradients and the initiation, location, and direction of
solidification in the casting.
-- A chill is a block of material (sand or metal) which has a
high heat capacity and/or thermal conductivity, which accelerates the rate of heat
extraction in a critical area.
-- Chills are placed against features that need
to cool rapidly for microstructure control, but would tend to stay hot because of their
heavier cross section and higher thermal mass. |
