A Design Study in Centrifugal Steel Castings -
Accumulator Cylinder
Heat-Treating
and Machining
The
cooled casting is cleaned by abrasive blasting to remove any ceramic mold
coating or surface oxidation.
Controlled
heat treating and quenching are essential to produce the required metal
microstructure for the required mechanical and corrosion resistant properties.
Forced Flow Quench Tank at Spuncast
The
accumulator cylinder is furnace heat treated to 2050F and then
cooled to 1900F.
The
cylinder is then water quenched in a specially designed immersion bath with forced water
flow on the cylinder OD and through the center ID. The forced flow on
the OD and ID ensures rapid
quenching and the optimum microstructure.
After
heat-treating and quenching, the cylinder is rough machined on the
outer diameter, inner bore, and two end faces to surface finish of
250 RMS. The
cylinder is sent out for finish machining.
