... area of cement mill,rotary kiln,shipbuilding,metallurgy,mine,sugar mill,powder plant,rail road,engine bed and so ... parts,marine steel casting parts,sugar mill machinery parts with carbon steel or low alloy steel.The casting parts ... temperaturePorosityMelt temperature is too highNon-uniform cooling rateSand has low permeabilityHot tearingNon-uniform cooling rateSurface projectionsErosion of sand mold ...