To account for the mutually mechanical actions between mold and casting appropriately by computer numerical model of the stress field and hot-cracking of steel castings, on experimental study has been undertaken on mechanical properties of several kinds of molding sands used of-
ten in production of steal castings for the temperature range from 20℃
to 1300℃. Uniaxial compression stress-strain curves at different tempera-
ture are obtained by a SWX-Ⅱ molding sand testing device, fr...