SIMULATION TESTS TO FORECAST SELECTED PROPERTIES OF THIN-WALLED CASTS OF DUCTILE IRON DOMES

Thin-walled dome casts (hemispheres) with a wall thickness of 4.2 and 10.3 mm made of ductile iron underwent simulation tests within the frame of forecasting the tendency to create residual stresses, casting defects, the shaping of structures and strength properties of alloy in the walls of casts. The aim was to determine whether properties of casts would allow further production procedures and especially coating the surface with rubber by the method of high pressure rubber curing. It was stated that with the use of the developed technology the threat of possible defects in casts is insignificant and strength properties are sufficient to safely conduct further production operations.

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