Experimental and simulation possibilities at quality characteristics determination of cast iron and of die castings defects

摘要

The paper deals with application of computer simulation compared with experiment in die castings. (Simulated) microporosity occurence was compared with the possibility of defects detection (visual, X-ray, CT). The results correspond well. In the second part the problems of prediction of mechanical properties on the basis of experiment and simulation are solved. Measurement of velocity of a longitudinal ultrasonic wave in cast iron enables the determination of R_m =f(v_L) in particular castings. It is important to work with patterns found in particular terms of the given foundry.