ANALYSIS OF ROTATIONAL MOULDING PROCESS PARAMETERS AND WARPAGE ON CYCLE TIMES

摘要

The analysis of heat transfer in the rotational moulding process is a non-linear multi-dimensional problem, which involves a number of process conditions and thermal parameters. This study, mostly involves dimensional analysis, the changing effects of the process parameters and conditions on the process times for different processing circumstances. The modelling helps to further identify and understand the dependence of key thermal parameters due to external heating, external cooling, external-internal cooling and warpage on cycle times of the rotational moulding. This study shows that for the external cooling process, the warpage formation for thicker parts does have a considerable influence on prolonging the total cycle time, also the external-internal cooling method significantly improves the cycle time.