Heat Flow Analysis in Die Casting Die with Single Cooling Channel

Abstract

  The Cyclic Steady Heat Balance Method (CSM) is proposed to calculate temperature and heat of a die casting die in cyclic steady state without repeated numerical calculations. In this method the mean cavity side surface temperature during casting and that during spray cooling are studied, assuming that a stepwise temperature change takes place in the cavity. CSM is applied to a simple two-dimensional shaped die with a waterline type cooling channel. The cooling condition is given and mean surface temperature and heat are calculated. The results are used to judge whether the strength of cooling, the cooling time and the pitch of a cooling channel etc. are appropriate. The high accuracy of the proposed method was confirmed by comparing with cyclic numerical calculations. The CPU time of the former is one tenth or less of the latter.