Methodology of Uniform Filling Control for Vacuum Casting

Abstract

Aiming at solving the problem that results from flow instability two-component materials, uneven density and thus affects the product quality in constant pressure casting stage. Based for theory of polymer materials and hydrodynamic, establishing mathematic model of filling stage and proposing a uniform filling strategy through analysis of geometric characteristics of different mold, set pressure regulation curve in order to ensure uniform filling and stable flow for two-component materials in pressure casting stage. The experiment shows that the proposed method can actually ensure uniform filling, but also eliminate the product defects such as insufficient injection and burr, thus presenting a feasible solution to the problem of flow instability two-component materials and uneven density.