Numerical simulation technology is an important method which based on the flow and solidification theory of polymer materials for investment casting process to research wax prepared.In this paper

we use experimental method to determine the basic performance parameters of wax.Firstly

use the capillary rheometer to test the rheological properties of wax with the Cross-WLF viscosity model to fit the viscosity model parameters.Secondly

the Netzsch type of differential scanning calorimeter was used to analysis the thermal properties of the wax.Finally

the indirect heat expansion analyzers was used to measure PVT properties of wax.By the performance of wax such as thermal

mechanical

rheological

compressibility

it can achieve numerical simulation during wax injection molding process

which can improve the dimensional accuracy and quality of wax pattern for investment casting

this laid a theoretical basis.