Three dimensional non-linear coupled thermo-mechanical FEM analysis of the dimensional accuracy for casting dies in Rapid tooling

摘要

In Rapid Tooling (RT), all of the forming stages influence the dimensional accuracy of the die. The forming stages include slicing the CAD model to the STL file, making the prototype using an RP machine, obtaining the ceramic mold and transforming the ceramic mold to metal die. In RT, the precise casting that is to transform the ceramic mold to a metal die plays a very important role in the dimensional accuracy of the die. The dimensional accuracy of the casting die during the solidification process is analyzed using a three Dimensional (3-D) non-linear coupled thermo-mechanical model in this paper.