Computer and laboratory research of condition of MIM 4140 alloy after injection molding and sintering

The results of a computer simulation of an injection molding process in a mold (changing of liquid phase of melt during filling and crystallization) and laboratory research of condition of MIM 4140 alloy after heat treatment are presented in the article. Color contours showing a value of linear shrinkage and porosity of a casting material before heat treatment are obtained. It is determined that maximum linear shrinkage and porosity occur in an area of the casting bottom. A general picture of condition of inner layers of the castings material before and after heat treatment is given.