Numerical Simulation of the Impact Type of Input Material Gate in the Injection Step of the 316L Metal Injection Molding Process.

The MIM process is one of the newest methods for producing small and complex metal parts, which makes it possible to economically manufacture sensitive components with high accuracy, uniformity of production, high circulation, good quality and excellent mechanical properties. At this stage, the parameters of mold making, injection machine and molding conditions will have a significant effect on the formation and quality of the piece. Ensuring the accuracy of molding is achieved when the raw material is converted to the final piece after the stages of de-dipping and sintering, after physical and mechanical tests, the imperfection that occurs at the injection and molding step is to emerge. This is while In order to achieve the right conditions, it will take a lot of time and money to make the best possible effort. Numerical simulation of the injection step can provide a virtual space that is close to reality in order to achieve the most suitable conditions and to use the results obtained for the design, fabrication, and production of the piece. In this paper, the effect of the type of input material gate to the mold cavity was studied in simulation aria and the parameters of filling, cold welding line, air traps, void, Apparent defects, uniformity of powder concentration and shrinkage for 316L feedstock stainless steel powder were studied and the most suitable The type of input gate was selected. For 3D design of CATIA software and simulation of the injection process using Moldex3D software.