Design and Optimization of Runner and Gating System for Magnesium Piston Casting through Numerical Simulation

Abstract

As the lightest metal, magnesium is used as the basis for constructional alloys. A well-designed runner and gating system is very important to obtain a good quality die casting. Two types of runner and gating system for magnesium piston are designed and analyzed based on CAE software. The filling process, temperature distribution and quality predication are given respectively. Combined the solidification law, the distribution of the gas hole is effectively predicted and an optimized design is chosen. The research shows that trapezoidal gating system is better than point gating system for magnesium piston. Numerical simulation can be considered as the most cost-effective way in optimization of the runner and gating system.