Comparison of Thermal Fatigue Test Methods for Die Casting Process: A Finite Element Study

Abstract:

Die casting is a cost-efficient method of forming geometrically complex near net-shaped products with close tolerances and excellent surface finishes.Due to the thermal shock characteristics, a number of test methods have been proposed to understand thermal fatigue behaviours of the die material as real die casting dies experience.This study reveals the differences of these methods by numerical modelling the thermal behaviour of the test specimen. Simplified die casting process is firstlyproposed to facilitate numerical computation. Test specimens are then optimized to be more representative of a real die. From the comparison results, we can conclude that least divergence can be obtained between immersion tests and induction heating based tests while furnace heating based tests would result in low thermal shock effects on the test sample.

• Periodical: Applied Mechanics and Materials (Volume 575)
• Pages: 516-520
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.575.516
• Online since: June 2014
• Authors: Chang Rong Chen*, Yan Wang, Heng An Ou
• Keywords: Die Casting, Finite Element Modeling (FEM), Thermal Fatigue, Thermal Shock

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