Transient heat transfer and thermal stress analysis of crucible in magnesium alloy furnace

ZHENG Lijun, PAN Baisong, ZHANG Shenghong, CHE Liangsong, LIU Weijiang
(College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

Abstract: Aiming at the service life of crucible in a magnesium alloy furnace is short, and the failure would happen more likely in crucible conjunctions, using finite element method(FEM), temperature distribution of the crucible in a magnesium alloy furnace during heating procedure was obtained by transient heat transfer analysis. Then comparison between simulation result and experimental result was made, based on which thermal stress on crucible conjunctions at the end of heating procedure was worked out by thermalstructure coupling. The results indicate that the analysis is accurate and reliable since the thermal analysis results well fit the experimental results and that thermal stress on crucible conjunctions has larger fluctuation and stress concentration.
Key words: crucible; finite element methood(FEM); temperature distribution; transient heat transfer; thermal stress