Prediction and Prevention of Distortion for the Thin-Walled Aluminum Investment Casting

Yong Zhen Liu; Guo Ming Cui; Jian Min Zeng; Wu Kui Gan; Jin Bo Lu

doi:10.4028/www.scientific.net/AMR.915-916.1049

Paper Titles

Interface Diffusion of Composite Rolling AZ31 Magnesium Alloy Sheet Clad by Al Foil during Annealing
p.1023

OFAT Experimental Study of Laser Direct-Part Marking of Data Matrix Symbols on Titanium Alloys
p.1027

Optimization Time for Bending Extruded Aluminum Profile
p.1032

Phase-Field Simulation Studies of Multiple Grains Coupled with Force Flow Field
p.1038

Prediction and Prevention of Distortion for the Thin-Walled Aluminum Investment Casting
p.1049

Solving Measures and Application of Super-Long Structure under Temperature Problem
p.1054

Study on Thermal Decomposition Characteristics of Magnesium Salt Flame Retardants
p.1058

The Characteristics of Trivariate Vector-Valued Super-Wave Wraps and Applications in Materials Engineering
p.1062

The Effect of Inlet Conditions on Particle Deposition in Axial Flow Compressor
p.1066

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 915-916Prediction and Prevention of Distortion for the...

Prediction and Prevention of Distortion for the Thin-Walled Aluminum Investment Casting

Abstract:

Investment casting is one of main precision casting processes to realize near net shape castings. For the castings with thin-walled cross section or complicated shape, it is easy to generate casting stress such as thermal stress, mechanical stress and phase transformation stress, resulting in casting deformation due to the uneven cooling and hindered contraction. Once three-dimensional deformation is formed, it is very hard to correct. In this paper the finite element method (FEM) was used to analyze the stress and deformation of thin-walled lost wax casting. The results show that the temperature and stress distributions are uneven in the casting and the tendency to deform is higher even with insulating shell mold. And based on the results, the technical measures of adding supporting ribs are adopted to restrain deformation. The practice of volume production indicates that no casting was rejected due to deformation defects.