Numerical Simulation on the Filling Process of Rheological Die Casting and Forming Defects Analysis

Author:

Zhang Fan1,Song Nan Nan1,Zhang Jun2,Kang Yong Lin2,Zhu Qiang1

Affiliation:

1. General Research Institute for Non-Ferrous Metals

2. University of Science and Technology Beijing

Abstract

According to semi-solid slurry rheological behavior, an apparent viscosity model of A356 alloy developed based on the Carreau model was established to simulate filling process of rheo-diecasting about automobile shock absorber parts and to compare with conventional liquid filling process. Numerical simulation results showed that the filling process of rheo-diecasting was smooth but difficult to splash, which reduced the tendency of the alloy oxidation and inclusion. Meanwhile, a certain percentage of the primary solid particles precipitated before filling and solidification shrinkage of semi-solid slurry were small. This benefited to reduce or eliminate shrinkage defects of the castings. Compared with conventional liquid die casting process, rheo-diecasting process had unique advantages in reducing the internal defects and improving mechanical properties of castings.

Publisher

Trans Tech Publications, Ltd.

Subject

Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Investigation of the rheological behaviour of technical aluminium with the help of the numerical simulation in QForm;PROCEEDINGS OF INTERNATIONAL CONFERENCE OF YOUNG SCIENTISTS AND STUDENTS “TOPICAL PROBLEMS OF MECHANICAL ENGINEERING” ToPME 2021: Mechanical Engineering Research Institute of the Russian Academy of Sciences (IMASH RAN);2023

2. Studies on die filling of A356 Al alloy and development of a steering knuckle component using rheo pressure die casting system;Journal of Materials Processing Technology;2019-09

3. Microstructure and Property of Rheo-Diecasting Magnesium-Alloy with Forced Convection Mixing Process;Solid State Phenomena;2014-09

4. Simulation on the Thixocasting Process of the Turbocharger Impellers and Selection of the Viscosity Models;Solid State Phenomena;2014-09

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