Transactions of Materials and Heat Treatment

Title：Influence of welding line on magnesium alloy ZK60 square tube in shunt extrusion

Authors： Ma Jun Liang Shenglong

Unit： Suzhou Institute of Industrial Technology

KeyWords： magnesium alloy ZK60 welding line shunt extrusion Deform-3D

ClassificationCode：

year,vol(issue):pagenumber：2016,41(7):46-50

Abstract：

Welding line quality of shunt extrusion profiles is a key factor influencing the combination properties of the profile. The parameters such as billet temperature, stress and strain，welding stress, and welding pressure that are impossible to be measured onsite can be obtained by finite element method. Therefore, the influences of welding line position on a special magnesium alloy ZK60 square tube in porthole extrusion were studied by FEM numerical analysis and experiment. The research shows that the loading decreases about 8% when the welding line locates in the middle of the side, which is benefit for profile extrusion. However, the welding pressure and the welding temperature increase by 9.7% and about 6-15 ℃ respectively when the welding line locates in the corner position, which is advantageous to refine material grain size and improves the welding quality and material mechanics performance of magnesium alloy ZK60 square tube. Furthermore, the experiment results are in good agreement with simulation results.

Funds：

江苏高校品牌专业建设工程资助项目（PPZY2015 B186）

马俊（1973-），男，硕士，副教授

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