Finite Element Analysis of Extrusion Process for Magnesium Alloy Internal Threads with Electromagnetic Induction-Assisted Heating and Thread Performance Research

Materials

Zesheng Ji¹  Meng Liu¹  Rui Fan²  Xingguo Wang² 

[1] Departments of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 100080, China;Departments of Mechanical and Electrical Engineering, Qiqihar University, Qiqihar 161006, China;

关键词: electromagnetic induction;    DEFORM-3D;    Material flow;    hole diameter;    heating temperature;   

DOI  :  10.3390/ma13092170

来源: DOAJ

【 摘 要 】

The casting magnesium alloy AZ91D cannot be extruded at room temperature. This paper presents a process for extruding internal threads using AZ91D heated by electromagnetic induction. The feasibility of the process is verified by finite element simulation and experiments. Using DEFORM-3D to simulate the process of extruding a M12 × 1.25 mm threaded hole by electromagnetic induction-assisted heating, the equivalent stress-strain and material flow law in the process of thread deformation was analyzed and verified by experiments. Three parameters—hole diameter, machine speed and heating temperature—were considered to study the influence of different process conditions on the forming torque. The results show that a heating temperature above 523 K can improve the plasticity of AZ91D. The hole diameter has an important influence on the forming torque. The forming process is not suitable for high-speed machining. The surface metal of the thread formed by this process has a strong deformation layer, which can improve the strength and hardness of the thread.

【 授权许可】

Unknown