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分流挤压型材的焊缝质量是影响型材综合性能的关键因素。基于有限元法可以获取挤压过程中坯料温度、应力应变、焊合压力等生产现场难以测量的物理参数的优势,针对不同焊合位置对某规格ZK60镁合金方管分流挤压过程的影响规律进行了有限元仿真分析和实验研究。研究发现:焊缝位于边中间可有效降低载荷约8%,型材挤压更省力;焊缝位于直角处可分别提升9.7%的焊合压力和约6~15℃的焊合温度,有助于细化金属晶粒和提高ZK60镁合金方管的焊缝质量和型材整体的力学性能。实验研究和模拟结果吻合良好。
The quality of the weld in shunt extruded sections is a key factor affecting the overall performance of the sections. Based on the finite element method, the advantages of physical parameters such as temperature, stress and strain, and welding pressure of billet during the extrusion process, which are difficult to measure at the production site, can be obtained. According to the influence of welding position on the triage and extrusion process of square tube of ZK60 magnesium alloy The finite element simulation analysis and experimental research were carried out. It is found that the welding seam located in the middle of the edge can effectively reduce the load by about 8%, and the profile extrusion is more labor-saving. The welding seam can be raised by a welding pressure of 9.7% at a right angle and a welding temperature of about 6-15 ° C respectively, Metal grains and improve the ZK60 magnesium alloy square tube weld quality and the overall mechanical properties of the profile. The experimental results are in good agreement with the simulation results.