Abstract: Due tothe superior physical and chemical properties, titanium alloys are widely used in various high-precision fields such as aerospace, ships, and weapon preparation. However, how to overcome its high specific heat capacity and low thermal conductivity to achieve high-quality and efficient processing has also become a hot issue in the field of machining. The two-dimensional ultrasonic vibration turning process has the cha-racteristics of intermittent turning, which can significantly improve the turning effect of difficult-to-machine materials such as composite materials, brittle materials and ceramic materials. Therefore, the two-dimensional ultrasonic vibration turning process was used to turn the TC4 titanium alloy, and compared with the traditional turning in terms of different processing properties. The experimental results demonstrated that the two-dimensional ultrasonic vibration turning process can effectively improve the machining quality of the workpiece, reduce the turning force during the cutting process, reduce the friction coefficient between the chip contact sliding area and the adhesive area, improve the tool life and have good chip breaking ability. In addition, ultrasonic vibration turning will increase the degree of work hardening of the workpiece surface, refine the surface grains, and increase the residual stress on the workpiece surface.
通讯作者:
* 屈盛官,华南理工大学机械与汽车工程学院教授、博士研究生导师、高级工程师。1989年太原工业大学内燃机专业本科毕业,2001年华中科技大学动力机械及工程专业硕士毕业,2005年华南理工大学机械与汽车工程学院机械工程专业博士毕业后到华南理工大学工作至今。目前主要从事高性能金属材料的制备、精密成形及其装备制造技术,难加工材料的切削加工技术,金属新材料成形过程的数值模拟与动态仿真、机械零部件的摩擦磨损等。发表论文200余篇,包括RSC Advances、Material and Design、International Journal of Advanced Manufacturing Technology、International Journal of Fatigue等。qusg@scut.edu.cn
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2023, Vol. 37 
