METALS AND METAL MATRIX COMPOSITES |
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Research on Machinability of Two-dimensional Ultrasonic Vibration Assisted Turning of TC4 Titanium Alloy |
QU Shengguan†,*, ZHAI Jianshuo†, DUAN Chenfeng, SUN Pengfei, LI Xiaoqiang
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School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China |
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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.
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Published: 25 November 2023
Online: 2023-11-21
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Fund:Basic and Applied Basic Research Foundation of Guangdong Province (2021A1515012394),Guangdong Province Key Area R&D Program,Guangdong Science and Technology Department (2020B090926003),and Zhuhai Industry Education and Research Cooperation Project (ZH22017001200011PWC). |
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