Processing of Ti-6Al-4V titanium alloy by laser and electrochemical machining

Yujie Gui; Yufeng Wang; Yong Yang; Wenwu Zhang; Aibing Yu

doi:10.1117/12.2646427

16 December 2022 Processing of Ti-6Al-4V titanium alloy by laser and electrochemical machining

Yujie Gui, Yufeng Wang, Yong Yang, Wenwu Zhang, Aibing Yu

Author Affiliations +

Proceedings Volume 12501, Seventeenth National Conference on Laser Technology and Optoelectronics; 1250106 (2022) https://doi.org/10.1117/12.2646427
Event: Seventeenth National Conference on Laser Technology and Optoelectronics, 2022, Shanghai, China

Abstract

With the increasing application of titanium alloys (Ti-6Al-4V) in aero engineering, great challenges have been posed to improve the surface quality and machining accuracy of titanium alloy. Titanium alloy is difficult to be processed. The existing processes suffer from thermal damage or low-efficiency. In this paper, laser and shaped tube electrochemical machining (Laser-STEM) has been employ to process titanium alloy, in which both the laser beam and electrolyte jet are guided to the machining zone through the inner hole of a specially designed tubular electrode. The processing characteristics of TC4 titanium under different processing voltages, laser power, and feeding rates were experimentally studied, while using sodium nitrate as the electrolyte. Influences of key process parameters on the machining profile size and surface roughness was explored. Results showed that the deep and narrow grooves with a good surface profile can be obtained under the voltage of about 20 V, laser power of 3 W, and electrode feeding rate of 1.8 mm/min. Finally, the rectangular wave slot with an average width of 1.6 mm and depth of 0.759 mm was machined by a layer-by-layer laser and electrochemical machining method. The feasibility of laser and shaped tube electrochemical hybrid machining of TC4 titanium alloy with high precision and efficiency has been verified, which laid a foundation for the application of this process in aerospace manufacturing.

Citation Download Citation

Yujie Gui, Yufeng Wang, Yong Yang, Wenwu Zhang, and Aibing Yu "Processing of Ti-6Al-4V titanium alloy by laser and electrochemical machining", Proc. SPIE 12501, Seventeenth National Conference on Laser Technology and Optoelectronics, 1250106 (16 December 2022); https://doi.org/10.1117/12.2646427

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KEYWORDS

Titanium

Laser processing

Electrodes

Surface roughness

Corrosion

Pulsed laser operation

Diffusion

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