doi: 10.3850/978-981-11-0749-8_711
Post-Treatment Process of Additive Manufacturing for Intramedullary Nails by Ultrasonic Vibration Machining, Abrasive Flow Machining, and Electropolishing Technology
Fu-Chuan Hsu1, Tsung-Pin Hung1, Yunn-Shiuan Liao2, Shih-Ming Wang3, Ming-Chyuan Lu4, Ying-Cheng Lu1 and Ho-Chung Fu5
1Metal Industries Research & Development Centre
2National Taiwan University, Taipei, Taiwan
3Chung Yuan Christian University, Taoyuan, Taiwan
4National Chung Hsing University, Taichung, Taiwan
5National Kaohsiung University of Applied Sciences, Kaohsiung, Taiwan
Abstract
A post-treatment process was developed to improve the surface roughness and shape accuracy of titanium intramedullary nails from additive manufacturing. Owning to a surface roughness of up to Ra = 12 µm after additive manufacturing, ultrasonic vibration assisted machining and electropolishing were employed to decrease the surface roughness and control the shape accuracy. Abrasive flow machining was also adopted to reduce the inner hole surface roughness. The experimental results indicated that the surface roughness was reduced to Ra = 0.1-0.2 µm with good shape accuracy.
Keywords: Additive manufacturing, Intramedullary nail, Ultrasonic machining, Abrasive flow machining, Electro-polishing, Surface roughness.
