Research and Application of Laser Fine Surface Processing Technology: Cleaning and Polishing
SONG Yang1, WANG Haipeng1, WANG Qiang1, MA Chengpeng1, GUAN Yingchun1,2,3
1. School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China;
2. National Engineering Laboratory of Additive Manufacturing for Large Metallic Components, Beijing 100191, China;
3. International Research Institute for Multidisciplinary Science, Beihang University, Beijing 100191, China
In current work, two key techniques in laser fine surface processing—laser cleaning and laser polishing—are introduced in the improvement of material surface quality and performance. On the one hand, laser cleaning technique was used to remove the oxide layer on commercial aluminum alloy (5A06) surface. Results reveal that oxygen content on the laser treated surface is significantly decreased, improving the welding quality and avoiding the formation of porosity in fusion zone. On the other hand, laser polishing process is carried out on the laser-based additive manufactured titanium alloys (TC4 and TC11), showing that as-received Ti-based alloys with surface roughness more than 5μm can be reduced to less than 1μm through laser polishing process. Meanwhile, phase transformation occurs on the laser polished Ti-alloy surfaces, which brings great enhancement of microhardness and wear resistance. Finally, it was furtherly discussed on the composite laser treatment on Ni–Ti shape memory alloy (SMA) surface by combining laser cleaning and polishing technologies.
宋杨1,王海鹏1,王强1,马程鹏1,管迎春1, 2, 3. 激光精细表面制造工艺研究及应用:清洗与抛光[J]. 航空制造技术, 2018, 61(20): 78-86.
SONG Yang1, WANG Haipeng1, WANG Qiang1, MA Chengpeng1, GUAN Yingchun1,2,3. Research and Application of Laser Fine Surface Processing Technology: Cleaning and Polishing. Aeronautical Manufacturing Technology, 2018, 61(20): 78-86.