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International Journal of Abrasive Technology (3 papers in press)
Water dissolution polishing for potassium dihydrogen phosphate crystal without abrasive using sol-gel tool by Yun Shen, Jing Lu, Xiaobin Lv Abstract: Potassium dihydrogen phosphate (KDP) crystal is an excellent nonlinear optical material, which is widely used in nonlinear optics. The KDP crystal possessing the properties of moisture absorption and deliquescence belongs to soft and brittle material, regarded as extremely difficult to machine by the conventional methods. In this paper, a novel KDP crystal polishing technology has been proposed, which used sol-gel (SG) tool for water dissolution finishing of KDP crystal without abrasives. The surface morphology is detected by 3D video microscope, and the surface roughness is detected by 3D optical profiler. Results indicate that the new method can obtain smooth surfaces efficiently and quickly. After polishing for 10 minutes, the original surface roughness is reduced from Ra 695.7 nm to Ra 17.8 nm, and the surface is smooth without scratches. This KDP crystal polishing method has broad prospects. Keywords: sol-gel tool; KDP crystal; water dissolution; polishing; non-abrasive; surface roughness. DOI: 10.1504/IJAT.2022.10049780
Metal finishing using manual grinding with lamellar sanding wheels as grinding tools. by Katia Cristiane Gandolpho Candioto, Kauan Costa Silva, Barbara Sabine Linke Abstract: Flap drums (Lamellar sanding wheels) are commercial grinding tools used in machining industrial processes such as metal polishing, deburring, and cleaning. This work presents the behavior of flap drums in metal finishing using a manual hand-held power tool. Different factors such as material interaction, the volume of material removed, life cycle, wear, and aggressiveness of these abrasive tools were studied to formalize the knowledge related to the influence of grit size in this process. For this purpose, performance tests were carried out with two commercial flap drums, both of the same grit and binder, but different particle sizes, using a manual hand-held power tool. The experiments were carried out on samples of stainless and carbon steel and the performance was measured through the relationship between the mass loss of the sample and tool, as well as its surface roughness. The results allowed to understand the effectiveness of the tools acting on different materials. Keywords: Abrasives; Finishing process; Hand-held grinding; Manual tool; Surface roughness; Lamellar sanding wheel; Flap drum. DOI: 10.1504/IJAT.2022.10050750
Study on method and experiment for blisk by robotic abrasive belt grinding by Kangkang Song, Guijian Xiao, Shulin Chen, Xuetao Liu, Yun Huang Abstract: Aiming at the difficulty of ensuring the consistency of batch processing profile, and the difficulty of improving the surface grinding quality and grinding efficiency in the precision grinding of aero-engine blisk, a precision and high-efficiency grinding method is proposed for the blisk by robotic abrasive belt grinding. In this paper, the manufacturability of the robotic belt grinding of the blisk is analysed, the experimental device and method of robotic abrasive belt grinding of the blisk are introduced in detail, and the experimental results is analysed and discussed. The experimental results show that the combination of UG software and RobotStudio software can effectively solves the problems of low efficiency of online programming, poor accuracy, and uneven material removal. Compared with manual grinding, the grinding efficiency is increased by 57.3%. The roughness of the uniformly distributed areas in the experiment are all below Ra 0.4 ?m, the average surface roughness can reach Ra 0.31 ?m, and the standard deviation is 0.05 ?m. After robotic abrasive belt grinding, there is no damage to blisk body, and the grinding area is smooth and has a natural transition. The blisk blades after grinding have good consistency, which effectively removes milling cutter marks and meets the requirements of machining profile accuracy. Keywords: aero-engine blisk; robot machining; abrasive belt grinding; ABG; grinding quality. DOI: 10.1504/IJAT.2022.10049931