Abstract
In this work, we reported a novel grinding method with high tangential grinding force and low normal grinding force using specially developed grinding tools. The tools were made of flexible composites based on the principle of liquid body armor and the shear thickening mechanism of non-Newtonian fluid. During grinding, abrasive particles are capable of generating a “hydro-cluster effects” under reverse tangential load, which lead to the decreased normal grinding force and the increased tangential grinding force. Hence, workpiece materials are removed under “high-shear and low-pressure” grinding mode. A serial of grinding experiments were carried out on Inconel718. The results showed that the novel grinding tool had an excellent grinding performance on Inconel718 workpieces. The value of surface roughness decreased from Ra 473.7 nm to Ra 153.0 nm under the optimal grinding parameters, i.e., wheel speed of 1 m/s, workpiece speed of 2000 mm/min, and grinding depth of cut of 180 μm. The surface defects of the Inconel718 workpiece were gradually removed. Meanwhile, the uniformed grinding textures were generated. The surface of the grinding tool had residual wear debris, and there was a little loss of grains after 240 grinding cycles.
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Acknowledgments
The authors gratefully acknowledge financial supports by the National Natural Science Foundation of China (Grant No. 51875329 and 51905322), Taishan Scholar Special Foundation of Shandong Province (tsqn201812064), Shandong Provincial Natural Science Foundation, P.R. China (Grant No. ZR2017MEE050), Shandong Provincial Key Research and Development Project, P.R. China (Grants No. 2018GGX103008), Scientific Innovation Project for Young Scientists in Shandong Provincial Universities, China (Grant No. 2019KJB030), and Key Research and Development Project of Zibo City, China (Grant No. 2019ZBXC070).
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Tian, Y., Li, L., Liu, B. et al. Experimental investigation on high-shear and low-pressure grinding process for Inconel718 superalloy. Int J Adv Manuf Technol 107, 3425–3435 (2020). https://doi.org/10.1007/s00170-020-05284-z
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DOI: https://doi.org/10.1007/s00170-020-05284-z