Morphology Simulation and Experimental Study on Micro-grinding of Nickel-Based Single Crystal Superalloy

doi:10.12068/j.issn.1005-3026.2020.07.007

Abstract

Abstract: Based on the regularity of geometric kinematics for a single abrasive micro-grinding and the minimum function， the global abrasive micro-grinding trajectory expression was deduced. The envelope function set of a micro-grinding workpiece surface was established， the simulation prediction model of grinding processing microstructures was obtained， and the correctness of the model was verified by conducting the micro-grinding processing experiment of DD5 nickel-based single crystal superalloy. The experimental results showed that the simulated predicted micro-morphology has similar characteristics to those of the actual micro-morphology. The error between the simulated predicted line contour height and the actual machined micro-grinding line contour height is 0.2~0.3μm. The comparison results of surface roughness under different grinding parameters also showed that the prediction model is consistent with the experimental results.

Key words: micro-grinding, morphology simulation, micro-grinding trajectory, surface roughness, nickel-based single crystal superalloy

CLC Number:

TG584

GONG Ya-dong， SU Zhi-peng， SUN Yao， JIN Li-ya. Morphology Simulation and Experimental Study on Micro-grinding of Nickel-Based Single Crystal Superalloy[J]. Journal of Northeastern University Natural Science, 2020, 41(7): 949-954.

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