Yu Zhong, Wang Jiahuan, Du Jiahui, Shao Lanying, Lyu Binghai
College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China.
Materials (Basel). 2025 Apr 29;18(9):2033. doi: 10.3390/ma18092033.
Shear-thickening polishing (STP) technology achieves efficient processing by modulating the non-Newtonian properties of the slurry, while temperature has an important effect on its rheological behavior. To reveal the effect of temperature on material removal rate (MRR) during the shear-thickening polishing process, this study measured the rheological profiles of the shear-thickening polishing slurry (STPS) at different temperatures and observed the rheological behavior using a high-speed video camera, as well as monitored the changes in the polishing force exerted on the workpieces, MRR, and the surface roughness. Experimental data show that the peak viscosity of the slurry in the shear-thickening state decreases from 0.81 Pa·s to 0.49 Pa·s as the temperature increases from 30 °C to 50 °C. High-speed video observations show that the wavy solid layer in the thickening area diminishes with increasing temperature, the distribution area shrinking, and nearly vanishing at 50 °C. When the temperature rises from 30 °C to 40 °C, the average polishing force at 30 min decreases from 25.3 N to 22.6 N by 10.6%. MRR decreases from 33.5 nm/min to 7.9 nm/min by 75.5%. The decrease in MRR is much greater than the polishing force. This study provides an experimental basis for the effect of temperature on STP.
剪切增稠抛光（STP）技术通过调节研磨液的非牛顿特性实现高效加工，而温度对其流变行为有重要影响。为揭示温度对剪切增稠抛光过程中材料去除率（MRR）的影响，本研究测量了不同温度下剪切增稠抛光液（STPS）的流变曲线，并用高速摄像机观察其流变行为，同时监测施加在工件上的抛光力、MRR和表面粗糙度的变化。实验数据表明，随着温度从30℃升高到50℃，处于剪切增稠状态的研磨液的峰值粘度从0.81Pa·s降至0.49Pa·s。高速视频观察表明，增稠区域的波浪状固体层随着温度升高而减少，分布区域缩小，在50℃时几乎消失。当温度从30℃升至40℃时，30分钟时的平均抛光力从25.3N降至22.6N，降幅为10.6%。MRR从33.5nm/分钟降至7.9nm/分钟，降幅为75.5%。MRR的下降幅度远大于抛光力。本研究为温度对STP的影响提供了实验依据。
