Improved grinding performance of zirconia ceramic using an innovative biomimetic fractal-branched grinding wheel inspired by leaf vein
Improved grinding performance of zirconia ceramic using an innovative biomimetic fractal-branched grinding wheel inspired by leaf vein
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使用受叶脉启发的创新仿生分形分支砂轮提高氧化锆陶瓷的磨削性能
DOI：
10.1016/j.ceramint.2020.06.070
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发表时间：
2020-10-01
影响因子：
5.2
通讯作者：
Kang, Zhongxiong
中科院分区：
文献类型：
--
作者：
Zhang, Xiaohong;Wang, Zhuoran;Kang, Zhongxiong
本研究设计了一种基于叶片纹理的仿生分形分枝砂轮。激光分枝磨削是一种新型的氧化锆陶瓷结构化加工方法。砂轮的分形结构可以通过提高冷却液的流动效率来改善磨削性能。首先，使用脉冲激光在青铜结合的金刚石砂轮上烧蚀3 mm宽的通道和0.3 mm宽的凹槽，其深度分别为1 mm和0.15 mm。其次，使用仿生分形分支和原始砂轮进行磨削试验。实验结果表明，仿生分形分枝砂轮的法向力降低了12.7%~ 55.8%，切向力降低了8.1%~ 40.3%。磨削力比也明显下降。仿生分形分支砂轮产生更光滑的表面。此外，冷却液可以更容易地沿着通道和沟槽流入磨削区，从而改善砂轮表面的磨损。这表明，仿生分形分枝砂轮由于其分形结构而具有比原砂轮更好的磨削性能。这为基于叶片纹理构造仿生分形分枝砂轮的方法提供了进一步的证据。不同分形角度的磨削性能存在显著差异。
In this study, a type of the biomimetic fractal-branched grinding wheel is designed based on leaf veins. Laser-branched grinding is used as a new structuring method to process zirconia ceramic. The fractal structure of a grinding wheel could improve the grinding performance by increasing the flow efficiency of the coolant. First, a pulse laser was used to ablate a 3-mm-wide channel and 0.3-mm-wide grooves, with respective depths of 1 and 0.15 mm, on a bronze-bonded diamond wheel. Second, a grinding test was performed using the biomimetic fractal-branched and original grinding wheels. The experimental results showed that the normal forces of the biomimetic fractal-branched grinding wheels decreased by 12.7%-55.8%, whereas the tangential force decreased by 8.1%-40.3%. The grinding-force ratio also clearly decreased. The biomimetic fractal-branched grinding wheel produced a smoother surface. In addition, the coolant could flow into the grinding zone more easily along the channel and grooves, thus improving the wear of the grinding wheel surface. This indicates that the biomimetic fractal-branched grinding wheels have better grinding performance than the original wheels owing to their fractal structures. This provides further evidence for a method of constructing biomimetic fractal-branched grinding wheels based on leaf veins. Moreover, different fractal angles showed significant differences in the grinding performance.