A Novel Influence of Coated and Uncoated Carbon Boron Nitride on Material Removal Rate for Al-Si12Cu Alloy Using CNC Turning

Q4 Materials Science

NanoWorld Journal Pub Date : 2023-10-06 DOI:10.17756/nwj.2023-s3-036

N. A. W. O. J. ournal, Kasturi Sumanth, Rathinavelu Venkatesh

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Abstract

The prime aim of this experimental study is to find the material removal rate (MRR) of CBN (Carbon boron nitride) coated and uncoated insert on Al-Si12Cu alloy via a novel computer numeric controlled (CNC) turning center. Al-Si12Cu alloy of 50 mm diameter and 200 mm length was utilized for this study. The samples (N = 20) are turned by CBN coated insert (experimental group) and the uncoated insert is considered as the control group to machining another 20 samples (N = 20). The weight of Al-Si12Cu alloy on both group samples was measured before and after the turning process via a digital weighing machine followed by MRR was calculated as per ASTM standard with 80% G-power calculation. Based on the experimental test results of MRR for the turned Al-Si12Cu alloy by CBN coated insert showed 2.762 mm 3 /min and 1.781 mm 3 /min were found gives a significant value of 0.001 (p < 0.05). There is a significant difference between the two groups considered. The two-tailed significance value obtained is 0.001 (p < 0.05) which is statistically significant compared to the uncoated insert showing the adequacy of the design matrix and there is a significant difference have been between the two groups. Within the limitations of this experimental study, the Al-Si12Cu alloys were turned via CBN coated insert has played a prominent role in the enhancement of MRR rather than the samples turned by the uncoated insert.

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有涂层和无涂层氮化硼碳对使用 CNC 车削加工 Al-Si12Cu 合金的材料去除率的新影响

本实验研究的主要目的是通过新型计算机数控（CNC）车削中心，找出在 Al-Si12Cu 合金上涂覆和未涂覆 CBN（氮化硼）刀片的材料去除率（MRR）。本研究使用了直径 50 毫米、长度 200 毫米的 Al-Si12Cu 合金。使用 CBN 涂层刀片车削样品（实验组）（N = 20），未涂层刀片作为对照组，加工另外 20 个样品（N = 20）。两组样品在车削前后都通过数字称重仪测量了 Al-Si12Cu 合金的重量，然后按照 ASTM 标准计算了 MRR，并计算了 80% 的 G 功率。根据 CBN 涂层刀片车削 Al-Si12Cu 合金的 MRR 实验测试结果，发现 2.762 mm 3 /min 和 1.781 mm 3 /min 的显著值为 0.001 (p < 0.05)。两组之间存在明显差异。获得的双尾显著性值为 0.001（p < 0.05），与无涂层插入物相比具有统计学意义，表明设计矩阵的充分性，两组之间存在显著差异。在本实验研究的限制条件下，通过 CBN 涂层刀片车削的 Al-Si12Cu 合金比通过未涂层刀片车削的样品在提高 MRR 方面发挥了显著作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

NanoWorld Journal Materials Science-Polymers and Plastics

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