Ti-6Al-4V合金微车削加工中表面粗糙度与刀具磨损特性的研究

Investigations on Surface Roughness and Tool Wear Characteristics in Micro-Turning of Ti-6Al-4V Alloy.

作者信息

Aslantas Kubilay, Danish Mohd, Hasçelik Ahmet, Mia Mozammel, Gupta Munish, Ginta Turnad, Ijaz Hassan

机构信息

Department of Mechanical Engineering, Faculty of Technology, Afyon Kocatepe University, 03200 Afyon, Turkey.

Department of Mechanical and Materials Engineering, University of Jeddah, Jeddah 21589, Saudi Arabia.

出版信息

Materials (Basel). 2020 Jul 6;13(13):2998. doi: 10.3390/ma13132998.

DOI:10.3390/ma13132998

PMID:32640567

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7372388/

Abstract

Micro-turning is a micro-mechanical cutting method used to produce small diameter cylindrical parts. Since the diameter of the part is usually small, it may be a little difficult to improve the surface quality by a second operation, such as grinding. Therefore, it is important to obtain the good surface finish in micro turning process using the ideal cutting parameters. Here, the multi-objective optimization of micro-turning process parameters such as cutting speed, feed rate and depth of cut were performed by response surface method (RSM). Two important machining indices, such as surface roughness and material removal rate, were simultaneously optimized in the micro-turning of a Ti6Al4V alloy. Further, the scanning electron microscope (SEM) analysis was done on the cutting tools. The overall results depict that the feed rate is the prominent factor that significantly affects the responses in micro-turning operation. Moreover, the SEM results confirmed that abrasion and crater wear mechanism were observed during the micro-turning of a Ti6Al4V alloy.

摘要

微车削是一种用于生产小直径圆柱形零件的微机械切削方法。由于零件直径通常较小，通过二次加工（如磨削）来提高表面质量可能会有点困难。因此，在微车削过程中使用理想的切削参数以获得良好的表面光洁度非常重要。在此，采用响应面法（RSM）对切削速度、进给率和切削深度等微车削工艺参数进行了多目标优化。在Ti6Al4V合金的微车削中，同时对表面粗糙度和材料去除率这两个重要的加工指标进行了优化。此外，还对切削刀具进行了扫描电子显微镜（SEM）分析。总体结果表明，进给率是显著影响微车削操作响应的突出因素。而且，SEM结果证实，在Ti6Al4V合金的微车削过程中观察到了磨损和月牙洼磨损机制。