Optimization of Machining Parameters During Turning of Tungsten Heavy Alloys Using Taguchi Analysis

C. Sagar, A. Priyadarshini, A. Gupta
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Abstract

Tungsten heavy alloys (WHAs) are ideally suited to a wide range of density applications such as counterweights, inertial masses, radiation shielding, sporting goods and ordnance products. Manufacturing of these components essentially require machining to achieve desired finish, dimensions and tolerances However, machining of WHAs are extremely challenging because of higher values of elastic stiffness and hardness. Hence, there is a need to find the right combination of cutting parameters to carry out the machining operations efficiently. In the present work, turning tests are conducted on three different grades of WHAs, namely, 90WHA, 95WHA and 97WHA. Taguchi analysis is carried out to find out the most contributing factor as well as optimum cutting parameters that can give higher metal removal rate (MRR), lower surface roughness and lower cutting forces. It is observed that feed rate is the most prominent factor with percentage contribution varying in the range of 46–61%; whereas cutting speed has least effect on cutting forces, especially for 95WHA and 97WHA. Optimum values of forces, surface roughness and MRR and the corresponding machining parameters to be taken are presented. It is observed that 95W WHA has slightly better machinability as compared to other two grades since it gives highest MRR with lowest cutting forces and surface roughness values. The optimum machining parameter settings, so predicted, can be utilized to machine WHAs efficiently for manufacture of counter weights and inertial masses used in aerospace applications.
用田口分析法优化重钨合金车削加工参数
钨重合金(WHAs)非常适合广泛的密度应用,如平衡物,惯性质量,辐射屏蔽,体育用品和军械产品。这些部件的制造基本上需要加工以达到所需的光洁度、尺寸和公差。然而,由于弹性刚度和硬度值较高,加工waa极具挑战性。因此,需要找到正确的切削参数组合,以有效地进行加工操作。在本工作中,对90WHA、95WHA和97WHA三种不同等级的wha进行了车削试验。通过田口分析,找出最大的影响因素和最佳切削参数,以获得更高的金属去除率(MRR)、更低的表面粗糙度和更低的切削力。结果表明,进给量是最显著的影响因素,贡献率在46% ~ 61%之间;而切削速度对切削力的影响最小,尤其是95WHA和97WHA。给出了力、表面粗糙度和MRR的最优值以及相应的加工参数。与其他两个牌号相比,95wwha具有稍好的可加工性,因为它具有最高的MRR和最低的切削力和表面粗糙度值。所预测的最佳加工参数设置可用于制造航空航天应用中的配重和惯性质量。
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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