Energy consumption and surface roughness maps for low and moderate speed machining of Aluminum alloy 2014: An experimental study

IF 1.4 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
U. Shaukat, S. Gohari, T. Molla
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引用次数: 0

Abstract

The rising energy prices and soaring environmental concerns have put an immense pressure on the wide usage of machining processes. The total power consumption during machining includes the power consumed by the machine itself and the power used to remove the material from the workpiece. An accurate prediction of energy consumption during the machining process is the basis for energy reduction. In this study, the specific cutting energy and surface finish for low and moderate-speed orthogonal machining of the aluminum alloy 2014 are evaluated. The measured values for the specific cutting energy and surface roughness are presented as maps on a grid, which is based on the machining parameters including the following: (1) cutting speed and (2) undeformed chip thickness. The specific cutting energy map depicts low energy consumption values of 0.52 J/mm3 for the aluminum alloy 2014 at medium speed machining. The roughness maps depict high roughness values at high cutting speeds. Both maps help in optimizing the machining process to achieve a required surface roughness with minimal energy consumption. A review of a specific cutting energy map demonstrates that energy consumption decreases by increasing the cutting speeds. The decrease in energy consumption at moderate speeds corresponds to the low cutting forces. This potentially happens as a result of thermal softening of the material caused by adiabatic heating. This subsequently leads to an increase in the machinability of the aluminum alloy 2014 at moderate cutting speeds. Furthermore, the decreasing chip thickness and increasing shear angle as a result of increasing the cutting speed confirms the increased machinability of the workpiece at moderate speeds.
铝合金低、中速加工能耗与表面粗糙度图2014:实验研究
能源价格的上涨和环境问题的加剧给机械加工工艺的广泛应用带来了巨大的压力。加工过程中的总功率消耗包括机器本身消耗的功率和用于从工件中去除材料的功率。准确预测加工过程中的能耗是降低能耗的基础。在本研究中,对铝合金2014低、中速正交加工的切削能和表面光洁度进行了评价。比切削能和表面粗糙度的测量值以映射的形式呈现在网格上,网格基于加工参数,包括:(1)切削速度和(2)未变形切屑厚度。特定切削能量图描述了2014铝合金中速加工时的低能耗值为0.52 J/mm3。粗糙度图描绘了高切削速度下的高粗糙度值。这两种图都有助于优化加工过程,以最小的能耗达到所需的表面粗糙度。对特定切削能量图的回顾表明,通过提高切削速度可以降低能耗。在中速下能量消耗的减少与低切削力相对应。这可能是由于绝热加热引起的材料热软化而发生的。这随后导致铝合金2014在中等切削速度下的可加工性增加。此外,随着切削速度的提高,切屑厚度的减小和剪切角的增大证实了在中速下工件可加工性的提高。
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
AIMS Materials Science
AIMS Materials Science MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
3.60
自引率
0.00%
发文量
33
审稿时长
4 weeks
期刊介绍: AIMS Materials Science welcomes, but not limited to, the papers from the following topics: · Biological materials · Ceramics · Composite materials · Magnetic materials · Medical implant materials · New properties of materials · Nanoscience and nanotechnology · Polymers · Thin films.
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