Internally cooled tools as an innovative solution for sustainable machining: Temperature investigation using Inconel 718 superalloy

IF 4.6 2区 工程技术 Q2 ENGINEERING, MANUFACTURING
Gustavo Henrique Nazareno Fernandes , Eduardo Ramos Ferreira , Pedro Henrique Pires França , Lucas Melo Queiroz Barbosa , Edmundo Benedetti Filho , Paulo Sérgio Martins , Álisson Rocha Machado
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引用次数: 0

Abstract

Machining is a process that involves intense heat generation at localized points within the tool-chip interface. This leads to elevated temperatures, which can be detrimental to cutting tools. This issue becomes even more crucial when dealing with superalloys like Inconel 718, as they exhibit high shear strength and good creep resistance. Consequently, a significant amount of energy is expended, increasing the cutting temperature. Until now, the primary technique employed to address this issue has been using Cutting Fluids (CFs). In machining, a portion of costs is attributed to fluid handling. It also contains harmful elements that can pose health risks, potentially leading to conditions such as cancer. Moreover, the toxic components can contribute to environmental degradation when improperly disposed of. Therefore, this study proposes an innovative cooling technique called Internally Cooled Tools (ICTs). The ICTs employ an internally circulating coolant fluid through closed cooling channels within the cutting tools, eliminating fluid dispersion into the atmosphere. The main objective was to compare the performance of ICTs in controlling the tool-chip interface temperature during Inconel 718 turning using hard metal tools. For this purpose, a complete factorial experimental design (25) was utilized, with the response variable being the temperature measured by the tool-work thermocouples technique. Beyond that, a sustainable assessment was performed using the Pugh Matrix method. Many key sustainable factors were evaluated related to three atmospheres, cutting fluids in abundance – CFA, dry machining, and ICT. The data base used was a depth literature investigation together with results found in this work. The main findings of this entire work demonstrated that an increase in cutting parameters corresponded to an increase in temperature, as anticipated. TiNAl coating reduced the temperature by up to 10% compared to uncoated tools. Similarly, applying ICTs led to temperature reductions of up to 17% compared to dry machining conditions. The Pugh Matrix made considering 12 factors showed that ICT (14 points) was the most sustainable lubri-cooling method in comparison to CFA (3) and DM (5). Ultimately, ICTs showed to be a promising eco-friendly method. It outperformed conventional methods, showcasing a remarkable heat dissipation capacity. As a result, further studies are warranted to delve deeper into this promising approach.

内部冷却工具作为可持续加工的创新解决方案:使用铬镍铁合金 718 超级合金进行温度调查
加工过程中,刀具与芯片界面的局部位置会产生大量热量。这会导致温度升高,从而对切削工具造成损害。在加工铬镍铁合金 718 等超级合金时,这个问题变得更加重要,因为它们具有很高的剪切强度和良好的抗蠕变性。因此,需要消耗大量能量,提高切削温度。迄今为止,解决这一问题的主要技术是使用切削液(CF)。在机械加工过程中,一部分成本来自于切削液的处理。此外,切削液中还含有对健康有害的元素,有可能导致癌症等疾病。此外,如果处理不当,有毒成分还会导致环境恶化。因此,本研究提出了一种创新的冷却技术,称为内部冷却工具(ICTs)。ICTs 采用内部循环冷却液,通过切削工具内的封闭冷却通道进行冷却,从而避免了冷却液散逸到大气中。主要目的是比较 ICT 在使用硬金属刀具车削 Inconel 718 时控制刀具-芯片界面温度的性能。为此,采用了完全因子实验设计 (25),响应变量是通过工具-工作热电偶技术测量的温度。此外,还使用 Pugh Matrix 方法进行了可持续发展评估。评估了与三种气氛、大量切削液(CFA)、干式加工和信息与通信技术有关的许多关键可持续因素。所使用的数据基础是深入的文献调查和本工作中发现的结果。整个工作的主要结果表明,正如预期的那样,切削参数的增加会导致温度升高。与未涂层的刀具相比,TiNAl 涂层最多可降低 10%的温度。同样,与干燥的加工条件相比,使用信息和通信技术可使温度降低 17%。考虑了 12 个因素的 Pugh 矩阵显示,与 CFA(3 分)和 DM(5 分)相比,ICT(14 分)是最可持续的润滑冷却方法。最终,信息和通信技术被证明是一种很有前途的生态友好型方法。它的性能优于传统方法,具有显著的散热能力。因此,有必要对这一有前途的方法进行更深入的研究。
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
CIRP Journal of Manufacturing Science and Technology
CIRP Journal of Manufacturing Science and Technology Engineering-Industrial and Manufacturing Engineering
CiteScore
9.10
自引率
6.20%
发文量
166
审稿时长
63 days
期刊介绍: The CIRP Journal of Manufacturing Science and Technology (CIRP-JMST) publishes fundamental papers on manufacturing processes, production equipment and automation, product design, manufacturing systems and production organisations up to the level of the production networks, including all the related technical, human and economic factors. Preference is given to contributions describing research results whose feasibility has been demonstrated either in a laboratory or in the industrial praxis. Case studies and review papers on specific issues in manufacturing science and technology are equally encouraged.
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