纳米粉末混合放电微铣削哈氏合金c276的性能特性研究

IF 2.7 4区 工程技术 Q2 ENGINEERING, MANUFACTURING
Souradeep Dutta, Deba Kumar Sarma, Hrishikesh Dutta
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引用次数: 0

摘要

摘要粉末混合电火花微铣削(EDMM)是一种新型的电火花加工工艺,通过旋转的微刀具,通过数控编程生成复杂的三维微特征。它提高了材料去除率(MRR),降低了刀具磨损率(TWR),并提供了优越的表面特性。本研究研究了粉末浓度、间隙电压和电容对添加石墨烯纳米粉末的哈氏c276 EDMM的显微硬度(MH)、材料去除率(MRR)、刀具磨损率(TWR)、表面粗糙度(SR)、过切(OC)、锥度角(TA)和表面形貌的影响。0.25 g/L粉末浓度显著提高了MRR,显著降低了TWR。与普通电介质相比,0.4 g/L浓度的SR急剧降低。发现普通介质体系具有较低的OC和较高的TA。在这两种情况下,使用场发射扫描电子显微镜(FESEM)来检查铣削微通道的表面形貌和重铸层。当浓度为0.4 g/L时,微通道的MH提高了2.3倍。能量色散x射线光谱(EDS)证实了材料从电介质和石墨烯纳米粉末迁移到hc276上的研磨微通道。关键词:电容、电浓度、放电、微磨隙电压、石墨烯纳米粉末、哈氏合金c276致谢作者要感谢印度奥里萨邦布巴内斯瓦尔矿产与材料技术研究所(csir - imt)的Bibhuranjan Nayak博士为FESEM设施所做的贡献。披露声明作者未报告潜在的利益冲突。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation of performance characteristics amid nano powder mixed electrical discharge micro-milling on Hastelloy C 276
AbstractPowder mixed electrical discharge micro-milling (EDMM) has been introduced as a novel variant of EDM operation, which can generate complex 3D micro features by CNC programming through the rotating micro-tool. It enhances the material removal rate (MRR), decreases the tool wear rate (TWR) and provides superior surface characteristics. The present work investigates the impact of powder concentration, gap voltage, and capacitance on the micro-hardness (MH), material removal rate (MRR), tool wear rate (TWR), surface roughness (SR), overcut (OC), taper angle (TA) and surface morphology during graphene nano powder added EDMM of Hastelloy C 276. The powder concentration of 0.25 g/L significantly enhanced the MRR and decreased the TWR, respectively. A drastic reduction in SR has been observed for 0.4 g/L concentration compared to plain dielectric. Lower OC and higher TA has been found for plain dielectric system. Field emission scanning electron microscopy (FESEM) is used in both cases to examine the surface morphology and recast layer of the milled micro-channels. The MH of the milled micro-channels is raised by 2.3 times at 0.4 g/L concentration. Energy-dispersive X-ray spectroscopy (EDS) confirms the migration of materials from the dielectric and graphene nano powder to the milled micro-channels on HC 276.Keywords: Capacitancedielectric concentrationelectrical discharge micro-millinggap voltagegraphene nano powderHastelloy C 276 AcknowledgmentsThe authors would like to acknowledge Dr. Bibhuranjan Nayak, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT) Bhubaneswar, Orissa, India for the FESEM facility.Disclosure statementNo potential conflict of interest was reported by the author(s).
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来源期刊
Machining Science and Technology
Machining Science and Technology 工程技术-材料科学:综合
CiteScore
5.70
自引率
3.70%
发文量
18
审稿时长
6 months
期刊介绍: Machining Science and Technology publishes original scientific and technical papers and review articles on topics related to traditional and nontraditional machining processes performed on all materials—metals and advanced alloys, polymers, ceramics, composites, and biomaterials. Topics covered include: -machining performance of all materials, including lightweight materials- coated and special cutting tools: design and machining performance evaluation- predictive models for machining performance and optimization, including machining dynamics- measurement and analysis of machined surfaces- sustainable machining: dry, near-dry, or Minimum Quantity Lubrication (MQL) and cryogenic machining processes precision and micro/nano machining- design and implementation of in-process sensors for monitoring and control of machining performance- surface integrity in machining processes, including detection and characterization of machining damage- new and advanced abrasive machining processes: design and performance analysis- cutting fluids and special coolants/lubricants- nontraditional and hybrid machining processes, including EDM, ECM, laser and plasma-assisted machining, waterjet and abrasive waterjet machining
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