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首页> 外文会议>International Research Advancement Network >Material removal rate and machining accuracy of electrical discharge machining(EDM)of Inconel 718 using copper electrode
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Material removal rate and machining accuracy of electrical discharge machining(EDM)of Inconel 718 using copper electrode

机译：使用铜电极的Inconel 718的电气放电加工（EDM）的材料去除速率和加工精度

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Electrical Discharge Machining(EDM)is a non-contact thermal machining process capable of machining conductive and semi-conductive materials.These capabilities bring to admission of machining materials that characteristically difficult to machine such as Inconel 718 due to its ability to maintain hardness at elevated temperature.Nickel based super alloy,Inconel 718 is one of the difficult to machine material that widely used in such high temperature application.The purpose of the study is to examine the Inconel 718 machinability by applied variable parameters such as peak current,pulse duration and repetitive used of electrode.To obtain the high performance measure in EDM,the selected peak currents were high where it is from 20 to 40A while for pulse duration is from 200 to 400μs.The performance measure that being evaluated are material removal rate(MRR).surface topography and machining accuracy.This research used Copperas electrode due to its high electrical conductivity and achieved highly in MRR.With the series of repetition used of electrode,the carbon layer known as black layer will formed at the surface contact of electrode.The relationship between the parameters and performance measure were more profound through the combination of machining parameters and black layer on the electrode.At high material removal rate,the surface topography of Inconel 718 look rougher with bigger sizes of nodules and craters produced.In the case of machining accuracy,it was found that,overall diameter overcut are less than 3.47%.The result shows that,even applying high peak current and pulse duration,the results of the machining accuracy is still acceptable.
机译：放电加工（EDM）是能够加工的导电和半导电materials.These能力带来加工材料特征性难加工如铬镍铁合金718，由于其在高温保持硬度能力的入场的非接触热加工过程temperature.Nickel基超合金，因科镍合金718是难加工的材料，广泛使用在这样的高温下的研究application.The目的是检查由施加的可变参数，例如峰值电流，脉冲持续时间和铬镍铁合金718的机械加工性的一个重复使用的electrode.To获得EDM高性能测量，所选的峰值电流分别为高，其中它为20至40A，而被评估为脉冲持续时间为200至400μs.The性能测量是材料去除速率（MRR） 。表面形貌和加工accuracy.This研究中使用矾电极由于其高导电性和实现ħ ighly在MRR.With电极的所用的系列重复的，被称为黑层的碳层将形成在的参数和性能度量之间的关系electrode.The的表面接触都更深刻的通过机械加工参数和黑色层的组合所述electrode.At高的材料去除速率，因科镍合金718的外观粗糙的有结节和凹坑produced.In加工精度的情况下的较大尺寸的表面形貌，已发现的是，整体直径过切小于3.47％。该结果显示的是，即使施加高的峰值电流和脉冲持续时间，加工精度的结果仍是可以接受的。

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