NDLI: Influence of the electrical conductivity of dielectric fluid on wedm machinability.

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Influence of the electrical conductivity of dielectric fluid on wedm machinability.

Content Provider	CiteSeerX
Author	Kim, Chang-Ho
Abstract	ABSTRACT: In wire-electrical discharge machining (WEDM), The dielectric plays an important role as the working fluid. During machining, the melted material by heat is dispersed into dielectric. The presence of minute metal particles (gap debris) contaminates dielectric fluid. It affects the material removal rate and properties of the machined surface because it exists in the spark gap between work and electrode. This work deals with the effect of the electrical conductivity of a dielectric fluid on the metal removal rate and surface quality by WEDM. The specimens are three types of sintered carbides and a low-carbon steel. Experimental results show that increasing the fraction of cobalt in carbides improves the metal removal rate, but the surface quality is degraded as a greater quantity of solidified metal deposits on the eroded surface. Lower electrical conductivity of the dielectric results in a higher metal removal rate as spark gap reduced. The debris, the surface characteristics of material and wire electrode were also analyzed through scanning electron microscopy (SEM) and surface roughness tester. Key words: electrical conductivity of dielectric, cobalt fraction of sintered carbide, wire electrical discharge machining, offset 1
File Format	PDF
Access Restriction	Open
Subject Keyword	Electrical Conductivity Dielectric Fluid Metal Removal Rate Wedm Machinability Spark Gap Sintered Carbide Surface Quality Important Role Machined Surface Minute Metal Particle Wire-electrical Discharge Machining Electron Microscopy Material Removal Rate Eroded Surface Gap Debris Wire Electrical Discharge Machining Wire Electrode Surface Characteristic Solidified Metal Deposit Cobalt Fraction Surface Roughness Tester Dielectric Result Low-carbon Steel Experimental Result
Content Type	Text
Resource Type	Article

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