Experimental study on micro EDM-drilling of Ti6Al4V using helical electrode

Plaza, Soraya; Sánchez, J.A.; Perez, Endika; Heradio, Rubén; Izquierdo, B.; Ortega, Naiara; Pombo, I.

doi:10.1016/j.precisioneng.2014.04.010

Cited by 138 publications

(54 citation statements)

References 17 publications

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“…However, titanium alloys are also regarded as "difficult-tomachine" materials because of their outstanding properties such as a high strength-to-weight ratio, good resistance to creep and fatigue and excellent corrosion resistance. They are increasingly being used in the following areas: aerospace applications, automotive applications, biomedical applications and other industries [4]. Graphite is widely used as electrode material in edm, this is due to its low density and good electrical along with its machinability [4], [5].…”

Section: Introductionmentioning

confidence: 99%

“…They are increasingly being used in the following areas: aerospace applications, automotive applications, biomedical applications and other industries [4]. Graphite is widely used as electrode material in edm, this is due to its low density and good electrical along with its machinability [4], [5]. As a thermal erosion process, electrical discharge machining (edm) is capable of machining all electrically conductive materials irrespective of their hardness.…”

Section: Introductionmentioning

confidence: 99%

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Comparison Performances of EDM on Ti6Al4V with Two Graphite Grades

Muttamara¹

2015

IJCEA

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Abstract-Technologies for EDM machining are demanded in many industrial fields. Graphite is widely used as electrode material in EDM. Graphite (Poco EDM-3) and copperinfiltrated-graphite (Poco EDM-C3) electrodes were used to compare the corresponding to EDM properties. The experiments were carried out on Ti6Al4V. Performance in respect to MRR and electrode wear is compared for two graphite qualities. The results show that EDM3 graphite performs very well giving significantly higher MRR than EDM-C3, and also with acceptable relative electrode wear. The surface roughness of workpiece produced by EDM-C3 is better than EDM-3 due to gap distance of EDM-C3 is larger than that produced by EDM-3. The two electrode materials give the same micro-hardness of the layers that are about 800 HV.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison Performances of EDM on Ti6Al4V with Two Graphite Grades

Muttamara¹

2015

IJCEA

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“…Expect above mechanical drilling of Ti, researchers brought out some advanced drilling process recently to meet the requirement in productivity and precision of part. Spakal and Plaza carried out work on micro-EDM drilling of Ti6Al4V in the field of optimization of process parameters and creative design of drill respectively [13,14]. Sakurai and Okamura made pioneering work of low frequency vibration drilling of titanium alloy [15,16].…”

Section: Introductionmentioning

confidence: 99%

Through-Hole Exit Characteristics in Drilling Of TI6AL4V and Quality Improvement of Hole Exit

Han¹,

Wan²

2019

IJMECH

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The removal of macro-burrs formed after drilling has always been a difficult engineering problem, especially on different-machined materials with through holes. This paper aims at presenting an investigation into hole exit characteristics of Ti6Al4V drilled. Plastic deformation at the end of the cutting process or blanking results into the forming of burr, whose degree of impact is mostly affected by the processing parameters, especially the axial feed. Series experiments were conducted to analysis the effect of processing parameter on formed burr. The volume of burr has great effect on work-piece quality and product cost, the burr height formed easily decreases because great attention from scholars and engineers has been paid to, while the burr width size despised naturally plays a great influence on product quality and machining cost. The new de-burring tool are designed and applied in experiment, the decrease in burr width is obviously found, so the removal of burrs becomes much little than that gotten in traditional tool. The resulting indicates a promising future of de-burring in practical application Journals.

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“…The influence of EDM parameters on material removal rate, electrode wear, machining time and micro-hole quality when machining Ti6Al4V is studied and conclusion says that due to an inefficient removal of debris when increasing hole depth, a new strategy based on the use of helical-shaped electrodes has been proposed [8]. Dhar and Purohit [9] evaluated the effect of current (c), pulse-on time (p) and air gap voltage (v) on MRR, TWR, ROC of EDM with Al-4Cu-6Si alloy-10 wt. % SiC P composites.…”

Section: Introductionmentioning

confidence: 99%

Parametric Analysis during Electric Discharge Machining of Aluminium MMC using Taguchi’s Methodology

Kumar¹

2018

IJRASET

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The advancement in the material processing has leads to the development of composite materials which possess the better mechanical properties than conventional materials. In the present paper, machining of developed aluminum metal matrix composite was performed using electric discharge machining process. the experimentation was planned as per Taguchi's methodology using L 9 orthogonal array. Voltage, current, and pulse on time were used as input process parameters whereas surface roughness was used as response parameters for the process. The results predicted that the parametric combination In order to analyze their machining behavior, a number of machining processes are being widely used [4,5]. A lot new machining techniques are being developed in the field of micromachining. In the field of micromachining, electric discharge machining (EDM) process is a quite familiar name. A part of it, EDM drilling is excellent for machining deep and narrow holes regardless of material hardness and location, whereas die-sinking EDM works well to machine micro-parts and perpendicular walls of die and molds [6].Current paper investigates the carbonaceous layer and its formation during the erosion. During Electric Discharge Machining process several material loadings take place on the workpiece surface within the processing zone. To model the comprehensive material removal and its effects on the resulting material properties especially in the rim zone and on surface integrity it is necessary to describe these loadings on several length scales in detail [7]. The influence of EDM parameters on material removal rate, electrode wear, machining time and micro-hole quality when machining Ti6Al4V is studied and conclusion says that due to an inefficient removal of debris when increasing hole depth, a new strategy based on the use of helical-shaped electrodes has been proposed [8]. Dhar and Purohit [9] evaluated the effect of current (c), pulse-on time (p) and air gap voltage (v) on MRR, TWR, ROC of EDM with Al-4Cu-6Si alloy-10 wt. % SiC P composites. The MRR was found to decrease with an increase in the percent volume of SiC, whereas the TWR and the surface roughness increase with an increase in the volume of Sic. it shown the graph between interactive effect of the percent volume of Sic and the current on MRR [10]. Taweel [11] fabricated Tool electrode material such as Al-Cu-Si-Tic composite produced using powder metallurgy (P/M) technique and using workpiece material CK45 steel. B.Mohan et.al [12] explains the evolution of effect of the EDM Current, electrode marital polarity, pulse duration and rotation of electrode on metal removal rate. TWR and SR. EDM of Al-Sic with 20-25 vol. %, the MRR increased with increased in discharge current and specific current it decreased with increase in pulse duration. The EDM process's workpiece generated by the superposition of multiple discharges, as it happens during an actual EDM operation, by diameter of the discharge channel and material removal efficiency can be estimated using i...

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Experimental study on micro EDM-drilling of Ti6Al4V using helical electrode

Cited by 138 publications

References 17 publications

Comparison Performances of EDM on Ti6Al4V with Two Graphite Grades

Comparison Performances of EDM on Ti6Al4V with Two Graphite Grades

Through-Hole Exit Characteristics in Drilling Of TI6AL4V and Quality Improvement of Hole Exit

Parametric Analysis during Electric Discharge Machining of Aluminium MMC using Taguchi’s Methodology

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