An Investigation on surface integrity in EDM Process with a Copper Tungsten Electrode

Rizvi, Syed Asghar Husain; Agarwal, Sanjay

doi:10.1016/j.procir.2016.02.254

Cited by 29 publications

(8 citation statements)

References 12 publications

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“…20, 24 Thus, an increase in thermal gradient was witnessed on the machined surface leading to an increase in thermal stress, thereby increasing the SCD. 20, 25 Similar outcomes for SCD were observed by Kumar et al 20 , Merdan and Arnell 25 , Rizvi and Agrawal 26 , Lee and Tai 27 , Talla et al 28 and Datta et al 29 . Figure 5 illustrates the effect of pulse off duration on SCD.…”

Section: Resultssupporting

confidence: 71%

Study of surface crack density and microhardness of Aluminium 6061 alloy machined by EDM with mixed powder and assisted magnetic field

Rouniyar

Shandilya

2021

Journal of Micromanufacturing

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Magnetic field assisted powder mixed electrical discharge machining (MFAPM-EDM) has emerged as hybrid electrical discharge machining (EDM) technique which improves machining performance by the addition of powder in dielectric and under the influence of magnetic field. In the present article, Aluminium 6061 alloy was machined through fabricated MFAPM-EDM set-up considering the one-parameter-at-a-time method. The individual effect of process parameters, namely pulse on duration (PON), pulse off duration (POFF), discharge current (IP), magnetic field strength (MF) and powder concentration (PC) on surface crack density (SCD) and micro hardness (MH) has been studied. Pulse on duration was observed as the most dominating process parameter accompanied by peak current, powder concentration and magnetic field for both SCD and MH. Lower SCD (0. 0063 µm/µm 2 ) and higher MH (188. 21 HV) on machined surface were observed at PON= 90 µsec, POFF=45 µsec, IP=13 A, PC =10 g/l and MF= 0. 3 T. Machining of AA6061 with MFAPM-EDM process revealed 85% and 76% improvement in SCD and MH, respectively. XRD analysis witness an increase in MH due to the presence of oxide as well as carbide layer on machined surface.

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Section: Resultssupporting

confidence: 71%

Study of surface crack density and microhardness of Aluminium 6061 alloy machined by EDM with mixed powder and assisted magnetic field

Rouniyar

Shandilya

2021

Journal of Micromanufacturing

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“…Research works were found regarding ED-Machining performance applied to different grades of WC-Co on aspects related to technological performance measures, workpiece morphology and surface integrity, when using one single grade of CuW electrode [23][24][25] . However, so far in EDM literature no research works investigating the influences of different grades of CuW electrodes on surface roughness and circularity when ED-machining the same cemented carbide was found.…”

Section: Introductionmentioning

confidence: 99%

On Geometrical Characteristics of WC-Co Round Cavities After ED-Machining with Different Grades of CuW Electrodes

et al. 2020

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Cemented carbides (WC-Co) are difficult to be processed by conventional machining processes. Electrical discharge machining (EDM) appears as an efficient technology to manufacture WC-Co products with high accuracy. In EDM literature no research works investigating the influences of different grades of CuW electrodes on geometrical characteristics when ED-machining the same cemented carbide was found. This work presents an investigation on ED-Machining of cemented carbide (WC-Co) with 10% Co using two grades of coper-tungsten (CuW) electrodes with 65% and 85% of tungsten. ED-Machining experiments were carried out under rough, semifinish and finish regimes with input variables discharge current i e , discharge duration t e and pulse interval time t o using analysis of variance (ANOVA) based on design of experiments with complete factorial 3 2. Output variables evaluated were WC-Co workpiece geometrical characteristics 3D surface roughness and round cavities circularity measures. Results showed that ED-Machining regime is the most significant parameter on both WC-Co workpiece circularity and surface roughness measures. Electrodes grades CuW65 and CuW85 presented similar results on workpiece circularity and 3D surface roughness.

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“…13. Whereas increase in T on slightly lower the MRR due to the presence of ceramic phase reinforcement material [22]. The effect to input parameters on response parameters is called the interaction effect.…”

Section: Analysis Of Materials Removal Rate (Mrr)mentioning

confidence: 99%

Multi-Objective Optimization of Wire Electrical Discharge Machining of AL 2124/SIC Composite

Reddy,

Rao,

Janardhana

2019

IJEAT

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The growing demand for the use of high strength to weight alloys in industries for manufacturing complex structures challenges the machinability of such advanced materials. In the present investigation, the machinability of SiC particle reinforced Al 2124 composite was studied on Wire electrical discharge machining (WEDM). The process parameters namely pulse on-time (Ton), pulse off time (Toff), peak current (IP), and servo voltage (SV) were optimized by utilizing the central composite design layout. The output responses such as kerf and material removal rate (MRR) were studied in detail. The single and multi-objective optimization was studied for a combination effect using Derringer’s desirability approach and Genetic Algorithm (GA). The experimental and predicted values for each response were validated at the optimized condition. The experimental results were found in line with the predicted values. Multi objective optimization of kerf and MRR by GA showing better result compared to RSM.

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An Investigation on surface integrity in EDM Process with a Copper Tungsten Electrode

Cited by 29 publications

References 12 publications

Study of surface crack density and microhardness of Aluminium 6061 alloy machined by EDM with mixed powder and assisted magnetic field

Study of surface crack density and microhardness of Aluminium 6061 alloy machined by EDM with mixed powder and assisted magnetic field

On Geometrical Characteristics of WC-Co Round Cavities After ED-Machining with Different Grades of CuW Electrodes

Multi-Objective Optimization of Wire Electrical Discharge Machining of AL 2124/SIC Composite

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