The effect of machining parameters on tool electrode edge wear and machining performance in Electric Discharge Machining (EDM)

Çoğun, Can; Akaslan, S.

doi:10.1007/bf03185155

Cited by 19 publications

(20 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Increasing dielectric pressure at high-pressure settings does not result in a significant increase in V E . The increase in dielectric pressure at low-pressure settings results in a significant increase in V, whereas the increase in pressure at high dielectric pressure settings insignificantly affects V [4,5,14]. In an investigation, pressure, velocity and force variations due to forced dielectric flow in the machining gap for injection hole flushing through the tool were formulated theoretically [13].…”

Section: )mentioning

confidence: 99%

“…Therefore, increasing discharge current results in an increase in the values of V E and V W . The value of V also increases with increasing discharge current [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…At longer pulse durations, the increase in pulse duration results in a slight reduction of V E . This is mainly due to the decrease in spatial current density of the discharge channel and the increase in heat transfer time from the molten crater to the body of the tool, which results in less material being removed from the crater in proportion to pulse duration [4,[6][7][8]. In recent investigations, it has been reported that at long pulse durations, the carbon from the decomposition of hydrocarbon-based dielectric liquid and molten metal from carbon steel attaches to the surface of the tool.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An experimental investigation of tool wear in electric discharge machining

Özgedik

Çoğun

2005

Int J Adv Manuf Technol

View full text Add to dashboard Cite

In this study, the variations of geometrical tool wear characteristics -namely, edge and front wear -and machining performance outputs -namely, workpiece removal rate, tool wear rate, relative wear and workpiece surface roughness -were investigated with varying machining parameters. Experiments were conducted using steel workpieces and round copper tools with a kerosene dielectric under different dielectric flushing conditions (injection, suction and static), discharge currents and pulse durations. The experiments have shown that machining parameters and dielectric flushing conditions had a large effect on geometric tool wear characteristics and machining performance outputs. Additionally, published research on tool wear is presented in detail in this study. Symbolsh a Front surface wear height (average) (mm) h a Front surface wear rate (mm/min) i e Discharge current (A) r o Outer edge radius (mm) r i Inner edge radius (mm) t e Discharge duration (µs) t i Pulse duration (µs) t m Machining duration (min) t o Pulse interval time (µs) u e Discharge voltage (V) P s Suction flushing pressure (bar) P i Injection flushing pressure (bar) R 2 Regression constant R a

show abstract

Section: )mentioning

confidence: 99%

“…Therefore, increasing discharge current results in an increase in the values of V E and V W . The value of V also increases with increasing discharge current [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An experimental investigation of tool wear in electric discharge machining

Özgedik

Çoğun

2005

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…Cogun and Akaslan [51] analyzed that higher tool wear occurs at inner radii as compared to the outer radii of the cylindrical hollow tool electrodes. Haron et al [36] investigated that the tool wear rate decreases and material removal rate increases with the larger diameter of the tool as compared to the smaller diameter of the tool electrode in EDM process.…”

Section: Esearch In Tool Designmentioning

confidence: 99%

Recent Research Trends in Tool Electrode of Electrical Discharge Machining: A Review

2016

Arimpie - 2016

View full text Add to dashboard Cite

-Electrical Discharge Machining (EDM) is a thermo-electrical based non-contact material removal process for machining of the electrically conductive difficult-to-machine materials. The machinability of the EDM process is not affected by mechanical and physical properties of the workpiece materials. Even though, its performances are highly affected by the tool materials and their designs. Most of the research papers refer to enhance the productivity of the EDM process without considering the effect of the parameters related to the tool electrodes. Generally, the tool wear is the well known phenomenon of the EDM process that affects the plasma formation as well as surface quality and productivity. The aim of the present study is to summarize a report on the published works related to the tool electrodes materials, designs and their effect on the performances of the EDM process. Instead of this, the present paper also focuses to future research scope in the same field and discussed in the brief.

show abstract

“…They educed that the main and effective machining performance outputs are attributed to the MRR, tool wear and machined surface quality [1]. One of the most important electrical parameters of EDM is polarity [4].For briefly enlightening of electrical erosion mentality, and the morphological, metallurgical and textural ultimate surface characteristics, it's always necessary to study the effect of polarity which is defined as reverse polarity (electrode positive) and straight polarity (electrode negative) [5,6].…”

Section: Introductionmentioning

confidence: 99%

Effect of changing polarity of graphite tool/ Hadfield steel workpiece couple on machining performances in die sinking EDM

Özerkan

2017

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract. In this study, machining performance ouput parameters such as machined surface roughness (SR), material removal rate (MRR), tool wear rate (TWR), were experimentally examined and analyzed with the diversifying and changing machining parameters in (EDM). The processing parameters (input par.) of this research are stated as tool material, peak current (I), pulse duration (ton) and pulse interval (toff). The experimental machinings were put into practice by using Hadfield steel workpiece (prismatic) and cylindrical graphite electrodes with kerosene dielectric at different machining current, polarity and pulse time settings. The experiments have shown that the type of tool material, polarity (direct polarity forms higher MRR, SR and TWR), current (high current lowers TWR and enhances MRR, TWR) and pulse on time (ton=48s is critical threshold value for MRR and TWR) were influential on machining performance in electrical discharge machining.

show abstract

The effect of machining parameters on tool electrode edge wear and machining performance in Electric Discharge Machining (EDM)

Cited by 19 publications

References 11 publications

An experimental investigation of tool wear in electric discharge machining

An experimental investigation of tool wear in electric discharge machining

Recent Research Trends in Tool Electrode of Electrical Discharge Machining: A Review

Effect of changing polarity of graphite tool/ Hadfield steel workpiece couple on machining performances in die sinking EDM

Contact Info

Product

Resources

About