Optimization of PMEDM Parameters for Minimizing Electrode Wear Rate When Processing SKD11 Steel

2022 ◽  
pp. 731-738
Author(s):  
Anh Tuan Nguyen ◽  
Thi Tam Do ◽  
Thu Quy Le ◽  
Quoc Cuong Dang ◽  
Kieu Tuan Trinh ◽  
...  
Keyword(s):  
Wear Rate ◽  
Electrode Wear ◽  
Electrode Wear Rate

PENGARUH VARIABEL PEMOTONGAN TERHADAP KEAUSAN ELEKTRODA DAN BENDA KERJA PADA PROSES EDM

ROTASI ◽  
2014 ◽  
Vol 16 (4) ◽  
pp. 9
Author(s):  
Petrus Londa
Keyword(s):  
Wear Rate ◽  
Analysis Of Variance ◽  
Material Removal Rate ◽  
Orthogonal Array ◽  
Material Removal ◽  
Removal Rate ◽  
Signal To Noise Ratio ◽  
Electrode Wear ◽  
Signal To Noise ◽  
Electrode Wear Rate

Keausan elektroda pada proses EDM die sinking adalah peristiwa yang tidak dapat di hindari, namun dengan mengatur variabel pemotongan yang sesuai, diharapkan keausan yang terjadi se-minim mungkin sehingga dapat menjamin tingkat akurasi ukuran pada benda kerja yang di hasilkan. Pada penelitian ini di pilih metode Taguchi untuk menentukan variabel pemotongan yang optimum pada elektroda tembaga dan benda kerja dari bahan K460 (amutit S). Taguchi L9 orthogonal array, signal-to-noise ratio (S/N ratio) dan analysis of variance (ANOVA) dapat menentukan performa variabel proses EDM (PON, POFF, QDON dan GAP) dengan parameter yang di teliti adalah Electrode Wear Rate (EWR) dan Material Removal Rate (MRR). Hasil dari eksperimen tersebut di tampilkan dalam bentuk tabel-tabel dan grafik

Effect of Higher Peak Current and Pulse Duration on EWR of Copper Electrode when Electrical Discharge Machining (EDM) of Inconel 718

2013 ◽  
Vol 845 ◽  
pp. 945-949
Author(s):  
S. Ahmad ◽  
Mohd Amri Lajis
Keyword(s):  
Wear Rate ◽  
Pulse Duration ◽  
Electrode Surface ◽  
Inconel 718 ◽  
Copper Electrode ◽  
Work Piece ◽  
Electrode Wear ◽  
Peak Current ◽  
Electrode Wear Rate ◽  
Pulse On Time

In this work, the electrode wear rate (EWR) and electrode surface characteristic of copper electrode when EDM of Nickel Based Super Alloy, Inconel 718 at higher peak current and pulse duration were analyzed. Experiments were conducted using Inconel 718 as a work piece and copper as an electrode with a kerosene dielectric under different peak currents and pulse durations. Peak current, Ip within a range of 20A to 40A and pulse duration (or pulse on-time), ton within a range of 200μs to 400μs are selected as the main parameters. In this study, EWR were measured using digital weight balance (accuracy 0.01mg) and by using Scanning Electron Microscope (SEM), the surface texture of the electrode in order to evaluate the material deposited on the electrode surface. The results have shown that machining at a lowest peak current of 20A and highest pulse duration of 400μs yields the lowest electrode wear rate (EWR) of -0.01mm3/min. The pulse duration is significantly affecting the EWR. It also revealed that, the deposited of carbon and work piece material is occurred on the electrode surface for all machining conditions.

Electric discharge machining using rapid manufactured complex shape copper electrode: Parametric analysis and process optimization for material removal rate, electrode wear rate and cavity dimensions

2020 ◽  
Vol 234 (12) ◽  
pp. 2459-2473 ◽  
Author(s):  
Jagtar Singh ◽  
Gurminder Singh ◽  
Pulak M Pandey
Keyword(s):  
Wear Rate ◽  
Material Removal Rate ◽  
Electric Discharge ◽  
Computer Aided Design ◽  
Material Removal ◽  
Removal Rate ◽  
Copper Electrode ◽  
Electrode Wear ◽  
Electric Discharge Machining ◽  
Electrode Wear Rate

The present investigation addresses the machining outcome of electric discharge machining using a rapid manufactured complex shape copper electrode. Developed rapid manufacturing technique using an amalgamation of polymer 3D printing and pressureless sintering of loose powder as rapid tooling has been used to fabricate copper electrode from the computer-aided design model of the desired shape. The fabricated electrode was used for the electric discharge machining of the D-2 steel workpiece. Central composite design was employed to study the electric discharge machining parameters (pulse duration, duty cycle and peak current) effect on the electric discharge machining characteristics such as material removal rate, electrode wear rate and cavity dimensional deviation as overcut from electrode computer-aided design model. Analysis of variance was executed to attain significant parameters along with interactions. Peak current was found to be the utmost dominating parameter for three responses. The high percentage of carbon was observed on the electrode surface after electric discharge machining at the high level of pulse duration and resulted in low electrode wear rate. The high percentage of dimensional deviation was noticed at the maximum duty cycle and maximum peak current by the substantial interactions. Genetic algorithm-based multi-objective optimization was employed for the electric discharge machining parameters optimization to maximize material removal rate, minimize electrode wear rate and dimensional deviation. The multi-feature complex copper electrode was fabricated and used for electric discharge machining as the case study to check the efficacy of the optimized process. It was witnessed that the process was competent to fabricate complex shape cavity as per the desired computer-aided design model shape with efficient material removal rate and electrode wear rate.

Effect of Powder Concentration on EDM Performance during Machining Mild Steel

2015 ◽  
Vol 1115 ◽  
pp. 7-11
Author(s):  
Ahsan Ali Khan ◽  
Nurfarah Wahid Azmi ◽  
Mohd Azim Odenan ◽  
Zakatia Mohd Zain
Keyword(s):  
Surface Roughness ◽  
Wear Rate ◽  
Mild Steel ◽  
Tantalum Carbide ◽  
Dielectric Fluid ◽  
Electrode Wear ◽  
Machining Parameters ◽  
Work Surface ◽  
Powder Concentration ◽  
Electrode Wear Rate

This research work describes the effect of powder concentration in dielectric fluid during electrical discharge machining (EDM) of mild steel on material removal rate (MRR), electrode wear rate (EWR) and work surface roughness (Ra). The machining parameters studied in this research are current (4.5A, 5.5A, and 6.5A) and concentration of the powder (30g/l, 60g/l, and 90g/l). It was decided to use copper (Cu) as the electrode, mild steel as the work material and tantalum carbide (TaC) as the powder to be mixed with the dielectric. Design-Expert software was used to design and analyze the experiments. The performance of machining was analyzed and it was found that powder concentration does not have much effect on MRR or work surface roughness (Ra). At low current powder concentration reduces electrode wear rate (EWR), but at higher current the situation is opposite. It was also found that in all conditions, MRR and EWR increases with increase in current. A higher current produces stronger spark with higher energy that melts more materials from the workpiece and the electrode. As a result both MRR and EWR increases and job surface becomes poor.

scholarly journals Effect of Different Dielectrics on Material Removal Rate, Electrode Wear Rate and Microstructures in EDM

Procedia CIRP ◽  
2017 ◽  
Vol 60 ◽  
pp. 2-7 ◽  
Author(s):  
Misbah Niamat ◽  
Shoaib Sarfraz ◽  
Haris Aziz ◽  
Mirza Jahanzaib ◽  
Essam Shehab ◽  
...  
Keyword(s):  
Wear Rate ◽  
Material Removal Rate ◽  
Material Removal ◽  
Removal Rate ◽  
Electrode Wear ◽  
Electrode Wear Rate

Performance of EC-PCD Made of Boron Doped Diamond as an Electrode for EDM of Cemented Carbide

2014 ◽  
Vol 1017 ◽  
pp. 776-781
Author(s):  
William Chen ◽  
Manabu Iwai ◽  
Shinichi Ninomiya ◽  
Kiyoshi Suzuki
Keyword(s):  
Wear Rate ◽  
Cemented Carbide ◽  
Electrode Wear ◽  
Excellent Performance ◽  
Boron Doped Diamond ◽  
Electrically Conductive ◽  
Boron Doped ◽  
Electrode Wear Rate ◽  
Diamond Particles ◽  
Electrode Length

Electrically conductive PCD (EC-PCD), which was made of electrically conductive diamond particles, was applied to an electrode for EDM. In this study, properties of EC-PCD electrode in the EDM of cemented carbide were investigated and the results were compared with those of copper-tungsten (Cu-W) electrode and standard PCD (S-PCD) electrode. In terms of EDM speed, 35μm/min with Cu-W electrode, 15μm/min with S-PCD electrode and 22μm/min with EC-PCD were recorded. As for the electrode wear rate, though Cu-W electrode wore by 20-30%, S-PCD and EC-PCD did not wear at all and even the electrode length became longer by several micro meters. Roughness value of the EDMed surface was Rz=8μm with both Cu-W and S-PCD, while it was Rz=3μm in the case of EC-PCD. From the above, it was found that EC-PCD showed excellent performance in the electrode wear rate and the roughness of the EDMed surface, though EDM speed was 0.7 times of Cu-W electrode.

Study on Electrical Discharge Machining Characteristics of Electrically Conductive Ceramics

2009 ◽  
Vol 407-408 ◽  
pp. 636-639 ◽  
Author(s):  
Hai Wang ◽  
Akira Okada ◽  
Takafumi Uwano ◽  
Yoshiyuki Uno ◽  
Habib Sameh
Keyword(s):  
Wear Rate ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
High Hardness ◽  
Titanium Boride ◽  
Copper Electrode ◽  
Electrode Wear ◽  
Electrically Conductive ◽  
Electrode Wear Rate ◽  
Conductive Ceramics

This paper deals with EDM characteristics of newly develops electrically conductive ceramics. Titanium boride (TiB2) is widely used as die and mold materials because of its high hardness, high-temperature resistance and so on. The EDM characteristics of the titanium boride, such as electrode wear rate, removal rate and surface roughness were investigated. Experimental results show that EDM with low electrode wear rate is possible when copper electrode is used with positive polarity. The removal rate becomes much higher when graphite electrode is used with negative polarity.

Investigation the Electrode Wear Rate and Metal Removal Rate in EDM Process using Taguchi and ANOVA Method

2020 ◽  
Vol 38 (10A) ◽  
pp. 1504-1510
Author(s):  
Safaa K. Ghazi
Keyword(s):  
Wear Rate ◽  
Metal Removal ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Electrode Wear ◽  
Metal Removal Rate ◽  
Electrode Wear Rate ◽  
Pulse On Time ◽  
Pulse Off Time ◽  
Off Time

The experimental work of this paper leads to electrical discharge machining (EDM). A system for machining in this process has been developed. Many parameters are studied such as current, pulse on-time, pulse off time of the machine. The main aim of this work is to calculate the metal removal rate (MRR) and electrode wear rate (EWR) using copper, electrodes when machining tool steel H13 specimens of a thickness (4mm). Different current rates are used ranging from (30, 42, and 54) Amp, pulse on-time ranging from (75, 100, and 125) and pulse off time ranging from (25, 50, and 75)   found that high current gives large electrode wear and metal removal rate and. The experiment design was by Taguchi Method. From an analysis of variance (ANOVA) the more active influence of input factors on the outputs is currently for metal removal rate (MRR) (58%) and electrode wear rate (EWR) (57).

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