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Performance evaluation of different types of graphite electrodes on titanium (Ti - 6A1 - 4V)

This thesis presents the EDMing of Titanium (Ti-6A1-4V) using POCO EDM 3 and POCO EDM C3 graphites electrodes with diameter of 10 mm. The main purpose of this study was to investigate the influenced of various parameters involved in EDM on the machining characteristics, namely, material removal r...

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Main Author: Abdul Haq, Reazul Haq
Format: Thesis
Language:English
Published: 2009
Subjects:
TJ Mechanical engineering and machinery
TJ1125-1345 Machine shops and machine shop practice
Online Access:http://eprints.uthm.edu.my/3994/1/24p%20REAZUL%20HAQ%20ABDUL%20HAQ.pdf
http://eprints.uthm.edu.my/3994/
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spelling my.uthm.eprints.39942022-02-03T02:13:46Z http://eprints.uthm.edu.my/3994/ Performance evaluation of different types of graphite electrodes on titanium (Ti - 6A1 - 4V) Abdul Haq, Reazul Haq TJ Mechanical engineering and machinery TJ1125-1345 Machine shops and machine shop practice This thesis presents the EDMing of Titanium (Ti-6A1-4V) using POCO EDM 3 and POCO EDM C3 graphites electrodes with diameter of 10 mm. The main purpose of this study was to investigate the influenced of various parameters involved in EDM on the machining characteristics, namely, material removal rate (MRR), electrode wear ratio (EWR), surface roughness (Ra), recast layer (RL) and heat affected zone (HAZ) after undergone EDMing process and to compare the performance of both electrodes. The Full Factorial Design of Experiment (DOE) approach with two-level was used to formulate the experimental layout, to analyze the effect of each parameter such as pulse on (ON), pulse off (OFF), peak current (IP) and servo voltage (SV) on the machining characteristics EDM . In this investigation, the machining operation for titanium was performed using a Sodick linear motor EDM sinker series AQ55L. Meanwhile, for the measurement equipments; Mitutoyo Surftest SJ-400 was used to measure the surface roughness, and the thickness of recast layer and heat affected zone were examined using the Scanning Electron Microscope XL40. In general, results revealed that pulse on (ON) and peak current (IP) have appeared to be the most significant effect to all responses investigated. In term of performance, POCO C3 gives better material removal rate (MRR) value compare to POCO 3 but in term of electrode wear ratio (EWR) and also surface roughness (SR) POCO 3 gives better result compare to POCO C3. On the Recast layer and HAZ both the good and the worst came from POCO 3. The lowest recast layer achieved was 13.5 fxm and the lowest HAZ achieved was 12.7 Hm. Confirmation tests were also conducted for the optimum conditions for each machining characteristics in order to verify and compare the results from the theoretical prediction using Design Expert software and experimental confirmation tests. Overall, the results from the confirmation tests showed that the percentage of performance was acceptable due to all the results obtained were within the allowable values which was less than 15% of margin error. 2009-11 Thesis NonPeerReviewed text en http://eprints.uthm.edu.my/3994/1/24p%20REAZUL%20HAQ%20ABDUL%20HAQ.pdf Abdul Haq, Reazul Haq (2009) Performance evaluation of different types of graphite electrodes on titanium (Ti - 6A1 - 4V). Masters thesis, Universiti Teknologi Malaysia..
institution Universiti Tun Hussein Onn Malaysia
building UTHM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tun Hussein Onn Malaysia
content_source UTHM Institutional Repository
url_provider http://eprints.uthm.edu.my/
language English
topic TJ Mechanical engineering and machinery
TJ1125-1345 Machine shops and machine shop practice
spellingShingle TJ Mechanical engineering and machinery
TJ1125-1345 Machine shops and machine shop practice
Abdul Haq, Reazul Haq
Performance evaluation of different types of graphite electrodes on titanium (Ti - 6A1 - 4V)
description This thesis presents the EDMing of Titanium (Ti-6A1-4V) using POCO EDM 3 and POCO EDM C3 graphites electrodes with diameter of 10 mm. The main purpose of this study was to investigate the influenced of various parameters involved in EDM on the machining characteristics, namely, material removal rate (MRR), electrode wear ratio (EWR), surface roughness (Ra), recast layer (RL) and heat affected zone (HAZ) after undergone EDMing process and to compare the performance of both electrodes. The Full Factorial Design of Experiment (DOE) approach with two-level was used to formulate the experimental layout, to analyze the effect of each parameter such as pulse on (ON), pulse off (OFF), peak current (IP) and servo voltage (SV) on the machining characteristics EDM . In this investigation, the machining operation for titanium was performed using a Sodick linear motor EDM sinker series AQ55L. Meanwhile, for the measurement equipments; Mitutoyo Surftest SJ-400 was used to measure the surface roughness, and the thickness of recast layer and heat affected zone were examined using the Scanning Electron Microscope XL40. In general, results revealed that pulse on (ON) and peak current (IP) have appeared to be the most significant effect to all responses investigated. In term of performance, POCO C3 gives better material removal rate (MRR) value compare to POCO 3 but in term of electrode wear ratio (EWR) and also surface roughness (SR) POCO 3 gives better result compare to POCO C3. On the Recast layer and HAZ both the good and the worst came from POCO 3. The lowest recast layer achieved was 13.5 fxm and the lowest HAZ achieved was 12.7 Hm. Confirmation tests were also conducted for the optimum conditions for each machining characteristics in order to verify and compare the results from the theoretical prediction using Design Expert software and experimental confirmation tests. Overall, the results from the confirmation tests showed that the percentage of performance was acceptable due to all the results obtained were within the allowable values which was less than 15% of margin error.
format Thesis
author Abdul Haq, Reazul Haq
author_facet Abdul Haq, Reazul Haq
author_sort Abdul Haq, Reazul Haq
title Performance evaluation of different types of graphite electrodes on titanium (Ti - 6A1 - 4V)
title_short Performance evaluation of different types of graphite electrodes on titanium (Ti - 6A1 - 4V)
title_full Performance evaluation of different types of graphite electrodes on titanium (Ti - 6A1 - 4V)
title_fullStr Performance evaluation of different types of graphite electrodes on titanium (Ti - 6A1 - 4V)
title_full_unstemmed Performance evaluation of different types of graphite electrodes on titanium (Ti - 6A1 - 4V)
title_sort performance evaluation of different types of graphite electrodes on titanium (ti - 6a1 - 4v)
publishDate 2009
url http://eprints.uthm.edu.my/3994/1/24p%20REAZUL%20HAQ%20ABDUL%20HAQ.pdf
http://eprints.uthm.edu.my/3994/
_version_ 1738581193383739392
score 13.211869

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