Investigation of Surface Properties in Manganese Powder Mixed Electrical Discharge Machining of OHNS And D2 Die Steels

Kumar, S. Suresh; Singh, Ramadhar

doi:10.15282/ijame.2.2010.7.0015

Cited by 11 publications

(8 citation statements)

References 17 publications

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“…The die sinking electrical discharge machining is the most widely used techniques for replication of products such as die-casting, injection moulding, etc [73][74][75]. It is also better known as the cavity type EDM or volume EDM.…”

Section: Die Sinking Edmmentioning

confidence: 99%

A review on machining of metal matrix composites using nanoparticle mixed dielectric in electro-discharge machining

Mohanty¹,

Routara²

2016

Int. J. Automot. Mech. Eng.

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The growth in the new advanced materials that are harder till date have led to the improvement of technologies used to machine them. Nowadays, new materials have been developed to be used in different sectors where lighter and harder materials are in vast requirement. Moreover, materials machined with high precision machine tools have to provide the greatest surface finish such that it catches the pace with other competitive materials. Research has shown that the electro-discharge machining (EDM) is the only machine tool that has created history in machining hard materials. In the recent years, metal matrix composites (MMCs) have an increasing demand in the industries since they are hard materials to machine and a good finish is required in the aerospace, marine, aircraft, nuclear and other similar industries. Thus, EDM has gained fame in machining MMCs. With due course, the powder mixed electro-discharge machining (PMEDM) has created efficient EDM, with the use of powders in the dielectric. The dielectric mixed EDM has been used for efficient material removal rate (MRR). With the change in technologies, the sizes of powders that have to be added in the dielectric fluid go on decreasing. In this review, studies by numerous researchers on the MMCs that are machined with the use of PMEDM are mentioned. The powders used in the experimentation are of nano size. Furthermore, the optimization technique used by the researchers is discussed in the present study.

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Section: Die Sinking Edmmentioning

confidence: 99%

A review on machining of metal matrix composites using nanoparticle mixed dielectric in electro-discharge machining

Mohanty¹,

Routara²

2016

Int. J. Automot. Mech. Eng.

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“…In addition to these difficulties, the higher cost of these special tools limits the conventional machining of titanium alloys. Although the above-mentioned tool materials seem to be effective in machining, they cannot be recommended for the machining of titanium and its alloys (Hascalik, Caydas, & Gurun, 2007;Kumar & Singh, 2010;Singh & Singh, 2011). It is recognized that electrical discharge machining can be used effectively in machining hard, high-strength, and temperature-resistant materials (Khan, Rahman, Kadirgama, Maleque, & Ishak, 2011c;Najiha, Rahman, Kamal, Yusoff, & Kadirgama, 2012;Yusoff, Mohamed Suffian, & Taib, 2011).…”

Section: Introductionmentioning

confidence: 99%

Electrode Wear Rate of Graphite Electrodes during Electrical Discharge Machining Processes on Titanium Alloy Ti-5Al-2.5Sn

Khan¹,

Rahman²,

Kadirgama³

2014

Int J Automot Mech Eng

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The proper selection of machining parameters can result in better machining performance in the electrical discharge machining process. However, this job is not always easy since the phenomena occurring between the electrodes in EDM are not yet fully understood. This study reports the development of a comprehensive mathematical model for the electrode wear rate (EWR) of a graphite tool in EDM on Ti-5Al-2.5Sn alloy, which has not yet been presented. Experiments for positive polarity of the graphite electrode, based on design of experiment (DOE), are first conducted. Modeling and analysis are carried out through the response surface methodology, utilizing the experimental results. A confirmation test is also executed to confirm the validity and the accuracy of the mathematical model developed. The confirmation test exhibits an average error of less than 6%. Negative electrode wear is evidenced for particular settings. The combination of 15A peak current, 350µs pulse-on time, 180µs pulse-off time and 95V servo-voltage and positive polarity causes negative tool wear. It is apparent that the developed model can evaluate electrode wear rate accurately and successfully.

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“…The surface integrity is thus given great attention during machining. It is reported that thermal and mechanical cycling, microstructural transformations, and mechanical and thermal deformations during machining processes are caused by these impacts (Axinte & Dewes, 2002;Kumar & Singh, 2010;Singh & Singh, 2011). In any case where the fatigue life of a machined part is deemed central, the smoothest possible surface is important (Novovic, Dewes, Aspinwall, Voice, & Bowen, 2004).…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Surface Integrity in End Milling of Hastelloy C-2000 Superalloy

Razak¹,

Rahman²,

Kadirgama³

2014

Int J Automot Mech Eng

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This paper presents an experimental study of surface integrity in end milling of Hastelloy C-2000. The experiment was carried out using two different cutting inserts under wet conditions -namely physical vapor deposition coated carbide with TiAlN and uncoated carbide. Design of experiment was implemented with a Box-Behnken design. The surface integrity of the workpiece was analyzed through scanning electron microscopy (SEM) and chemical element changes were inspected by an energy dispersive X-ray (EDX) test. The surface integrity of Hastelloy C-2000 was better when machining with coated carbide compared to uncoated carbide cutting inserts, mainly because the coating layer of coated carbide acted as a protecting layer to the cutting tool insert. Surface defects such as feed marks, surface tearing, plucking, cracking and adhered chips were found during the machining process. The chemical element changes happened due to the adhesion and diffusion mechanisms which were identified using SEM and EDX.

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Investigation of Surface Properties in Manganese Powder Mixed Electrical Discharge Machining of OHNS And D2 Die Steels

Cited by 11 publications

References 17 publications

A review on machining of metal matrix composites using nanoparticle mixed dielectric in electro-discharge machining

A review on machining of metal matrix composites using nanoparticle mixed dielectric in electro-discharge machining

Electrode Wear Rate of Graphite Electrodes during Electrical Discharge Machining Processes on Titanium Alloy Ti-5Al-2.5Sn

Experimental Study on Surface Integrity in End Milling of Hastelloy C-2000 Superalloy

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