A study of wear and surface finish during spark erosion machining of high speed tool steel

Ramaswami, R.; Raj, Shivani

doi:10.1016/0043-1648(73)90228-7

Cited by 7 publications

(4 citation statements)

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“…It has been identified that AgW electrodes are found to be satisfying as they show better surface finish. Ramaswami and Louis Raj [3] studied the high speed tool steel HSS with three different electrodes such as copper, brass, and aluminium, and it has been proved that copper shows best MRR, wear ratio, and surface finish compared to other electrodes. Pellical et al [4] has also analyzed the machining performance of AISI H13 die steel using different shaped copper electrodes.…”

Section: Introductionmentioning

confidence: 98%

Experimental Investigation on the Electrode Specific Performance in Micro-EDM of Die-Steel

Kadirvel

Hariharan

Gowri

2013

Materials and Manufacturing Processes

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Recent advancement in manufacturing industries has given rise to miniaturized and light weight products with increasing high engineering applications. The miniaturized products demand innovative manufacturing methods. Microelectric discharge machining (micro-EDM) is one of the most powerful technologies capable of fabricating microstructures/parts. Experiments have been conducted on the machining of EN24 die steel with different electrodes such as tungsten, copper, copper tungsten, and silver tungsten in micro-EDM setup. The process performance was estimated based on material removal rate (MRR), circularity, overcut, and heat-affected zones (HAZ) of micromachined holes. Further, the outcome of various machining parameters such as gap voltage, capacitance, threshold, and feed rate of the electrode has also been investigated. The results revealed that the Cu as electrode achieved maximum MRR followed by AgW, CuW, and W, respectively.

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Section: Introductionmentioning

confidence: 98%

Experimental Investigation on the Electrode Specific Performance in Micro-EDM of Die-Steel

Kadirvel

Hariharan

Gowri

2013

Materials and Manufacturing Processes

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“…The size of the crater produced by EDM is mainly determined by the energy of the pulse. 16,17 The surface roughness (R a ) varies as the MRR. These factors have been studied for different materials and have been reported in the literature, [17][18][19] which depends upon thermophysical properties of the work piece material.…”

Section: Resultsmentioning

confidence: 99%

Effect of processing parameters on structural features of tungsten carbide after electrical discharge machining (EDM)

Khatter¹,

Pandey²

2008

Tribology - Materials, Surfaces & Interfaces

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Tungsten carbide (WC) is an extremely hard material which is used extensively in the manufacturing of tools and dies. In the presence of cobalt as a binder its machining becomes a difficult task because of interfacial bonding. In the EDM process, where electrical energy is used for the machining of the substance, the heat generated due to the plasma is responsible for removal of the substance at the interface. The heat generated is conducted differentially because of the composite structure of the tungsten carbide cermet. In order to improve the technological performance it is essential to understand the morphological features of tungsten carbide after machining. The studies have been conducted using different machining parameters. The objective of this study is to analyse the impact of machining parameters on the morphology of tungsten carbide suitable to withstand impact load on press forging for small components during operation. Experiments have been performed with the specially designed fixtures with proper flushing arrangements, to avoid arcing during the process. WC of P20 grade which is one of the most suitable grade substances to withstand load after EDM, has been used as work piece material for the entire study. Copper, graphite and copper tungsten electrodes have been used for the present study. The morphological features were studied with the help of the scanning electron microscope (SEM). It was observed that structural features varied with variation in electrode under similar experimental conditions. Phenomenon of such structures is discussed at length. The formations of cracks on WC have also been studied in detail. The detail of this study is presented in the paper.

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“…The parameters of EDM which affects these responses are current, voltage, pulse on time (T-on), pulse off time (T-off), electrode material, dielectric used and operator skill etc. EDM does not make direct contact between the electrode and the work-piece, where it can eliminate mechanical stresses chatter and vibration problems during machining [2].…”

Section: Introductionmentioning

confidence: 99%

Effect of Rotary Tool on EDM Performance

Sidhu¹,

Chatha

2018

AJEAT

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Machining is a broad term which is used to describe removal of material from a work-piece. The rotary electrode discharge machining (EDM) has emerged as a successful technique to remove the material from the work surface of different materials such as tool steel, ceramic, metal matrix composite and inconel etc. In this study, the machining characteristics of the die steel of H-13 by using rotary electrode discharge machining (EDM) with a cylindrical electrode were investigated. Magnetic field assisted EDM has also been examined on the machining parameters (MRR, TWR and SR). From the results it is observed that rotary tool EDM showed the better results with regards to MRR and SR. The rotary electrode improves the machining performances due to better flushing of debris from the machining gap.

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A study of wear and surface finish during spark erosion machining of high speed tool steel

Cited by 7 publications

References 0 publications

Experimental Investigation on the Electrode Specific Performance in Micro-EDM of Die-Steel

Experimental Investigation on the Electrode Specific Performance in Micro-EDM of Die-Steel

Effect of processing parameters on structural features of tungsten carbide after electrical discharge machining (EDM)

Effect of Rotary Tool on EDM Performance

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