Relationship between EDM parameters and surface crack formation

Lee, Hwa-Teng; Tai, Tzu-Yao

doi:10.1016/s0924-0136(03)00688-5

Cited by 280 publications

(185 citation statements)

References 11 publications

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“…Four current levels 3, 6, 9 and 12 ampere are investigated. These discharge currents are mostly used in finish machining [13,21]. Other electrical parameters kept unchanged throughout the study are; Pulse-On time 60 µm, Pulse-Off time 4 µm, voltage 110 V and gap 5 µm.…”

Section: Methodsmentioning

confidence: 99%

Determination of Residual Stress Distribution in High Strength Aluminum Alloy After Edm

Mehmood¹,

Sultan²,

Anjum³

et al. 2017

Adv. Sci. Technol. Res. J.

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Thermal energy produced by discrete and random electric sparks in electric discharge machining (EDM) melts surface material. A portion of this molten material is removed and the remaining material resolidified by rapid cooling in a hydrocarbon oil. The effect of repeated heating and cooling of the surface and sub surface material with complex temperature gradients results in residual stresses in machined parts. The aim of this investigation is to determine the distribution of residual stresses in the depth of machined material with respect to discharge current, most important electric parameter during EDM. It is well known that surface finish is dependent on discharge current. Therefore, investigations were carried out for smaller discharge current levels i.e. 3, 6, 9, 12 ampere. Hole-drill strain gauge method is used for the determination of residual stresses in the depth of material. For comparison purposes, residual stresses are also determined for conventionally turned specimens. This study provided quantitative analysis of the residual stresses for various discharge current in EDM which is a key parameter in deciding the service life of material.

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Section: Methodsmentioning

confidence: 99%

Determination of Residual Stress Distribution in High Strength Aluminum Alloy After Edm

Mehmood¹,

Sultan²,

Anjum³

et al. 2017

Adv. Sci. Technol. Res. J.

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“…The presence of high crack density is not desirable because it leads early product failure. Investigation of EDM parameters showed that higher pulse-on duration increased both the average white layer thickness and the induced stress (Lee and Tai, 2003;Ekmekci et al, 2005). These two conditions tend to promote crack formation.…”

Section: Surface Roughnessmentioning

confidence: 95%

Micro Eletro Discharge Milling for Microfabrication

Ali¹,

Mehfuz²,

Khan³

et al. 2012

Micromachining Techniques for Fabrication of Micro and Nano Structures

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“…Chropowatość powierzchni obrabianych elektroerozyjnie jest wynikiem wzajemnie nakładających się kraterów. W rezultacie wysokość nierówności jest tym większa, im większa jest energia poszczególnych impulsów [5], [6]. W wyniku przeprowadzonych badań wyznaczono zależność chropowatości Ra i Rz powierzchni obrabianej od czasu trwania impulsu t on .…”

Section: Wyniki Badańunclassified

High-performance Electrical Discharge Machining of deep hole in materials with low thermal conductivity

Sosinowski¹,

Rozenek²

2015

Mechanik

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Relationship between EDM parameters and surface crack formation

Cited by 280 publications

References 11 publications

Determination of Residual Stress Distribution in High Strength Aluminum Alloy After Edm

Determination of Residual Stress Distribution in High Strength Aluminum Alloy After Edm

Micro Eletro Discharge Milling for Microfabrication

High-performance Electrical Discharge Machining of deep hole in materials with low thermal conductivity

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