Investigation of the effect of electrochemical polishing on EDM surfaces

H. Ramasawmy, L. Blunt

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Any surface generated by a manufacturing process bears a number of 'scars' due to the inherent nature of the process. In the electro discharge machining (EDM) process, the extremely high temperature generated, and the quenching effect of the dielectric at the end of each discharge lead to the formation of a hard and brittle white layer. It is important to remove the defects introduced by a manufacturing process so as to improve the functionality of the component/part. The aim of this work is to study the effect of parameters of electrochemical polishing on the 3D surface texture parameters of EDM surfaces of tool steel specimens. The results have shown a dominant effect due to the direct current of the cell, and there is a limiting value of the interelectrode gap for any given value of current density. A high influence of the interactive effect of current density and electrode gap was also observed. This information would be very useful in choosing the appropriate magnitude of the process parameters in order to engineer the surface to meet the in-service requirements, since the 3D surface texture parameters, particularly, the S ds, S dr and the volume parameters can give quantitative information with respect to the functionality of a surface, such as the load bearing and fluid retention capabilities as well as running in wear, etc.

Original languageEnglish
Pages (from-to)1135-1147
Number of pages13
JournalInternational Journal of Advanced Manufacturing Technology
Volume31
Issue number11-12
DOIs
Publication statusPublished - Feb 2007

Fingerprint

Electrolytic polishing
Electric discharge machining
Current density
Bearings (structural)
Textures
Tool steel
Quenching
Wear of materials
Engineers
Defects
Electrodes
Fluids

Cite this

@article{7cf8189ea5134aa3977506a5342bc808,
title = "Investigation of the effect of electrochemical polishing on EDM surfaces",
abstract = "Any surface generated by a manufacturing process bears a number of 'scars' due to the inherent nature of the process. In the electro discharge machining (EDM) process, the extremely high temperature generated, and the quenching effect of the dielectric at the end of each discharge lead to the formation of a hard and brittle white layer. It is important to remove the defects introduced by a manufacturing process so as to improve the functionality of the component/part. The aim of this work is to study the effect of parameters of electrochemical polishing on the 3D surface texture parameters of EDM surfaces of tool steel specimens. The results have shown a dominant effect due to the direct current of the cell, and there is a limiting value of the interelectrode gap for any given value of current density. A high influence of the interactive effect of current density and electrode gap was also observed. This information would be very useful in choosing the appropriate magnitude of the process parameters in order to engineer the surface to meet the in-service requirements, since the 3D surface texture parameters, particularly, the S ds, S dr and the volume parameters can give quantitative information with respect to the functionality of a surface, such as the load bearing and fluid retention capabilities as well as running in wear, etc.",
keywords = "Current density, Electrochemical polishing, Electrode gap, Sodium nitrate",
author = "H. Ramasawmy and L. Blunt",
year = "2007",
month = "2",
doi = "10.1007/s00170-005-0302-8",
language = "English",
volume = "31",
pages = "1135--1147",
journal = "International Journal of Advanced Manufacturing Technology",
issn = "0268-3768",
publisher = "Springer Verlag",
number = "11-12",

}

Investigation of the effect of electrochemical polishing on EDM surfaces. / Ramasawmy, H.; Blunt, L.

In: International Journal of Advanced Manufacturing Technology, Vol. 31, No. 11-12, 02.2007, p. 1135-1147.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Investigation of the effect of electrochemical polishing on EDM surfaces

AU - Ramasawmy, H.

AU - Blunt, L.

PY - 2007/2

Y1 - 2007/2

N2 - Any surface generated by a manufacturing process bears a number of 'scars' due to the inherent nature of the process. In the electro discharge machining (EDM) process, the extremely high temperature generated, and the quenching effect of the dielectric at the end of each discharge lead to the formation of a hard and brittle white layer. It is important to remove the defects introduced by a manufacturing process so as to improve the functionality of the component/part. The aim of this work is to study the effect of parameters of electrochemical polishing on the 3D surface texture parameters of EDM surfaces of tool steel specimens. The results have shown a dominant effect due to the direct current of the cell, and there is a limiting value of the interelectrode gap for any given value of current density. A high influence of the interactive effect of current density and electrode gap was also observed. This information would be very useful in choosing the appropriate magnitude of the process parameters in order to engineer the surface to meet the in-service requirements, since the 3D surface texture parameters, particularly, the S ds, S dr and the volume parameters can give quantitative information with respect to the functionality of a surface, such as the load bearing and fluid retention capabilities as well as running in wear, etc.

AB - Any surface generated by a manufacturing process bears a number of 'scars' due to the inherent nature of the process. In the electro discharge machining (EDM) process, the extremely high temperature generated, and the quenching effect of the dielectric at the end of each discharge lead to the formation of a hard and brittle white layer. It is important to remove the defects introduced by a manufacturing process so as to improve the functionality of the component/part. The aim of this work is to study the effect of parameters of electrochemical polishing on the 3D surface texture parameters of EDM surfaces of tool steel specimens. The results have shown a dominant effect due to the direct current of the cell, and there is a limiting value of the interelectrode gap for any given value of current density. A high influence of the interactive effect of current density and electrode gap was also observed. This information would be very useful in choosing the appropriate magnitude of the process parameters in order to engineer the surface to meet the in-service requirements, since the 3D surface texture parameters, particularly, the S ds, S dr and the volume parameters can give quantitative information with respect to the functionality of a surface, such as the load bearing and fluid retention capabilities as well as running in wear, etc.

KW - Current density

KW - Electrochemical polishing

KW - Electrode gap

KW - Sodium nitrate

UR - http://www.scopus.com/inward/record.url?scp=33846695724&partnerID=8YFLogxK

U2 - 10.1007/s00170-005-0302-8

DO - 10.1007/s00170-005-0302-8

M3 - Article

VL - 31

SP - 1135

EP - 1147

JO - International Journal of Advanced Manufacturing Technology

JF - International Journal of Advanced Manufacturing Technology

SN - 0268-3768

IS - 11-12

ER -