Investigation the effect of negative polarity of surface roughness and metal removal rate during EDM process

Joint Authors

Taqi, Shahd Adnan
Shathir, Sad K.

Source

Engineering and Technology Journal

Issue

Vol. 38, Issue 12A (31 Dec. 2020), pp.1852-1861, 10 p.

Publisher

University of Technology

Publication Date

2020-12-31

Country of Publication

Iraq

No. of Pages

10

Main Subjects

Civil Engineering

Topics

Abstract EN

The Electro discharge machine that named (EDM) is used to remove the metal from the workpiece by spark erosion.

The work of this machining depends on the multiple variables.

One of the most influential variants of this machine is the polarity, the material of the electrode, the current and the time pulses.

Essentially the polarity of the tool (electrode) positive and the work piece is negative, this polarity can be reversed in this paper was reversed the polarity that was made the tool (electrode) negative and the work piece was positive.

The aim of this paper was focused on the influence of reversed the polarity (negative) with changing the electrode metal (copper and graphite) on the surface roughness and metal removal rate by using different parameters (current and pulses of time).

Experiments show that: the copper electrode gives (best surface roughness 0.46 µm when the current 5 Am and Ton 5.5 µs) and (worst surface roughness 1.66 µm when the current is 8 A and Ton 25 µs).

And give (best values of the MRR 0.00291 g/min when the current is 8 and Ton 25 µs) and (The lowest values of MRR (0.00054 g/min when current is 5 and Ton 5.5 µs).

The graphite electrode gives (best surface roughness 2.07 µm when the current 5 Am and Ton 5.5 µs) and (worst surface roughness 4.17 µm when the current is 8 A and Ton 25 µs).

And give (best values of the MRR 0.05823 g/min when the current is 8 and Ton 25 µs) and (The lowest values of MRR (0.00394 g/min when current is 5 and Ton 5.5 µs)

American Psychological Association (APA)

Taqi, Shahd Adnan& Shathir, Sad K.. 2020. Investigation the effect of negative polarity of surface roughness and metal removal rate during EDM process. Engineering and Technology Journal،Vol. 38, no. 12A, pp.1852-1861.
https://search.emarefa.net/detail/BIM-1020852

Modern Language Association (MLA)

Taqi, Shahd Adnan& Shathir, Sad K.. Investigation the effect of negative polarity of surface roughness and metal removal rate during EDM process. Engineering and Technology Journal Vol. 38, no. 12A (2020), pp.1852-1861.
https://search.emarefa.net/detail/BIM-1020852

American Medical Association (AMA)

Taqi, Shahd Adnan& Shathir, Sad K.. Investigation the effect of negative polarity of surface roughness and metal removal rate during EDM process. Engineering and Technology Journal. 2020. Vol. 38, no. 12A, pp.1852-1861.
https://search.emarefa.net/detail/BIM-1020852

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 1860-1861

Record ID

BIM-1020852