Selected Aspects of Surface Integrity of Inconel 625 Alloy after Dry-EDM in Carbon Dioxide

The dry-EDM process is environmentally neutral and enables to obtain good machining accuracy and relatively good surface quality. On the other hand, the application of dry-EDM is limited due to problems with the effective dissipation of heat from the machining zone and instability of material remova...

Full description

Saved in:
Bibliographic Details
Published in:Key engineering materials 2022-07, Vol.926, p.1681-1688
Main Authors: Skoczypiec, Sebastian, Żyra, Agnieszka, Bogucki, Rafał
Format: Article
Language:English
Subjects:
Carbon dioxide
Carbon dioxide removal
Deionization
EDM electrodes
Electric discharge machining
External pressure
Gas pressure
Integrity
Kinematics
Microhardness
Milling (machining)
Nickel base alloys
Superalloys
Surface layers
Surface properties
Surface stability
Workpieces
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The dry-EDM process is environmentally neutral and enables to obtain good machining accuracy and relatively good surface quality. On the other hand, the application of dry-EDM is limited due to problems with the effective dissipation of heat from the machining zone and instability of material removal. The machining of Inconel 625 alloy was carried out in the carbon dioxide as a dielectric supplied to the machining gap through the channel in the working electrode, in the milling kinematics. In one of the investigated variants, the workpiece was submerged additionally in the deionized water during machining. The main aim of this research was to determine an influence of EDM milling in carbon dioxide with and without external workpiece cooling on the workpiece technological surface integrity ie. roughness, morphology and microhardness. The pulse time, current amplitude and gas pressure were selected as investigated parameters. Obtained results indicate significant differences in surface layer properties for both investigated machining variants.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/p-o1809g