Influence of electrical discharge machining on the sliding contact response of cemented carbides

Wear Characterization of Cemented Carbides (WC–CoNi) Processed by Laser Surface Texturing under Abrasive Machining Conditions

“…Current research validates the view that LST is suitable to machine hard materials, such as cemented carbides and ceramics [8][9][10]. Different from other non-abrasive shaping routes, such as electrical discharge machining (EDM), common damage induced by thermal-related machining (e.g., [11]) is effectively reduced during LST [12,13]. Accordingly, laser induced patterns on cemented carbide have resulted in satisfactory findings regarding tribological applications, particularly in terms of reducing friction of the contacting surfaces [14,15].…”

Abrasive micro-blasting to improve surface integrity of electrical discharge machined WC–Co composite

“…Nanoindentation and SEM results show the heat-affected zone has more compact microstructure and higher hardness and modulus of elasticity than that of the bulk material [6]. The recast layer with craters, cracks, and bubbles deteriorates the surface properties and reduced the wear and fatigue life of EDM mechanical parts [2][3][4][5][6]. In this study, the abrasive microblasting process was applied to remove the damaged surface layers and improve the surface integrity of WC-Co parts machined by wire EDM.…”

“…Although EDM can machine precise, complex, and intricate MMC components [1][2][3][4], the undesired surface recast layer and sub-surface heat-affected zone (HA) are generated [5]. Fig.…”

A study on the fine-finish die-sinking micro-EDM of tungsten carbide using different electrode materials

“…Lee and Li (2003) have studied the surface integrity of the machined workpiece in the EDM of WC. The correlation between EDM and surface integrity and its influence on the sliding contact response of a fine grained WC-Co has been discussed by Llanes et al (2001). Although extensive research has been conducted on the EDMed surface of WC, most of them were carried out for conventional EDM using transistor-type pulse generator, and studies on the finefinish micro-EDM of WC using RC-type pulse generator are still scarce.…”