Gaseous assisted powder mixed near dry EDM (GAPMND-EDM) is one of the recent hybrid technologies, which not only enhance the machining performance, but at the same time, high quality products with better surface quality characteristics can also be achieved. In this study, the response parameters were material removal rate, surface finish, micro hardness and residual stress. It was found that the maximum material removal rate (MRR 3.379 mg/min) was achieved with combination of (dielectric) oxygen gas with graphite powder while lowest surface roughness (SR 1.11 μm) was found to be with dielectric argon gas with graphite additives. Highest micro hardness (MH) and lowest residual stress (RS) was 820.30 Vickers hardness number (VHN) and 229 MPa found with dielectric combination of zinc additives with argon gas.

气态辅助粉末混合近干电火花加工（GAPMND-EDM）是最近的混合技术之一，它不仅提高了加工性能，而且还可以获得具有更好表面质量特性的高质量产品。在这项研究中，响应参数是材料去除率，表面光洁度，显微硬度和残余应力。结果发现，（介电）氧气与石墨粉的结合可实现最大材料去除率（MRR 3.379 mg / min），而石墨烯添加剂的介电氩气则具有最低的表面粗糙度（SR 1.11μm）。锌添加剂与氩气的电介质组合发现，最高显微硬度（MH）和最低残余应力（RS）为820.30维氏硬度值（VHN）和229 MPa。