Effect of current and Deep Cryogenic Treated EDM electrodes on surface roughness of AISI D3 steel

摘要

The paper present the effect of current flow and Deep Cryogenic Treatment (DCT) on the Surface Roughness (SR) of AISI D3 steel machined using EDM. The EDM tool is modified using deep cryogenic treatment to obtain positive results. Cryogenic treatment is a add on process over conventional heat treatment processes which converts retained austenite to martensite along with formation of nano sized carbide. The treatment enhance the properties of materials like wear resistance, hardness, dimensional stability, thermal conductivity and tool consumption rate which are recognized as a important factors in industries. The results show that increase in current level enhance the surface roughness, while deep cryogenic treated electrodes produces less surface roughness as compared to that of non-cryogenic treated electrodes.