Abstract
Novel techniques are being focused on the enrichment of the performance characteristics under different machining processes. Cryogenic is one of such novel practices that tunes the surface integrity with vast variations with the traditional machining processes. Dimensional accuracy, surface roughness, material removal rate with less reduction in scrap of material is one of the prior targets of production process. Wire cut Electro Discharge Machining (WEDM) is one method that satisfy with upgrading performance characteristics. In order to step-up these performance characteristics in attaining superior quality, cryogenics practices have collaborated with the WEDM process. Present paper deals with the reviews of the researchers that have been performed over cryogenic treated WEDM process. Effect of performance characteristics like pulse on, pulse off, current, voltage, wire tension, wire feed is discussed with relation to material removal rate, tool wear rate and surface roughness evolved. Key concept of paper is to include the research ideology with best feasible techniques that can prevail in production practice in order of contribute to the forthcoming researches in industrial and production departments.
Highlights
Wire cut electro-discharge is one of the non-traditional process in which the workpiece with machined without any direct contact of tool to the workpiece
Current, type of electrode wire are the factors that contributes to the surface roughness, whereas pulse off time voltage and wire feed rate tunes the material removal rate
After treating the brass wire mechanical tests proved that 24.8% of electric conductivity has increased but 5.64 % of decrease could be observed in tensile strength of brass.[c-10] experientally proved that wiretension doesnot effect the surface roughness
Summary
Wire cut electro-discharge is one of the non-traditional process in which the workpiece with machined without any direct contact of tool to the workpiece. As the machining term WEDM titled, process is done purely with the discharge of electrons with in the tool (wire) and workpiece. At the contact zone of wire to metal, sparks are produced which further proceeds in erosion to workpiece. With this key principle methodology the machining is done. The fields of mechanical machining for their good performance while machining operations They increase the hardness of materials with making it homogenous. Cryogenic treatments are used in various mechanical machining processes such as in Drilling [2], Milling [3], Bending [4], Tool hardening [5], forming and grinding [6], Turning [7]. Cryogenic treatment can be done without tempering the metal [10]
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