A Role of cryogenic in Wire cut EDM process

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.

Experimental comparison of near-dry and cryogenically cooled near-dry machining in wire-cut electrical discharge machining processes

“…Taguchi analysis of MRR of NDWEDM and cryogenic cooled NDWEDM are shown in tables 6 and 7. In the NDWEDM, the contribution of control variables on MRR was 28.60% pulse width, 22.38% current, 15.70% air pressure, 15.11% pulse interval, and 4.93% The MRR has been increased by increasing pulse width from 15 μs to 25 μs due to more debris due to increase the size of the crater and reduce the spark intensity [27]. It has also been increased by increasing spark current from 3A μs to 5A due to high spark intensity between the wire and workpiece [24].…”

“…The high-strength low alloy is cut by cryogenically treated brass wire to compare the cutting speed with the untreated process [26]. In 2020, the influence of various parameters on different work materials using cryogenically cooled wire tools in conventional WEDM processes has been deeply reviewed [27]. Very recently, It was concluded that the wear rate of the molybdenum wire electrode was reduced by cryogenic cooled treatments [19,28].…”

Experimental Investigation and Multi-Objective Optimization of Cryogenically Cooled Near-Dry Wire-Cut EDM Using TOPSIS Technique

“…It was observed that 13.25% of tool wear and 15.75% in surface irregularity have been reduced by the cryogenically treated EDM process [41,42]. Dimensional accuracy, tool wear rate, surface roughness, the material removal rate of cryogenic treated WEDM process have been investigated to find the best parameters [43]. As per the aforementioned literature, the cryogenic treated tools and workpieces were experimented with reducing the TWR, and SR, and increased the MRR by controlling various parameters in the conventional EDM and WEDM processes.…”