EDM is the most popular unconventional machining process. The present technology of EDM consists of a pulsed or capacitive type power supply in which the pulsed type power supply is more popular and effective. The following essential component of an EDM is its servo mechanism, which controls the gap between the electrodes and maintains the gap voltage. A low machining speed, complex power supply, and servo mechanism increase the cost of machining and the maintenance cost of an EDM machine. To resolve the above issues from the EDM, a novel servo mechanism has been developed, which is simple in design and low in cost and has the capacity to use direct current as a power source. The current work elaborates a brief description of the novel servo mechanism and its feasibility analysis. Pure DC power is employed with the conjunction of Maglev lucidity to refine the shortcomings of conventional micro EDM. The novel technology addresses the prime concerns of conventional micro EDMs and deficiencies such as the delayed response of mechanical actuators and a servo mechanism. The novel technology uses the logical arrangement of permanent magnets and electromagnets to address inadequacies such as short circuiting and arcing. The work outlook is to establish the viability of the novel Maglev EDM by a comparison with a similar range of parameters. The results on the novel technology showed an improved material removal rate (MRR), which was in the range of 76.6 μgm/min, whereas the specific energy and surface roughness were 33.4 Joule/microgram and 4.3 μm, respectively, while machining commercially pure titanium.

Titanium alloy has some important applications in the aerospace industries along with other sectors, but its machinability efficiently is still a topic of intent research. Several factors work together to hinder its effective machining by various cutting tools. Although work has been done to some extent by some well cutting tools such as carbide tools however, very little work has been stated and established by using CBN tools or cryogenically treated CBN tools. The review has been done elaboratively to bring out various aspects of titanium alloy and its machining by various conventional cutting tools along with the CBN cutting tool.

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The purpose of this paper is to evaluate the feasibility of a novel gap-controlled strategy for micro-EDM process using magnetic levitation. The tool is levitated and positioned accurately using a unique actuator arm. The actuator arm attained the required positioning accuracy in the thrust (Z) direction to ensure a uniform and smooth discharge free of arcing and short circuits. Experiments were carried out using a copper tool and EDM oil on Nimonic superalloy (Grade C-263). Material removal rate (79.26 µg/min), tool wear rate (19.75 µg/min), and average surface roughness (Ra = 1.196 µm) all proved the efficacy of the developed technology. Furthermore, the machining stability and average specific energy (1.7350 J/μg) were examined and compared to the experimental results of traditional EDM, as well as literature data. Maglev μ-EDM is substantially more stable than traditional EDM, according to a comparison of the current-voltage (V-I) curve. Microholes, micropores, recast layer, and other surface topographical features are detected in a low amount using FESEM. The bidirectional material movement and elemental diffusion are shown by elemental characterization using EDX analysis.

COVID 19 (Coronavirus) pandemic has created surge demand for essential good and other items like medical equipment and industries which were shut and need to revive back themselves again with new strategies and plan to bring the situation back towards normalcy the study also aimed to propose new technique including advantage of Industry 4.0 ethics to reduce the impact and tackle the situation of COVID-19 and post COVID-19. A detailed review of the literature is done on the technologies along with their Industry 4.0 applications during this COVID-19 pandemic, The review holds some basic and advance technologies application to enhance industrial safety and boosting the work culture to normal and efficient. Using appropriate search words on the databases of IEEE papers, Google Scholar and Research Gate. We found several useful applications which can be inculcated along with modern human-machine interfacing which can help for proper control and management of COVID-19 pandemic and these techniques are been discussed in this paper. Available technologies blend along with Industry 4.0 technique and procedure could also help the society to work and understand smartly and get aware of this methodology which can lead them to stay safe and secure along with maintaining working efficiency. Industry 4.0 can fulfil the requirements of society/community during this crisis’s situation. The new technique which firstly make assure that the induvial and belonging health and safety is first priority and their demand are need to be fulfil on time so that no one suffers. These Industry 4.0 technologies could provide a lot of innovative ideas and solution at from base local areas to global platforms. The supply chain partners and government bodies should work along with new technologies wisely for improving the services during COVID-19 and of any similar situations happening anywhere anytime.