![]() Moving the torch creates a kerf with a clean cutting edge. Cutting is also possible under water but performance decreases with increasing water depth. Because this process is an electric circuit, its field of application is limited to metals. The material thickness to be cut has a physical limit of about 180 mm, depending on the possible length of an electric arc, which, in turn, depends on the output voltage of the power source used.ġ2.4. Manual cutting with plasma arc of a water loop line out of 40 mm stainless steel. Cut 40 plasma cutter circuit diagram manual# In addition, underwater segmenting of the highly activated internals of a reactor pressure vessel has been undertaken by plasma arc cutting in several decommissioning projects. This process is not only capable of cutting thin sheet structures such as steam- and water-separators but also other internals, up to a material thickness of 130 mm ( Pfeifer et al., 2004). ![]() Cut 40 plasma cutter circuit diagram manual#Ī thickness of 20 mm was successfully cut in water at a depth of 20 m ( Steiner and Priesmeyer, 2003).Įquipment for remote-controlled handling of an underwater plasma torch (which moves along a planned cutting line) is commercially available. ![]() The optimum level obtained of MRR is 5.4 gm/s, and value of Ra is 13.55 µm at cutting speed 1400 mm/s, SOD 0.3 mm, cutting current 105 A, and voltage 155 V. Taguchi technique with grey relational analysis is applied to optimize the response variables. Analysis of variance (ANOVA) was performed to find out the significant impact of each variable. During the experiment, cutting speed, stand-off distance (SOD), current and voltage are considered as input process parameters. Experimental studies are conducted on a nickel-based alloy Inconel-718 material of size 200 mm × 100 mm × 8 mm of rectangular shape using PAC. In current study, grey relation analysis (GRA) is applied for optimization of output process variables of PAC. Plasma arc cutting (PAC) is an advanced machining process, broadly used in industrial applications for cutting at higher speed for hard materials. ![]() In current phase, several industries are shifting from traditional machining process to advance machining process to high precision and accuracy. ![]()
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