MECHANICAL AND MICROSTRUCTURAL COMPARISON OF WIRE ELECTRICAL DISCHARGE MACHINING, LASER BEAM AND PLASMA ARC CUTTING PROCESSES
Abstract
In this study, laser, plasma, and Wire electrical discharge machining (WEDM) cutting methods were experimentally investigated by cutting S355JR structural steel and Hardox 450 martensitic steel. The effects of cutting processes on production speed, edge quality, surface quality and production tolerances are presented. The mechanical and microstructural effects of the cutting method on the cut samples were investigated. Laser beam, plasma arc cutting methods are widely used in industry. The WEDM method, on the other hand, has a more limited area of use compared to these two methods. It has been observed that the strength values of the samples cut from S355JR and Hardox 450 steels with these three methods affect the tensile and bending strengths depending on the cutting process. The maximum hardness values detected on the surfaces cut by WEDM, laser and plasma methods are 435, 440 and 481 HV, respectively. It was determined that 5 ± 0.72° vertical inclination (conicity) occurred on the cut surfaces of 8 mm thick sheets in plasma cutting, while a vertical inclination of 0.3 ± 0.15° occurred in laser cutting. In the WEDM method, it was determined that the cut edge did not form in this way. When the cut surface is examined, it can be sorted as Wire electrical discharge machining, plasma cutting, laser method in terms of dimensional tolerances and surface roughness success.
Keywords
Malzeme kesme teknolojileri , Lazer ışını , Plazma ark kesim
Kaynakça
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