Analysis of Cnc Plasma Cutting Parameters on Surface Roughness And Hardness Of Low Carbon 1010 Steel

Abstract

Low carbon steel 1010 material is extensively used in industries machines due to low cost, high productivity and better mechanical strength to make various products used in daily life such as mounting plates, tool and die sets, machinery parts, special bolts. The influence of plasma arc cutting process parameters were investigated on surface roughness and hardness of cutting zone for steel 1010 material with thickness of 4 mm. Three cutting parameters have been selected: arc current, cutting speed and arc distance. ANOVA (analysis of variance) was adopted to show the major influencing parameters on surface roughness and hardness of cutting zone. The cutting speed with was with higher contribution percentage of 58.25% for roughness and 43.04% for hardness. The optimal conditions of cutting parameters to obtain minimum surface roughness at the cutting zone were 110 A for the arc current, cutting speed of 1000 mm/min, arc distance of 5mm, and for minimum hardness: arc current = 80 A, cutting speed = 4000 mm/min and  arc distance = 5mm.