Experimental and Numerical Investigation of the Shearing Process Square Tube Steel

Metal forming is not only used for sheet metal but also applied to tube metal. Many recent studies have shown that the parameters such as clearance, velocity cutting, blank force holder, the radius of punch and die, and friction constant have been optimized in sheet metal forming. However, the processing parameters in manufacturing square tubes are still being studied, and not many results are found in the literature. In this paper, the clearance between punch and die in forming square tube steel is computationally simulated and experimentally analyzed. The shearing punch is made of SKD11 cold-work tool steel. Simulations and experiments are carried out for tube steel with the thickness of 1.2, 1.4, 1.8, and 2 mm in 0.16 mm die clearance. The effect of clearance, dimension crosssection, and length of materials on the burr height is presented. The obtained results provide rational parameters for shearing blades working in particular conditions