Abstract
Increasing demands for transporting oil and natural gas promote the developing and production of high-grade pipeline steel. The hot rolling is a vital process to produce the steel plate of pipe fabrication. In a hot rolling line, a flying shear is used to shear the leading and trailing edges of a rough rolled plate. In the present research, three-dimensional FE model of flying shear was built on ABAQUS/Explicit, considering the motions of blades. The feeding rollers and shear blades are considered as rigid material, and the steel plate adopts elastic-plastic material model. Ductile damage criterion for X100 steel was built to simulate the material damage and fracture during the shear processing. By the simulation, the plastic deformation, the damage initiation and evolution, the fracture of steel plate can be obtained, which are coincided to production practise. The stroke-force curves of blades were generated from the FE simulation. The shearing force varying with the blade stroke was analyzed. FE simulation shows that the calculated force from FE model is much lower than that from empirical equation.
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