Numerical Simulation and Experimental Research on Rolling Process of 3-roll Cold-rolling Pipe Mill

Based on the simplified rolling process of the 3-roll cold-rolling pipe mill, the cold rolling process are FE numerically stimulated by means of the Simufact FE software according to the deformation characteristics of the process itself. Thanks to the said simulation, data of the steel pipe as being rolled are analyzed, including distribution law of both equivalent stress and equivalent strain, and sectional deformation characteristics, which are then compared with the actually-measured data. The analysis result reveals the facts as below. The FE math model as established is in compliance with the actual operation circumstances, i.e., the simulated process is in conformity to the actual pipe rolling/formation state. Metal plastic deformation occurs mainly in the diameter and wall thickness reducing sections. And the rolling force as produced by the roll is getting higher and higher along with increase of the feed amount and the roll speed.