304不锈钢管坯三辊行星旋制过程数值模拟

Numerical simulation on three-roll planetary rolling process for 304 stainless steel pipe blank

为探究三辊行星轧制工艺在高强度合金管材加工领域中应用的可行性,通过确定轧辊和轧件之间的坐标变化矩阵,利用Abaqus有限元模拟软件建立了三辊行星轧制的前处理模型,并对304不锈钢管的三辊行星旋轧过程进行了仿真处理,研究了管坯加工过程中的金属变形行为。通过分析仿真结果中的金属流动行为、变形规律、轧制力以及管坯圆整度,验证了304不锈钢管材三辊行星轧制工艺的可行性。结果显示,304不锈钢管材在轧制过程中具有稳定的轧制力,管坯变形量可达到75%,管坯圆整度良好,并且管坯表面无明显螺旋痕迹。这些模拟结果对于高强度合金管材的三辊行星轧制工艺研究具有重要意义。

In order to explore the feasibility of application for the three-roll planetary rotary rolling process in the high-strength alloy pipe processing field,the pre-treatment model of three-roll planetary rolling was established by determining the coordinate change matrix between roller and rolled piece and using finite element simulation software Abaqus.Then,the three-roll planetary rolling process of 304 stainless steel pipe was simulated,and the deformation behavior of metal during the pipe blank processing was studied.Furthermore,by analyzing the metal flow behavior,deformation law,rolling force and roundness of tube blank in the simulation results,the feasibility of the three-roll planetary rolling process of 304 stainless steel pipe was verified.The results show that 304 stainless steel pipe has a stable rolling force during the rolling process,the deformation amount of tube blank reaches 75%,the roundness of tube blank is good,and the surface of pipe blank has no obvious spiral marks.Thus,these simulation results are of great significance for the three-roll planetary rolling process study of high-strength alloy pipes.