Automatic Modeling And Simulation Analysis Of ABAQUS In Mrolling Process Based On Python

With the development of China's economy and the increasing demand for seamless steel tubes,the technology of seamless steel tubes has made remarkable progress.The continuous rolling process of seamless steel tube is the key process in its production process,which directly affects the quality and accuracy of finished steel tube.In this paper,a three-dimensional thermo-mechanical coupled finite element analysis model of Shanghai Baosteel_?140 fully floating mandrel steel tube continuous rolling mill is established by using Abaqus software.By simulating the rolling process of ?119×25mm steel pipe,the stress-strain and movement law of metal under different pass conditions were studied,and the influence of speed system on rolling process was analyzed.The main research results of this paper are as follows:(1)Aiming at the problems of error-prone,manual submission of work and time-consuming and labor-consuming in simulation modeling of ?140 unit,a digital simulation system for 119-pass steel tube continuous rolling was developed based on Python language.With this digital simulation system,the automatic modeling of seamless steel tube continuous rolling process,the submission of multiple tasks and the extraction of post-processing results are realized.The system guarantees the accurate modeling operation and accuracy of the established model,reduces the heavy repetitive work,and provides a good simulation test platform for technicians to study the technological characteristics of c140 continuous rolling mill and select the technological parameters.(2)The variation of temperature field,stress-strain field and rolling force-energy parameters in the process of continuous rolling of steel pipe with ?119×25mm gauge was studied by using the established digital simulation system.During the rolling process,the maximum temperature inside the steel tube is 1063?,and the equivalent stress at the top of the roll hole is obviously greater than that at the gap.The maximum rolling force appears on the second stand,and the rolling force generally shows a downward trend.(3)The deformation law of steel tube in continuous rolling process is deeply studied,and the cause of "swallow tail" in the process of steel tube continuous rolling is analyzed.During the rolling process of steel pipe,the metal flow at the top of hole is not uniform in axial direction and transverse direction,and the local deformation at the head and tail of steel pipe is more obvious.(4)Aiming at the configuration of steel pipe speed system,the basic speed parameters provided by actual production are analyzed based on finite element simulation.Comparing and calculating ?119×25mm and ?119×4mm steel pipes,the effect of roll speed on rolling force and wall thickness was found.The change of roll speed will cause the change of cross section size in roll gap area,while the top and side wall areas have little change.