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采用MSC.marc三维大变形热力耦合弹塑性有限元软件和接触分析技术,对半挂车轴空心管坯正挤横轧过程进行了仿真分析,研究了推挤速度、轧辊工作角、轧辊交错布置工艺参数对力能与管坯局部变形的影响规律。结果显示:随着推挤速度的增大,轧辊驱动扭矩与轧制力逐渐增大;随着轧辊工作角的增大,推挤载荷与管坯增厚也随之增大;当轧辊工作角过大时,管坯台肩处金属堆积严重,不利于金属流动;过小不利于生产率的提高与管坯增厚。轧辊交错布置有利于推挤力与驱动扭矩的减小,并对金属流动均匀性与管坯增厚有利。
Using MSC.marc three-dimensional large deformation thermal-mechanical coupled elastic-plastic finite element software and contact analysis technology, the semi-trailer hollow shaft billet is cross-rolling process is simulated and analyzed, the extrusion speed, roll angle, roller staggered layout process Influence of Parameters on Force and Local Deformation of Tube. The results show that with the increase of the pushing speed, the driving torque and the rolling force of the roll increase gradually. As the working angle of the roll increases, the pushing load and the thickening of the tube blank also increase. Too large, the tube blanket metal accumulation serious, is not conducive to metal flow; too small is not conducive to the improvement of productivity and thickening of the tube. Staggering of the rolls facilitates the reduction of the pushing force and the driving torque, and is advantageous for uniformity of metal flow and thickening of the tube.