共查询到20条相似文献,搜索用时 62 毫秒
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根据现有的各种交叉轧制方式的特点及其应用状况,分析了影响交叉轧制精度的各种因素,探讨了精确实现交叉轧掉的途径和方法,这对于提高交叉轧制的轧制精度及其更好应用有一定的指导意义。 相似文献
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对异步交叉轧制的轴赂力特性进行了系统的实验研究。分析了轧制过程中支承辊和工作辊轴向力的形成特点,研究了各因素对轴向力影响的基本规律,并观察了软件的运行特点。 相似文献
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异步交叉轧制的轴向力研究 总被引:2,自引:0,他引:2
为阐明异步交叉轧制的轴向力特性,在自行研制的首架异步交叉轧机上进行了系统的实验研究。结果表明:在轧制过程中,支承辊和工作辊轴向皆呈非线性增长态势,且工作辊轴向力波形起伏较大,其起始时刻滞后于支承辊;交叉角和异步比等因素对工作辊轴向力Faw的的影响规律为交叉角增大,FAW增大,当交叉角大于临介交叉角以后,FAW下降、FAW随异步比增大而略有增加,在异步交叉轧制下,轧制运行无跑偏。 相似文献
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A simulation model for two-roll cross wedge rolling (CWR) was presented by using three-dimensional rigid-plastic finite element method (FEM).The whole forming process of CWR,including knifing zone,guiding zone,stretching zone,and sizing zone,was simulated using the model in which dynamic adaptive remeshing technology for tetrahedral solid elements was used to fix element distortion.Based on the simulation results,the distributions of metal flow field,strain field,and damage field,and the geometry of the workpiece's end were analyzed.These results could provide theoretical guidance for realizing net shaping and reasonable design of tools. 相似文献
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介绍了用APPLE-Ⅱ微型计算机和光栅脉冲发生器测量楔横轧轧制转速和确定轧制半径的普遍方法,并指出在条件许可的情况下,只要尽量选用高码道的脉冲发生器就可以提高测量精度。且以某锥体零件毛坯轧制的轧制转速和轧制半径测量为例,证明了这一方法是可行的。 相似文献
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在对楔入轧制过程分析的基础上,建立了板式楔横轧楔入轧制接触面的数学模型,确定了轧制接触面方程及其边界方程,以及不同工艺条件、不同轧制阶段下的接触面几何形式. 相似文献
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Zbigniew Pater 《钢铁研究学报(英文版)》2013,20(10):46-50
The multi-wedge cross rolling process of forming balls is described. The process tool for rolling 8 balls with a diameter of 35 mm is presented. The course of the rolling process, distributions of forming forces as well as maps of effective strain and temperature in the obtained balls are presented by finite element modeling (FEM). Experimental tests of simultaneous forming of 4 balls with a diameter of 22 mm conducted in laboratory conditions at Lublin University of Technology have proved that the balls obtained in multi-wedge cross rolling are of good quality and can therefore be used in both ball mills and rolling bearings. 相似文献