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Study on the Metal's Plastic Flow Characteristics during Rail Universal Rolling

机译：铁路万能轧制过程中金属塑性流动特性的研究

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For studying the metal's three-dimensional plastic flow rule along the rolling direction and spread direction during rail universal rolling, the longitudinal flow was predicted by deriving elongation coefficient of different parts of rail based on the law of constant volume before and after workpiece was rolled. Moreover, the integrated deformation influence factor was introduced into this mathematical model to express the influence of the spread coefficient and the reduction coefficient of different parts of rail on the metal's three-dimensional plastic flow. In addition, for determining the cross-section's lateral flow characteristics of rail universal rolling, the universal rolling process of 50kg/m rail was accomplished and the lateral flow displacement and velocity between the linking zone of the web and base or head of rail.
机译：为了研究金属在万能轧制过程中沿轧制方向和扩展方向的三维塑性流动规律，根据工件轧制前后的等体积定律，通过推导钢轨各部分的伸长系数来预测纵向流动。此外，将综合变形影响因素引入该数学模型中，以表达钢轨不同部位的扩展系数和折减系数对金属三维塑性流动的影响。此外，为了确定钢轨万能轧制的横截面横向流动特性，完成了50kg / m钢轨的万能轧制过程，并确定了腹板连接处与钢轨基部或钢轨头部之间的横向流动位移和速度。

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