Computer simulation of three- and four-high screw rolling of titanium nickelide billets was carried out using QForm finite-element software. Based on the results of the computer simulation, the parameters of the stress–strain and kinematic states are compared. The paths of several points located on the billet radius during rolling were plotted. The normalized Lode angle at these points was calculated. The spread of values of the normalized Lode angle in three-high rolling is wider by a factor of 5 than in four-high rolling. The spread of values of the normalized mean stress is almost the same for both types of rolling. The increment of strain per 1 mm of the path in the deformation zone during four-high screw rolling is less by 43% than during three-high rolling. This suggests that the strain state is softer during four-high rolling and more preferable for rolling low-ductility and difficult-to-form materials. It was found out that the qualitative change in the total velocity of the tracked points in the deformation zone is the same for both types of rolling: the total velocity of the central layers of the billet increases, while the total velocity of the surface layers decreases.

利用QForm有限元软件对镍化钛坯料的三辊和四辊螺旋轧制进行了计算机模拟。根据计算机模拟的结果，对应力应变和运动状态的参数进行了比较。绘制了轧制过程中位于钢坯半径上的几个点的路径。计算这些点处的归一化洛德角。三辊轧制中的归一化罗德角值的分布比四辊轧制中的分布宽 5 倍。对于两种类型的轧制，归一化平均应力值的分布几乎相同。四辊螺杆轧制时变形区每1mm路径的应变增量比三辊轧制时小43%。这表明四辊轧制过程中应变状态更软，更适合轧制低延展性和难成形材料。结果发现，两种轧制方式变形区跟踪点总速度的质变是相同的：坯料中心层总速度增加，而表层总速度减小。