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针对同步轧制驱动等通道转角大应变技术中主动轮扭矩与总扭矩之比过大的问题,采用有限元软件Defrorm-3D研究了异步轧制对轧制驱动等通道转角大应变技术的影响,分析了工件的大应变过程。结果表明:采用下轮比上轮转速低的异步轧制驱动,能够降低主动轮扭矩;与同步轧制驱动相比,可有效缓解主动轮扭矩与总扭矩之比过大这一现象,但其产生的有效应变有所降低。当下轮的转速在0.1rad/s或以下时,工件的形貌较为光整;反之工件表面则出现严重的凹凸不平,甚至出现局部开裂现象。在对称转速下,当下轮比上轮的转速低时,装置的能耗特性低。
Aiming at the problem that the ratio of the driving torque to the total torque is too large in the technology of large-angle rotation, such as synchronous rolling drive, the influence of asynchronous rolling on the large-angle rotation technology of the passway such as the rolling drive is studied by finite element software Defrorm- Analysis of the workpiece of the large strain process. The results show that the torque of the capstan can be reduced by adopting asynchronous rolling drive with lower speed than that of the previous one. Compared with the synchronous rolling drive, the ratio of the capstan torque to the total torque can be effectively mitigated. However, The resulting effective strain is reduced. When the next round of speed at 0.1rad / s or less, the shape of the workpiece is more polished; the other hand, there are serious uneven surface of the workpiece, and even partial cracking phenomenon. At symmetrical speeds, the energy consumption characteristics of the device are low when the next wheel speed is lower than the previous wheel speed.