This study presents a novel method using a disk-like sample to assess the workability of metal during the cross wedge rolling (CWR) process. Using this method, we can quantitatively evaluate the moment destruction which occurs at the center of the sample during CWR. In this study, 45 steel was selected to demonstrate the proposed method. Firstly, we designed a model for the tools and sample, conducted finite element simulations to analyze the distribution regulations of metal flow, stress, and strain, and evaluated the relationship between the damage and moving distance of the tool during the forming process. Then, we obtained the optimal deformation temperature range, rolling speed, and geometry parameters for the tool. Finally, experiments were conducted from 20 °C to 1 200 °C to verify the accuracy of the developed model. It was demonstrated that the model was significantly accurate in accessing the workability of 45 steel in the CWR process. The proposed method could be generalized to investigate the CWR process for other materials, such as aluminum alloys, superalloys, titanium alloys, etc.

这项研究提出了一种新方法，该方法使用盘状样品评估楔横轧（CWR）过程中金属的可加工性。使用这种方法，我们可以定量地评估在CWR过程中发生在样品中心的力矩破坏。在这项研究中，选择了45种钢来证明所提出的方法。首先，我们为工具和样品设计了一个模型，进行了有限元模拟，以分析金属流动，应力和应变的分布规律，并评估了成形过程中工具的损伤与移动距离之间的关系。然后，我们获得了该工具的最佳变形温度范围，轧制速度和几何参数。最后，在20°C至1200°C的温度范围内进行了实验，以验证所开发模型的准确性。结果表明，该模型在获取45钢在CWR过程中的可加工性方面非常准确。所提出的方法可以推广到其他材料的CWR工艺研究中，例如铝合金，高温合金，钛合金等。