高合金钢冷轧工作辊锻造过程数值模拟

采用Deform-3D软件对一种新型高合金钢冷轧工作辊锻造以及锻前空冷过程进行数值模拟。首先,根据实际产品和液压机压头尺寸建立锻件和模具模型并进行了网格划分,对所采用的高合金钢进行热力学测试从而建立了材料模型。通过分析在空冷和锻造过程中锻件温度场和应力场分布,获得了锻件在空冷过程中温度变化规律,以及在锻造过程中锻造区域典型位置处的温度和应力分布特征。此外,参考模拟结果,并结合实际经验对这种新型冷轧工作辊进行锻造,实际锻造结果与模拟得到的最终结果十分接近,验证了采用有限元方法对轧辊锻造过程进行模拟是可行的。为冷轧工作辊的实际锻造生产提供理论指导。

Numerical simulation of forging process for high alloy steel cold work roller

Numerical simulation of forging process and air-cooling process before forging for a novel high alloy steel cold work roller was conducted by software Deform-3 D. Firstly,according to the sizes of real product and head of hydraulic machine,the models of forging part and mold were established and meshed,and the thermodynamic measurement of the adopted high alloy steel was conducted and the material model was built. Then,through analyzing the distribution of temperature field and stress field for forging part during the air-cooling and forging process,the change law of temperature for forging part during the air-cooling process was obtained,and the temperature and stress characteristics at typical positions in the forging area during the forging process were given. In addition,the novel cold work roller was forged referring to the simulated results and combining with the actual experience,and the actual forging results were quite close to the simulated results. Thus,the feasibility of simulating the forging process by finite element method was verified to provide theoretical guidance for the actual forging production of cold work roller.