论文部分内容阅读
以楔横轧理论为基础,结合工业生产中的实际情况,应用Deform-3D有限元分析软件对T91轴类件的楔横轧成形过程进行数值模拟。通过对轧制过程中金属流动进行分析,阐述了楔入、展宽和精整3个阶段应变、温度和速度的变化规律,并在H500轧机上进行了实验,验证了模拟轧制的正确性。模拟和实验结果表明,楔横轧T91是可行的;轧后零件横截面上等效应变由外表面向心部先减小后增大,温度由外表面向心部逐渐增高,轧制过程中所能达到最低温度约880℃,最高约1185℃;纵截面上应变和温度均由轧件中间对称面向料头部分逐渐减小,轧制过程中所能达到的最低温度约1090℃,最高约1185℃。
Based on the cross wedge rolling theory, Deform-3D finite element analysis software was used to simulate the cross wedge rolling process of T91 shaft with the actual situation in industrial production. Through the analysis of the metal flow in the rolling process, the changing rules of strain, temperature and velocity in three stages of wedging, broadening and finishing are expounded. The experiments on the H500 rolling mill are carried out to verify the correctness of the simulation rolling. The simulation and experimental results show that cross wedge rolling T91 is feasible. The equivalent strain on the cross section of the part after rolling decreases first and then increases from the outer surface to the center, and the temperature gradually increases from the outer surface to the center. During the rolling process, Reaching a minimum temperature of about 880 ℃, a maximum of about 1185 ℃; longitudinal section of the strain and temperature are symmetrical from the middle of the workpiece toward the head part of the gradual reduction of the rolling process can reach the minimum temperature of about 1090 ℃, up to about 1185 ℃ .