长轴类锻件锻造过程中的温度场研究  

A study on temperature field of long shaft forging during the forging process

作　　者：董志明[1] 张喜英[1] 骆城[1] 

机构地区：[1]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《中国机械》2015年第20期32-34,共3页Machine China

摘　　要：在长轴类锻件锻造过程中，掌握长轴类锻件的温度场尤其是锻件外表面的温度场是一项十分重要的内容，其直接影响着锻件的成型质量。本文结合非稳态热传导理论推导了轴类锻件的热传导方程，建立了轴类锻件的传热模型，并应用分离变量法和贝塞尔函数对轴类锻件的传热模型进行了求解，由求得的锻件温度场分析了锻造过程中锻件外表面温度场的变化情况，给出了锻件外表面的温度场分布规律。根据锻件外表面的温度场分布规律，可对轴类锻件的内部状态进行分析。最后通过仿真实验验证了建立模型的可行性，为锻造过程中长轴类锻件内部缺陷的预判提供了理论指导。In order to improve the mechanics and physical performance, the temperature field of long shaft forging is adopted. It is very important to control the interior temperature field of long shaft forging, which may directly influence on the quality of long shaft forging. Based on the unsteady heat conduction theory, the heat conduction equation of shaft forgings is deduced in this paper. The heat transfer model of shaft forgings is established. The method of separation of variables and Bessel function are adopted to solve the heat transfer model of shaft forgings. And the obtained shaft forging＇ s temperature field is analyzed. Then the surface temperature distribution of shaft forgings is obtained. According to the surface temperature distribution of the forgings, the internal state of the shaft forgings is analyzed. The feasibility of the model is verified by the experimental results. It also provides a theoretical guidance for anticipating internal defects of large shaft forging.

关 键 词：长轴类锻件 传热模型 分离变量法 温度场分布规律 

分 类 号：TG315.2[金属学及工艺—金属压力加工]