偏心螺栓多工步冷锻过程中温度场仿真预测  

Prediction of the Temperature Field in the Multi-step Cold Forging of a Camber Bolt

作　　者：金城旭[1] 任靖日[1] 赵海龙 

机构地区：[1]延边大学工学院机械工程系,延吉133002 [2]韩国忠北大学工学院精密机械科

出　　处：《机械科学与技术》2014年第5期702-705,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51265050)资助

摘　　要：采用热力耦合有限元方法计算了AISI4140钢偏心螺栓在多工步冷锻造过程中的实际温度。根据实测数据确定了该仿真过程中机械能转化热能的系数,对偏心螺栓的整个冷锻过程中的温度场做了仿真预测,分析了冲头速度对实际温度、载荷的影响。分析得出在给定的冲头速度范围内锻件温度随冲头速度呈线性增加,载荷因温度的关系随冲头速度有所下降,但后来无明显变化。The temperature filed in the multi-step cold forging of a camber bolt was predicted by using finite element method coupling heat. Firstly,the mechanical energy conversion rate was determined according to the practice data,and the temperature filed in the forging process of a camber bolt was analyzed. Furthermore,the effect of the punch speed on the temperature and the load was also studied. Finally,the experimental results was presented for the correctness of the present method. As a result,the present method was reliable and analyzed that the temperature was approximately linear increase within the given punch speed,while the load decrease and then nearly change little. It provides an important reference for productivity in industry.

关 键 词：偏心螺栓 多工步冷锻 温度场 热力耦合有限元方法 

分 类 号：TB24[一般工业技术—工程设计测绘]