摘要
本文通过实验室实验及生产实验建立了锻件的瞬时温度场的数学方程式。应用固体热传导原理,采用数理方程有限差分法,建立了加热工件瞬时温度场热传导方程式。文审以φ200、φ60 mm 两种中小型工件为例,用热传导方程式作出程序,计算出两种工件随时间延长,由工件表面到中心任一点瞬时温度的变化值。理论计算值曲线与实验测定值曲线比较是一致的。加热工件瞬时温度场的平均温度的理论值位置与实验值位置是相同的。加热工件中心平均温度与其表面温度的关系式基本相符。
In this paper,a mathematic equation was established to determine transient temperature field of forging part by experiment on the laboratory and the plant.The equations of heat transfer for the transient temperature field of heating part were established on the basis of the theory of heat transfer in solid by means of the finite difference of mathematical-physical equation. The programs of computation were designed by equations of heat transfer that were used to test temperatures of one medium and one small heating parts with sizes φ200 mm and φ60 mm.The temperatures were detected at any point between surface and center,then the values of transient tempera- ture fields changed with time.The detected temperature values and technical curves were consistent with the theoretically predicted values and curves.The location of average value for transient temperature field of heating part was that the detected temperature values were consistent with theoretically temperature values.The relation between center and surface of average temperature of heating part was consistent in the main.
出处
《交通科学与工程》
1990年第3期29-40,共12页
Journal of Transport Science and Engineering
关键词
瞬时温度场
锻件
加热工件
热传导
有限差分法
transient temperature field
forging part
heating part
heat transfer
finite defference
