【作者】 郭明海； 黄晓斌； 王黎晖； 鲍善勤； 高义民； 韩静涛；

【Author】 GUO Minghai~1,HUANG Xiaobin~1,WANG Lihui~1,BAO Shanqin~1,GAO Yimin~2,HAN Jingtao~3 (1.Beijing Changxing Kaida Composite Material Development Limited Company;2.Xi’an Jiaotong University; 3.Beijing Science and Technology University )

【机构】 北京长兴凯达复合材料科技发展有限公司； 西安交通大学； 北京科技大学；

【摘要】 本文运用有限元分析软件ANSYS对材质为21CrMo10的管坯,在不同工艺参数下的温度场和热应力场进行了分析。结合实际检验得出:出现轴向裂纹的原因在于涂层太薄、管坯横截面的温度梯度大于了8℃/mm。随着涂层厚度的减小、浇注温度的升高,厚壁管坯内壁的热应力有增加的趋势。进一步优化和确定了在特定情况下浇注合格管坯的涂层参数。更多还原

【Abstract】 The article analyzed the temperature field,thermal stress field of a rough pipe,named as 21CrMo10,under different technical parameters.The analysis were based on the simulation results from software ANSYS,and it was under the condition of considering the real fact of centrifugal casting and the simulation of coupling fluid flow to heat transfer,heat transfer to thermal stress together. The thesis concluded that the reason of axial crack was that the coats were very thin and the temperature grads of cross section exceeded 8°C/mm.Along with the diminution of the coats and the rising of pouring temperature,the heat stress of inner pipe wall would increase step by step. More optimized the parameter of coat at the point of casting eliqibility rough pipe.更多还原