聚变堆用CLAM钢管件冷推弯成形数值模拟及试验研究  

Finite element simulation and experimental study of push-bending processes for CLAM steel elbow

作　　者：郭训忠[1] 陶杰[1] 刘红兵[1] 李鸣[2] 胡立兵[2] 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京210016 [2]江苏华阳金属管件有限公司,江苏镇江212400

出　　处：《核科学与工程》2010年第2期115-121,共7页Nuclear Science and Engineering

基　　金：江苏省重大成果转化专项基金(BA2006067)

摘　　要：为解决CLAM钢的冷成形困难的问题,争取使其早日服役于核聚变环境,利用有限元数值模拟软件对CLAM钢管材的室温冷推弯过程进行了数值模拟,对影响弯头冷成形的工艺参数进行了优化以及对冷成形效果进行预报,由此确定了相对优化的工艺参数;并使用摩擦因子约为0.07的表面涂层对管坯进行润滑处理,结合有限元模拟结果进行了实际冷成形。研究表明,在厚度分布以及表面质量等方面,实验结果和模拟结果吻合,实际成形效果优良。因此,数值模拟的优化计算可以较好地指导聚变堆用难变形材料CLAM钢弯头的室温冷成形。The early application of CLAM steel in nuclear fusion project need to solve the difficult of fabrication of tube blank by cold forming processing.The push-bending processes for CLAM steel elbow at room temperature was simulated in this work by means of the numerical simulation software Dynaform.The optimization of process parameters and the prediction of cold forming effect were then studied,and the optimized process parameters were determined.Subsequently,the tube blank was coated by the lubricating agent with friction factor of 0.07.Then practical forming was carried out according to the optimal process parameters.The investigation obviously indicated that simulation results agreed well with the experiment in thickness distribution and surface quality.Therefore,it can be concluded through the very good results of the experiments that the optimization calculation of FE simulation can guide the practical forming of CLAM steel tube blank used in nuclear fusion project in the future.

关 键 词：CLAM钢 弯头 冷推弯 数值模拟 

分 类 号：TL64[核科学技术—核技术及应用]