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.
出处
《核科学与工程》
CSCD
北大核心
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)
关键词
CLAM钢
弯头
冷推弯
数值模拟
CLAM steel
elbow
push-bending
numerical simulation
