摘要
利用有限元软件对聚变堆用CLAM钢三通管件的内高压整体成形工艺进行了数值模拟,研究了压力加载路径及摩擦条件关键工艺参数对支管高度以及壁厚分布的影响,从而确定了CLAM钢三通管件内高压成形的优化工艺参数组合。使用满足优化摩擦系数的表面涂层对CLAM钢管坯进行润滑处理,并根据优化结果对CLAM钢管材进行了内高压成形试验。实际成形的三通管件在几何尺寸及厚度分布方面,实验结果和模拟结果吻合。研究结果表明,通过有限元数值模拟可准确预测难变形材料CLAM钢三通的复杂冷成形,并确定工艺参数;通过确定的工艺参数可制备出几何尺寸及厚度分布均满足要求的高质量聚变堆用三通管件。
The integral hydroforming process to prepare CLAM T-shapes for fusion applications was evaluated by means of numerical simulation.The paper firstly investigated the effect of different paths on the protrusion height and distribution of thickness thinning rate of T-shapes.Then,it discussed that the friction coefficient between die and tube blank played an important role in manufacturing high quality T-shapes.Subsequently,the practical hydroforming was performed based on the simulation results with the aid of special lubrication coatings with friction coefficient 0.07.It is obviously indi- cated that the simulation results agree well with the experimental ones in geometry size and wall thickness distribution.The results indicate that the numerical simulation guides the practical hydroforming of CLAM tube effectively and determines the actual cold forming process parameters rapidly.The sound CLAM T-shapes with proper geometry size and thickness distribution can be obtained by the optimal hydroforming process.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2010年第10期1217-1222,共6页
Atomic Energy Science and Technology
基金
江苏省重大成果转化专项基金资助项目(BA2006067)
江苏省博士生创新基金资助项目(CX09B_077Z)
