锆合金薄壁管三点弯校直中的截面扁化  

The cross section flattening of zirconium alloys thin walled pipe in three points straightening

作　　者：钟华勇[1] 翟华[1] 李玉宝[2] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009 [2]中电集团第十四研究所,南京210039

出　　处：《塑性工程学报》2011年第4期97-100,共4页Journal of Plasticity Engineering

基　　金：安徽省自然科学基金资助项目(090414155);安徽省科技攻关资助项目(06012019A)

摘　　要：锆合金薄壁管类零件是核电站中重要零件,校直中会出现截面扁化现象。应用弹塑性原理研究锆合金薄壁管校直变形中的应力和应变,在设定平面位移函数为三角级数条件下,建立了锆合金薄壁管类零件扁化率计算公式,对直径72mm、壁厚2mm、支点距离600mm的锆合金管进行校直实验,在11000N载荷下截面发生扁化变形,结果表明,截面扁化率计算公式对锆合金管校直有一定指导意义。Zirconium alloys thin walled pipes with cross section being flattened in three points straightening are important parts in nuclear power station.The stress and strain in straightening deformation had been analyzed based on elastic-plastic theory,and the flatten rate computation formula was established assuming the plane displacement function being triangle series.The flattening experiments were performed for zirconium alloys thin walled pipes with diameter 72mm,wall thickness 2mm and support distance 600mm.The flattening of the cross section would take place when the load reaches 11000N.The computation formula could make help for further research in zirconium alloys thin walled pipes straightening technology.

关 键 词：锆合金 薄壁管 扁化率 

分 类 号：TH123[机械工程—机械设计及理论]