高强度内六角螺栓的成形破裂研究  

An Investigation on Forming Fracture of the High Strength Inner Hexagonal Bolt

作　　者：周士能[1] 邱文婷[1] 陈志明[1] 俞彦勤[1] 

机构地区：[1]华中理工大学机械工程二系

出　　处：《华中理工大学学报》1991年第A03期83-87,共5页Journal of Huazhong University of Science and Technology

摘　　要：本文分析了高强度内六角螺栓的变形模式,提出了角部金属流动的应变表达式,并通过35CrMoA等高强度材料的实验研究,导出了材料破裂极限,其研究结果可以指导高强度多边形型腔零件和轴对称零件的冷锻生产.The deformation of matel of the high strength inner hexagonal bolts are analysed. An expression for the strain of metal flow around the corner of an ianer hexagonal bolt is proposed. The fracture limit for materials has been derived after tests on 35CrMoA and other materials. The results are useful to cold forging production of axis symmetrical and polygonal cavity parts.

关 键 词：螺栓 冷锻 延性破裂 金属流动 

分 类 号：TG314[金属学及工艺—金属压力加工]