UBM STUDY ON DOUBLE-DIE IRONING PROCESS  

作　　者：Wang Liansheng Dong Liang Dong Shisheng Taiyuan Heavy Machinery InstituteHan Jingtao Qinghua University 

出　　处：《Chinese Journal of Mechanical Engineering》1994年第3期225-231,236,共17页中国机械工程学报（英文版）

摘　　要：The double-die ironing process is studied by means of UBM. The formulas of deformation load.contact stress on die surface, and tensile stress which acts on workpiece is obtained. Taking account of dirnensional accuracy, a new critical condition of limit reduction in cross section area is put forward for the flrst time. The test experiment indicats that results of theoretical analysis well accord with the actual conditions.[0]The double-die ironing process is studied by means of UBM. The formulas of deformation load.contact stress on die surface, and tensile stress which acts on workpiece is obtained. Taking account of dirnensional accuracy, a new critical condition of limit reduction in cross section area is put forward for the flrst time. The test experiment indicats that results of theoretical analysis well accord with the actual conditions.[0]

关 键 词：Upper boundary method Double-die ironing Forming limit Critical condition of limit strain 

分 类 号：TG37[金属学及工艺—金属压力加工]