锻件结构设计准则（十三）杨文彬（南京化工大学２１０００９）１引言锻件是指靠挤压成形的构件，它利用金属在高温下易变形的特点通过锤打、挤压、冲击等手段使构件变成所希望的形状。锻造可分为自由锻造和模型锻造，前者适用于结构简单、批量小的构件；后者适用于结构... Forging structural design guidelines (13)  Yang Wenbin (Nanjing University of Chemical Technology 210009) 1 Introduction Forging refers to the extrusion forming components, which use the characteristics of metal deformation at high temperatures by hammering, extrusion, impact and other means The member becomes the desired shape. Forging can be divided into free forging and forging models, the former for simple structure, small quantities of components; the latter applies to the structure ...