研究了回转体锻件闭式模锻时的金属流动特点及变形区形状,利用工程计算法导出了圆柱体闭式镦粗变形力计算公式,并在分析研究各种主要因素影响的基础上,提出了计算各类回转体锻件闭式模锻变形区尺寸及变形力的通用公式。 The characteristics of metal flow and the shape of deformation zone during closed die forging of swivel body were studied. The formula of the closed upsetting deformation force of cylinder was deduced by engineering calculation method. Based on the analysis of the influence of various main factors, A general formula for calculating the size and deformation force of the closed die forging deformation zone for various types of rotating bodies is presented.