定义角部尖化系数以定量描述无孔型轧制轧件角部尖化程度，通过实验分别研究了无孔型轧制时轧件角部尖化的影响因素及其变化规律。结果表明，无孔型轧制时轧件的角部将不可避免地趋于尖化，尖化程度与压下率及轧前轧件高宽比等因素有关；轧制方式对轧件角部尖化程度有影响，采用矩—矩轧制方式可避免轧件角部过于尖化。 The definition of corner apex coefficient is used to quantitatively describe the corner apex of non-pass rolling. The influencing factors and changing rules of corner apex of non-pass rolling are studied respectively through experiments. The results show that the non-perforated rolling of the corner will inevitably tend to be sharp, sharp degree and the reduction rate and rolling before the aspect ratio and other factors; rolling on the rolling of the corner A sharp degree of impact, the use of moment - moment rolling to avoid rolling the corner too sharp.