1.前言在轧制 H 型钢时,为保证产品质量,必需设置轧边端孔型,轧制经万能孔型加工后的轧件边端。H 形件在轧边端孔型中的宽展一边厚变化是决定轧制规程设计和产品尺寸的重要参数,研究其变化规律,对于 H 型钢生产有较大意义。由于 H 形件属复杂断面型材,其轧边端的过程为典型的三维轧制 1. Introduction In the rolling of H-beam, in order to ensure product quality, the need to set the rolling edge hole type, rolling through the universal hole after the rolling edge. The wide variation of widening and one side of H-shaped part in the pass hole of rolling edge is an important parameter that determines the design of rolling schedule and the size of product. It is of great significance to study the variation of H-shaped steel production. As the H-shaped section is a complex section profile, the rolling edge of the process is a typical three-dimensional rolling