1.前言轧制窗钢是我国60年代以来发展的新产品,随着国民经济的发展对其数量和品种的要求愈来愈多。由于该产品具有以下特点: ①断面复杂,除07、09和13型窗钢外都无对称轴。腿长多为不等,而且相差较大,个别相差5倍以上,所以轧制过程中不均匀变形较大; 1. Introduction Rolling Window Steel is a new product developed in our country since the 1960s. With the development of the national economy, the demand for its quantity and variety is increasing. As the product has the following characteristics: ① cross-section complex, except for the 07,09 and 13-type window steel outside the axis of symmetry. Leg length and many more, but a big difference, a difference of more than 5 times, so the rolling process of uneven deformation larger;