一、引言 在轧钢工业生产中,轧制薄板与矽钢片的轧辊折断现象特别严重。这不但严重地影响了生产的正常进行,同时因轧辊价格较高,造成了财产上的巨大损失。根据现场观察,轧辊折断的位置,绝大部分在辊身中部。假若单纯考虑由轧制压力在轧辊中所引起的应力,则轧辊折断的部位应在辊颈处。所以轧辊的折断显然与轧辊在高温下工作的特点有关。本文研究的 I. INTRODUCTION In the industrial production of rolled steel, the roll breaking phenomenon of rolled sheet and silicon steel sheet is particularly serious. This not only seriously affected the normal production, but also because of the higher roll prices, resulting in huge losses of property. According to the site observation, the roll break position, most of the middle of the barrel. If we simply consider the stress caused by the rolling pressure in the roll, the roll off the site should be at the roll neck. Therefore, the roll break is clearly related to the characteristics of the work roll at high temperatures. This article studies