1.问题的提出过去,无缝钢管斜辊轧机一般使用固定式导板(见图1_b),这种固定式导板与毛管之间是100％的滑动摩擦,容易产生局部磨损和烧伤,直接影响导板的使用寿命和毛管的表面质量。因此近几年来许多钢管生产厂家改用大导盘(见图1-c),这已成为一种新的发展趋势。图1是三种不同形式导盘的示意图。虽然大导盘与固定式导板相比 1. PROBLEM PROBLEMS In the past, a seamless steel pipe skew rolling mill generally used a fixed guide plate (see FIG. 1 b). This fixed guide plate and the capillary tube had 100% sliding friction therebetween, which easily caused local wear and burns and directly affected the guide plate The service life and capillary surface quality. Therefore, in recent years, many steel pipe manufacturers to switch to a large disk (see Figure 1-c), which has become a new trend. Figure 1 is a schematic diagram of three different forms of guide. Although the large guide plate compared with the fixed