目前,在汽车工业中,明显的趋势是减轻结构总重和采用轻型及高强度材料,无论是采用这两种手段还是采用塑料,均可大大地节约燃料。 在多辊冷轧机方面,采用森吉米尔辊系已有三十多年成功的经验,并且开创了采用小直径工作辊比较经济地轧制带材的新局面。采用森吉米尔辊系可减少两方面的费用。对现有的老四辊轧机进行改造,所花费用只有新造轧机的几分之一,即可充分发挥老轧机的使用性能。如果采用全新的多辊轧机结构,则在 At present, the obvious trend in the automotive industry is to reduce the total weight of the structure and the use of lightweight and high-strength materials, both in terms of fuel economy and in terms of both plastic and plastics. In the case of multi-roll cold mills, the use of the Sendzimir roller system has been successful for more than three decades and has opened the door to more economical rolling of the strip with smaller diameter work rolls. The use of Sendzimir roller system can reduce the cost of both. The transformation of the existing four-high rolling mill, which takes only a fraction of that of a new mill, can give full play to the serviceability of the old mill. If using a new multi-roll mill structure, then