曾获全国科学大会奖的我国自行设计、自己制造的第一台连续炉焊机组所使用的成型轧辊,是重要的成型工具。它与轧机传动轴装配组成十四架连续轧管机组。因轧机出口速度高达3.2m/s,同时轧管温度亦达1320℃,故要求成型轧辊工作层应具有耐热、耐磨、硬度均匀一致及较深的白口层;而辊芯又应具有良好的加工特性,这是用单一金属材质铸造难以实 Formed the first roll of continuous welding units used by our own design, China has won the National Science Conference Award forming roll, is an important molding tool. It is assembled with the mill drive shaft composed of 14 continuous tube mill. Due to the mill exit speed of up to 3.2m / s, while the rolling pipe temperature also reached 1320 ℃, it is required forming the working layer of the roll should have a heat-resistant, wear-resistant, uniform hardness and deep white stratum; and the core should have Good processing characteristics, which is difficult to cast with a single metal material