一、前言一初轧厂是一个三十年代建成的老厂,在1981年大修以前,初轧机由两台能力为2600千瓦的直流电动机驱动,电机转数为0-40-80转/分,额定电流为4400安培。由于主马达能力较小,为了减少轧制负荷,我们一直采用高温轧制方式来组织生产。1977年大修时更换了初轧机牌坊, I. INTRODUCTION The first rolling mill was built in the 1930s. Before the overhaul in 1981, the first rolling mill was driven by two DC motors with a capacity of 2600 kW. The motor revolutions were 0-40-80 rpm, The rated current is 4400 amps. Due to the small capacity of the main motor, in order to reduce the rolling load, we have been using high-temperature rolling to organize production. Replaced in 1977 when the mill rolling mill arch,