NORD Drivesystems geared motors for rolling mills

摘要

In recent years, the German drive technology manufacturer NORD Drivesystems has been very active in the steel industry in China and India. NORD has supplied 2,500 geared motors to the Shanghai Baosteel Group Corporation for a heavy plate mill in Pudong which produces, amongst others, sheets for the shipbuilding industry.Roller table drives are essential parts of a steel mill's equipment. They need to be fully reliable, or else entire production lines threaten to stand still, which may result in irreparable damages to the equipment if freshly cast goods stay on the roller tables for too long. The drives must withstand harsh environments, extremely irregular operating modes, heavy loads, and maximum temperatures. Roller drives must deliver high torques. They must be able to instantly reverse the rolling direction and feature variable speed adjustment. This entails high electrical, mechanical, and thermal stress on the drives.