The paper presents the working principle, performances and system structure of the monitoring system for the current and rotative velocity of stretch reducing mill at Baogang Steel Tube Plant.

• 针对宝钢钢管厂张力减径机在生产中的问题，研制了在线监测减径机电流和转速微机系统，本文介绍系统的工作原理、性能、结构及其在应用中取得的满意效果。