Research and improvement of loop tension control in hot dip galvanizing line

In the production process of entrance loop in hot dip galvanizing unit of Panzhihua Steel Vanadium Company Limited,the loop tension occurred fluctuations,seriously affected the unit's operation and product quality.The loop tension control strategy are analyzed,and through adding gravity torque compensation for the strip loop,the loop car and the counter weight,and adding speed differential torque compensation for the tension roller by speed torque curve,loop tension fluctuation is decreased and meet the requirements for production process.