热轧带钢平整机工作辊的不均匀磨损及其降低措施

Uneven wear of work roll and its reduction measurement on hot strip temper mill

以2 250 mm热轧带钢平整机为对象,对工作辊的不均匀磨损进行研究。通过测量发现其工作辊磨损具有"W"形的特征,并分析该磨损与热轧和冷轧平整磨损的异同。结合其磨损特点,构造磨损模式函数,采用遗传算法确定模型参数,得到可满足工程要求的磨损模型。利用该模型计算分析不同窜辊策略时工作辊的磨损情况,针对原策略的不足提出新的窜辊策略并进行工业试验。研究结果表明:不均匀磨损程度减小,工作辊服役期延长。

Taking 2 250 mm hot strip temper mill as a subject,uneven wear of work roll was studied.The difference between wear of hot strip mill and cold strip mill and ＂W＂ shape wear of work roll of hot strip temper mill were pointed out after measurement and analysis.Integrating its wear characteristics,the function of wear model,whose parameters were confirmed by using genetic algorithm,was constructed.The wear model which meets the requirements of project was obtained.Using the model,the wear of work roll under the condition of different shifting strategies was simulated.Simulation results show the deficiency of original shifting strategy.Based on the results,new shifting strategy is proposed and applied in industrial test,and the effects are as follows： non uniform wear of work roll is improved and service period of work roll is prolonged.