热轧窄带轧辊磨损与硬化层深度预报技术研究

Research on Prediction Technology for Wear and Edge Hardening of Hot Rolled Narrow Strip Rolls

在热轧窄带生产过程中,为了追求高效生产,精轧机组满负荷运转导致四辊轧机轧辊损耗较快、轧辊边部发生局部硬化。轧辊的这种异常状态一方面使得轧辊辊型和硬度无法精准预测,对辊缝计算及产品质量的稳定性造成不良影响;另一方面轧辊的异常损耗也使得生产成本增加。因此,针对某钢厂热轧窄带钢产品生产过程中轧辊磨损与边部硬化无法精准预测引起的辊耗问题,建立精轧机组轧辊磨损与边部硬化数学模型,结合现场实际开发相应的轧辊磨损与边部硬化技术,为现场轧辊使用工艺提供理论依据,指导轧辊换辊周期及磨辊工艺。

In the process of hot rolling narrow strip production,in order to pursue efficient production,the full load operation of the finishing mill unit leads to faster roll loss and localized hardening of the roll edges in the four roll rolling mill.The abnormal state of the rolling mill makes it difficult to accurately predict the roll shape and hardness,which has a negative impact on the calculation of roll gaps and the stability of product quality.On the other hand,the abnormal loss of rollers also increases production costs.Therefore,in response to the problem of roll consumption caused by the inability to accurately predict roll wear and edge hardening during the production process of hot-rolled narrow strip steel products in a certain steel plant,a mathematical model for roll wear and edge hardening in a precision rolling unit is established.Based on the actual situation on site,corresponding roll wear and edge hardening technologies are developed to provide theoretical basis for the use of on-site rolls,guide the roll change cycle and grinding process.