热轧带钢生产工艺及常见质量问题探讨

Production Process and Common Quality Problems of Hot Rolled Strip

热轧带钢产品主要的质量指标包括表面质量、形状与尺寸精度、力学性能等3个方面。随着自动化控制技术广泛应用于热轧生产线,生产线对于带钢产品板形质量的控制已非常精确,产品的各项质量指标得到了很大保证。邯钢西区2,250mm热轧生产线年设计生产能力为460万t,全线采用自动化控制。在设备投入生产使用过程中,由于工艺和控制系统等存在的问题,产品外形尺寸等方面曾出现过一些质量问题,引起了客户的一些质量投诉和异议赔偿。本文对热轧生产工艺进行了探讨,对热轧生产中存在的一些质量问题和解决措施进行分析。

The main quality indicators of hot rolled strip products include surface quality,shape and size accuracy,mechanical properties of these three aspects.With the wide application of automatic control technology in hot rolling production line,the strip shape quality control has been very accurate,and the product quality index has been guaranteed.The annual design production capacity of 2,250mm hot rolling line in West District of Handan Iron and Steel Co.is 4.6 million tons,and the whole line adopts automatic control.During the process of the equipment put into production,some quality problems have occurred in the aspects of process and control system,shape and size of the products,which have caused some quality complaints and objection compensation from customers.In this paper,the hot rolling process is discussed,and some quality problems and solving measures in hot rolling are analyzed.