厚规格热轧带钢卷取温度控制精度研究  

Research on the accuracy of coiling temperature control for thick gauge hot rolled strip

作　　者：霍建生 秦红波[1] 郑立康 吴玉霄 张欣觌 HUO Jiansheng;QIN Hongbo;ZHENG Likang;WU Yuxiao;ZHANG Xindi(Tangshan Iron and Steel Co.,Ltd.,Tangshan 063000,China;Tangshan Huitang IoT Technology Co.,Ltd.,Tangshan 063000,China)

机构地区：[1]唐山钢铁集团有限责任公司,河北唐山063000 [2]唐山惠唐物联科技有限责任公司,河北唐山063000

出　　处：《轧钢》2024年第3期107-112,共6页Steel Rolling

基　　金：河北省“三三三人才工程”项目(C20221046)。

摘　　要：在带钢热连轧生产过程中,卷取温度是非常关键的过程控制指标之一,其控制精度直接影响热轧带卷组织均匀性与力学性能稳定性。为了解决厚规格带钢卷取温度命中率控制精度偏低的问题,将轧后换热方式、终轧温度控制模型与生产大数据有机结合并进行系统性分析。结果表明:穿带速度设定与干头模式下的超快冷压力控制是厚规格带钢卷取温度超差的主要影响因素。为此,优化了精轧入口温度采集方法以提高穿带速度设定准确性,同时开发了干头模式下的超快冷压力控制程序,提高了超快冷流量控制精度,进而提高了卷取温度控制精度。通过以上优化措施,厚规格(厚度h>13 mm)带钢卷取温度命中率提升了7.24%,取得了较好的效果。In the production process of hot strip rolling,the coiling temperature is one of the key process control indicators,and its control accuracy will directly affect the uniformity of the microstructure and the stability of mechanical properties of hot rolled strip coil.In order to solve the problem of low accuracy in controlling the coiling temperature hit rate of thick gauge strip,the heat transfer method after rolling,finishing rolling temperature control model,and production big data were organically combined and systematically analyzed.The results showed that the setting of threading speed and the control of ultra-fast cooling pressure under dry head mode were the main influencing factors for the coiling temperature deviation of thick gauge strip.Therefore,the method for collecting the inlet temperature of finishing rolling was optimized to improve the accuracy of threading speed setting.At the same time,an ultra-fast cooling pressure control program was developed under dry head mode,which improved the accuracy of ultra-fast cooling flow control and thus improved the accuracy of coiling temperature control.Through the above optimization measures,the coiling temperature hit rate of thick gauge(thicknees h>13 mm)strip has been increased by 7.24%,achieving good results.

关 键 词：卷取温度 厚规格热轧带钢 精轧入口温度 穿带速度 干头控制模式 超快冷压力控制 

分 类 号：TG335.56[金属学及工艺—金属压力加工]