1180 MPa级超高强钢冷连轧过程的厚度综合控制技术  

Comprehensive Thickness Control Technology of 1180 MPa Grade Ultra-high Strength Steels in Cold Tandem Rolling

作　　者：张文军 王文奇 张晓东 林威 张燕东 白振华 ZHANG Wenjun;WANG Wenqi;ZHANG Xiaodong;LIN Wei;ZHANG Yandong;BAI Zhenhua(National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Yanshan University,Qinhuangdao,Hebei,066004;State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao,Hebei,066004;China National Heavy Machinery Research Institute Co.,Ltd.,Xi'an,710018)

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,秦皇岛066004 [2]燕山大学亚稳材料制备技术与科学国家重点实验室,秦皇岛066004 [3]中国重型机械研究院股份公司,西安710018

出　　处：《中国机械工程》2024年第2期347-353,370,共8页China Mechanical Engineering

基　　金：河北省高等学校科学技术研究项目(CXY2023012);河北省重大科技成果转化专项(22281001Z);辽宁省教育厅高等学校基本项目(LJKZZ20220040);河北省科学技术研究与发展计划(23280101Z);中央引导地方科技发展资金(236Z1024G)。

摘　　要：针对超高强钢在冷轧过程中厚度波动大以及带头带尾厚度超差的问题,首先根据金属秒流量模型建立了厚度超差预测模型与辊缝调节量预估模型;随后开发了轧制过程中的厚度控制系统,并进行了辊缝调节量优化;最后建立了带钢头尾轧制过程中的轧制速度与张力优化模型。以国内某冷连轧机组的第1机架为技术应用对象,选择两种典型的超高强钢进行生产测试,测试结果表明:超高强钢AR4146E1与DU6220A1的厚度超差长度分别从70.3 m、36.89 m下降到了16.85 m、16.33 m。To resolve the issues of thickness variation and thickness deviation at head and tail for ultra-high strength steels in continuous cold tandem rolling,a thickness deviation prediction model and a roll gap adjustment estimation model were established based on the metal mass flow equation firstly.In addition,a thickness control system was exploited,and optimal roll gap adjustment model was established.Finally,an optimization model for rolling speed and tension in the head and tail rolling processes of the strip steels was built.The first stand of continues cold tandem rolling unit was taken as the technical application objects to test the two typical ultra-high strength steels.The results demonstrate that the length of thickness deviation for the ultra-high strength steel AR4146E1 and DU6220A1 decreased from 70.3 m and 36.89 m to 16.85 m and 16.33 m respectively.

关 键 词：厚差 控制系统 辊缝 超高强钢 冷连轧 

分 类 号：TG335.56[金属学及工艺—金属压力加工]