厚规格IF钢平整延伸率波动研究及实践  

Research and practice of elongation fluctuation of thickness IF steel in skin pass

作　　者：李靖[1] 任志超[1] 齐海峰[1] 任新意[1] 王少飞[1] 王飞[1] LI Jing;REN Zhi-chao;QI Hai-feng;REN Xin-yi;WANG Shao-fei;WANG Fei(Cold Roiling Department,Shougang Jingtang United Iron and Steel Co.,Ltd.,Tangshan 063000,Chin)

机构地区：[1]首钢京唐钢铁联合有限责任公司冷轧作业部

出　　处：《冶金自动化》2018年第4期73-76,共4页Metallurgical Industry Automation

摘　　要：厚规格（1．5mm）IF钢易出现延伸率波动超差问题，导致成品带钢冲压开裂和“橘皮”现象。本文以带钢延伸率为研究对象，分析了前述现象产生的原因，并建立有限元模型，重点分析张力对轧制力的影响。对于厚规格IF钢延伸率超差的问题，提出减小平整机前、后张力和降低运行最小轧制力的方法。以上两个针对性方法的实施，极大提高了厚规格IF钢延伸率的控制精度，实践表明效果良好。Thick gauge （ 1.5 mm） IF steels are prone to have problems of excessive elongation fluc-tuations, resulting in stamped cracking and ＂orange peel＂ on the strip. Regarding the strip elongationas the research object, this paper analyzes the causes of the aforementioned phenomena, and establi-shes a finite element model to highlight the analysis for the effect of tension on the rolling force. Forthe excessive elongation of IF steels with thick specification, this paper also reduces the entry and exittension for flattening machine and the minimum running rolling force to solve it. Due to the imple-mentation of the two targeted approach, the control accuracy of the thickness specifications IF steel e-longation is greatly increased, and the practice shows that these two methods are efficient.

关 键 词：厚带钢 IF钢 平整 延伸率 波动 有限元模型 

分 类 号：TG335[金属学及工艺—金属压力加工]