影响冷轧边部减薄的因素  

Effect of Rolling Parameters on Edge-Drop in Cold Rolling

作　　者：常安[1] 邸洪双[1] 白金兰[1] 佟强[1] 阳代军[2] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004 [2]首钢技术研究院,北京100041

出　　处：《钢铁》2007年第10期51-55,59,共6页Iron and Steel

基　　金：教育部博士点基金资助项目(20050145021)

摘　　要：边部减薄是带钢重要的断面质量指标,直接影响到边部切损的大小,与成材率有密切的关系。以六辊冷轧机为对象,采用影响函数法建立轧辊的弹性变形解析模型,分析了带钢入口厚度、压下率、变形抗力、前后张力、工作辊与中间辊的正负弯辊以及工作辊横移等因素对边部减薄的影响规律。研究结果表明,带钢入口厚度、压下率和变形抗力的变化对出口带钢横向厚度分布的影响结果相似,即随其数值的增大,中心板凸度Cc和边降Ce都随之增大。正弯辊力会减小Cc和Ce,工作辊横移会大大改善边部减薄,具体的横移量要根据不同品种、不同宽度以及不同轧制工艺来确定,而不能仅仅通过工作辊长度以及带材宽度来设计工作辊横移位置。Edge-drop is an important quality evaluating index for cross-section, which directly affects the size of edge cropping and the metal yield. An analytical model of elastic deformation of the rolls based on the influence function method was developed to simulate the rolling process on 6-high single cold mill focusing on the effects of rolling parameters such as entry thickness, reduction rate, resistance of deformation, forward pull and backward tension, bending force of work roll and intermediate roll as well as work roll shift on edge-drop. The results showed that the factors of entry thickness, reduction and resistance of deformation have same effect on the distribution of exit thickness along the strip width direction, that means Cc （central crown） and Ce （edge-drop） increase with the increase of these factors. The positive bending force can reduce Cc and Ce, while work roll shift improves the edge-drop control,depending on steel grade,strip width and rolling technology. Thus the work roll shift can not be set by length of work roll and strip width only.

关 键 词：边部减薄 冷轧机 影响函数法 工作辊横移 轧辊弹性变形 

分 类 号：TG335.12[金属学及工艺—金属压力加工]