8011铝合金宽幅铸轧坯料裂边控制方法探讨  

Discussion on control method of crck edge of 8011 aluminum alloy wide casting and rolling billet

作　　者：曾虎 蔡朝阳 董能过 拓如印 Zeng Hu;Cai Chaoyang;Dong Nengguo;Tuo Ruyin(Luoyang Wanji Aluminum Titanium Alloy New Material Co.,Ltd.,Luoyang 471800,China)

机构地区：[1]洛阳万基铝钛合金新材料有限公司,洛阳471800

出　　处：《铝加工》2021年第6期41-44,共4页Aluminium Fabrication

摘　　要：针对在ϕ1200 mm×2300 mm大辊径宽幅铸轧机上生产宽度≥2000 mm 8011铸轧产品时工艺裂边不容易控制在8 mm以内的情况,对裂边产生的原因进行了分析,并提出了解决方案。在不改变温度、速度、轧制力、冷却强度、张力及化学成分等工艺参数的情况下,通过铸嘴内部分流改善、耳子倒角的预处理、生产过程中的在线调整及耳子材质的选择等手段,可以把板坯裂边控制在3~5 mm以内,进而降低下游工序的切边量,消除断带风险,提高成材率。When producing 8011 cast&rolled products with width of 2000mm or more on theϕ1200mm×2300mm large roll diameter and wide width casting and rolling mill,it is not easy to control the crack edge within 8mm,the cause of split edge is analyzed and the solution is put forward.Without changing the process parameters,for example,under the conditions of temperature,speed,rolling force,cooling strength,tension and chemical composition,the crack edge of the billet can be controlled within 3~5mm through improvement of internal shunt of the casting nozzle,pretreatment of ear chamfering,on-line adjustment in the production process,selection of ear materials,etc.,thus reducing the trimming amount of downstream processes,eliminating the risk of belt breakage and improving the yield.

关 键 词：铸轧 工艺裂边 铸嘴分流 耳子倒角 耳子材质 控制方法 

分 类 号：TG[金属学及工艺]