镁合金板带铸轧-等温轧制关键技术研究  

Study on the key technology of cast rolling-isothermal rolling of magnesium alloy plate and strip

作　　者：马立峰[1] 雷军义 谭劲峰 马宝平 贾伟涛[1] MA Li-feng;LEI Jun-yi;TAN Jin-feng;MA Bao-ping;JIA Wei-tao(Engineering Research Center Heavy Machinery Ministry of Education,Taiyuan University of Science and Technology,Taiyuan 030024,China;CHINALCO Luoyang Copper Co.,Ltd.,Luoyang 471000,China)

机构地区：[1]太原科技大学重型机械教育部工程研究中心,山西太原030024 [2]中铝洛阳铜加工有限公司,河南洛阳471000

出　　处：《重型机械》2020年第5期36-41,共6页Heavy Machinery

基　　金：国家自然科学基金(U1610253,U1910213);山西省青年科技研究基金(201901D211290);山西省高等学校科技创新项目(2019L0614);太原科技大学科研启动基金(20192002);山西省来晋工作优秀博士奖励资金(20202008)。

摘　　要：针对镁合金连续铸轧开坯轧制技术存在的瓶颈问题,通过设计新型前箱铅塞控流装置、铸辊温度分区可调装置和本机倾角可调的新型镁合金铸轧机。研究了铸轧镁合金板带轧制高精度自动控制理论,建立了镁合金轧制专用弯辊模型、张力控制模型、轧制力模型、液压AGC控制模型、轧辊与板带温度控制模型,开发了镁合金薄板/带炉卷等温轧制工艺新方法及相应的装备技术。有效克服了镁合金板材微裂纹缺陷、晶粒细化、织构类型转变及基面织构弱化不足的问题。这对提高镁合金板材性能和质量,降低成本,提高生产率,节约能源,减少排放,具有重要的理论意义和实用价值。Aiming at the bottleneck problem of magnesium alloy continuous casting and blooming rolling technology,a new type of front box lead plug flow control device,a casting roll temperature zone adjustable device and a new type of magnesium alloy casting and rolling mill with adjustable inclination angle of the machine are designed.Cast-rolling magnesium alloy strip rolling high-precision automatic control theory has been studied,magnesium alloy rolling special bending roll model,tension control model,rolling force model,hydraulic AGC control model,roll and strip temperature control model have been established.The new method of magnesium alloy sheet/strip isothermal rolling process and the corresponding equipment technology were developed.It effectively overcomes the problems of micro-crack defects,grain refinement,texture type transformation and insufficient basal texture weakening of magnesium alloy sheets.This has important theoretical significance and practical value for improving the performance and quality of cast-rolled magnesium alloy sheets,reducing costs,increasing productivity,saving energy,and reducing emissions.

关 键 词：镁合金 铸轧机 数学模型 轧制工艺 

分 类 号：TG331[金属学及工艺—金属压力加工]