磁性材料及器件第54卷第2期2023年3月•48•Nd-Fe-B片铸连续恒定浇注流量数学模型分析及工程实现杨阳，陈伯乐，王杰，赵导文(中国电子科技集团公司第九研究所，四川绵阳621000)摘要：针对烧结Nd-Fe-B磁体生产过程中速凝(片铸)浇注流量较难控制的问题，建立合金熔炼坩埚连续恒定浇注流量数学模型，用工程软件计算并绘制倾角(θ)-流量(q)、时间(t)-速度(v)等函数曲线；分析函数曲线特征，发现倾转坩埚的几何形貌和状态变化是导致连续浇注流量不稳定的主要因素，在约60°与73.9°倾转角流量发生急剧变化。根据曲线特性和现场采集数据，制定短时间等角速度(即局部线性化)的恒定熔液流量控制策略，设计片铸炉的系统嵌入式间接模糊控制恒定浇注流量铸片子系统，工程化实现浇注过程液面无浪涌的连续平稳片铸，铸片厚度及其一致性均达到满意指标。关键词：Nd-Fe-B磁体；片铸；浇注流量；数学模型；模糊控制中图分类号：TM273;TQ018文献标识码：A文章编号：1001-3830(2023)02-0048-08DOI:10.19594/j.cnki.09.19701.2023.02.009著录格式：杨阳,陈伯乐,王杰,等.Nd-Fe-B片铸连续恒定浇注流量数学模型分析及工程实现[J].磁性材料及器件,2023,54(2):48-55.//YANGYang,CHENBo-le,WANGJie,etal.MathematicalmodelanalysisandengineeringrealizationaboutconstantrateofcontinuouspouringflowofstripcastingofNd-Fe-Bmagnet[J].JournalofMagneticMaterialsandDevices,2023,54(2):48-55.MathematicalmodelanalysisandengineeringrealizationaboutconstantrateofcontinuouspouringflowofstripcastingofNd-Fe-BmagnetYANGYang,CHENBo-le,WANGJie,ZHAODao-wenNinthInstitute,ChinaElectronicsTechnologyGroupCorporation,Mianyang621000,ChinaAbstract:FortheproblemthattherateofpouringflowisusuallyuncontrollableonNd-Fe-Bstripcasting,mathematicalmodel,whichisbasedonconstantrateofcruciblecontinuouspouringflowwithmoltenalloy,isestablished.Thefunctioncurvesabouttilt-angleθ-qandt-vhavebeendrawnbycomputerwithengineeringsoftware.Findthegeometryandstateoftiltedcruciblearethemainreasonthatcausesunstablecontinuouspouringflowafteranalyzingthefeaturesofcurve.60°and73.9°tiltangleareremarkable.Accordingtothecurvefeaturesandfieldcollecteddata,developthecontrolstrategyfollowingtherulesofequalangularvelocityinashorttime(i.e.localli...
