根据电磁场和磁流体力学理论,设计制造了以永磁体为工作介质,对金属液具有磁力驱动控制作用的双磁力驱动流体流动控制器.理论和实验研究结果表明:该控制器可实现对金属熔体无接触的磁力驱动搅拌;并可对弯月面形状和波动进行控制,当下磁力驱动器转速35r/s,上驱动器转速20r/s时,液面平直且波动较小,即液面达到似稳状态;该实验条件下Sn+3.5%Pb(质量分数,下同)合金连铸凝固组织为100%细等轴晶,连铸坯的初期凝固点降低,凝固坯壳变薄且均匀.
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