介绍了一种用于搅拌金属复合熔体的磁力搅拌法 ,洛仑兹力是由高速旋转的永磁体磁场产生的 .分析了NbFeB永磁体在空间的磁感应强度分布情况 .研究表明 :磁感应强度的大小在空间分布类似于鞍形 ,在高度方向上衰减很快 ;磁场转速对磁力搅拌效果影响明显 ,涡旋磁场与金属熔体间的偏置度为 2 5mm时 ,增强颗粒较易加入 ;用磁力搅拌法搅拌复合熔体具有力源与熔体无直接接触 ,对熔体无污染 ,磁场具有可设计性 ,设备和生产成本低等优点 A magnetic stirrer method for stirring metal composite melts is introduced. The Lorentz force is generated by the high-speed rotating permanent magnet. The magnetic induction intensity distribution of the NbFeB permanent magnet in space is analyzed. The results show that the magnetic induction intensity The size distribution in the space is similar to the saddle shape, and decays rapidly in the height direction. The effect of the magnetic field speed on the magnetic stirring effect is obvious. When the bias between the vortex magnetic field and the metal melt is 2 5 mm, the reinforced particles are easier to join; Magneto-stirring method Stirred composite melt with no direct contact with the source of the melt, no pollution to the melt, the magnetic field has a design, equipment and low production costs