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介绍了YF-65伺服阀用马蹄形AlNiCo磁钢以及磁场热处理、回火等工艺对磁性能的影响。最佳磁场热处理和回火后试样性能为：Br=1350mT；Hc=62．1kA／m;BHmax=54．1kJ／m3；器件间隙磁通密度达到225mT～235mT。
The effect of the magnetic properties of the horseshoe-shaped AlNiCo magnets for YF-65 servo valve and the heat treatment and tempering of the magnetic field are introduced. The best magnetic field heat treatment and tempering after the sample performance: Br = 1350mT; Hc = 62.1kA / m; BHmax = 54.1kJ / m3; device gap flux density reaches 225mT ~ 235mT.