武汉盛美特液压设备有限公司

作滞后大，灵敏度降低，增加了动态压力超调量，且易堵塞、工艺性也不好
C1——主阀口的流量系数（无因次），图2结构可取C1=0.78
ρ―油液密度，取850－900kg/m3
Px―卸荷压力，通常取Px=(0.2～0.5)MPa
6、主阀芯导向长度l
增大主阀芯导向长度l，有利主阀芯工作稳定，减少啸叫和压力振摆，但过大，结构尺寸增加.建议l1.2D
7、导阀芯半锥
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