DBW52BP2-3X/315XYU6EW110N9K4
DBW52BP2-3X/315XYU6EW110N9K4
DBW52BP2-3X/315XYU6EW110N9K4
DBW52BP2-3X/315XYU6EW110N9K4
滑阀的液压卡紧现象不仅在换向阀中有，其他的液压阀也普遍存在，在高压系统中更为突出，特别是滑阀的停留时间越长，液压卡紧力越大，以致造成移动滑阀的推力（如电磁铁推力）不能克服卡紧阻力，使滑阀不能复位。
引起液压卡紧的原因，有的是由于脏物进入缝隙而使阀芯移动困难，有的是由于缝隙过小在油温升高时阀芯膨胀而卡死，但是主要原因是来自滑阀副几何形状误差和同心度变化所引起的径向不平衡液压力。为了减小径向不平衡力，应严格控制阀芯和阀孔的制造精度，在装配时，尽可能使其成为顺锥形式，另一方面在阀芯上开环形均压槽，也可以大大减小径向不平衡力
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