DBW52BP2-3X/315XYU6EW110N9K4
DBW52BP2-3X/315XYU6EW110N9K4
DBW52BP2-3X/315XYU6EW110N9K4
DBW52BP2-3X/315XYU6EW110N9K4
滑閥的液壓卡緊現(xiàn)象不僅在換向閥中有，其他的液壓閥也普遍存在，在高壓系統(tǒng)中更為突出，特別是滑閥的停留時(shí)間越長，液壓卡緊力越大，以致造成移動(dòng)滑閥的推力（如電磁鐵推力）不能克服卡緊阻力，使滑閥不能復(fù)位。
引起液壓卡緊的原因，有的是由于臟物進(jìn)入縫隙而使閥芯移動(dòng)困難，有的是由于縫隙過小在油溫升高時(shí)閥芯膨脹而卡死，但是主要原因是來自滑閥副幾何形狀誤差和同心度變化所引起的徑向不平衡液壓力。為了減小徑向不平衡力，應(yīng)嚴(yán)格控制閥芯和閥孔的制造精度，在裝配時(shí)，盡可能使其成為順錐形式，另一方面在閥芯上開環(huán)形均壓槽，也可以大大減小徑向不平衡力
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