hydac滤芯的损耗过程，主要是污染物对滤芯的堵塞。污染物加载一个滤芯污染物加载过程就是堵塞滤芯通孔的过程。当滤芯被污染颗粒堵住时，能够通过液流的孔减少，要保证通过滤材的流量，压差就要增大。
在初始阶段，由于滤材上有许多孔，通过滤芯的压差增长很慢，堵塞的孔对整个压力损失影响很小。可是，当堵塞孔达到一个值时，堵塞非常迅速，在这一点，通过滤芯的压差上升非常快。一个滤芯滤材孔的数量、尺寸、形状和分布表明了为何一个滤芯比另一个滤芯寿命长的原因。www.kpdly.com
对于一给定厚度和过滤精度的滤材，滤纸比玻纤滤材的孔少，因此，滤纸材料的滤芯就比玻纤滤材的滤芯堵塞快。多层玻纤滤材的滤芯能够容纳更多的污染物，当液 流通过滤芯是，各个滤层滤除不同尺寸的颗粒，后层滤材中小的孔不会被大的颗粒堵塞，这些后层滤材的小孔仍然过滤流体中大量的小颗粒。
贺德克HYDAC液压滤芯
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