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賀德克液壓油濾芯10113R06BN 過濾精度
過濾精度，表明過濾器對各種不同尺寸顆粒的濾除能力，由過濾精度、過濾比、過濾效率等參數(shù)表示。
過濾精度指通過濾芯的zui大堅(jiān)硬球狀顆粒的尺寸（um）用試驗(yàn)方法測定，反映過濾材料的zui大孔徑尺寸。
過濾比β指對于同一尺寸的顆粒，在過濾器上游單位體積油液中的數(shù)量，與下游單位體積油液中的數(shù)量的比值。它能確切的反映過濾器對不同尺寸顆粒的過濾能力，已被標(biāo)準(zhǔn)化組織采用為評定過濾器過濾精度的性能指標(biāo)。
對于某一尺寸x的顆粒，過濾比β的表達(dá)式為：
上游油液中尺寸為x的顆粒的濃度比下游油液中尺寸為x的顆粒濃度
從中可以看到，β越大，過濾精度越高。當(dāng)過濾比β的數(shù)值達(dá)到75時(shí)，即被視為過濾器對某一尺寸x顆粒的過濾精度。
賀德克液壓油濾芯10113R06BN壓降特性
過濾器有阻力。系統(tǒng)中的油液，流經(jīng)過濾器必然出現(xiàn)壓力降。
濾芯和流量一定，濾芯的過濾精度越高，壓力降越大；流量一定，濾芯的過濾面積越大，壓力降越小；油液的粘度越大，壓力降越大。
濾芯所允許的壓力降，是濾芯不發(fā)生結(jié)構(gòu)性破壞所能夠承受的zui大壓力降。在高壓系統(tǒng)中穩(wěn)定工作時(shí)，濾芯承受的也僅僅是在那里油液的壓力降，而不是壓力。油液流經(jīng)過濾器的壓力降，大部分通過試驗(yàn)和經(jīng)驗(yàn)公式確定。
納垢容量
納垢容量，指過濾器的壓力降達(dá)到規(guī)定值之前，可以濾除并容納的顆粒物數(shù)量。這是反映過濾器可連續(xù)使用實(shí)際時(shí)間的重要指標(biāo)。納垢容量越大，更換或清洗的時(shí)間間隔越長。一般來說，濾芯尺寸大，即過濾面積大，納垢容量就成比例增加。這項(xiàng)指標(biāo)可以通過多次性能試驗(yàn)確定。