清洁度原则(最新)油液的干净度:油液的干净度----就是油液污染程度的定量描述
油液的干净度的评定办法油液中颗粒尺寸的分布:对数座标以 对数/线性 log/log2干净度等级表达法:NAS1638、SAE749D、ISO4406NAS1638 油液干净度等级(100ml 液压油液中颗粒数)污染度等级颗粒尺寸范畴(μm)5-1515-2525-5050-100>1000012522410025044820150089163121000178326133566311244000712126224580001425253458616000285050690167357001012180328640001140020253606491280002280040507201281025600045600810014402561151912001620028805121210240001824003240057601024SAE749D 油液干净度等级(计数法)液压油污染等级试行原则(每 100ml)尺寸范畴污染等级μm01234567-102
5 - 5待定5 - 102700460097002400038700012800010 - 256701340208053601070021400425 - 5093210380780151031306500待定50 - 1001628561102254301000>10013511214192* 电力行业原则 DL/T571-95 (SAE749D 油液干净度等级) ISO 油液干净度等级颗粒数/mlRR5/15不不大于不大于(等于)浓度等级数例 1:不不大于 5 微米的颗粒浓度80,000160,00024为 400 颗/ml
40,00080,00023 不不大于 15 微米的颗粒浓度20,00040,00022为 65 颗/ml