Makina a servo mu hydraulic system ndi olondola kwambiri (chilolezo chachikulu ndi 3μm), chomwe chimatsekedwa mosavuta ndi tinthu tating'onoting'ono tamafuta, zomwe zimayambitsa kulephera kuwongolera.Tizigawo ta mafuta opaka mafuta amathandizira kuvala kwa zisindikizo mu dongosolo, potero kuchepetsa kudalirika ndi moyo wautumiki wa zida.Choncho, m'pofunika kuyeza ukhondo wa zinthu zamafuta m'njira yolondola, yomwe imatchedwa "ukhondo".
Pakali pano, ISO 4406 ndi NAS 1638 amagwiritsidwa ntchito kwambiri kusonyeza ukhondo wa mafuta.Pali kulumikizana kwina pakati pa miyezo iwiriyi.China ofanana anatengera ISO 4406-1999 muyezo, anapanga "hydraulic kufala mafuta olimba tinthu kuipitsidwa mlingo code" GB/T 14039-2002 dziko muyezo.
Muyezo wa ISO 4406-1999 ndikuwunika kuchuluka kwa tinthu > 4μm, > 6μm, > 14μm mu 100ml yamafuta, Muyezo wa ISO 4406 waukhondo udaperekedwa ndi International Organisation for Standardization mu 1991 potengera ma code oyipitsa (ukhondo) .
ISO 4406 imasankhidwa 5μm, 15μm miyeso iwiriyi, chifukwa kafukufuku wasonyeza kuti 5μm particles adzachititsa kuvala kwambiri, ndi> 15μm particles adzachititsa zigawo hayidiroliki anamamatira, kotero kuti miyeso iwiriyi kwenikweni zimasonyeza kuvala mafuta, zinthu munakhala.
Momwe mungasinthire ukhondo wamafuta a hydraulic pansi pamiyezo yosiyanasiyana?Gome lotsatirali likuwonetsa njira yosinthira pakati pa tebulo la ISO4406 laukhondo ndi miyezo yosiyanasiyana:
Matebulo omwe ali mu bukhuli amalola ogwiritsa ntchito kugwiritsa ntchito zowerengera zonyamula zonyamula kuti aziwonakugwirizana pakati pa mawerengedwe a tinthu ting'onoting'ono pamitundu yosiyanasiyana ndi manambala a code yofotokozerazosiyanasiyana kuipitsidwa miyezo.
Dziwani kuti zina mwazolemba patebulo zimatanthauzidwa ngati mawerengero ophatikizika (monga "> 6µm") ndizina zimatanthauzidwa ngati mawerengero osiyanitsira (monga 6–14µm”).
Kukula kwa tinthu ting'onoting'ono koperekedwa ngati "µm" kumatanthauza ACFTD (ie Air Cleaner Fine Test Fumbi)zogawa.Kukula kwa tinthu ting'onoting'ono koperekedwa ngati "µm(c)" kumatanthauza MTD (ie ISO Medium TestFumbi) magawo.
Miyezo yonse imawerengedwa pa voliyumu iliyonse, ndipo imapereka njira zosavuta zosinthira tinthuamawerengera malire omwe ndi osavuta kuwamasulira.Pozindikira zofunikira za muyezo,
kuwerengera kwa tinthu kumatha kusinthidwa molondola kukhala milingo yoipitsidwa.
Mtengo wa 1638
Muyezo waukhondo wa NAS 1638 unapangidwira zida zazamlengalenga ku US ndiikugwiritsidwabe ntchito kwambiri popangira mphamvu zamagetsi zamafakitale ndi zamlengalenga.
Ziwerengerozi ndizosiyana, ndipo kalasi ya NAS nthawi zambiri imanenedwa ngati chiwerengero chimodzikuimira pazipita analola tinthu kuwerengera (ie choipitsitsa) kwa tinthu anasankhamakulidwe osiyanasiyana.
Nthawi yotumiza: Aug-18-2022