Density yemafuta eindasitiri
Zviri mukati
Basa reDensity muLubricant Performance
Pasinei nekupisa kwe ambient, kuwanda kwemagiredhi ese emafuta emuindasitiri ishoma pane kuwanda kwemvura. Sezvo mvura nemafuta zvisingasanganisi, kana mumudziyo muine mvura, madonhwe emafuta anoyangarara pamusoro.
Ndicho chikonzero kana mafuta emotokari yemotokari yako ane dambudziko remvura, mvura inodzika pasi pe sump uye inotanga kubuda pose panobviswa plug kana kuti valve yakavhurwa.
Iyo density yemafuta eindasitiri yakakoshawo kune kurongeka kwekuverenga kunoenderana nekuverenga kwe viscosity. Kunyanya, pakushandura iyo dynamic viscosity index mune kinematic density yemafuta, inofanirwa kuzivikanwa. Uye sezvo kuwanda kwechero yakaderera-viscosity svikiro haisi yenguva dzose kukosha, iyo viscosity inogona kugadzwa chete nekukanganisa kunozivikanwa.
Iyi midziyo yemvura yakakosha kune akati wandei mafuta emafuta. Semuenzaniso, sezvo kuwanda kwemafuta ekuzora kunowedzera, mvura yacho inowedzera. Izvi zvinotungamirira kukuwedzera kwenguva inodiwa kuti zvimedu zvigadzirise kubva pakusimwa. Kazhinji kazhinji, chikamu chikuru mukusimiswa kwakadaro ndiwo madiki madiki emarara. Ngura density kubva 4800…5600 kg/m3, saka mafuta ane ngura anokora. Mumatangi uye zvimwe midziyo yakagadzirirwa kuchengetedza kwechinguva mafuta, ngura zvidimbu zvinogara zvishoma nezvishoma. Mune chero hurongwa hunoshanda mitemo yekukweshana, izvi zvinogona kukonzera kukundikana, sezvo masisitimu akadaro achinyanya kutarisisa kune chero kusvibiswa. Saka, kana zvimedu zvakamira kwenguva yakareba, matambudziko akadai se cavitation kana corrosion anogona kuguma.
Density yemafuta akashandiswa mumaindasitiri
Density deviations ine chekuita nekuvapo kwemafuta ekunze ekunze kunokonzera:
- Kuwedzera maitiro kune cavitation, zvese panguva yekukweva uye mushure mekupfuura nemumitsetse yemafuta.
- Kuwedzera simba repombi yemafuta.
- Kuwedzera mutoro pazvikamu zvinofamba zvepombi.
- Kuparara kwemamiriro ekupomba nekuda kwechiitiko che mechanical inertia.
Chero mvura ine density yakakwira inozivikanwa kuti inobatsira kudzora kusvibiswa kuri nani nekubatsira mukutakura nekubvisa zvinyoro. Nekuti zvimedu zvakachengetwa mumakanika kumiswa kwenguva yakareba, zvinobviswa nyore nyore nemasefa uye mamwe masisitimu ekubvisa masisitimu, nekudaro kufambisa kuchenesa system.
Sezvo kuwanda kunowedzera, kukukurwa kwemvura kunowedzerawo. Munzvimbo dzine mhirizhonga yakakwira kana kumhanya kwakanyanya, mvura inogona kutanga kuparadza mapaipi, mavharuvhu, kana chero imwe nzvimbo iri munzira yayo.
Kuwanda kwemafuta emuindasitiri kunokanganiswa kwete chete nezvimedu zvimedu, asiwo nekusachena uye zvakasikwa zvinoumba semhepo nemvura. Oxidation inokanganisawo kuwanda kwemafuta: nekuwedzera kwesimba rayo, kuwanda kwemafuta kunowedzera. Semuenzaniso, kuwanda kweakashandiswa giredhi remafuta giredhi I-40A pakamuri tembiricha inowanzoita 920±20 kg/m.3. Asi nekuwedzera tembiricha, iyo density kukosha inoshanduka zvakanyanya. Hongu, pa40 °Nehuwandu hwemafuta akadaro atova 900±20 kg/m3,ku80 °C - 890±20kg/m3 etc. Data yakafanana inogona kuwanikwa kune mamwe marudzi emafuta - I-20A, I-30A, nezvimwewo.
Aya makoshero anofanirwa kutariswa sechiratidzo, uye chete nemamiriro ekuti imwe vhoriyamu yemafuta emhando imwe chete, asi iyo yakave nekusefa kwemuchina, haina kuwedzerwa kumafuta matsva emaindasitiri. Kana mafuta acho akavhenganiswa (somuenzaniso, I-20A yakawedzerwa kune I-40A giredhi), zvino chigumisiro chichabuda zvachose chisingatarisirwi.
Nzira yekugadzirisa sei mafuta density?
Kune mutsara wemafuta emaindasitiri GOST 20799-88 nyowani mafuta density kubva 880…920 kg/m3. Nzira iri nyore yekuziva chiratidzo ichi ndeyekushandisa yakakosha mudziyo - hydrometer. Kana ichinyudzwa mumudziyo nemafuta, kukosha kunodiwa kunobva kwatemwa nechikero. Kana pasina hydrometer, iyo nzira yekuona iyo density ichave yakaoma, asi kwete nezvakawanda. Kuti uedze, iwe unoda chubhu yegirazi yakaenzana neU, mudziyo une nzvimbo yegirazi hombe, thermometer, stopwatch uye sosi yekupisa. Iwe unozofanirwa kuita zvinotevera:
- Zadza mudziyo nemvura ne70 ... 80%.
- Pisa mvura kubva kune imwe kunze kusvika painofashaira, uye chengetedza tembiricha iyi isingachinji panguva yese yekuyedzwa.
- Nyura chubhu yegirazi yakaita U-mumvura kuitira kuti mitungamiriri miviri irambe iri pamusoro pemvura.
- Ivhara imwe yemaburi pachubhu zvakasimba.
- Dururira mafuta mumucheto wakavhurika weU-yakaita segirazi chubhu uye tanga yekumira.
- Kupisa kunobva mumvura inopisa kuchaita kuti mafuta apise, zvichiita kuti muzinga uri pamucheto wakashama wechubhu usimuke.
- Rekodha nguva inotora kuti mafuta akwire kusvika pachiyero chakarimwa uye wobva wadzokera pasi. Kuti uite izvi, bvisa ipulagi kubva kune yakavharwa chikamu chechubhu: chiyero chemafuta chichatanga kuderera.
- Isa kukurumidza kwekufamba kwemafuta: iyo yakaderera iyo, iyo yakakwirira density.
Iyo data yekuyedza inofananidzwa nereferensi density yemafuta akachena, ayo achakubvumidza iwe kunyatso tsvaga mutsauko uripo pakati peiyo chaiyo uye yakajairwa density, uye uwane yekupedzisira mhedzisiro nechiyero. Mhedzisiro yemuyedzo inogona kushandiswa kuongorora mhando yemafuta emaindasitiri, kuvepo kwemvura mairi, tsvina zvidimbu, nezvimwe.
