Mefuta ea Mekelikeli ea Hydraulic
Ho na le mefuta e fapaneng ea maro a hydraulic a nang le thepa e hlokahalang.Ka kakaretso, ha ho khethoa oli e loketseng, ho nahanoa lintlha tse 'maloa tsa bohlokoa.Ntlha ea pele, ho lumellana ha eona le litiiso, ho beha le likarolo ho bonoa;ea bobeli, viscosity ea eona le likarolo tse ling tse kang ho hanyetsa ho lokisa le botsitso ba tikoloho le tsona li nkoa.Ho na le mefuta e mehlano e meholo ea maro a phallo ea haeteroliki a khotsofatsang litlhoko tse fapaneng tsa sistimi.Tsena li tšohloa ka bokhutšoanyane ka tsela e latelang:
1. Mekelikeli e thehiloeng ho petroleum:
Oli ea liminerale ke oli e thehiloeng ho petroleum eo e leng maro a sebelisoang haholo a hydraulic.
Ha e le hantle, li na le boholo ba litšobotsi tse lakatsehang: li fumaneha habonolo ebile li na le chelete e ngata.Ho feta moo, li fana ka bokhoni bo botle ka ho fetisisa ba ho lubrication, mathata a fokolang a kutu 'me li lumellana le lisebelisoa tse ngata tsa tiiso.
Bothata bo le bong feela bo boholo ba maro ana ke ho chesa ha ’ona.Ba beha likotsi tsa mollo, haholo-holo ho tsoa moo ho lutlang teng, libakeng tse nang le mocheso o phahameng joalo ka liindasteri tsa tšepe, jj.
Oli ea diminerale e ntle bakeng sa mocheso o sebetsang ka tlase ho 50 ° C, Ha mocheso o phahame, oli ena e lahleheloa ke botsitso ba lik'hemik'hale 'me e etsa li-acids, li-varnish, joalo-joalo Tsena tsohle li lebisa ho lahleheloa ke litšobotsi tsa lubrication, ho senyeha ho eketsehileng, ho senya le mathata a amanang le ona.Ka lehlohonolo, ho na le li-additives tse ntlafatsang botsitso ba lik'hemik'hale, ho fokotsa oxidation, ho thehoa ha foam le mathata a mang.
Oli ea peterole e ntse e le setsi se sebelisoang haholo bakeng sa maro a haeteroliki.
Ka kakaretso, oli ea peterole e na le litšobotsi tse latelang:
1.Lubricity e babatsehang.
2.Higher demulsibility.
3.Ho hanyetsa oxidation ho feta.
4.Index ea viscosity e phahameng.
5.Tshireletso kgahlanong le mafome.
6.Litšobotsi tse ntle tsa ho tiisa.
7.Easy dissipation ea mocheso.
8.Ho hloekisa habonolo ka ho hloekisa.
Boholo ba thepa e lakatsehang ea mokelikeli, haeba e se e ntse e le teng ka har'a oli e tala, e ka kenyelletsoa ka ho hloekisa kapa ho eketsa li-additives.
Bothata bo ka sehloohong ba oli ea petroleum ke hore e chesa habonolo.Bakeng sa lits'ebetso moo mollo o ka bang kotsi, joalo ka ho phekola mocheso, ho cheselletsa motlakase ka metsi, ho etsa die casting, forging le tse ling tse ngata, ho na le mefuta e mengata ea maro a sa cheng.
2. Emulsions:
Li-emulsions ke motsoako oa maro a mabeli a sa sebetsaneng le a mang ka lik'hemik'hale.Hangata ho sebelisoa li-emulsions tsa oli le metsi tse thehiloeng ho petroleum.Hangata emulsifier e kenngoa ho emulsion, e bolokang metsi e le marotholi a manyenyane 'me e sala e fanyehiloe ka har'a metsi a mang.
Ho sebelisoa mefuta e 'meli ea emulsion:
Li-emulsions tsa oli ka metsing:
Emulsion ena e na le metsi e le karolo e ka sehloohong, ha marotholi a manyenyane a oli a qhalakanngoa ho eona.Ka kakaretso, ho hlapolla ha oli ho na le moeli, hoo e ka bang 5%;
ka hona, e bontša litšobotsi tsa metsi.Meeli ea eona ke viscosity e mpe, e lebisang mathateng a ho lutla, tahlehelo ea bokhoni ba volumetric le thepa e mpe ea lubrication.Mathata ana a ka hlōloa ka tekanyo e khōloanyane ka ho sebelisa metsoako e itseng.Li-emulsions tse joalo li sebelisoa ka lipompong tse phahameng, tse lebelo le tlase (joalo ka lits'ebetsong tsa merafo).
Li-emulsions tsa metsi ka oli:
Li-emulsions tsa metsi ka har'a oli, tseo hape li bitsoang li-emulsion tse fapaneng, ha e le hantle ke oli e thehiloeng moo marotholi a manyenyane a metsi a qhalakantsoeng ho pholletsa le karolo ea oli.Ke li-hydraulic fluid tse tsebahalang haholo tse sa cheng.Ba bonahatsa ho feta ea tšobotsi e kang oli;ka hona, li na le li-viscosity tse ntle le thepa ea lubrication.Emulsion e sebelisoang hangata e na le dilution ea oli ea 60% le 40% ea metsi.Li-emulsion tsena li molemo bakeng sa ts'ebetso ea 25 ° C, kaha mocheso o phahameng, metsi a fetoha mouoane 'me a lebisa tahlehelong ea thepa e thibelang mollo.
3. Glycol ea metsi:
Water glycol ke mokelikeli o mong o sa cheng o atisang ho sebelisoa mecheng ea li-hydraulic systems.Ka kakaretso e na le matla a tlaase a ho lubrication ha e bapisoa le oli ea diminerale 'me ha e tšoanelehe bakeng sa lisebelisoa tse phahameng tsa mocheso.E na le metsi le glycol ka karolelano ea 1: 1.Ka lebaka la tlhaho ea eona ea metsi le boteng ba moea, e atisa ho ba le oxidation le mathata a amanang le eona.E hloka ho eketsoa ka li-oxidation inhibitors.Tlhokomelo e lekaneng ea hlokahala ha ho sebelisoa mokelikeli ona kaha o chefo ebile o senya lirapeng tse itseng tse kang zinki, magnesium le aluminium.Hape, ha ea lokela ts'ebetso ea mocheso o phahameng kaha metsi a ka fetoha mouoane.Leha ho le joalo, e ntle haholo bakeng sa lisebelisoa tsa mocheso o tlase kaha e na le litšobotsi tse phahameng tsa antifreeze.
4. Mekelikeli ea maiketsetso:
Mokelikeli oa maiketsetso, o thehiloeng ho phosphate ester, ke mokelikeli o mong o tsebahalang o sa cheng.E loketse lits'ebetso tsa mocheso o phahameng, kaha e bonts'a viscosity e ntle le litšobotsi tsa lubrication.Ha e loketse lits'ebetso tsa mocheso o tlase.Ha e lumellane le lisebelisoa tse tloaelehileng tsa ho tiisa tse kang nitrile.Ha e le hantle, kaha e theko e boima, e hloka lisebelisoa tsa ho tiisa tse theko e boima (viton).Ho feta moo, phosphate ester ha se mokelikeli o sa sebeliseng tikoloho.E boetse e hlasela aluminium le lipente.
5. Lioli tsa meroho:
Keketseho ea tšilafalo ea lefatše lohle e entse hore ho sebelisoe maro a mangata a baballang tikoloho.Lioli tse entsoeng ka meroho lia senyeha 'me li bolokehile tikolohong.Li na le thepa e ntle ea lubrication, viscosity e itekanetseng ebile ha li theko e tlase.Li ka etsoa hore li be le litšobotsi tse ntle tsa ho hanyetsa mollo ka li-additives tse itseng.Oli ea meroho e na le tšekamelo ea ho oxidize habonolo le ho monya mongobo.Asiti, ho bopeha ha seretse le mathata a kutu a matla ho feta oli ea meroho ho feta oli ea liminerale.Kahoo, oli ea meroho e hloka li-inhibitors tse ntle ho fokotsa mathata a oxidation.
6. Mekelikeli ea haeteroliki e ka senyehang:
Ha mekhatlo e ntse e tsoela pele ho utloisisa boikarabello ba eona sechabeng 'me e retelehela mecheng e bolokang tikoloho le tsamaiso ea ts'ebetso, mokelikeli oa haeteroliki o senyehang o fetoha sehlahisoa se batloang qalong ea mehla ea bo-ralitaba.Mekelikeli ea haeteroliki e ka senyehang, ka tsela e 'ngoe e tsejoang ka hore ke li-hydraulic fluids, li-bio-based hydraulic fluid li sebelisa soneblomo, rapeseed, soya, joalo-joalo, joalo ka oli ea mantlha, ka hona li baka tšilafalo e nyane tabeng ea ho lutla ha oli kapa ho hloleha ha li-hydraulic hose.Mekelikeli ena e na le thepa e ts'oanang le ea mokelikeli oa anti-wear hydraulic fluid, Hypothetically, haeba k'hamphani e rera ho hlahisa maro a thehiloeng ho bio ka har'a likarolo tsa hydraulic tsa mochini mme khatello ea ts'ebetso e lumelletsoeng ea likarolo tsa hydraulic e fokotsehile ho isa ho 80. %, joale e ka lebisa phokotsong ea 20% ea matla a ho phatloha ka lebaka la phokotso ea 20% ea khatello ea ts'ebetso ea moepolli.Ho joalo hobane ho fokotseha ha khatello ea ts'ebetso ea sistimi ho lebisa ho fokotseng matla a actuator.
Ntle le moo, phetoho e ne e ke ke ea kenyelletsa feela litšenyehelo tsa mokelikeli le ho thellisoa ha mochini ho tloha ho oli ea liminerale ho ea ho oli ea meroho khafetsa empa hape e kenyellelitse litšenyehelo tse theolelang tsa mochini.
Lintlha tse Susumetsang ho Khetha Mokelikeli
Khetho ea mokelikeli oa hydraulic bakeng sa sistimi e fanoeng e laoloa ke lintlha tse latelang:
1. Khatello ea ts'ebetso ea tsamaiso.
2. Mocheso o sebetsang oa tsamaiso le ho fapana ha oona.
3. Boitsebiso ba tsamaiso le ho lumellana ha eona le oli e sebelisoang.
4. Lebelo la ts'ebetso.
5. Ho fumaneha ha mokelikeli o ncha.
6. Litšenyehelo tsa likhoele tsa phetiso.
7. Menyetla ea tšilafalo.
8. Boemo ba tikoloho (boemo ba mollo, moea o feteletseng joalo ka morafong, joalo-joalo)
9. Lubricity.
10. Polokeho ho opareitara.
11. Bophelo ba tšebeletso bo lebeletsoeng.
Nako ea poso: Mar-08-2022