Hom Hydraulic Fluids |Hydraulic Fluid Selection

Hom Hydraulic Fluids

Muaj ntau hom hydraulic kua dej uas muaj qhov yuav tsum tau ua.Feem ntau, thaum xaiv cov roj tsim nyog, ob peb yam tseem ceeb raug txiav txim siab.Ua ntej, nws compatibility nrog cov ntsaws ruaj ruaj, bearing thiab Cheebtsam yog pom;Thib ob, nws cov viscosity thiab lwm yam tsis xws li kho qhov tsis kam thiab ib puag ncig stability kuj raug txiav txim siab.Muaj tsib yam loj ntawm cov kua dej hydraulic uas ua tau raws li ntau yam kev xav tau ntawm lub cev.Cov no tau tham luv luv raws li hauv qab no:

1.Petroleum-based kua:
Cov roj ntxhia yog cov roj av uas siv cov kua dej ntau tshaj plaws.
Yeej, lawv muaj feem ntau ntawm cov yam ntxwv uas xav tau: lawv yooj yim muaj thiab muaj kev lag luam.Tsis tas li ntawd, lawv muaj lub peev xwm lubrication zoo tshaj plaws, muaj teeb meem corrosion tsawg thiab sib haum nrog cov ntaub ntawv foob feem ntau.
Tib qhov tsis zoo ntawm cov kua dej no tsuas yog lawv cov nplaim taws.Lawv tsim teeb meem hluav taws kub, feem ntau yog los ntawm cov dej xau, nyob rau hauv qhov chaw kub kub xws li steel industries, thiab lwm yam.
Cov roj ntxhia zoo rau kev ua haujlwm kub qis dua 50 ° C, Thaum kub dua, cov roj no poob lawv cov tshuaj ruaj khov thiab tsim cov kua qaub, kua roj vanish, thiab lwm yam. Tag nrho cov no ua rau poob ntawm lubrication yam ntxwv, nce hnav thiab tsim kua muag, corrosion thiab lwm yam teeb meem.Hmoov zoo, muaj cov khoom ntxiv uas txhim kho cov tshuaj lom neeg ruaj khov, txo oxidation, ua npuas ncauj thiab lwm yam teeb meem.
Cov roj av tseem yog nyob deb ntawm qhov siv ntau tshaj plaws rau cov kua dej hydraulic.
Feem ntau, cov roj av muaj cov khoom nram qab no:
1.Lubricity zoo heev.
2.Ntau demulsibility.
3.Ntau oxidation kuj.
4.Ntau viscosity Performance index.
5.Kev tiv thaiv xeb.
6.Zoo sealing yam ntxwv.
7.Easy dissipation ntawm tshav kub.
8. Yooj yim ntxuav los ntawm kev pom.
Feem ntau ntawm cov khoom tsim nyog ntawm cov kua dej, yog tias tsis tau muaj nyob rau hauv cov roj crude, tuaj yeem koom ua ke los ntawm kev ua kom zoo lossis ntxiv cov khoom ntxiv.
Lub ntsiab tsis zoo ntawm cov roj av yog tias nws hlawv yooj yim.Rau cov ntawv thov uas hluav taws tuaj yeem ua rau muaj kev phom sij, xws li kev kho cua sov, kev siv hluav taws xob, kev tuag casting, forging thiab ntau lwm yam, muaj ntau hom hluav taws kub-resistant fluids.

2. Emulsions:
Emulsions yog ib qho sib xyaw ntawm ob cov kua dej uas tsis muaj tshuaj lom nrog lwm tus.emulsions ntawm roj av-raws li roj thiab dej feem ntau yog siv.Ib qho emulsifier feem ntau yog ntxiv rau emulsion, uas khaws cov kua ua kua me me thiab tseem raug tshem tawm hauv lwm cov kua.
Ob hom emulsion yog siv:
Roj-hauv-dej emulsion:
Cov emulsion no muaj dej raws li theem tseem ceeb, thaum cov roj me me tau tawg mus rau hauv nws.Feem ntau, cov roj dilution yog txwv, txog 5%;
yog li ntawd, nws nthuav tawm cov yam ntxwv ntawm dej.Nws cov kev txwv yog cov viscosity tsis zoo, ua rau muaj teeb meem to, poob hauv volumetric efficiency thiab tsis zoo lubrication zog.Cov teeb meem no tuaj yeem kov yeej ntau dua los ntawm kev siv qee yam tshuaj ntxiv.Xws li emulsions yog siv nyob rau hauv siab hloov chaw, qis-ceev twj tso kua mis (xws li nyob rau hauv mining daim ntaub ntawv).
Dej-hauv-roj emulsions:
Dej-hauv-roj emulsions, tseem hu ua inverse emulsions, yog cov roj raws li cov tee dej me me tau tawg thoob plaws hauv cov roj theem.Lawv yog cov nrov tshaj plaws hluav taws-resistant hydraulic kua.Lawv nthuav tawm ntau tus yam ntxwv zoo li roj;Yog li ntawd, lawv muaj viscosity zoo thiab lubrication zog.Feem ntau siv emulsion muaj dilution ntawm 60% roj thiab 40% dej.Cov emulsions no zoo rau kev khiav hauj lwm ntawm 25 ° C, raws li nyob rau ntawm qhov kub thiab txias, dej evaporates thiab ua rau poob ntawm hluav taws-resistant zog.

3. Dej glycol:
Dej glycol yog lwm cov kua dej uas tsis muaj hluav taws xob feem ntau siv hauv cov tshuab hydraulic.Nws feem ntau muaj lub peev xwm lubrication tsawg piv rau cov roj ntxhia thiab tsis haum rau cov ntawv thov kub.Nws muaj dej thiab glycol hauv qhov sib piv ntawm 1: 1.Vim nws qhov xwm txheej aqueous thiab muaj huab cua, nws yooj yim rau oxidation thiab lwm yam teeb meem.Nws yuav tsum tau ntxiv nrog oxidation inhibitors.Kev saib xyuas txaus yog qhov tseem ceeb hauv kev siv cov kua dej no vim nws muaj tshuaj lom thiab corrosive rau qee yam hlau xws li zinc, magnesium thiab txhuas.Ntxiv dua thiab, nws tsis haum rau kev ua haujlwm kub kub vim tias cov dej yuav evaporate.Txawm li cas los xij, nws yog qhov zoo heev rau kev siv qis-kub raws li nws muaj cov yam ntxwv ua kom tsis muaj zog.

4. Synthetic kua:
Cov kua hluavtaws, raws li phosphate ester, yog lwm cov kua hluav taws kub-resistant.Nws yog qhov tsim nyog rau kev siv kub-kub, vim nws pom zoo viscosity thiab lubrication yam ntxwv.Nws tsis haum rau cov ntawv thov kub qis.Nws tsis sib xws nrog cov khoom siv sib khi xws li nitrile.Yeej yog kim, nws yuav tsum tau kim sealing cov ntaub ntawv (viton).Tsis tas li ntawd, phosphate ester tsis yog ib puag ncig-phooj ywg kua.Nws kuj tawm tsam aluminium thiab xim.

5. Cov roj zaub:
Qhov nce hauv ntiaj teb cov pa phem tau ua rau kev siv cov kua dej ntau dua ib puag ncig.Cov roj zaub raws li biodegradable thiab muaj kev nyab xeeb ib puag ncig.Lawv muaj lubrication zoo, nruab nrab viscosity thiab tsis tshua kim.Lawv tuaj yeem raug tsim kom muaj cov yam ntxwv zoo tiv thaiv hluav taws nrog qee yam ntxiv.Cov roj zaub muaj qhov nyiam ua kom yooj yim oxidize thiab nqus dej noo.Cov acidity, sludge tsim thiab corrosion teeb meem yog hnyav nyob rau hauv cov roj zaub ntau tshaj li cov ntxhia roj.Yog li ntawd, cov roj zaub xav tau cov inhibitors zoo los txo cov teeb meem oxidation.

6. Biodegradable hydraulic kua:
Raws li ntau thiab ntau lub koom haum tau nkag siab txog lawv lub luag haujlwm hauv zej zog thiab tab tom tig mus rau eco-friendly machinery thiab kev ua haujlwm, biodegradable hydraulic kua yog dhau los ua ib qho khoom nrhiav tom qab kaj ntug ntawm ib puag ncig.Biodegradable hydraulic kua, hloov lub npe hu ua bio-based hydraulic kua, Bio-raws li hydraulic kua siv paj noob hlis, rapeseed, soybean, thiab lwm yam, raws li cov roj hauv paus thiab li no ua rau muaj kuab paug tsawg nyob rau hauv cov ntaub ntawv ntawm cov roj xau los yog hydraulic hose tsis ua hauj lwm.Cov kua dej no muaj cov khoom zoo sib xws xws li cov roj ntxhia-raws li cov kua dej los tiv thaiv cov dej hydraulic, Hypothetically, yog tias lub tuam txhab npaj yuav qhia cov kua dej bio-raws li rau hauv cov khoom siv hydraulic ntawm cov tshuab thiab kev tso cai ua haujlwm siab ntawm hydraulic Cheebtsam raug txo mus rau 80. %.Nws yog vim li no vim tias qhov txo qis hauv kev ua haujlwm siab ntawm lub kaw lus ua rau txo qis hauv actuator quab yuam.
Tsis tas li ntawd, kev hloov pauv yuav tsis tsuas yog suav nrog cov nqi ntawm cov kua dej thiab cov dej ntws tawm ntawm cov tshuab kom dhau los ntawm cov roj ntxhia mus rau cov roj zaub ntau zaus, tab sis kuj suav nrog cov nqi derating ntawm cov tshuab.
Cov yam ntxwv cuam tshuam rau kev xaiv cov kua dej
Kev xaiv cov kua dej hydraulic rau ib qho kev muab yog tswj hwm los ntawm cov hauv qab no:
1. Kev ua haujlwm siab ntawm qhov system.
2. Kev ua haujlwm kub ntawm qhov system thiab nws qhov kev hloov pauv.
3. Cov khoom siv ntawm lub cev thiab nws cov kev sib raug zoo nrog cov roj siv.
4. Ceev ntawm kev ua haujlwm.
5. Muaj cov kua dej hloov.
6. Tus nqi ntawm cov kab sib kis.
7. Muaj peev xwm kis tau.
8. Ib puag ncig (kev kub ntxhov, huab cua huab cua zoo li hauv mining, thiab lwm yam)
9. Lubricity.
10. Kev nyab xeeb rau tus neeg teb xov tooj.
11. Lub neej kev pab cuam.


Post lub sij hawm: Mar-08-2022