Yuav ua li cas koj xaiv cov roj zoo rau koj lub twj tso kua mis Hydraulic?
Kev siv cov roj hydraulic tsis raug yog tus tua neeg uas ntsiag to rau koj cov khoom siv. Nws ua rau overheating, hnav ntxov ntxov, thiab kev ua haujlwm qeeb, ntsiag to rhuav tshem koj lub twj tso kua mis los ntawm sab hauv tawm thiab ua rau kev ua tsis tiav.
Xaiv koj cov roj raws li nws qib ISO viscosity (VG), feem ntau VG 32 lub VG 46 rau feem ntau portable twj. Xyuas kom nws muaj cov khoom tiv thaiv (AW) additives thiab xav txog qhov kev khiav hauj lwm kub - siv ib tug qis viscosity rau txias thiab siab dua rau cua sov.
Kuv ib zaug tau mus xyuas qhov chaw tsim kho nyob nruab nrab ntawm lub caij ntuj no hauv Minnesota. Cov neeg coob tau tawm tsam nrog lub twj tso kua mis hydraulic uas ua rau qeeb heev nws tsis tuaj yeem ua haujlwm lawv cov cuab yeej. Lawv chim heev, xav tias lub twj tso kua mis ua tsis tiav. Kuv saib ib qho ntawm cov roj uas lawv tau siv - nws yog tuab li molasses nyob rau hauv qis-zero kub. Nws yog cov roj zoo, tab sis kiag li tsis ncaj ncees lawm rau tej yam kev mob. Peb hloov nws tawm rau qis viscosity roj (ib VG 22) uas peb pom zoo rau huab cua txias. Lub twj tso kua mis tam sim ntawd tuaj rau txoj sia, khiav smoothly thiab haib. Qhov kev paub ntawd yog ib zaj lus qhia muaj zog: even the best pump in the world can't perform if it's fighting to move oil that has turned to sludge.
Yog vim li cas roj viscosity thiaj tseem ceeb?
Koj paub tias koj xav tau cov roj hydraulic, tab sis tus lej sib txawv tsis meej pem. Xaiv qhov tsis ncaj ncees lawm tuaj yeem ua rau koj lub twj tso kua mis qeeb dhau lossis tsis muaj kev tiv thaiv, and you're not sure which is worse.
Viscosity is the oil's thickness and its resistance to flow. If it's too thick, lub twj tso kua mis tawm tsam thiab overheats. If it's too thin, nws tsis lubricate kom zoo, ua rau hnav sai.
"Goldilocks" Txoj Cai ntawm Roj
Viscosity yog ib qho tseem ceeb tshaj plaws ntawm cov roj hydraulic. Raws li ib tug neeg kho tshuab engineer, Kuv piav qhia rau kuv cov neeg siv khoom zoo li no: you need an oil that's "just right." Rau tus saib xyuas kev saib xyuas zoo li Michael, qhov no txhais tau tias xaiv cov roj uas nyias txaus kom ntws tau yooj yim rau hauv lub twj tso kua mis inlet (tiv thaiv cavitation) tab sis tuab txaus los tsim kom muaj zog, tiv thaiv zaj duab xis ntawm txav hlau qhov chaw. Cov yeeb yaj kiab no yog qhov tiv thaiv hnav thiab tsim kua muag. Feem ntau manufacturers, suav nrog LONGLOOD, qhia txog ISO Viscosity Qib (VG) rau lawv cov twj tso kua mis. Rau lub hom phiaj dav dav siv cov twj tso kua mis siab, qhov no feem ntau yog VG 32 lub VG 46. Xav txog cov lej no raws li tus qauv ntsuas ntawm qhov tuab ntawm qhov ntsuas kub tshwj xeeb (40°C). Sticking to the manufacturer's recommended VG is the safest way to ensure your pump has the right balance of flowability and protection for its designed operating conditions.
Common Viscosity Qib rau High-Pressure Pumps:
| ISO VG Qib | Kev piav qhia dav dav | Qhov zoo tshaj plaws siv Case |
|---|---|---|
| VG 22 | Nyias | Cov huab cua txias ua haujlwm lossis cov tshuab yuav tsum tau khiav ceev heev. |
| VG 32 | Nruab nrab-nyias | Cov lus pom zoo tshaj plaws rau kev siv thoob plaws hauv cov huab cua nruab nrab. |
| VG 46 | Nruab nrab-Thick | Zoo dua rau qhov kub thiab txias ib puag ncig lossis cov khoom siv qub nrog hnav ntau dua. |
| VG 68 | tuab | Feem ntau siv loj, nyob ruaj ruaj systems, tsis portable twj. |
Qhov ntsuas kub cuam tshuam li cas rau koj txoj kev xaiv roj?
Koj lub twj tso kua mis ua haujlwm zoo thaum sawv ntxov tab sis tau qeeb thiab tsis muaj zog thaum yav tav su tshav kub. Qhov kev ntxhov siab tsis sib xws no ua rau qeeb txoj haujlwm thiab ua rau koj nug txog kev ntseeg siab ntawm koj cov khoom siv.
Thaum tshav kub kub ua rau cov roj nyias nyias, txo nws cov viscosity thiab tiv thaiv cov khoom. Txias ua rau cov roj thicker, nce nws viscosity thiab starving lub twj tso kua mis. Xaiv cov roj raws li koj qhov kev thov kev khiav haujlwm kub, tsis yog huab cua xwb.
Viscosity tsis yog tus lej tas
A critical mistake I see people make is forgetting that an oil's viscosity changes dramatically with temperature. Tus lej ISO VG tsuas yog ib qho snapshot ntawm 40 ° C. Thaum lub twj tso kua mis khiav, nws ua kom sov. Raws li cov roj tau kub, nws tau thinner. Yog nyias nyias, cov yeeb yaj kiab tiv thaiv ntawm qhov chaw tuaj yeem tawg, ua rau cov hlau-on-hlau sib cuag thiab hnav sai. Qhov no yog vim li cas nyob rau hauv cov huab cua kub los yog high-cycle daim ntaub ntawv, ib tug me ntsis thicker roj zoo li VG 46 tej zaum yuav yog qhov kev xaiv zoo dua li VG 32. Qhov tsis sib xws yog muaj tseeb hauv qhov txias. Ib VG 32 roj tuaj yeem ua tuab dhau los ua kom zoo, ua rau muaj kev tshaib plab thiab cavitation qhov teeb meem uas kuv pom ntawm qhov chaw tsim kho lub caij ntuj no. Hauv cov xwm txheej no, qis viscosity roj yog qhov tseem ceeb. Rau cov cuab yeej siv nyob rau hauv qhov chaw uas muaj qhov kub thiab txias swings, ntau qib hydraulic roj nrog lub siab Viscosity Index (VI) yog ib qho kev daws teeb meem zoo, raws li nws tuav ib tug ruaj khov viscosity nyob rau hauv ib tug wider kub ntau yam.
Hom roj twg koj yuav tsum siv tiag?
Taug kev hauv khw, you're faced with a wall of different hydraulic oils. Lawv sawv daws zoo ib yam. Xaiv qhov tsis ncaj ncees lawm yuav txhais tau tias tsis muaj kev lav phib xaub lossis ua rau koj lub twj tso kua muag kim.
Siv cov roj ntxhia zoo-raws li hydraulic roj nrog "AW" (tiv thaiv hnav) pob khoom ntxiv, txuam nrog ISO VG pom zoo los ntawm lub twj tso kua mis chaw tsim tshuaj paus. Rau feem ntau LONGLOOD cov cuab yeej, this AW 32 or AW 46.
Khaws nws yooj yim thiab zoo
Thaum muaj ntau yam complex thiab hluavtaws hydraulic kua nyob rau hauv kev ua lag luam, rau feem ntau ntawm cov ntawv thov kev lag luam, you don't need to overthink it. Ib tug qauv, siab zoo, ntxhia-raws li hydraulic roj yog lub workhorse ntawm kev lag luam. Qhov tseem ceeb tshaj plaws los nrhiav yog "AW" npe. Qhov no txhais tau hais tias cov roj muaj cov khoom siv ntxiv uas tsim los tiv thaiv lub twj tso kua mis los ntawm kev hnav nyob rau hauv cov kev kub ntxhov siab pom hauv peb lub cev. Cov additives no, zoo li zinc, tsim ib txheej sacrificial rau saum npoo hlau. When you stick to a reputable brand and the manufacturer's recommended viscosity grade (as AW 32 or AW 46), koj tuaj yeem ntseeg tau tias koj muab kev tiv thaiv zoo rau koj lub twj tso kua mis. Zam kev ntxias kom siv roj cav, kis tau tus mob, los yog lwm yam roj uas tsis yog-hydraulic. They don't have the right properties and will cause damage.
Phau ntawv qhia ceev:
- Siv dav dav (50° F rau 95 ° F / 10° C rau 35 ° C): Isos VG 32 Anti-Hmoov (AW 32) Hydraulic Roj.
- Rau Qhov Chaw Kub Kub (>95° F / 35°C): Isos VG 46 Anti-Hmoov (AW 46) Hydraulic Roj.
- Rau qhov chaw txias (<50° F / 10°C): Isos VG 22 Anti-Hmoov (AW 22) Hydraulic Roj.
Nco ntsoov xyuas koj phau ntawv qhia lub twj tso kua mis tshwj xeeb, tab sis phau ntawv qhia no yog qhov pib txhim khu kev qha rau feem ntau cov ntawv thov siab.
Tag
Xaiv cov roj hydraulic yog qhov yooj yim: match the manufacturer's recommended viscosity grade (zoo vg 32/46), xyuas kom nws muaj anti-hnav additives, thiab kho qhov kub thiab txias kom ntseeg tau tias lub twj tso kua mis mus ntev.