Kev siv tshuab thev naus laus zis tau tshwm sim nyob rau xyoo pua 17th nrog dej ua qhov nruab nrab ua haujlwm, tab sis dej viscosity tsawg, tsis muaj roj nplua nyeem, muaj zog xeb thiab teeb meem xeb, txwv kev txhim kho cov cuab yeej siv tshuab. Thaum pib ntawm lub xyoo pua 20th, qhov tshwm sim ntawm cov ntxhia-based hydraulic roj, nrog rau kev tuaj txog ntawm cov roj-resistant roj hmab cov ntaub ntawv sib khi, zoo heev txhawb txoj kev txhim kho thiab nthuav dav siv cov tshuab thev naus laus zis, 85% ntawm cov tshuab hydraulic tseem siv cov ntxhia- raws li cov roj hydraulic, nyob hauv txoj haujlwm tseem ceeb.
Txawm li cas los xij, rau lub sijhawm ntev, cov roj hydraulic tau tsim tawm thaum siv thiab kho cov txheej txheem hydraulic tsis tsuas yog nkim lub zog thiab ua rau pom ib puag ncig, tab sis kuj tseem siv tshuaj ntxiv tshuaj uas muaj magnesium, barium, zinc thiab lwm yam hlau hnyav los txhim kho kev ua haujlwm ntawm qee cov roj hydraulic, uas ua rau muaj kev hem thawj rau ib puag ncig thiab tib neeg kev noj qab haus huv.
Nrog kev vam meej ntawm zej zog thiab kev txhim kho ntawm science thiab thev naus laus zis, teeb meem ntawm ib puag ncig, peev txheej thiab tib neeg kev noj qab haus huv tau dhau los ua ntau yam teeb meem tseem ceeb uas tib neeg tau mloog. Xyoo 1987, Pawg Neeg Saib Xyuas Ib puag ncig tau hais txog qhov teeb meem ntawm kev txhim kho kom ruaj khov, xyoo 1996 tau tshaj tawm ISO14000 ib puag ncig kev tswj hwm tus qauv, yog li ntawd, kev txuag hluav taws xob, kev tiv thaiv ib puag ncig tau dhau los ua qhov teeb meem tseem ceeb ntawm kev tsim kho kev lag luam tshiab, uas tau ua rau muaj teeb meem loj rau hydraulic tshuab.
Rau daim ntawv thov thiab kev txhim kho cov dej hydraulic, biodegradable hydraulic roj thiab kub thiab siab siab hydraulic system, nws yog qhov tsim nyog los tsim cov ntaub ntawv sib khi tshiab thiab cov qauv sib khi tshiab. Raws li cov yam ntxwv ntawm kev muaj zog xeb ntawm cov dej hydraulic, nws yog qhov tsim nyog los txhim kho cov khoom siv tiv thaiv xeb tshiab kom tau raws li qhov xav tau ntawm cov khoom tsim khoom tsim hluav taws xob.
Nyob rau lub ntsej muag ntawm cov peev txheej txuag thiab nce ntxiv nruj kev tiv thaiv ib puag ncig xav tau, nws yog qhov tshiab ntawm kev siv tshuab thev naus laus zis txhim kho txhawm rau nrhiav lwm cov khoom lag luam ntawm cov roj-raws li cov roj hydraulic, txhim kho sai biodegradable hydraulic roj thiab cov dej ntshiab hydraulic system, uas tau muaj txiaj ntsig zoo los ntawm Tebchaws Asmeskas, European Union, Nyij Pooj thiab lwm lub tebchaws hauv ntiaj teb. Piv txwv li, hauv qee lub tebchaws European, cov roj hydraulic siv hauv kev txiav ntoo thiab nuv ntses yuav tsum yog biodegradable kom ua tiav kev tiv thaiv ib puag ncig thiab kev txhim kho kom ruaj khov. Txij li xyoo 2000, tsoomfwv German tau faib nyiaj tshwj xeeb ntawm 100 lab daus las txhua xyoo rau kev txhim kho thiab txhawb nqa cov dej ua kua dej biodegradable.
Biodegradable hydraulic roj kuj tseem hu ua ib puag ncig zoo hydraulic roj lossis roj ntsuab roj, uas tuaj yeem ua tau raws li qhov xav tau ntawm cov txheej txheem hydraulic, thiab nws cov khoom siv tsis ua mob rau ib puag ncig. Tam sim no, kev hloov pauv sai sai ntawm cov roj hydraulic tsim tawm txawv teb chaws feem ntau yog cov roj hluavtaws thiab cov roj zaub hom ob.
Zaub roj hydraulic roj muaj qhov ua tau zoo lubrication, tsis muaj kuab lom, pheej yig, thiab yooj yim biodegradable, tab sis nws qhov siab thiab qis kub ua haujlwm tsis zoo tagnrho. Cov roj hluavtaws yam roj hydraulic muaj qhov ua tau zoo ntawm qhov kub tsis txias, ua npuas dej tsis kam, txhuam tsis kam thiab ua kom kub zoo oxidation tsis kam, ua haujlwm ntev, tsis muaj tshuaj lom, biodegradable sai, nws biodegradation hauv 28 txog 90 hnub ntau dua 60%. Yog li ntawd, hluavtaws lipid biodegradable lubricating roj yog suav tias yog cov roj hydraulic zoo tshaj plaws.
Tam sim no, qhov teeb meem tseem ceeb ntawm cov khoom siv lipid-biodegradable hydraulic kua yog qhov tsis zoo hydrolysis tsis ruaj khov, thiab tus nqi yog 3 txog 5 zaug ntawm cov ntxhia raws cov kua dej. Los ntawm qhov yuav tsum tau muaj kev tiv thaiv ib puag ncig, raws li cov kws tshaj lij kwv yees hais tias nyob rau 10 xyoo tom ntej no, feem ntau ntawm cov ntxhia roj uas siv hauv cov tshuab taug kev yuav hloov los ntawm cov roj hydraulic uas tuaj yeem biodegradable sai.
