Ukugcotshwa kwamafutha ngokuvamile kulungele ukusetshenziswa kwesivinini esiphansi ukuya esimaphakathi lapho izinga lokushisa elisebenzayo lebheringi lingaphansi kwezinga lokushisa elilinganiselwe lamafutha. Awekho amafutha athwala i-anti-friction afanele zonke izinhlelo zokusebenza. Igrisi ngayinye inokusebenza okulinganiselwe kanye nezici. Igrisi iqukethe uwoyela wesisekelo, ukuqina kanye nezithasiselo. I-Bearing grease ngokuvamile iqukethe i-petroleum base oil egqinswe ngensipho yensimbi ethile. Eminyakeni yamuva nje, ama-organic and inorganic thickeners aye afakwa emafutheni ayisisekelo okwenziwa. Ithebula lama-26 lifingqa ukubunjwa kwamafutha ajwayelekile. Ithebula 26. Izithako Ze-Grease Base Oil Thickener Additive Grease Mineral Oil Synthetic Hydrocarbon Ester Substance Perfluorinated Oil Silicone Lithium, Aluminium, Barium, Calcium and Compound Soap Izinhlayiyana Ezingaphunga (inorganic) IGlue (ubumba), carbon black, silica gel-free-free PTFE (organic) i-polyurea compound rust inhibitor dye tackifier metal passivator antioxidant anti-wear extreme pressure additive ama-calcium-based and aluminium-based greases anokumelana namanzi okuhle kakhulu, Afanele ukusetshenziswa kwezimboni ezidinga ukuvimbela ukungena komswakama. Amafutha asuselwa ku-lithium anokusetshenziswa okuningi futhi afanele ukusetshenziswa kwezimboni kanye nama-wheel-end bearings.
Amafutha ayisisekelo okwenziwa, njengama-esters, ama-esters e-organic kanye nama-silicone, lapho esetshenziswa nezithako ezivame ukusetshenziswa nezithasiselo, izinga lokushisa eliphakeme lokusebenza livame ukuba ngaphezu kwezinga lokushisa eliphezulu lokusebenza lamafutha asekelwe ku-petroleum. Izinga lokushisa elisebenzayo lamafutha okwenziwa lingasuka ku--73°C liye ku-288°C. Okulandelayo yizici ezijwayelekile zama-thickeners avame ukusetshenziswa ngamafutha asuselwa ku-petroleum. Ithebula 27. Izici ezijwayelekile zokujiya ezisetshenziswa namafutha asuselwa ku-petroleum Ama-Thickeners Typical Drapping Point Maximum Temperature Ukumelana Namanzi Ngokusebenzisa izingqimba eziseThebulani lama-27 ngamafutha okwenziwa e-hydrocarbon noma e-ester, izinga lokushisa eliphezulu kakhulu lingafinyelelwa Khuphuka cishe ngo-10°C.
°C °F °C °F
I-Lithium 193 380 121 250 enhle
I-Lithium complex 260+ 500+ 149 300 enhle
Isisekelo se-aluminium esiyinhlanganisela 249 480 149 300 esihle kakhulu
I-calcium sulfonate 299 570 177 350 enhle kakhulu
I-Polyurea 260 500 149 300 Kuhle
Ukusetshenziswa kwe-polyurea njenge-thickener kungenye yentuthuko ebaluleke kakhulu emkhakheni wokugcoba iminyaka engaphezu kwengu-30. Igrisi ye-polyurea ikhombisa ukusebenza okuhle kakhulu ekusetshenzisweni okuhlukahlukene kokuthwala, futhi ngesikhathi esifushane, sekuqashelwe njengebhola eliphethe okokugcoba kwangaphambili. Izinga lokushisa eliphansi Ngaphansi kwezimo zokushisa eziphansi, i-torque yokuqala yama-bearings agcotshwe ngamafutha ibaluleke kakhulu. Amanye amafutha angasebenza ngokujwayelekile kuphela lapho ukuthwala kusebenza, kodwa kuzodala ukumelana okukhulu ekuqaleni kokuthwala. Kweminye imishini emincane, ingase ingaqali lapho izinga lokushisa liphansi kakhulu. Endaweni enjalo yokusebenza, kuyadingeka ukuthi amafutha abe nezici zokushisa okuphansi kokuqala. Uma izinga lokushisa lokusebenza libanzi, amafutha okwenziwa anezinzuzo ezisobala. Ugrisi usengenza itorque yokuqala neyokugijima ibencane kakhulu ezingeni lokushisa eliphansi elingu -73°C. Kwezinye izimo, lawa mafutha enza kangcono kunama-lubricant kulokhu. Iphuzu elibalulekile mayelana namafutha ukuthi ukuqala i-torque akuwona umsebenzi wokungaguquguquki kwamafutha noma ukusebenza okuphelele. I-torque yokuqala ifana nomsebenzi wokusebenza komuntu ngamunye kwegrisi ethile, futhi kunqunywa isipiliyoni.
Izinga lokushisa eliphezulu: Umkhawulo wokushisa ophezulu wamafutha wesimanje ngokuvamile uwumsebenzi obanzi wokuzinza kokushisa kanye nokumelana ne-oxidation yamafutha ayisisekelo kanye nempumelelo ye-oxidation inhibitors. Ububanzi bokushisa bamafutha bunqunywa indawo yokuwa ye-grease thickener kanye nokwakheka kwamafutha ayisisekelo. Ithebula 28 libonisa izinga lokushisa lamafutha ngaphansi kwezimo ezihlukahlukene zamafutha ayisisekelo. Ngemva kweminyaka yokuhlolwa ngama-bearings agcotshwe ngamafutha, izindlela zayo ezisetshenziswayo zibonisa ukuthi impilo yamafutha okugcoba izokwehliswa ngesigamu kukho konke ukukhuphuka kwezinga lokushisa ngo-10°C. Isibonelo, uma impilo yesevisi yegrisi ekushiseni kwe-90 ° C ingamahora angu-2000, lapho izinga lokushisa likhuphuka libe ngu-100 ° C, impilo yesevisi iyancipha ibe cishe amahora angu-1000. Ngokuphambene, ngemva kokwehlisa izinga lokushisa libe ngu-80 ° C, impilo yesevisi kulindeleke ukuthi ifinyelele amahora angu-4000.
Isikhathi sokuthumela: Jun-08-2020