Ukuhlaziywa kwamazinga okushisa aphansi kanye nemvelo yokushisa ephezulu ye-greese egcotshisiwe

I-Grease Lubrication ngokuvamile ilungele izicelo eziphansi eziphakathi nendawo lapho izinga lokushisa lokusebenza lingaphansi kokushisa komkhawulo we-grease. Ayikho i-anti-pury ethrening grease efanelekile kuzo zonke izinhlelo zokusebenza. I-grease ngayinye inokusebenza okulinganiselwe kanye nezimpawu. Amafutha aqukethe uwoyela wesisekelo, omkhulu kanye nezithasiselo. Ukuthembela amafutha kuvame ukuqukethe uwoyela we-petroleum base uhlanganiswe nensipho ethile yensimbi. Eminyakeni yamuva nje, kufakwe ama-organic kanye ne-innorganic kanye nama-innorganic kumafutha wesisekelo sokwenziwa. Ithebula 26 lifingqa ukwakheka kokugqwala okujwayelekile. Ithebula 26 I-Prisivator antioxidant anti-greprest ingcindezi esezingeni eliphezulu ye-calcium-based kanye ne-aluminium inokumelana namanzi amahle kakhulu, alungele izinhlelo zezimboni ezidinga ukuvikela ukungena komswakama. Ama-Lithium-based Greates asebenzisa okuningi futhi alungele izinhlelo zezimboni kanye nokuphela kwamasondo.
Amafutha e-Synthetic Aise, anjenge-EPERS, ama-organic ester kanye nama-silicones, lapho asetshenziswa ngabakhudlwana kanye nezithasiselo ezivame ukusetshenziswa, izinga lokushisa eliphakeme livame kakhulu kunokushisa okuphezulu kwamafutha kaphethiloli. Uhla lokushisa olusebenzayo lwamafutha we-zokwenziwa lusuka ku -73 ° C kuya ku-288 ° C. Okulandelayo izici ezijwayelekile zabakhudlwana ezisetshenziswa kakhulu ngamafutha asuselwa ku-petroleum. Ithebula 27
° C ° F ° C ° F
I-Lithium 193 380 121 250 Kuhle
I-Lithium Complex 260+ 500+ 149 300 ilungile
Composite aluminium base 249 480 149 300 okuhle kakhulu
I-calcium sulfonate 299 570 177 350 enhle kakhulu
I-Polyurea 260 500 149 300 Kuhle
Ukusetshenziswa kwe-polyure njengoba kukhulu kungenye yentuthuko ebaluleke kakhulu ensimini yokuthambisa iminyaka engaphezu kwengu-30. Amafutha e-polyurea akhombisa ukusebenza okuhle kakhulu ezinhlotsheni ezahlukahlukene zokunikeza, futhi ngesikhathi esifushane, sekuqashelwe njengebhola elinomthamo wangaphambi kokuthambisa. Izinga lokushisa eliphansi ngaphansi kwezimo zokushisa eziphansi, i-torque yokuqala ye-greese egcotshisiwe ibaluleke kakhulu. Amanye amafutha angasebenza kuphela ngokujwayelekile lapho i-haring isebenza, kepha izokwenza ukumelana ngokweqile kuze kube sekupheleni kokuthwala. Kweminye imishini emincane, kungenzeka ingaqali lapho izinga lokushisa liphansi kakhulu. Esimweni esisebenzayo esinjalo, kuyadingeka ukuthi amafutha anezici zokushisa okuphansi okuqala. Uma uhla lokushisa olusebenzayo lubanzi, ama-greate eyenziwe anezinzuzo ezisobala. Amafutha asakwazi ukwenza i-torque yokuqala futhi egijimayo ibe mincane kakhulu emazingeni okushisa aphansi ka -73 ° C. Kwezinye izimo, lokhu kuqina kwenza kangcono kunokuthambisa kulokhu. Iphuzu elibalulekile mayelana ne-grease ukuthi ukuqala kwe-torque akuyona umsebenzi wokuguquguquka kwamafutha noma ukusebenza okuphelele. I-torque yokuqala ifana nomsebenzi wokusebenza komuntu ngamunye wamafutha athile, futhi kunqunywa ngolwazi.
Ukushisa Okuphezulu Uhla lokushisa lwamafutha lunqunywa yiphoyinti lokudonsela amafutha ubukhulu kanye nokwakheka kwamafutha esisekelo. Ithebula 28 libonisa uhla lokushisa lwamafutha ngaphansi kwezimo ezahlukahlukene zamafutha. Ngemuva kweminyaka yezivivinyo ezinama-grease-lugcotshisiwe, izindlela zalo ezinamandla akhombisa ukuthi impilo yokuthambisa greatiatiatical iyonqunyelwa kuwo wonke amazinga okushisa angu-10. Isibonelo, uma impilo yenkonzo yamafutha emazingeni okushisa angama-90 ° C angamahora angama-2000, lapho izinga lokushisa likhuphuka liye ku-100 ° C, impilo yenkonzo incishiswa cishe amahora ayi-1000. Ngakolunye uhlangothi, ngemuva kwehlise izinga lokushisa libe ngu-80 ° C, impilo yenkonzo kulindeleke ukuthi ifinyelele amahora angama-4000.