Ukuthanjiswa kwegrisi kulungele ukusetyenziswa kwesantya esisezantsi ukuya esiphakathi apho ubushushu bokusebenza bebheringi bungaphantsi komlinganiselo weqondo lobushushu bomlinganiselo wegrisi.Akukho grisi echasene ne-friction efanelekileyo kuzo zonke izicelo.Igrisi nganye inomsebenzi olinganiselweyo kunye neempawu.Igrisi iqulethe i-oyile yesiseko, i-thickener kunye ne-additives.Ukuthwala igrisi ngokuqhelekileyo kuqulethe i-oyile yesiseko se-petroleum ejiyelwe ngesepha ethile yesinyithi.Kwiminyaka yakutshanje, i-organic and inorganic thickeners yongezwe kwi-oyile yesiseko sokwenziwa.Uluhlu lwama-26 lushwankathela ukubunjwa kweegrisi eziqhelekileyo.Itheyibhile 26. Izithako zeGrisi ye-Oli ye-Oli eThickener Additive Grease Mineral Oil Synthetic Hydrocarbon Ester Substance Perfluorinated Oil Silicone Lithium, iAluminiyam, iBarium, iCalcium kunye neCompound Sesepha engavumbanga (inorganic) amasuntswana eGlue (udongwe), icarbon emnyama, isilica gel-free, i-PTFE (organic) i-polyurea compound rust inhibitor dye tackifier metal passivator antioxidant anti-wear pressure additive additive calcium-based kunye ne-aluminium-based greases inokuxhathisa okugqwesileyo kwamanzi, Ifanelekile kwizicelo zemizi-mveliso ezifuna ukuthintela ukungena kwamanzi.Iigrisi ezisekelwe kwi-lithium zisetyenziselwa izinto ezininzi kwaye zifanelekile kwizicelo zemizi-mveliso kunye neebheringi zokuphela kwamavili.
I-oyile ezisisiseko zokwenziwa, ezifana ne-esters, i-esters ye-organic kunye ne-silicones, xa zisetyenziswa kunye ne-thickeners esetyenziswa ngokuqhelekileyo kunye ne-additives, ubushushu obuphezulu bokusebenza buhlala buphezulu kunobushushu bokusebenza obuphezulu be-oyile esekelwe kwi-petroleum.Uluhlu lobushushu obusebenzayo lwegrisi yokwenziwa lunokusuka ku-73°C ukuya kuma-288°C.Ezi zilandelayo ziimpawu eziqhelekileyo zee-thickeners ezisetyenziswa rhoqo nge-oyile esekwe kwi-petroleum.Itheyibhile 27. Iimpawu eziqhelekileyo zee-thickeners ezisetyenziswa nge-oyile esekelwe kwi-petroleum i-Thickeners Eqhelekileyo Yokulahla Indawo Yokulahla Ubuninzi Ukumelana naManzi Ngokusebenzisa i-thickeners kwi-Table 27 ene-synthetic hydrocarbon okanye i-oyile e-ester-based, ubuninzi bokushisa bokusebenza bunokufezekiswa Ukunyuka malunga ne-10 ° C.
°C °F °C °F
Lithium 193 380 121 250 elungileyo
Lithium complex 260+ 500+ 149 300 elungileyo
Isiseko se-aluminiyam ehlanganisiweyo 249 480 149 300 egqwesileyo
Calcium sulfonate 299 570 177 350 ebalaseleyo
I-Polyurea 260 500 149 300 Elungileyo
Ukusetyenziswa kwe-polyurea njenge-thickener yenye yezona zinto zibalulekileyo zophuhliso kwintsimi yokuthambisa iminyaka engaphezu kwama-30.Igrisi yePolyurea ibonisa ukusebenza okugqwesileyo kwiintlobo ngeentlobo zezicelo zokuthwala, kwaye ngexesha elifutshane, sele iqatshelwe njengebhola ethwele i-lubricant yangaphambili.Ubushushu obuphantsi Phantsi kweemeko zobushushu obuphantsi, i-torque yokuqala yeebheringi ezithanjiswe ngegrisi ibaluleke kakhulu.Enye igrisi inokusebenza ngokuqhelekileyo kuphela xa ukuthwala kusebenza, kodwa kuya kubangela ukuxhathisa okugqithisileyo ekuqaleni kokuthwala.Kwabanye oomatshini abancinci, isenokungaqali xa iqondo lobushushu lisezantsi kakhulu.Kwimeko enjalo yokusebenza, kuyafuneka ukuba igrisi ineempawu zobushushu obuphantsi.Ukuba uluhlu lweqondo lokushisa olusebenzayo lubanzi, igrisi yokwenziwa ineenzuzo ezicacileyo.Igrisi isenokwenza itorque yokuqala kunye nokubaleka ibencinci kakhulu kubushushu obuphantsi obuyi -73°C.Kwezinye iimeko, la mafutha asebenza ngcono kunezithambiso kulo mba.Inqaku elibalulekileyo malunga negrisi kukuba ukuqala kwetorque ayingomsebenzi wokuhambelana kwegrisi okanye ukusebenza ngokubanzi.Ukuqalisa i-torque kufana nomsebenzi womntu ngamnye wegrisi ethile, kwaye imiselwa ngamava.
Ukushisa okuphezulu: Umda wokushisa ophezulu wegrisi zanamhlanje ngokuqhelekileyo ngumsebenzi obanzi wokuzinza kwe-thermal kunye nokumelana ne-oxidation ye-oyile yesiseko kunye nokusebenza kwe-oxidation inhibitors.Uluhlu lweqondo lokushisa lwegrisi luchongwa yindawo yokulahla i-grease thickener kunye nokubunjwa kweoli yesiseko.Itheyibhile ye-28 ibonisa uluhlu lobushushu begrisi phantsi kweemeko ezahlukeneyo zeoyile.Emva kweminyaka yovavanyo ngeebheringi ezifakwe igrisi, iindlela zayo zobuchule zibonisa ukuba ubomi begrisi yokuthambisa buya kuba ngesiqingatha rhoqo nge-10°C yokwanda kobushushu.Ngokomzekelo, ukuba ubomi benkonzo yegrisi kwiqondo lokushisa lama-90 ° C yiyure ezingama-2000, xa izinga lokushisa liphakama ukuya kwi-100 ° C, ubomi benkonzo buyancipha ukuya kwiiyure ezingama-1000.Ngakolunye uhlangothi, emva kokunciphisa izinga lokushisa ukuya kwi-80 ° C, ubomi benkonzo kulindeleke ukuba bufikelele kwiiyure ezingama-4000.
Ixesha lokuposa: Jun-08-2020