Binciken yanayin zafi mai ƙarancin zafi da yanayin zafi mai yawa na bearings mai mai

Man shafawa gabaɗaya ya dace da aikace-aikacen ƙananan gudu zuwa matsakaici inda zafin aiki na bearing ɗin ya ƙasa da zafin da aka ƙayyade na man shafawa. Babu man shafawa mai hana gogayya da ya dace da duk aikace-aikacen. Kowane man shafawa yana da iyakataccen aiki da halaye. Man shafawa ya ƙunshi man tushe, mai kauri da ƙari. Man shafawa mai kauri yawanci yana ɗauke da man tushe na mai wanda aka kauri da wani sabulun ƙarfe. A cikin 'yan shekarun nan, an ƙara masu kauri na halitta da marasa tsari a cikin man tushe na roba. Tebur na 26 ya taƙaita abubuwan da ke cikin man shafawa na yau da kullun. Tebur na 26. Sinadaran Man shafawa Mai Kauri Mai Mai Gina Man Fetur Mai Ƙara Man Fetur Mai Ma'adinai Mai Sinadarin Hydrocarbon Ester Substance Perfluorinated Oil Silicone Lithium, Aluminum, Barium, Calcium da Sabulun Hadaka Barbashi marasa ƙanshi (marasa tsari) Manne (laka), carbon black, silica gel, PTFE sabulu mara sabulu (organic) polyurea compound tsatsa inhibitor dye tackifier ƙarfe passivator antioxidant anti-lalacewa matsanancin matsin lamba ƙarin mai tushen calcium da aluminum yana da kyakkyawan juriya ga ruwa, Ya dace da aikace-aikacen masana'antu waɗanda ke buƙatar hana kutsewar danshi. Man shafawa mai tushen lithium yana da amfani da yawa kuma ya dace da aikace-aikacen masana'antu da bearings na ƙafafun.
Man fetur na roba, kamar su esters, organic esters da silicones, idan aka yi amfani da su tare da masu kauri da ƙari da aka saba amfani da su, matsakaicin zafin aiki yawanci ya fi matsakaicin zafin aiki na mai mai tushen mai. Yanayin zafin aiki na man shafawa na roba na iya kasancewa daga -73°C zuwa 288°C. Ga halaye na gabaɗaya na masu kauri da aka saba amfani da su tare da man fetur. Tebur na 27. Halaye na gabaɗaya na masu kauri da ake amfani da su tare da man fetur Masu kauri Matsakaicin Faduwa Matsakaicin Zafin Jiki na Ruwa Yin amfani da masu kauri a Tebur na 27 tare da man hydrocarbon na roba ko na ester, ana iya cimma matsakaicin zafin aiki Ƙara da kusan 10°C.
°C °F °C °F
Lithium 193 380 121 250 mai kyau
Hadadden Lithium 260+ 500+ 149 300 mai kyau
Tushen aluminum mai haɗawa 249 480 149 300 mai kyau
Calcium sulfonate 299 570 177 350 mai kyau
Polyurea 260 500 149 300 Mai kyau
Amfani da polyurea a matsayin mai kauri yana ɗaya daga cikin manyan ci gaba a fannin shafawa na tsawon sama da shekaru 30. Man shafawa na polyurea yana nuna kyakkyawan aiki a aikace-aikacen ɗaukar nauyi iri-iri, kuma cikin ɗan gajeren lokaci, an gane shi a matsayin mai ɗaukar nauyi kafin ɗaukar nauyi. Ƙananan zafin jiki A ƙarƙashin yanayin zafi mai ƙarancin yawa, ƙarfin farawa na bearings mai mai yana da matuƙar muhimmanci. Wasu mai na iya aiki ne kawai lokacin da bearings ke aiki, amma zai haifar da juriya mai yawa ga farkon bearings. A wasu ƙananan injuna, ƙila ba zai fara ba lokacin da zafin jiki ya yi ƙasa sosai. A cikin irin wannan yanayin aiki, ana buƙatar man shafawa yana da halayen farawa da ƙarancin zafin jiki. Idan kewayon zafin aiki yana da faɗi, man shafawa na roba yana da fa'idodi bayyanannu. Man shafawa har yanzu yana iya sa ƙarfin farawa da gudana ya yi ƙanƙanta a ƙaramin zafin jiki na -73°C. A wasu lokuta, waɗannan man shafawa suna aiki mafi kyau fiye da man shafawa a wannan fanni. Muhimmin batu game da man shafawa shine cewa ƙarfin farawa ba lallai bane ya dogara da daidaiton man shafawa ko aiki gabaɗaya. Matsakaicin farawa yana kama da aikin mutum ɗaya na takamaiman man shafawa, kuma ana ƙaddara shi ta hanyar ƙwarewa.
Babban zafin jiki: Babban zafin jiki na man shafawa na zamani yawanci yana da alaƙa da daidaiton zafi da juriyar iskar shaka na man tushe da kuma ingancin masu hana iskar shaka. Ana tantance yanayin zafin mai ta hanyar faɗuwar mai mai kauri da kuma abun da ke cikin man tushe. Tebur na 28 yana nuna yanayin zafin mai a ƙarƙashin yanayi daban-daban na man tushe. Bayan shekaru na gwaje-gwaje da aka yi da bearings masu man shafawa, hanyoyinsa na gwaji sun nuna cewa rayuwar mai mai shafawa za ta ragu da rabi a kowace ƙaruwar zafin jiki na 10°C. Misali, idan tsawon rayuwar mai mai a zafin jiki na 90°C ya kai awanni 2000, lokacin da zafin jiki ya tashi zuwa 100°C, tsawon rayuwar mai zai ragu zuwa kimanin awanni 1000. Akasin haka, bayan rage zafin jiki zuwa 80°C, ana sa ran tsawon rayuwar mai zai kai awanni 4000.