Man shafawa gabaɗaya ya dace da ƙanana zuwa matsakaicin aikace-aikacen saurin gudu inda zafin aiki na mai ɗaukar nauyi ya kasance ƙasa da iyakar zafin mai.Babu man shafawa mai hana gogayya da ya dace da duk aikace-aikace.Kowane maiko yana da iyakantaccen aiki da halaye.Man shafawa ya ƙunshi man tushe, mai kauri da ƙari.Man shafawa yawanci yana ƙunshe da mai tushe mai kauri da wani sabulun ƙarfe.A cikin 'yan shekarun nan, an ƙara ma'auni da inorganic thickeners zuwa roba tushe mai.Tebur na 26 ya taƙaita abubuwan da ke tattare da man shafawa.Table 26. Sinadaran na Man shafawa Base Oil Thickener Additive Man Ma'adinai Oil roba Hydrocarbon Ester Abun Perfluorinated Oil Silicone Lithium, Aluminum, Barium, Calcium da Compound Sabulu Unscented (inorganic) barbashi Manne (laka), carbon baki, silica gel-free gel, PT. (Organic) polyurea fili tsatsa inhibitor dye tackifier karfe passivator antioxidant anti-wear matsananci matsa lamba ƙari na calcium tushen da aluminum-tushen greases da kyau kwarai ruwa juriya, Dace da masana'antu aikace-aikace da bukatar hana danshi kutsawa.Lithium-tushen man shafawa suna da amfani da yawa kuma sun dace da aikace-aikacen masana'antu da maƙallan ƙarshen ƙafar ƙafa.
Roba tushe mai, kamar esters, Organic esters da silicones, lokacin da ake amfani da su tare da yawan amfani da thickeners da Additives, matsakaicin zafin jiki aiki yawanci mafi girma fiye da matsakaicin zafin aiki na tushen mai.Yanayin zafin aiki na man shafawa na roba na iya zama daga -73 ° C zuwa 288 ° C.Wadannan su ne gaba ɗaya halaye na masu kauri da aka saba amfani da su tare da tushen mai.Tebur 27. Gabaɗayan halaye na masu kauri da aka yi amfani da su tare da mai na tushen mai Masu kauri Na yau da kullun Matsakaicin Saukowa Matsakaicin Matsakaicin Zazzabi Ruwa Resistance Yin amfani da kauri a cikin Tebur 27 tare da hydrocarbon roba ko mai tushen ester, matsakaicin zafin jiki na aiki ana iya samun haɓaka ta kusan 10 ° C.
°C °F °C °F
Lithium 193 380 121 250 mai kyau
Lithium hadaddun 260+ 500+ 149 300 mai kyau
Haɗin aluminum tushe 249 480 149 300 kyau kwarai
Calcium sulfonate 299 570 177 350 yana da kyau
Polyurea 260 500 149 300 Mai kyau
Yin amfani da polyurea a matsayin mai kauri yana ɗaya daga cikin mahimman ci gaba a cikin filin mai fiye da shekaru 30.Man shafawa na polyurea yana nuna kyakkyawan aiki a cikin aikace-aikace iri-iri, kuma a cikin ɗan gajeren lokaci, an gane shi azaman mai ɗaukar ƙwallon ƙwallon ƙafa.Ƙarƙashin zafin jiki Ƙarƙashin yanayin ƙananan zafin jiki, ƙarfin farawa na man mai mai ɗaukar bearings yana da mahimmanci.Wasu man shafawa na iya aiki akai-akai ne kawai lokacin da abin ya shafa yana gudana, amma zai haifar da juriya mai yawa ga farkon ɗaukar.A wasu ƙananan inji, 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 ƙananan zafin jiki na farawa.Idan kewayon zafin aiki yana da faɗi, man shafawa na roba yana da fa'ida a bayyane.Man shafawa na iya sa ƙarfin farawa da gudu ya ƙanƙanta a ƙananan zafin jiki na -73 ° C.A wasu lokuta, waɗannan greases suna yin aiki mafi kyau fiye da lubricants a wannan batun.Muhimmiyar mahimmanci game da maiko shine cewa farawa mai ƙarfi ba dole ba ne aiki na daidaiton mai ko aikin gaba ɗaya.Matsakaicin farawa ya fi kama da aikin mutum ɗaya na takamaiman maiko, kuma an ƙaddara shi ta hanyar ƙwarewa.
Babban zafin jiki: Matsakaicin yawan zafin jiki na greases na zamani yawanci shine cikakken aiki na kwanciyar hankali na thermal da juriya na iskar shaka na tushen man fetur da tasiri na masu hana iskar shaka.Matsakaicin zafin jiki na maiko yana ƙaddara ta wurin raguwar mai mai maiko da abun da ke tattare da man tushe.Shafin 28 yana nuna yanayin zafin maiko a ƙarƙashin yanayi daban-daban na tushe mai.Bayan shekaru na gwaje-gwajen da aka yi da man shafawa, hanyoyin da za a iya amfani da su sun nuna cewa rayuwar mai mai za ta ragu da rabi don kowane karuwar 10 ° C a cikin zafin jiki.Misali, idan rayuwar sabis na maiko a zazzabi na 90 ° C shine sa'o'i 2000, lokacin da zafin jiki ya tashi zuwa 100 ° C, rayuwar sabis ɗin ta ragu zuwa kusan awanni 1000.Sabanin haka, bayan rage yawan zafin jiki zuwa 80 ° C, ana sa ran rayuwar sabis ya kai awanni 4000.
Lokacin aikawa: Juni-08-2020