Greasase na gabaɗaya ya dace da ƙananan aikace-aikacen hanzari inda aikin aiki na ɗaukar nauyin zafin rana yake ƙasa. Babu wani anti-friction mai girma mai girma ya dace da duk aikace-aikace. Kowane man shafawa yana da iyakantaccen aiki da halaye. Man shafawa ya ƙunshi mai na tushen tushe, thickener da ƙari. A ɗauke da man shafawa yawanci yana ƙunshe da man fetur na ɓarke tare da wani sabulu na ƙarfe. A cikin 'yan shekarun nan, na kwayoyin da inorganic an ƙara su zuwa mai da mai a cikin rudani. Table 26 Tattaunawa da abun da ake amfani da shi na hankula. Tebur 26. Sinadaran na man shafawa na man shafawa mai narkewa ma'adinan ma'adinai mai ɗumbin ruwa mai narkewa (yumɓu), carbon baki, ptfe sabulu, carbon, carbon Mai gabatarwa antioxidant anti-saka matsanancin ƙara haɓakar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ruwa da kuma manyaƙƙashiyoyi masu ruwa, dace don aikace-aikacen masana'antu waɗanda ke buƙatar hana zubar danshi. Manyan tushen Lithaium suna da amfani da yawa kuma sun dace da aikace-aikacen masana'antu da kuma ƙoshin ƙafafun ƙarshe.
Rynt Bassion mai, kamar matattun abubuwa da siliki, lokacin da aka yi amfani da su tare da matsakaiciyar yawan zafin mai na mai. Matsakaicin yawan zafin jiki na kayan aiki na iya zama daga -73 ° C zuwa 288 ° C. Wadannan sune jigon halayen maganganu da aka saba amfani dasu da mai-mai-tushen mai-tushen. Tebur 27
° C ° F ° C ° F
Lith 198 380 121 250
Cikakkun labaru 260+ 500+ 149 300 mai kyau
Baso mai 249 480 149 39
Al'ummu sulfonate 299 570 177 350 KYAU
Polyurea 260 500 149 300 mai kyau
Yin amfani da polyurea a matsayin mai kauri shine ɗayan mahimman ci gaba a fagen lubricating fiye da shekaru 30. Polyurea manya yana nuna kyakkyawan aiki a aikace-aikace iri-iri, kuma a cikin ɗan ɗan gajeren lokaci, ya zama sananne a matsayin ball yana ɗaukar pre-mai-mai-mai. Low zazzabi a karkashin yanayin zazzabi mai ƙarancin ƙasa, farawa na man shafawa mai bubar sa-da muhimmanci. Wasu man shafawa na iya yin aiki koyaushe lokacin da abin da ke gudana, amma zai haifar da matsanancin juriya har zuwa farkon abin. A wasu ƙananan ingaras, bazai fara farawa lokacin da yawan zafin jiki yake da ƙarancin ƙasa ba. A cikin irin wannan aikin aiki, ana buƙatar man shafawa yana da halayen ƙarancin zafin jiki. Idan kewayon aikin zafin jiki yana da fadi, manya mai haske yana da fa'idodi na yau da kullun. Man shafawa na iya sa farawa da gudummawar Torque ƙanana kaɗan a cikin zafin jiki na -73 ° C. A wasu halaye, waɗannan man shafawa suna da kyau fiye da maɓuɓɓuga a wannan batun. Muhimmin batun game da man shafawa shine cewa fara Torque ba lallai ba ne aikin man shafawa a daidaito ko aikin gaba ɗaya. Fara torque ya fi kama da aikin mutum na takamaiman man shafawa, kuma an ƙaddara ta kwarewa.
Babban zazzabi: Matsayin zazzabi na greases na zamani yawanci cikakken aiki ne na yanayin kwanciyar hankali da jurewar oxidation na mai da tasirin hadarin oxidation na ciki. Yawan zafin jiki na man gasase an ƙaddara shi ta hanyar faduwa daga m Thickener da kuma abun da ke ciki na mai. Tebur 28 yana nuna yawan zafin jiki na man shafawa a ƙarƙashin yanayin mai daban. Bayan shekaru na gwaje-gwajen tare da man shafawa-lubricated beings, hanyoyin da ya haifar da cewa za a lalata cewa lubricating mai gasasshen mai da yawa a cikin zazzabi. Misali, idan rayuwar sabis na man shafawa a zazzabi na 90 ° C shine awanni 2000, lokacin da zazzabi ya tashi zuwa kusan awanni 1000. Tattaunawa, bayan rage zafin jiki zuwa 80 ° C, rayuwar sabis tana kaiwa awanni 4000.
Lokaci: Jun-08-2020