Kusanthula kwa kutentha kochepa komanso kutentha kwambiri kwa mabearing opaka mafuta

Mafuta odzola nthawi zambiri amakhala oyenera kugwiritsidwa ntchito pa liwiro lotsika mpaka lapakati pomwe kutentha kwa bearing kuli pansi pa kutentha komwe mafuta amafunikira. Palibe mafuta oletsa kugwedezeka omwe ali oyenera kugwiritsidwa ntchito konse. Mafuta aliwonse amakhala ndi magwiridwe antchito ndi mawonekedwe ochepa. Mafuta amakhala ndi mafuta oyambira, chokhuthala ndi zowonjezera. Mafuta odzola nthawi zambiri amakhala ndi mafuta oyambira a petroleum okhuthala ndi sopo winawake wachitsulo. M'zaka zaposachedwa, zokhuthala zachilengedwe ndi zosapangidwa zakhala zikuwonjezedwa ku mafuta oyambira opangidwa. Gome 26 limafotokoza mwachidule kapangidwe ka mafuta wamba. Gome 26. Zosakaniza za Mafuta Oyambira a Grease Oil Thickener Additive Grease Mineral Oil Synthetic Hydrocarbon Ester Substance Perfluorinated Oil Silicone Lithium, Aluminium, Barium, Calcium ndi Compound Sopo Tinthu tating'onoting'ono topanda fungo (tosapangidwa) Guluu (dongo), carbon black, silica gel, PTFE sopo wopanda (organic) polyurea compound rust inhibitor dye tackifier metal passivator antioxidant anti-wear extreme pressure additive calcium-based and aluminium-based greases ali ndi kukana bwino kwa madzi, Oyenera kugwiritsidwa ntchito m'mafakitale omwe amafunika kupewa kulowa kwa chinyezi. Mafuta opangidwa ndi lithiamu amagwiritsidwa ntchito m'njira zosiyanasiyana ndipo ndi oyenera kugwiritsidwa ntchito m'mafakitale komanso m'mabearing a mawilo.
Mafuta oyambira opangidwa, monga ma ester, ma ester achilengedwe ndi ma silicone, akagwiritsidwa ntchito ndi zothina ndi zowonjezera zomwe zimagwiritsidwa ntchito nthawi zambiri, kutentha kwakukulu kogwirira ntchito nthawi zambiri kumakhala kokwera kuposa kutentha kwakukulu kogwirira ntchito kwa mafuta opangidwa ndi mafuta. Mafuta opangidwa ndi mafuta amatha kukhala -73°C mpaka 288°C. Izi ndi zizindikiro za zothina zomwe zimagwiritsidwa ntchito nthawi zambiri ndi mafuta opangidwa ndi mafuta. Gome 27. Zizindikiro za zothina zomwe zimagwiritsidwa ntchito ndi mafuta opangidwa ndi mafuta Thickeners Nthawi Yotsika Kutentha Kwambiri Kukana Madzi Pogwiritsa ntchito zothina zomwe zili mu Gome 27 ndi mafuta opangidwa ndi hydrocarbon kapena ester, kutentha kwakukulu kogwirira ntchito kumatha kuwonjezeredwa ndi pafupifupi 10°C.
°C °F °C °F
Lithiamu 193 380 121 250 yabwino
Lithium complex 260+ 500+ 149 300 yabwino
Maziko a aluminiyamu ophatikizika 249 480 149 300 abwino kwambiri
Calcium sulfonate 299 570 177 350 yabwino kwambiri
Polyurea 260 500 149 300 Yabwino
Kugwiritsa ntchito polyurea ngati chokhuthala ndi chimodzi mwa zinthu zofunika kwambiri pa ntchito yopaka mafuta kwa zaka zoposa 30. Mafuta a polyurea amasonyeza bwino kwambiri pa ntchito zosiyanasiyana zopaka mafuta, ndipo m'kanthawi kochepa, adziwika ngati mafuta oyambira kunyamula mafuta. Kutentha kochepa Pansi pa kutentha kochepa, mphamvu yoyambira ya mabearing opaka mafuta ndi yofunika kwambiri. Mafuta ena amatha kugwira ntchito bwino pokhapokha ngati bearing ikuyenda, koma imayambitsa kukana kwakukulu poyambira bearing. Mu makina ena ang'onoang'ono, sangayambe kutentha kwambiri. Mu malo ogwirira ntchito otere, mafuta amafunika kukhala ndi makhalidwe a kutentha kochepa poyambira. Ngati kutentha kogwirira ntchito kuli kwakukulu, mafuta opangidwa ali ndi ubwino woonekeratu. Mafuta amathabe kupangitsa kuti torque yoyambira ndi yothamanga ikhale yochepa kwambiri pa kutentha kochepa kwa -73°C. Nthawi zina, mafuta awa amagwira ntchito bwino kuposa mafuta opaka mafuta pankhaniyi. Mfundo yofunika kwambiri yokhudza mafuta ndi yakuti torque yoyambira sikutanthauza kuti mafuta ndi ofanana kapena kuti mafuta ndi otani. Mphamvu yoyambira imakhala ngati mphamvu yogwirira ntchito ya mafuta enaake, ndipo imatsimikiziridwa ndi zomwe zachitika.
Kutentha Kwambiri: Malire a kutentha kwakukulu kwa mafuta amakono nthawi zambiri amakhala chifukwa cha kukhazikika kwa kutentha ndi kukana kwa okosijeni kwa mafuta oyambira komanso kugwira ntchito kwa zoletsa okosijeni. Kutentha kwa mafuta kumatsimikiziridwa ndi malo otayira mafuta okhuthala ndi kapangidwe ka mafuta oyambira. Gome 28 likuwonetsa kutentha kwa mafuta pansi pa mikhalidwe yosiyanasiyana ya mafuta oyambira. Pambuyo pa zaka zambiri zoyesera ndi ma bearings odzola mafuta, njira zake zoyeserera zikuwonetsa kuti moyo wa mafuta odzola udzachepetsedwa ndi theka pa kuwonjezeka kulikonse kwa kutentha kwa 10°C. Mwachitsanzo, ngati moyo wa mafuta odzola pa kutentha kwa 90°C ndi maola 2000, kutentha kukakwera kufika pa 100°C, moyo wautumiki umachepetsedwa kufika pafupifupi maola 1000. Mosiyana ndi zimenezi, kutentha kukatsika kufika pa 80°C, moyo wautumiki ukuyembekezeka kufika maola 4000.