Kuzora mafuta kunowanzo kukodzera kushandiswa kwekukurumidza kusvika pakati nepakati uko tembiricha yekushanda kwebearing iri pasi petembiricha yemafuta. Hapana mafuta ekudzivirira kupwanyika akakodzera kushandiswa kwese. Girazi rega rega rine mashandiro mashoma uye hunhu hushoma. Girazi rine mafuta epasi, chinyamuro uye zvinowedzerwa. Girazi rekuisa mafuta rinowanzo kuve nemafuta epasi peturu akakora nesipo yesimbi. Mumakore achangopfuura, mafuta ekugadzira organic neinorganic akawedzerwa kumafuta epasi ekugadzira. Tafura 26 inopfupikisa kuumbwa kwemafuta akajairika. Tafura 26. Zvimisikidzo zveGrease Base Oil Thickener Additive Grease Mineral Oil Synthetic Hydrocarbon Ester Substance Perfluorinated Oil Silicone Lithium, Aluminum, Barium, Calcium uye Compound Soap Unscented (inorganic) particles Glue (clay), carbon black, silica gel, PTFE soap-free (organic) polyurea compound rust inhibitor dye tackifier metal passivator antioxidant anti-wear extreme pressure additive calcium-based and aluminium-based greases ane simba rekudzivirira mvura, Akakodzera kushandiswa mumaindasitiri anoda kudzivirira kupinda kwehunyoro. Mafuta eLithium anoshandiswa kakawanda uye akakodzera kushandiswa mumaindasitiri uye mabheyaringi evhiri.
Mafuta epasi ekugadzira, akadai seesters, organic esters uye silicones, kana achishandiswa nemafuta anoshandiswa zvakanyanya uye anowedzera, tembiricha yepamusoro yekushandisa inowanzo kuve yakakwira kupfuura tembiricha yepamusoro yekushandisa yemafuta anoshandiswa nepetroleum. Tembiricha yekushanda yemafuta anoshandiswa inogona kubva -73°C kusvika 288°C. Izvi zvinotevera ndizvo hunhu hwemafuta anoshandiswa zvakanyanya nemafuta anoshandiswa nepetroleum. Tafura 27. Hunhu hwemafuta anoshandiswa zvakanyanya nemafuta anoshandiswa nepetroleum Thickeners Typical Donpping Point Maximum Temperature Resistance Water Uchishandisa mafuta anoshandiswa zvakanyanya muTafura 27 nemafuta anoshandiswa nehydrocarbon kana ester, tembiricha yepamusoro yekushandisa inogona kuwanikwa Wedzera neinenge 10°C.
°C °F °C °F
Lithium 193 380 121 250 yakanaka
Lithium complex 260+ 500+ 149 300 yakanaka
Hwaro hwearuminiyamu hwakasanganiswa 249 480 149 300 hwakanaka kwazvo
Calcium sulfonate 299 570 177 350 yakanaka kwazvo
Polyurea 260 500 149 300 Yakanaka
Kushandiswa kwepolyurea semuchina wekuomesa ndechimwe chezvinhu zvakakosha zvikuru mumunda wekuomesa kweanopfuura makore makumi matatu. Girisi rePolyurea rinoratidza kushanda kwakanaka mumhando dzakasiyana dzemabheari, uye munguva pfupi, rave kuzivikanwa sebhora rinoisa mafuta. Kupisa kwakaderera. Mumamiriro ekupisa kwakaderera, torque yekutanga yemabheari ane mafuta yakakosha zvikuru. Mamwe mafuta anogona kungoshanda zvakajairika kana bearing iri kushanda, asi anokonzera kuramba kwakanyanya kutanga kwebearing. Mune mimwe michina midiki, inogona kusatanga kana tembiricha yakaderera zvakanyanya. Munzvimbo yakadaro yekushanda, zvinodiwa kuti girisi ive nehunhu hwekupisa kwakaderera kutanga. Kana tembiricha yekushanda yakafara, girisi rekugadzira rine zvakanakira zviri pachena. Girisi rinogona kuita kuti torque yekutanga nekushanda ive diki kwazvo patembiricha yakaderera ye -73°C. Mune zvimwe zviitiko, magirisi aya anoita zviri nani pane mafuta mune izvi. Pfungwa yakakosha nezve grisi ndeyekuti torque yekutanga haisi basa remafuta akafanana kana kushanda kwemafuta. torque yekutanga yakafanana nebasa remunhu wega wega wegrisi chaiyo, uye inotsanangurwa neruzivo.
Kupisa kwakanyanya: Muganho wekupisa kwakanyanya kwemagirisi emazuva ano unowanzo kuve basa rakazara rekugadzikana kwekupisa uye kuramba kweokisijeni kweokisijeni yeokisijeni uye kushanda kwezvinodzivirira okisijeni. Kupisa kwemafuta kunotsanangurwa nekudonhedza kwechinhu chinosimbisa mafuta uye kuumbwa kweokisijeni. Tafura 28 inoratidza kupisa kwemafuta pasi pemamiriro akasiyana-siyana emafuta epasi. Mushure memakore ekuedza nemabheyaringi ane mafuta, nzira dzayo dzekuongorora dzinoratidza kuti hupenyu hwemafuta anozora huchaderedzwa nehafu pakuwedzera kwe10°C kwetembiricha. Semuenzaniso, kana hupenyu hwemafuta patembiricha ye90°C huri maawa 2000, kana tembiricha yakwira kusvika 100°C, hupenyu hwebasa hunoderedzwa kusvika maawa angangoita 1000. Kusiyana neizvi, mushure mekudzikisa tembiricha kusvika 80°C, hupenyu hwebasa hunotarisirwa kusvika maawa 4000.
Nguva yekutumira: Chikumi-08-2020