Kwihlabathi elinzima lokutywinwa kwemizi-mveliso, iPolytetrafluoroethylene (PTFE) yinto exatyiswayo ngenxa yokumelana kwayo okungaqhelekanga kweekhemikhali, ukungqubana okuphantsi, kunye nokukwazi ukusebenza kumanqanaba obushushu abanzi. Nangona kunjalo, xa usetyenziso lusuka kwiimeko eziguquguqukayo ukuya kwiimeko eziguquguqukayo—ngoxinzelelo oluguquguqukayo, amaqondo obushushu, kunye nokuhamba okuqhubekayo—iimpawu ezenza iPTFE ibe luncedo zinokuzisa imingeni ebalulekileyo yobunjineli. Eli nqaku lijonga kwifiziksi engasemva kokuziphatha kwePTFE kwiindawo eziguquguqukayo kwaye liphonononga amaqhinga oyilo avuthiweyo, aqinisekisiweyo avumela ukusetyenziswa kwayo ngempumelelo kwizicelo ezibalulekileyo ukusuka kwi-aerospace ukuya kwiinkqubo zeemoto ezisebenzayo kakhulu.
Ⅰ. Umngeni oPhambili: Iimpawu zezinto zePTFE ezishukumayo
I-PTFE ayisiyo i-elastomer. Indlela esebenza ngayo phantsi koxinzelelo kunye nobushushu yahlukile kakhulu kwizinto ezifana ne-NBR okanye i-FKM, nto leyo efuna indlela eyahlukileyo yoyilo. Imingeni ephambili ekutywinweni okuguquguqukayo yile:
Ukuhamba Komkhuhlane (Ukuhamba Komoya):I-PTFE ibonisa ukuthambekela kokuguquguquka ngokweplastiki phantsi koxinzelelo oluqhubekayo loomatshini, into eyaziwa ngokuba yi-cold flow okanye i-creep. Kwi-dynamic seal, uxinzelelo oluqhubekayo kunye nokungqubana kunokubangela ukuba i-PTFE iguquke kancinci, nto leyo ekhokelela ekulahlekelweni kwamandla okuqala okutywina (umthwalo) kwaye, ekugqibeleni, ukungaphumeleli kwetywina.
Imodulus eNcinci ePhantsi:I-PTFE yinto ethambileyo kwaye ithambile kancinci. Ngokungafaniyo neringi ye-O-ring yerabha enokubuyela kwimo yayo yokuqala emva kokuguquka, i-PTFE inokubuyiselwa okuncinci. Kwiimeko zokujikeleza koxinzelelo ngokukhawuleza okanye ukuguquguquka kobushushu, oku kuqina okungekuhle kunokuthintela isitywina ukuba singagcini unxibelelwano oluqhubekayo neendawo zokutywina.
Iziphumo Zokwanda Kobushushu:Izixhobo ezitshintshayo zihlala zihlangabezana nemijikelo yobushushu ebalulekileyo. I-PTFE inomlinganiselo ophezulu wokwanda kobushushu. Kumjikelo wobushushu obuphezulu, isitywina se-PTFE siyanda, nto leyo enokwandisa amandla okuvala. Xa sipholile, siyancipha, nto leyo enokuvula umsantsa kwaye ibangele ukuvuza. Oku kuqiniswa ngamanqanaba ahlukeneyo okwanda kobushushu besitywina se-PTFE kunye nendlu/i-shaft yesinyithi, nto leyo etshintsha indlela yokusebenza.
Ngaphandle kokujongana nezi mpawu zezinto ezibonakalayo, isitywina se-PTFE esilula besingayi kuthenjwa kwimisebenzi eguquguqukayo.
Ⅱ. Izisombululo zoBunjineli: Indlela uYilo oluLungileyo oluhlawulela ngayo imida yezinto eziphathekayo
Impendulo yoshishino kwezi ngxaki ayikokwala i-PTFE kodwa kukuyiphucula ngoyilo olukrelekrele loomatshini. Injongo kukubonelela ngamandla okuvala azinzileyo nanokuthenjwa angenakukwazi ukugcinwa yi-PTFE yodwa.
1. Izitywina Ezinamandla Entwasahlobo: Umgangatho Wegolide Womsebenzi Oguqukayo
Esi sesona sisombululo sisebenzayo nesisetyenziswa kakhulu kwiiseal ze-PTFE ezitshintshatshintshayo. Iseal enikwe amandla entwasahlobo inejakethi ye-PTFE (okanye enye i-polymer) egquma ispring yesinyithi.
Indlela Esebenza Ngayo: Intwasahlobo isebenza njengomthombo wamandla ohlala uhleli, onamandla aphezulu. Iqhubeka ityhala umlomo we-PTFE ngaphandle ngokuchasene nomphezulu wokutywina. Njengoko ijakethi ye-PTFE inxiba okanye ifumana ukuhamba okubandayo, intwasahlobo iyakhula ukuze ihlawule, igcine umthwalo wokutywina ohlala uhleli kuyo yonke ixesha lokusebenza kwetywina.
Eyona ifanelekileyo: Ukusetyenziswa ngemijikelo yoxinzelelo olukhawulezayo, amazinga obushushu abanzi, ukuthambisa okuphantsi, kunye nokuba izinga lokuvuza liphantsi kakhulu kubalulekile. Iintlobo zentwasahlobo eziqhelekileyo (i-cantilever, i-helical, i-canted coil) zikhethwa ngokusekelwe kwiimfuno ezithile zoxinzelelo kunye nokungqubana.
2. Izinto ezidityanisiweyo: Ukuphucula i-PTFE ngaphakathi
I-PTFE inokuhlanganiswa ngee-fillers ezahlukeneyo ukuphucula iimpawu zayo zoomatshini. Ii-fillers eziqhelekileyo ziquka i-glass fiber, i-carbon, i-graphite, i-bronze, kunye ne-MoS₂.
Indlela Esebenza Ngayo: Ezi zihluzi zinciphisa ukuhamba kobushushu, zonyusa ukumelana nokuguguleka, ziphucula ukuhanjiswa kobushushu, kwaye zonyusa amandla okucinezelwa kwesiseko se-PTFE. Oku kwenza isitywina sizinze ngakumbi kwaye sikwazi ukumelana neemeko ezirhabaxa.
Eyona ilungele: Ukulungisa ukusebenza kwetywina ngokweemfuno ezithile. Umzekelo, izizalisi zekhabhoni/igrafiti zonyusa ukutyeba kunye nokumelana nokuguguleka, ngelixa izizalisi zebronze ziphucula ukuhanjiswa kobushushu kunye nomthamo wokuthwala umthwalo.
3. Uyilo lwe-V-Ring: Ukutywina kwe-Axial okulula nokusebenzayo
Nangona ingeyona i-radial shaft seal ephambili, ii-V-rings ezisekelwe kwi-PTFE zilungile kakhulu kwizicelo ze-axial eziguqukayo.
Indlela Esebenza Ngayo: Iiringi ezininzi ze-V zihlanganiswe ndawonye. Uxinzelelo lwe-axial olusetyenziswa ngexesha lokuhlanganiswa lubangela ukuba imilebe yeringi yande ngemitha, nto leyo edala amandla okuvala. Uyilo lubonelela ngesiphumo esizihlawulelayo xa zigugile.
Eyona ifanelekileyo: Ukukhusela iibheringi eziphambili ekungcolisweni, ukusebenza njengesikrwela esilula okanye imilebe yothuli, kunye nokuphatha intshukumo ye-axial.
Uluhlu lwakho lokujonga uyilo lokukhetha i-Dynamic PTFE Seal
Ukuze ukhethe uyilo olufanelekileyo lwe-PTFE seal, indlela ecwangcisiweyo ibalulekile. Ngaphambi kokubonisana nomthengisi wakho, qokelela le datha ibalulekileyo yesicelo:
Iprofayili yoxinzelelo: Ayisiyongxinzelelo ephezulu kuphela, kodwa noluhlu (umzuzu/ubuninzi), umjikelo ophindaphindayo, kunye nesantya sotshintsho loxinzelelo (dP/dt).
Uluhlu lwamaqondo obushushu: Ubuncinci kunye nobukhulu bobushushu obusebenzayo, kunye nesantya somjikelo wamaqondo obushushu.
Uhlobo lweNtshukumo eDynamic: Ukujikeleza, ukushukuma, okanye ukuphindaphinda? Bandakanya isantya (RPM) okanye i-frequency (imijikelo/umzuzu).
Imidiya: Loluphi ulwelo okanye igesi oluvalwayo? Ukuhambelana kubalulekile.
Izinga lokuvuza eliVumelekileyo: Chaza ukuvuza okuphezulu okwamkelekileyo (umz., cc/hr).
Izinto zeNkqubo: Zithini izikhonkwane kunye nezinto zokuhlala? Ubunzima bazo kunye nokugqitywa komphezulu kubalulekile ekugugeni.
Izinto Ezichaphazela Ukusingqongileyo: Ukubakho kwezinto ezingcolisayo ezirhabaxa, ukuvezwa yi-UV, okanye ezinye izinto zangaphandle.
Isiphelo: Uyilo oluLungileyo lweDynamics eziBalulekileyo
I-PTFE ihlala iyinto ebalaseleyo yokutywina kwiindawo ezinzima. Isitshixo sempumelelo sikukuqonda imida yayo nokusebenzisa izisombululo zobunjineli eziqinileyo ukuze ziyoyise. Ngokuqonda imigaqo engasemva kwezitywina ezisebenza ngamandla entwasahlobo, izixhobo ezidityanisiweyo, kunye nejometri ezithile, iinjineli zinokwenza izigqibo ezinolwazi eziqinisekisa ukuthembeka kwexesha elide. Apha eYokey, sigxile ekusebenziseni le migaqo ukuphuhlisa izisombululo zokutywina ezichanekileyo. Ubuchule bethu busekuncedeni abathengi ukuba bahambe kwezi zivumelwano zinzima ukukhetha okanye ukuyila isitywina esisebenza ngendlela eqikelelweyo phantsi kweemeko eziguquguqukayo ezifuna amandla.
Ngaba unesicelo sokuvala esinzima nesinobunzima? Sinike iiparameter zakho, kwaye iqela lethu lobunjineli liya kubonelela ngohlalutyo lobuchwephesha kunye nengcebiso yemveliso.
Ixesha leposi: Novemba-19-2025