Munyika inonetsa yekusimbisa maindasitiri, Polytetrafluoroethylene (PTFE) chinhu chinokosheswa nekuda kwekusagadzikana kwayo kwemakemikari, kukweshana kwakaderera, uye kugona kushanda munzvimbo dzakasiyana-siyana dzekupisa. Zvisinei, kana mashandisirwo acho achinja kubva pamamiriro ezvinhu asingachinji kuenda kune anochinja-chinja—nekumanikidzwa kunochinja-chinja, tembiricha, uye kufamba-famba kunoramba kuripo—zvinhu chaizvo zvinoita kuti PTFE ive inobatsira zvinogona kukonzera matambudziko makuru einjiniya. Chinyorwa chino chinotarisa fizikisi iri shure kwemaitiro ePTFE munzvimbo dzinochinja-chinja uye chinoongorora nzira dzekugadzira dzakakura, dzakasimbiswa dzinoita kuti ishandiswe zvakanaka mukushandiswa kwakakosha kubva mundege kuenda kumagetsi epamusoro.
Dambudziko Guru: Hunhu hwePTFE huri kufamba
PTFE haisi elastomer. Maitiro ayo kana iri pasi pekumanikidzwa uye tembiricha akasiyana zvakanyanya nezvinhu zvakaita seNBR kana FKM, izvo zvinoda nzira yakasiyana yekugadzira. Matambudziko makuru mu dynamic sealing ndeaya:
Kuyerera Kwechando (Kuyerera Kwemvura):PTFE inoratidza katsika kekukanganisika kwepurasitiki kana ichimanikidzwa nemagetsi kwenguva refu, chiitiko chinozivikanwa sekuti cold flow kana creep. Muchisimbiso chinoshanduka, kumanikidzwa nguva dzose nekukweshana zvinogona kukonzera kuti PTFE ikanganisika zvishoma nezvishoma, zvichikonzera kurasikirwa nesimba rekutanga rekuvhara (mutoro) uye, pakupedzisira, kutadza kwekuvhara.
Modulus Yakadzika Yakadzika:PTFE chinhu chakapfava zvishoma uye hachina kuomarara. Kusiyana neO-ring yerabha inogona kudzokera kuchimiro chayo chepakutanga mushure mekushanduka, PTFE ine kupora kushoma. Mumamiriro ezvinhu ekumanikidzwa nekukurumidza kana kushanduka kwekushisa, kusagadzikana uku kunogona kudzivirira chisimbiso kuti chisarambe chichibata nzvimbo dzinovharirwa.
Mhedzisiro yekuwedzera kwekupisa:Midziyo inoshanduka-shanduka inowanzosangana nekuchinja kwakakosha kwekupisa. PTFE ine chiyero chakakwira chekuwedzera kwekupisa. Mukuchinja kwekupisa kwakanyanya, chisimbiso chePTFE chinokura, zvichigona kuwedzera simba rekuvhara. Painotonhora, inodhonza, izvo zvinogona kuvhura mukaha uye kukonzera kubuda kwemvura. Izvi zvinowedzerwa nekuwedzera kwakasiyana kwekupisa kwechisimbiso chePTFE neimba/mugodhi wesimbi, zvichichinja nzvimbo yekushanda.
Pasina kugadzirisa hunhu uhwu hwezvinhu, chisimbiso chePTFE chaisazova chakavimbika mumabasa anochinja-chinja.
Ⅱ. Mhinduro dzeUinjiniya: Maitiro ekugadzira nekuchenjera pakuderedza miganhu yezvinhu
Mhinduro yeindasitiri kumatambudziko aya haisi yekuramba PTFE asi kuiwedzera kuburikidza nekugadzira michina kwakangwara. Chinangwa ndechekupa simba rekuvhara rakavimbika uye risingaperi iro PTFE yoga isingakwanise kuchengetedza.
1. Zvisimbiso Zvinoshandiswa Nesimba reChirimo: Mwero weGoridhe weDynamic Duty
Iyi ndiyo mhinduro inoshanda zvikuru uye inoshandiswa zvakanyanya pazvisimbiso zvePTFE zvinoshanduka. Chisimbiso chine simba rechitubu chinosanganisira jekete rePTFE (kana imwe polymer) inofukidza chisimbiso chesimbi.
Mashandiro Ainoita: Chitubu chinoshanda senzvimbo inogara iripo, ine simba guru. Chinoramba chichisundira muromo wePTFE kunze uchipesana nepamusoro pechisimbiso. Sezvo bhachi rePTFE richipfeka kana kuti richiyerera nekutonhora, chitubu chinokura kuti chidzore, chichichengetedza mutoro wekuvharwa kwenguva refu mukati menguva yese yechisimbiso.
Zvakanakira: Mashandisirwo ane kumanikidzwa kunokurumidza, tembiricha yakafara, mafuta mashoma, uye uko kudonha kwemvura kwakaderera kwakakosha. Mhando dzechitubu dzakajairika (cantilever, helical, canted coil) dzinosarudzwa zvichienderana nezvinodiwa zvekumanikidzwa uye kukweshana.
2. Zvinhu Zvakasanganiswa: Kuvandudza PTFE kubva Mukati
PTFE inogona kusanganiswa nezvinhu zvakasiyana-siyana zvinozadza kuti ivandudze hunhu hwayo hwemakanika. Zvinhu zvinozadza zvakajairika zvinosanganisira girazi fiber, kabhoni, graphite, bronze, uye MoS₂.
Mashandiro Azvo: Izvi zvinozadza zvinoderedza kuyerera kwemvura inotonhora, zvinowedzera kusakara, zvinovandudza kupisa, uye zvinowedzera simba rekudzvanya rePTFE yechigadziko. Izvi zvinoita kuti chisimbiso chigadzikane zvakanyanya uye chikwanise kutsungirira mamiriro ekukwesha.
Zvakanakira: Kugadzirisa mashandiro echisimbiso zvinoenderana nezvinodiwa. Semuenzaniso, zvinozadza kabhoni/grafiti zvinowedzera kunyorova uye kusakara, nepo zvinozadza bronze zvichivandudza kufambisa kwekupisa uye kugona kutakura mutoro.
3. Magadzirirwo eV-Ring: Kuvhara Axial Zviri Nyore Uye Zvinoshanda
Kunyange zvazvo isiri iyo yekutanga radial shaft seal, maV-rings ePTFE-based akanakira mashandisirwo e dynamic axial.
Mashandiro Azvo: MaV-rings akawanda akabatanidzwa pamwe chete. Kudzvanywa kweaxial kunoshandiswa panguva yekubatanidza kunoita kuti miromo yemhete ikure nemwaranzi, zvichigadzira simba rekuvhara. Dhizaini yacho inopa mukana wekuzvitsiva nekupfekwa.
Zvakanakira: Kudzivirira mabheringi ekutanga kubva mukusvibiswa, kushanda sechikwenya-kwenya kana muromo weguruva, uye kubata kufamba kweaxial.
Ⅲ. Rondedzero Yenyu Yekugadzira Yekusarudza Chisimbiso chePTFE Chinoshanduka
Kuti usarudze dhizaini chaiyo yechisimbiso chePTFE, nzira yakarongeka inokosha. Usati wabvunza mutengesi wako, unganidza ruzivo urwu rwakakosha rwekushandisa:
Profile yeDzvinyiriro: Kwete kudzvanyirira kwakanyanya chete, asiwo huwandu (min/max), frequency yekutenderera, uye mwero wekuchinja kwedzvinyiriro (dP/dt).
Kureba kweTembiricha: Tembiricha shoma uye yepamusoro yekushanda, pamwe nekumhanya kwematanho etembiricha.
Rudzi rweKufamba Kwesimba: Kutenderera, kushanduka-shanduka, kana kudzoka? Zvinosanganisira kumhanya (RPM) kana frequency (kutenderera/miniti).
Midhiya: Chii chinonzi mvura kana gasi chiri kuvharwa? Kuenderana kwacho ndiko kwakakosha.
Mwero Unobvumidzwa Wekudonha Mvura: Tsanangura huwandu hwemvura inodonha mvura hunogamuchirwa (semuenzaniso, cc/hr).
Zvinhu Zvinoshandiswa Pahurongwa: Chii chinonzi shaft nezvinhu zvinoiswa padzimba? Kuomarara kwazvo uye kupenya kwazvo kwakakosha pakupfekwa.
Zvinhu Zvinokonzera Matambudziko: Kuvapo kwezvinosvibisa zvinokuvadza, kusvibiswa neUV, kana zvimwe zvinhu zvekunze.
Mhedziso: Dhizaini Yakakodzera Yekuchinja Kunoda Zvinhu
PTFE inoramba iri chinhu chinoshamisa chekuvhara zvakatipoteredza zvakaoma. Chinokosha pakubudirira chiri mukubvuma miganhu yayo uye kushandisa mhinduro dzakasimba dzeinjiniya kuti dzikunde. Nekunzwisisa misimboti iri shure kwezvisimbiso zvinopa simba muchirimo, zvinhu zvakasanganiswa, uye geometries chaiyo, mainjiniya vanogona kuita sarudzo dzakagadzirwa neruzivo dzinovimbisa kuvimbika kwenguva refu. KuYokey, isu tine hunyanzvi mukushandisa misimboti iyi kugadzira mhinduro dzekuvhara dzakarurama. Hunyanzvi hwedu huri mukubatsira vatengi kufamba mukuchinjana uku kwakaoma kusarudza kana kugadzira chisimbiso chinoshanda nenzira inofanotaurwa pasi pemamiriro ezvinhu anonetsa zvikuru.
Mune application inonetsa here yekusimbisa dynamic sealing? Tipeiwo ma parameter enyu, uye timu yedu yeinjiniya ichapa ongororo yehunyanzvi uye kurudziro yechigadzirwa.
Nguva yekutumira: Mbudzi-19-2025