Kunyangwe zvingaita sezvidiki, chinhu cheO-ring chevharuvhu chakakosha zvikuru. Chinhu ichi chinogona kuona kuti chisimbiso chinotsungirira tembiricha here. Chinopawo chisimbiso simba remakemikari, uye mamwe marudzi erabha anoenderana nemvura dzakasiyana. Zvinhu zviviri zvakajairika zvemavharuvhu ebhora echokwadi iViton neEPDM.

Viton (iri pamufananidzo uri kurudyi) irabha yakagadzirwa ine simba rekudzivirira kupisa uye makemikari. EPDM inomiririra Ethylene Propylene Diene Monomer uye ine zvinhu zvayo zvinoita kuti ive chinhu chinozivikanwa zvikuru cheO-ring. Pakuenzanisa Viton neEPDM, zvinhu zvakawanda zvinofanirwa kutariswa: kushivirira kupisa, kushandira pamwe kwemakemikari, uye mutengo. Verenga kuti uwane kuenzanisa kwakazara.

Zvisimbiso zverabha zveEPDM
Rabha yeEPDM (Rabha yeEPDM() irabha yakaoma uye isingadhuri ine mashandisirwo akasiyana-siyana. Inowanzo shandiswa pakudzivirira mvura padenga nekuti EPDM inovhara zvakanaka. Inoshandiswawo pakuisa mafiriji nekuti inovharidzira uye ine simba rekudzivirira kupisa rakaderera. Kunyanya, EPDM inoshanda zvakanaka pakupisa kwe -49F kusvika 293F (-45C kusvika 145C), zvichiita kuti ive yakakodzera kushandiswa pakupisa kwese.

Kunyange hazvo marabha mazhinji asingapindi tembiricha yepamusoro, mashoma chete ndiwo anogona kubata tembiricha yakaderera seEPDM. Izvi zvinoita kuti ive sarudzo yekutanga kune chero munhu anoedza kuvhara munzvimbo dzinotonhora kana nezvinhu zvinotonhora. True Union Ball Valve ineEPDM Yakasimbiswa O-RingsMashandisirwo akajairika eEPDM anosanganisira kuputira magetsi, machira edziva, mapombi, zvinhu zvinounganidza ma solar panel, ma O-rings, nezvimwewo.

Pamusoro pekukwanisa kutsungirira tembiricha zvakanyanya, EPDM ine simba guru rekudzivirira makemikari. Izvi zvinosanganisira mvura inopisa, utsi, sipo, caustic potash solutions, sodium hydroxide solutions, silicone oil/grease, nezvimwe zvakawanda zvine acids nemakemikoro. Hazvina kukodzera kushandiswa nemafuta emaminerari akadai semafuta ekuzora, mafuta kana mafuta. Kuti uwane makemikari anoenderana neEPDM, tinya pano. Hunhu uhwu hunoshamisa, pamwe chete nemutengo wayo wakaderera, hunoita kuti EPDM ive chinhu chinozivikanwa zvikuru chekuvhara.

Zvisimbiso zveViton
Viton irabha yakagadzirwa uye fluoropolymer elastomer. "Fluoropolymer" zvinoreva kuti chinhu ichi hachina simba rakawanda rekugadzirisa zvinhu, maasidhi uye mabhesi. Izwi rekuti "elastomer" rinogona kuchinjwa ne "rabha". Hatizokurukure musiyano uripo pakati pe elastomer nerabha pano, asi tichakurukura chinoita kuti Viton ive yakakosha. Chinhu ichi chinowanzoonekwa neruvara rwegirini kana brown, asi chinonyanya kusiyanisa irwo rudzi rwayo. Huremu hweViton hwakakwira zvakanyanya kupfuura mhando zhinji dzerabha, zvichiita kuti Viton seal ive imwe yedzakasimba.

Viton inogona kushivirira tembiricha yakakura kubva pa -4F kusvika 410F (-20C kusvika 210C). Tembiricha dzakanyanya dzinogona kumiriswa neViton dzinoita kuti ive yakakodzera kushandiswa tembiricha yepamusoro. Viton inowanzo shandiswa mumaO-rings, magirovhosi asingapindi makemikari nezvimwe zvigadzirwa zvakaumbwa kana zvakaburitswa. MaO-rings akagadzirwa neViton akanakira kudhivha scuba, mainjini emotokari uye mavharuvhu akasiyana-siyana.

Kana zvasvika pakusagona kushandiswa nemakemikari, Viton haina anoenzana nayo. Inodzivirira ngura kubva mumhando dzakasiyana dzemvura nemakemikoro kupfuura chero elastomer isina fluorinated. Kusiyana neEPDM, Viton inoenderana nemafuta, mafuta, mafuta uye akawanda ma inorganic acids. Inodzivirirawo zvakanyanya kumanikidzwa, oxidation yemhepo, chiedza chezuva, mamiriro ekunze, mafuta emota ane oxygen, aromatics, fungi, mold, nezvimwewo. Inodzivirirawo zvakanyanya kutsva kupfuura mamwe ma rabha mazhinji. Verenga zvakawanda nezvezvinofanira kuitwa uye zvisingafaniri kuitwa nemakemikari eViton.

Dambudziko guru neViton mutengo wayo. Mukugadzira, inodhura kanenge ka8 kugadzira zvinhu zvakafanana neEPDM. Pakutenga chigadzirwa chine zvinhu zverabha zvishoma chete, mutengo wacho ungasasiyana zvakanyanya. Asi kana uchiraira zvakawanda, unogona kutarisira kuti zvikamu zveViton zvinodhura zvakanyanya kupfuura EPDM.

Zvisimbiso zveViton neEPDM
Chati yeRabha yeViton vs EPDM Sealing

Saka ndechipi chinhu chakanakisa? Mibvunzo iyi haina kururama zvachose. Zvinhu zvese izvi zvine mashandisirwo azvo chaiwo pazvinonyatsokodzera, saka zvese zvinoenderana nebasa razvichaita. C yeduMavharuvhu Ekutarisa Mabhora ePVCuye maVhuru eCPVC Swing Check anowanikwa neViton seals kana EPDM seals. MaVhuru aya akagadzirwa neO-rings dzakaiswa muzvigadziko. MaVhuru aya ese akagadzirwa kuti abviswe zviri nyore kuti zvive nyore kugadzirisa, saka ane mabody anobviswa.

Kana uchida vharuvhu yemuchina wemvura, zvisinei nekupisa, vharuvhu ine chisimbiso cheEPDM ndiyo sarudzo yakanakisisa. Kunze kwekusiyana zvishoma kwekupisa, musiyano mukuru pakati pezvinhu zviviri izvi ikusagona kushandiswa nemakemikari. Viton yakanaka kushandiswa nemafuta nezvimwe zvinhu zvinoparadza, asi kana uchibata nechinhu chisina njodzi semvura, kugara kwenguva refu uku hakudiwi.