Ahakoa te āhua iti noa iho, he mea tino nui te rauemi mowhiti-O o te takirere. Ka taea e te rauemi te whakatau i te ātete pāmahana o te hiri. Ka hoatu hoki e ia he ātete matū ki te hiri, ā, he hototahi ētahi momo rapa ki ngā wai rerekē. E rua ngā rauemi noa mō ngā takirere pōro uniana tūturu ko Viton me EPDM.

He rapa hangai a Viton (kei te taha matau) he ātete matū me te pāmahana teitei. Ko te EPDM he whakarāpopototanga mō te Ethylene Propylene Diene Monomer, ā, he āhuatanga anō tōna e tino rongonui ai hei rauemi O-ring. Ina whakatauritea a Viton ki te EPDM, me whai whakaaro ki ētahi āhuatanga: te ātete pāmahana, te hototahi matū, me te utu. Pānuihia tonu mō te whakataurite katoa.

Ngā hiri rapa EPDM
rapa EPDM (Rapa EPDM) he rapa uaua, he iti te utu, he whānuitia ngā whakamahinga. He mea whakamahi mō te ārai wai i te tuanui nā te mea he pai te hiri o te EPDM. He rauemi noa hoki mō ngā hiri tio nā te mea he ārai wai, ā, he tino pai te ātete ki te pāmahana iti. Ina koa, he pai te mahi a te EPDM i roto i te awhe pāmahana mai i te -49F ki te 293F (-45C ki te 145C), he mea tino pai mō ngā tono i ngā pāmahana katoa.

Ahakoa he maha ngā rapa e ātete ana ki te pāmahana teitei, he torutoru noa iho e taea te tu atu ki ngā pāmahana iti iho pērā i te EPDM. Nā tēnei ka waiho hei whiringa tuatahi mā te hunga e ngana ana ki te hiri i roto i ngā taiao makariri, i ngā rauemi makariri rānei. Ngā Takirere Pōro True Union meNgā Mowhiti-O Hiri EPDMKo ngā tono noa mō te EPDM ko te whakamarumaru hiko, ngā arai kaukau, ngā putorino, ngā kaikohi panera rā, ngā mowhiti-O, me te maha atu.

Haunga te ātete nui ake ki te pāmahana, he whānui te ātete matū o te EPDM. Kei roto i ēnei ko te wai wera, te mamaoa, ngā hopi horoi, ngā otinga pāhare pākawa waro, ngā otinga hauwai konutai, te hinu/hinu silicone, me te maha atu o ngā waikawa me ngā matū kua whakaranua. Kāore e pai mō te whakamahi me ngā hua hinu kohuke pēnei i ngā hinu whakahinuhinu, ngā hinu, ngā wahie rānei. Mō te hototahi matū motuhake o te EPDM, pāwhiri ki konei. Ko ēnei āhuatanga whakamiharo, me tōna utu iti, ka tino rongonui te EPDM hei rauemi hiri.

Ngā hiri Viton
He rapa hangai, he elastomer fluoropolymer hoki a Viton. Ko te tikanga o te "Fluoropolymer" he tino ātete tēnei rauemi ki ngā whakarewa, ngā waikawa me ngā turanga. Ko te kupu "elastomer" he kupu whakawhiti i te "rapa". Kāore mātou e matapaki i te rerekētanga i waenga i te elastomer me te rapa i konei, engari ka matapakihia e mātou te mea e motuhake ai a Viton. He maha ngā wā ka kitea te tae kakariki, parauri rānei o te rauemi, engari ko te mea e tino wehewehe ana ko tōna mātotoru. He nui ake te mātotoru o Viton i te nuinga o ngā momo rapa, ā, ko te hiri Viton tētahi o ngā mea tino kaha.

He whānui te awhe ātete pāmahana o Viton mai i te -4F ki te 410F (-20C ki te 210C). Nā te teitei o ngā pāmahana ka taea e Viton te tu atu, he mea tino pai mō ngā tono pāmahana teitei. He mea whakamahi noa a Viton i roto i ngā mowhiti-O, ngā karapu ātete matū me ētahi atu hua kua whakarewaina, kua whakaputaia rānei. He pai ngā mowhiti-O i hangaia mai i Viton mō te ruku wai, ngā miihini motuka me ngā momo takirere.

Mō te ātete matū, kāore he rite o Viton. He ātete ki te waikura mai i te tini o ngā wai me ngā matū i tētahi atu elastomer kore-fluorinated. Kāore i rite ki te EPDM, he hototahi a Viton ki ngā hinu, ki ngā wahie, ki ngā hinu whakahinuhinu me te nuinga o ngā waikawa inorganic. He tino ātete hoki ki te pēhanga, te waikura hau, te hihi o te rā, te huarere, ngā wahie motuka oxygenated, ngā mea kakara, ngā harore, te pokepokea ai, me ētahi atu. He ātete ake hoki ki te mura i te nuinga o ngā rapa kē atu. Pānuihia atu mō ngā mea me mahi me ngā mea kāore e mahi mō ngā matū Viton.

Ko te raru nui o te Viton ko tōna utu. I roto i te hanga, e waru ngā wā te nui ake o te utu mō te hanga i te nui o ngā rauemi rite ki te EPDM. Mēnā ka hoko koe i tētahi hua he iti noa iho te nui o ēnei rauemi rapa, kāore pea e tino rerekē te utu. Engari mēnā ka tono koe i roto i ngā rahinga nui, ka taea e koe te tumanako ka nui ake te utu o ngā wāhanga Viton i te EPDM.

Ngā hiri Viton me EPDM
Tūtohi Rapa Hiri Viton vs EPDM

Nō reira, ko tēhea rauemi te mea pai rawa atu? Kāore i te tino tika ēnei pātai. He āhuatanga motuhake ō ngā rauemi e rua, nō reira kei te mahi e mahia ana e rātou. Tā mātou CNgā Takirere Tirotiro Pōro PVCme ngā Takirere Hurihuri CPVC e wātea ana me ngā hiri Viton, ngā hiri EPDM rānei. He mea hanga ēnei hiri ki ngā mowhiti-O kua tāutahia ki roto i ngā hononga. He mea hanga ēnei takirere katoa kia ngāwari te wetewete kia māmā ai te tiaki, kia taea ai te tango i ngā tinana.

Mena kei te hiahia koe i tētahi takirere mō tētahi pūnaha wai, ahakoa te pāmahana, ko te takirere me te hiri EPDM te mea pai rawa atu. Haunga ngā ātete pāmahana rerekē, ko te rerekētanga matua i waenga i ngā rauemi e rua ko tō rātou ātete matū. He pai te Viton mō te whakamahi me te wahie me ētahi atu rauemi waikura, engari ina mahi ana ki tētahi mea kāore e kino pērā i te wai, kāore e hiahiatia tēnei roa rawa.