Kei te pāngia koe e ngā pāmahana tino kino, ngā matū, te waku iti rānei? Akohia te mahi a ngā hiri PTFE (Variseals) kua whakakahangia e te puna, me te take he otinga pono ēnei mō ngā tono uaua i roto i te rererangi, te motuka, me te hanga.
Kupu Whakataki: Ngā Herenga Hangarau o ngā Hiri Elastomeric
I roto i te hangarau mahi-teitei, ko te wāhanga hiri te hononga matua e whakatau ana i te pono o te pūnaha. Ahakoa he pai te mahi a ngā hiri rapa paerewa pērā i ngā mowhiti-O i roto i te maha o ngā tono, ka eke ki ō rātou rohe ina tūtaki ki ngā pāmahana tino nui, ki ngā matū kaha, ki te nekehanga hihiri, ki ngā whakaritenga waku iti rānei. E hiahia ana ēnei wero ki tētahi otinga e whakakotahi ana i ngā āhuatanga rauemi pai o ngā polymer matatau me te kaha hiri ōrite, urutau.
Koinei te rohe o te hiri puna-kaha (e mōhiotia whānuitia ana ko te Variseal, te Spring Seal rānei). Ka whakaratohia e tēnei tuhinga he ruku hohonu hangarau ki te mahi a tēnei hiri, ngā raruraru matua e whakatauhia ana e ia, me ngā whakaaro hoahoa nui mō ngā kaihangarau e tohu ana i ngā hiri mō ngā taiao uaua.
1. Mātāpono Matua: Te Mahi Tahi o te Puna me te Polymer
He pūnaha wāhanga-rua te hiri whakakaha-puna, he mea hanga tika:
Te Koti Pūmua: He ngutu hiri āhua-U te nuinga o te wā, he mea mīhini mai i te PTFE (Teflon®) me ētahi atu pūmua mahi-teitei pēnei i te PEEK, te UHMWPE rānei. Mā tēnei koti ka whakaratohia te atanga hiri tuatahi, e whakamahi ana i te koretake o te matū o te rauemi, te whānuitanga o te pāmahana, me te tauwehenga waku tino iti.
Te Puna Whakahihiko: He puna porowhita, he mea hanga i te maitai kore waikura, i ngā koranu mahi-teitei rānei pērā i a Elgiloy®, kei roto i te hongere-U o te koti.
He tino whai hua te tikanga hiri:
1. Ka whakaratohia e te puna he kaha pūmau kua whakaritea i mua, e pana ana i te ngutu hiri o te koti ki te kakau, ki te whare rānei (te pakitara repe).
2. Ina pēhia te pūnaha, ka pā ki te hiri, ka whakanui ake i te pēhanga o te ngutu ki te mata e hono ana. Ka hangaia he hiri pono, he hiri kaha-pēhanga.
3Ko te mahi nui a te puna he whakaea i te kakahu o te rauemi (te karawarawa) me te pupuri i te kaha hiri ahakoa ngā hapa iti o te pūnaha, te āhua rerekē, ngā huringa āhua rānei i puta mai i te pāmahana. Mā tēnei ka pumau te mahi a te hiri puta noa i te roanga o te ora mahi.
2. Ngā Wero Matua mō te Whakamahinga me te Āhua o te Whakatau a ngā Hiri Hiko-Koanga
Kua tohua tēnei hangarau hei whakakore i ngā raruraru hangarau motuhake, utu nui hoki:
Wero: Te Pāmahana Tino Nui me te Rere Matao o te PTFE.
Horopaki: Te hiri i ngā wai whakapūkara pērā i te hauota wai (-200°C) me ngā wai waipēhi pāmahana teitei (>200°C).
Te Otinga: Ka mau tonu ngā āhuatanga o te PTFE i roto i te whānuitanga o te pāmahana ina pakaru ngā elastomers. Heoi, he ngāwari te PTFE ki te "rere makariri" – he rerekētanga i raro i te kawenga tonu. Ka ārai kaha te puna o roto i tēnei ngoki, ka pupuri i te pēhanga ngutu pai rawa atu, ā, ka ārai i te pakaru o te hiri i roto i te wā.
Wero: Ngā Taiao Matū, Taiao Plasma rānei e Kaha Ana te Whakakaha.
Horopaki: Te hiri i ngā whakarewa kaha, ngā waikawa, ngā kawakore, ngā taputapu tukatuka angiangi haurua-haurua rānei ki ngā plasma waikura.
Te Otinga: He tino koretake te PTFE i roto i ngā matū, ā, he tino ātete ki te whānuitanga o ngā momo pāpāho kaha. Nā tēnei ka pai rawa atu ngā hiri whakakaha-puna mō te tukatuka matū, te rongoā, me ngā tono haurua-ira.
Wero: Ngā Whakamahinga Hihiri me te Iti/Kore Whakahinuhinu.
Horopaki: Ngā toki hurihuri tere-teitei i roto i ngā taputapu kai-papa, i ngā rūma ma, i ngā tono rānei kāore e hiahiatia he hinu whakahinuhinu.
Te Otinga: Mā te hinu whakahinuhinu taiao o te PTFE ka taea e ēnei hiri te mahi me te iti o te waku me te pakaru, ahakoa i roto i ngā āhuatanga maroke, i ngā āhuatanga iti rānei te hinu whakahinuhinu. Ka whakaitihia te whakapaunga hiko me te whakaputa wera.
Wero: Te Pono mō te Wā Roa me te Tiaki Iti.
Horopaki: Ka hiritia i ngā wāhi e kore e taea te uru atu, i ngā tono rānei he nui rawa te utu mō te wā whakamutu mahi kāore i whakamaheretia.
Te Otinga: Mā te kaha pumau o te puna ka ea te pakaru o ngā ngutu, ka "whakatikatika-ā-unoa" te hiri. Ko te tikanga o tēnei ka roa ake ngā wā ratonga me te whakapai ake i te wā toharite i waenga i ngā rahunga (MTBF), ka whakaiti i te utu katoa o te mana pupuri.
3. Te Hoahoa Arohaehae me te Kōwhiringa Rauemi mō te Mahi Tino Pai
Ehara i te mea ngāwari te whiriwhiri i te hiri puna-whakakaha tika; me āta whakaaro ki ētahi āhuatanga:
Rauemi o te koti:
PTFE Wahine: Ko te paerewa mō te nuinga o ngā tono matū me te pāmahana.
PTFE Whakakīia (hei tauira, ki te Karāhe, te Waro, te Karāwhite, te Parahi): Whakamahia hei whakarei ake i te ātete ki te kakahu, hei whakaiti i te rere makariri, hei whakapai ake i te kawe wera, hei whakanui ake rānei i te pakari.
Ētahi atu Pūmua (PEEK, UHMWPE): I whiriwhiria mō ngā hiahia motuhake pēnei i te kaha miihini teitei ake (PEEK) te ātete pai rawa atu rānei ki te pakū (UHMWPE).
Momo me ngā Rauemi o te Puna:
Te Kaha o te Puna: Ka tīpakohia ngā puna kawenga māmā, waenga, taumaha rānei i runga i te pēhanga, te tere, me te waku e hiahiatia ana.
Rauemi o te Puna:
Kowiri tira (302, 316): Mō te ātete whānui ki te waikura.
Elgiloy®/Hastelloy®: Mō ngā taiao tino uaua e hiahia ana kia tino ātete ki te pakaru, ki ngā pāmahana teitei, me ngā wai waikura pērā i te wai tote.
Āhua Hiri: Ka taea te whakapai ake i te hoahoa U-cup mō te hiri hurihuri, te hiri tauutuutu, te hiri tūmau rānei. He mea nui ngā āhuatanga pēnei i te koki ngutu, te teitei o te rekereke, me te matotoru o te koti, ā, he pai ake te whakatau mā te kōrero tahi me tētahi kaihanga mātau.
4. Te Rerekētanga Hanga: He aha te Hiranga o te Tika
Ko te mahi matapae o tētahi hiri pūngao-puna ka tutuki mā te hiranga o te hanga. Ko ngā puna koretake, ko ngā koti rānei kāore i te pai te mīhini, ka arahi ki te pakaru wawe. Ko ngā pou matua o te hanga ko:
Te Mīhini Tika o ngā Koti: Me mīhini tika te koti PTFE, kaua e whakapūtā noa, kia tutuki ai ngā āheinga tika me ngā whakaotinga mata pai o te ngutu hiri. He mea nui te ngutu maeneene, ōrite mō te iti o te waku me te hiri whai hua.
Te Pūmautanga o te Puna: Me takai te puna kia rite ki ngā whakaritenga, kia rite ai te tohatoha o te kaha huri noa i te porowhita hiri katoa. Kāore e taea te whiriwhiri i te ōritetanga o te puranga ki te puranga.
Te Mana Kounga Pūmau: Me tirotirohia ngā āhuatanga me ngā rauemi katoa o ia puranga whakaputa. Mā te whai i ngā rauemi mata ki te hua kua oti ka whakapūmau i te kounga me te tutuki i ngā whakaritenga (hei tauira, me ROHS, REACH).
Whakamutunga: Te Tohu i te Hiri Tika mō te Pono Tino Pai
He otinga pono, he otinga whai mana hoki ngā hiri whakakaha-puna mō ngā tono kāore e taea te whakamahi i ngā elastomer paerewa. Nā tō rātou kaha ki te mahi i roto i ngā āhuatanga tino kino, me te whakaiti i ngā utu tiaki mō te wā roa, he haumi hangarau atamai ēnei.
Ko te angitu e whakawhirinaki ana ki te mārama ki ngā hiahia motuhake o te tono me te mahi tahi me tētahi kaiwhakarato e tino mātau ana ki ngā āhuatanga rerekē o te pūtaiao rauemi me te hanga tino tika.
Kua rite koe ki te aro atu ki ō wero hiri tino uaua?
Whakapā mai ki a mātou ki te matapaki i tō tono.Ka taea e tā mātou tīma hangarau te whakarato i ngā taunakitanga e ahu mai ana i ngā raraunga, i ngā hoahoa ritenga, me ngā tauira hei whakarite kia angitu tō kaupapa.
Wā tuku: Hakihea-18-2025