Ko te Polytetrafluoroethylene (PTFE), e mōhiotia whānuitia ana mō tōna pumau matū tino pai, tōna ātete ki te pāmahana teitei/iti, me te tauwehenga waku iti, kua tapaina ko "Kīngi Kirihou" ā, e whakamahia whānuitia ana i roto i ngā ahumahi matū, miihini, me te hiko. Heoi, he ngoikoretanga ā-roto tō te PTFE parakore pērā i te kaha miihini iti, te ngāwari ki te whakarerekētanga rere makariri, me te kawe wera ngoikore. Hei whakakore i ēnei herenga, kua whakawhanakehia ngā hiato PTFE kua whakapakarihia ki te muka karāhe. Ka whakapai ake tēnei rauemi i ngā inenga mahi maha me te pupuri tonu i ngā āhuatanga pai o te PTFE, nā te pānga whakapakari o ngā muka karāhe.
1. Te Whakapai Ake i ngā Āhuatanga Mīhini
Nā te hanganga mekameka ngota ngota tino ōrite me te teitei o te tioata o te PTFE parakore ka ngoikore ngā kaha i waenga i ngā ngota ngota, ka iti te kaha miihini me te pakeke. Nā tēnei ka ngāwari te hurihanga i raro i te kaha o waho nui, ka whakawhāiti i ana tono ki ngā mara e hiahia ana kia kaha teitei. Mā te whakaurunga o ngā muka karāhe ka nui ake te whakapainga ki ngā āhuatanga miihini o te PTFE. Ko ngā muka karāhe e tohuhia ana e tō rātou kaha teitei me te modulus teitei. Ina horapa ōrite i roto i te matrix PTFE, ka kaha te kawe i ngā kawenga o waho, ka whakarei ake i te mahi miihini whānui o te hiato. E whakaatu ana ngā rangahau mā te tāpiri i te nui o te muka karāhe e tika ana, ka taea te whakanui ake i te kaha kume o te PTFE mā te 1 ki te 2 ngā wā, ā, ka nui ake te whakamiharo o te kaha piko, ka pai ake mā te 2 ki te 3 ngā wā ki te whakataurite ki te rauemi taketake. Ka nui ake hoki te pakeke. Mā tēnei ka taea e te PTFE kua whakapakarihia ki te muka karāhe te mahi pono i roto i ngā taiao mahi uaua ake i roto i te hanga miihini me te rererangi, pērā i roto i ngā hiri miihini me ngā wāhanga peera, ka whakaitihia ngā rahunga i puta mai i te koretake o te kaha rauemi.
2. Te Mahi Wera Arotau
Ahakoa he pai te mahi a te PTFE parakore i roto i te ātete pāmahana teitei me te pāmahana iti, ka taea te whakamahi mō te wā roa i waenga i te -196°C me te 260°C, he ngoikore tōna pumau āhua i ngā pāmahana teitei, ina ngāwari ki te whakarerekē i te pāmahana. Mā te tāpiri i ngā muka karāhe ka whakatika i tēnei take mā te whakanui ake i te pāmahana whakakorikori wera (HDT) me te pumau āhua o te rauemi. He nui te ātete wera me te pakari o ngā muka karāhe. I roto i ngā taiao pāmahana teitei, ka aukati i te nekehanga o ngā mekameka ngota PTFE, ā, ka aukati i te whānui me te whakarerekētanga wera o te rauemi. Mā te ihirangi muka karāhe tino pai, ka taea te whakanui ake i te pāmahana whakakorikori wera o te PTFE kua whakapakarihia ki te muka karāhe neke atu i te 50°C. Ka mau tonu te āhua pumau me te tika o te āhua i raro i ngā tikanga whakahaere pāmahana teitei, kia pai ai mō ngā tono me ngā whakaritenga pumau pāmahana teitei, pērā i ngā paipa pāmahana teitei me ngā hiri hiri pāmahana teitei.
3. Te Whakaiti i te Rere Matao
He take nui te rere makariri (te ngokingoki rānei) ki te PTFE parakore. E pā ana ki te whakarerekētanga kirihou puhoi e puta ana i raro i te kawenga pumau i roto i te wā, ahakoa i ngā pāmahana iti. Ka whakawhāitihia e tēnei āhuatanga te whakamahinga o te PTFE parakore i roto i ngā tono e hiahia ana kia roa te āhua me te pumau o te taha. Mā te whakaurunga o ngā muka karāhe ka ārai i te āhuatanga rere makariri o te PTFE. Ka mahi ngā muka hei anga tautoko i roto i te anga PTFE, ka aukati i te reti me te whakaritenga anō o ngā mekameka ngota PTFE. E whakaatu ana ngā raraunga whakamātautau ka whakaitihia te tere rere makariri o te PTFE kua whakapakarihia ki te muka karāhe mā te 70% ki te 80% ki te whakaritea ki te PTFE parakore, ka whakanui ake i te pumau o te taha o te rauemi i raro i te kawenga roa. Nā tēnei ka pai mō te hanga i ngā wāhanga miihini me ngā wāhanga hanganga tino tika.
4. Te Ātete ki te Maukati Kua Whakapaitia
Ko te iti o te tauwehenga waku o te PTFE parakore tētahi o ōna painga, engari ka whai wāhi atu hoki ki tōna ātete ngoikore ki te kakahu, ka ngāwari ki te kakahu me te whakawhiti i te wā o ngā tukanga waku. Ka whakapai ake te PTFE kua whakapakarihia ki te muka karāhe i te pakeke o te mata me te ātete kakahu o te rauemi mā te pānga whakapakari o ngā muka. He nui ake te pakeke o te muka karāhe i tō te PTFE, ka taea ai e ia te ātete pai ki te kakahu i te wā waku. Ka whakarerekētia hoki e ia te tikanga waku me te kakahu o te rauemi, ka whakaiti i te kakahu piri me te kakahu whakakoi o te PTFE. Hei tāpiri, ka taea e ngā muka karāhe te hanga i ngā kokiri iti ki runga i te mata waku, ka whakarato i tētahi pānga ārai-waku me te whakaiti i ngā nekehanga o te tauwehenga waku. I roto i ngā tono mahi, ina whakamahia hei rauemi mō ngā wāhanga waku pēnei i ngā peera reti me ngā mowhiti piston, ka roa ake te roa o te ratonga o te PTFE kua whakapakarihia ki te muka karāhe, tera pea he maha ngā wā, he tekau rānei ngā wā ki te whakataurite ki te PTFE parakore. Kua whakaatuhia e ngā rangahau ka taea te whakapai ake i te ātete kakahu o ngā hiato PTFE kua whakakiia ki te muka karāhe tata ki te 500 ngā wā ki te whakataurite ki ngā rauemi PTFE kāore i whakakiia, ā, ka piki ake te uara PV here tata ki te 10 ngā wā.
5. Te Whakarei Ake i te Ahurea Wera
He iti te kawe wera o te PTFE parakore, kāore e pai mō te whakawhiti wera, ā, he herenga kei roto i ngā tono he nui ngā whakaritenga mō te marara wera. He tino teitei te kawe wera o te muka karāhe, ā, mā te tāpiri atu ki te PTFE ka taea te whakapai ake i te kawe wera o te rauemi. Ahakoa kāore te tāpiri o te muka karāhe e tino whakanui i te tauwehenga kawe wera o te PTFE, ka taea e ia te hanga ara kawe wera i roto i te rauemi, ka tere ake te tere o te whakawhiti wera. Mā tēnei ka pai ake te kaha tono o te PTFE kua whakakahangia ki te muka karāhe i roto i ngā mara hiko me te hiko, pērā i ngā papa wera me ngā papa porowhita, ka āwhina ki te whakatika i ngā take kohikohi wera e pā ana ki te kawe wera ngoikore o te PTFE parakore. Ka āwhina hoki te kawe wera kua whakapaitia ki te marara i te wera waku i roto i ngā tono pēnei i ngā peera, ka whai wāhi ki te mahi pai ake.
Whānuitanga Whakamahinga: He whānuitia te whakamahinga o tēnei rauemi hiato i roto i ngā hiri ahumahi, ngā peera/pūmau kawenga-teitei, ngā taputapu haurua-ira, me ngā wāhanga hanganga ātete-kakahu i roto i te umanga matū. I roto i te mara hikohiko, e whakamahia ana ki te hanga i ngā kēkete ārai mō ngā wāhanga hiko, te ārai mō ngā papa ara iahiko, me ngā hiri tiaki. Ka whakawhānuihia anō tōna mahi ki te rāngai rererangi mō ngā paparanga ārai wera ngāwari.
Tuhipoka mō ngā Here: Ahakoa he nui te whakarei ake a te muka karāhe i ngā āhuatanga maha, he mea nui kia mōhiotia, i te pikinga ake o te ihirangi muka karāhe, ka heke pea te kaha kume, te roa, me te pakari o te rauemi honohono, ā, ka piki haere te tauwehenga waku. Hei tāpiri, kāore e pai te whakamahi i ngā rauemi honohono muka karāhe me te PTFE i roto i ngā rauemi kawakore. Nō reira, ko te whakatakotoranga, tae atu ki te ōrau o te muka karāhe (te nuinga o te 15-25%) me te whakakotahitanga pea me ētahi atu whakakī pēnei i te karāhe, te MoS2 rānei, kua whakaritea kia tutuki ai ngā whakaritenga tono motuhake.
Wā tuku: Hakihea-05-2025