Te hanga
Ko te hanga roera rapa he whakapiri i te rapa paninga ki te matua whakarewa, tae atu ki te tikanga takai, te tikanga whakaputa, te tikanga whakaputa, te tikanga pēhanga werohanga me te tikanga werohanga. I tēnei wā, ko ngā hua o roto ko te whakapiri me te whakaputa ā-ringa, ā-ringa rānei, ā, kua mōhio te nuinga o ngā whenua ke ki te aunoatanga ā-mīhini. Ko ngā roera rapa nui me te rahi-waenga ka hangaia mā te whakaputa whakarāpopototanga, te whakaputa whakapiri tonu mā te kiriata whakaputa, te whakaputa takai tonu rānei mā te rīpene whakaputa. I te wā anō, i roto i te tukanga whakaputa, ka whakahaerehia aunoatia ngā whakatakotoranga, ngā ine me te āhua e te rorohiko iti, ā, ka taea hoki te whakaputa i ētahi mā te tikanga whakaputa koki-matau me te whakaputa āhua motuhake.
Ehara i te mea ka taea anake te whakaiti i te kaha o te mahi mā te tikanga whakapūkara kua whakahuatia ake nei, engari ka taea hoki te whakakore i ngā mirumiru pea. Hei ārai i te hurihanga o te roera rapa i te wā whakapūkara, hei ārai hoki i te puta mai o ngā mirumiru me ngā hautai, inā koa mō te roera rapa i whakapūkarahia mā te tikanga takai, me whakamahi i tētahi tikanga pēhanga ngāwari ki waho. I te nuinga o te wā, ka takaihia te mata o waho o te roera rapa ki ētahi paparanga o te kakahu miro, te kakahu nairona rānei, kātahi ka whakapūkaratia ki te waea maitai, ki te taura muka rānei, ka pēhangatia. Ahakoa kua oti kē tēnei tukanga te mīhini, me tango te takai i muri i te whakapūkara kia hanga he tukanga "cecal", ka uaua ai te tukanga hanga. Heoi anō, he iti rawa te whakamahinga o te kakahu takai me te taura takai, ā, he nui te para e pau ana.
Mō ngā roera rapa iti me te moroiti, ka taea te whakamahi i ngā momo tukanga whakaputa, pērā i te whakapiri ā-ringa, te kōhao whakaputa, te pēhanga werohanga, te werohanga me te ringihanga. Hei whakapai ake i te whai huatanga o te whakaputa, kua whakamahia te nuinga o ngā tikanga whakahāngai, ā, he nui ake te tika i tērā o te tikanga kore-whakahāngai. Ko te pēhanga werohanga, te werohanga rapa totoka me te ringihanga rapa wai kua noho hei tikanga whakaputa tino nui.
Te whakapūkara
I tēnei wā, ko te tikanga whakamomona o ngā roera rapa nui me te rahi-waenga kei te whakamahi tonu i te whakamomona tāke whakamomona. Ahakoa kua whakarerekētia te aratau pēhanga ngāwari, kāore tonu e mawehe atu i te taumaha o te mahi kawe, te hiki me te tango. E toru ngā tikanga whakamahana o te pūtake wera whakamomona: te mamaoa, te hau wera me te wai wera, ā, ko te mamaoa tonu te tikanga matua. Ko ngā roera rapa me ngā whakaritenga motuhake nā te pā o te matua whakarewa ki te mamaoa wai ka whakamahi i te whakamomona mamaoa ā-kore, ā, ka roa ake te wā mā te 1 ki te 2 ngā wā. Ko te tikanga e whakamahia ana mō ngā roera rapa me ngā matua rino tuwhera. Mō ngā roera rapa motuhake kāore e taea te whakamomona ki te tāke whakamomona, ka whakamahia te wai wera i ētahi wā mō te whakamomona, engari me whakatau te maimoatanga o te parahanga wai.
Hei ārai i te wehenga o te rapa me te matua whakarewa nā te rerekētanga o te whakahekenga o te kawe wera i waenga i te roera rapa me te matua rapa, ka whakamahia e te whakamomona he tikanga whakamahana puhoi me te whakanui pehanga, ā, he roa ake te wā whakamomona i te wā whakamomona e hiahiatia ana e te rapa tonu. Hei whakatutuki i te whakamomona ōrite i roto, i waho hoki, me te whakarite i te kawe wera o te matua whakarewa me te rapa, ka noho te roera rapa nui ki roto i te tāke mō te 24 ki te 48 hāora, arā, tata ki te 30 ki te 50 ngā wā o te wā whakamomona rapa noa.
Ko ngā roera rapa iti me ngā roera iti kua hurihia inaianei hei whakapūmau pereti whakapūmau, ka tino hurihia te tikanga whakapūmau tuku iho o ngā roera rapa. I ngā tau tata nei, kua whakamahia ngā mīhini whakapūmau werohanga hei tāuta i ngā pokepoke me te whakapūmau korehau, ā, ka taea te whakatuwhera me te kati aunoa i ngā pokepoke. Kua tino pai ake te taumata o te mīhini me te aunoatanga, ā, he poto te wā whakapūmau, he teitei te whai huatanga o te whakaputa, ā, he pai te kounga o te hua. Ina koa ka whakamahia he mīhini whakapūmau werohanga rapa, ka whakakotahihia ngā tukanga e rua o te whakapūmau me te whakapūmau hei kotahi, ā, ka taea te whakapoto i te wā ki te 2 ki te 4 meneti, kua waiho hei huarahi nui mō te whanaketanga o te hanga roera rapa.
I tēnei wā, kua tere te whanaketanga o te rapa wai e tohuhia ana e te elastomer polyurethane (PUR) i roto i te hanga roera rapa, ā, kua whakatuwherahia he ara hou mō te hurihanga rauemi me te tukanga. Ka tangohia e ia te ahua ringihanga hei whakakore i ngā mahi hanga uaua me ngā taputapu whakamomona nui, ka tino whakangawari i te tukanga hanga o ngā roera rapa. Heoi, ko te raru nui ko te whakamahi i ngā pokepoke. Mō ngā roera rapa nui, inā koa mō ngā hua takitahi, ka tino piki ake te utu hanga, ka nui te uaua ki te whakatairanga me te whakamahi.
Hei whakaoti i tēnei raruraru, kua puta mai tētahi tukanga hou mō te hanga roera rapa PUR me te kore he pokepokea ai i ngā tau tata nei. Ka whakamahia te polyoxypropylene ether polyol (TDIOL), te polytetrahydrofuran ether polyol (PIMG) me te diphenylmethane diisocyanate (MDl) hei rauemi mata. Ka tere te tauhohe i muri i te whakaranu me te whakaoho, ā, ka ringihia te rahinga ki runga i te matua whakarewa roera rapa e hurihuri puhoi ana. , Ka mahia i ia taahiraa i ia taahiraa i te wā e ringihia ana me te whakamaroke, ā, i te mutunga ka hangaia te roera rapa. Ehara i te mea he poto noa te tukanga o tēnei tukanga, he nui te miihini me te aunoatanga, engari ka whakakorea hoki te hiahia mō ngā pokepokea nui. Ka taea e ia te whakaputa roera rapa o ngā whakatakotoranga me ngā rahi rerekē i te hiahia, ka tino whakaiti i te utu. Kua waiho hei huarahi whanaketanga matua o ngā roera rapa PUR.
Hei tāpiritanga, kei te tere haere te whanaketanga o ngā roera rapa iti-pai e whakamahia ana i roto i te hanga taputapu aunoa tari me te rapa silicone wai puta noa i te ao. E rua ngā wāhanga: te whakamahana whakamahana (LTV) me te whakamahana pāmahana rūma (RTV). He rerekē anō hoki ngā taputapu e whakamahia ana i te PUR i runga ake nei, ka hangaia he momo hanga whakarewa anō. I konei, ko te take tino nui ko te whakahaere me te whakaiti i te matotoru o te ranunga rapa kia mau tonu ai te pēhanga me te tere whakaputa.
Te wā tuku: Hōngongoi-07-2021
