I roto i te ao hanga tino tika, he mea nui te huri me te whakakanapa i ngā pereti mata karāneti ki te whakatau i te papatahi o te mata, te kanapa, me te tika whānui. Ahakoa ko te karāneti tētahi o ngā rauemi taiao tino pakari me te tino pumau, ko te whakatutuki i te tika taumata-micrometer e hiahiatia ana e whakawhirinaki tonu ana ki te whiriwhiri tupato me te whakamahi tika i ngā wai whakakanapa me ngā kaihoko whakakanapa.
I te wā e huri ana, ka pāngia e ēnei wai me ngā matū te tere o te tango rauemi, engari ka pāngia hoki te mata me te pumau mō te wā roa o te papa kirikiri. Nō reira, he mea nui te whiriwhiri i te momo me te hanganga tika hei whakatutuki i ngā hua tino pai, hei whakaroa hoki i te roa o te ora o te wāhanga kirikiri tino tika.
I roto i ngā mahi ngaio, ko ngā wai me ngā kaihoko e whakamahia ana mō te huri papa granite ka wehea kia whā ngā wāhanga mahi: ngā kai horoi, ngā kai whakakoi, ngā kaihoko oro, me ngā kai hiri.
Ko te nuinga o ngā kaihoroi he mea whakamahi hei tango i ngā poke me ngā toenga mai i te mata o te karāhe—pērā i te hinu, te waikura, te puehu pai rānei—i mua atu, i muri hoki i te huri. Ko ngā otinga horoi noa ko ngā kaihoroi pH kūpapa, ngā kaihoko waikawa ngawari, ngā hopi horoi kawakore rānei. I te wā e whakamahi ana i ngā kaihoroi matū, me whakahaere e ngā kaiwhakahaere te kukū me te roa o te whakaaturanga hei ārai i te whakairo matū, te whakapōuri rānei i te mata o te karāhe.
Ko ngā mea whakakoi te mea matua mō te tango rauemi. Ka tapahia, ka whakatauritea hoki e ngā kirikiri whakakoi te mata o te karāhe hei whakakore i ngā hapa iti, ngā karawarawa, me te kore taurite. Ko ngā rauemi whakakoi e whakamahia whānuitia ana ko te alumina, te silicon carbide, me ngā matū silica parakore teitei. Ko te kōwhiringa o te momo whakakoi, te rahi o te matūriki, me te kukū e whakawhirinaki ana ki te pakeke o te karāhe me te tika o te mata e hiahiatia ana. Mō te whakaotinga pai, ka whakamahia ngā mea whakakoi me ngā rahi matūriki iti iho i te maikoroni hei whakatutuki i ngā mata tino papatahi i roto i te 1–2 µm te manawanui papatahi.
Ka whakamahia ngā mea whakakanapa i muri i te huri hei whakarei ake i te maeneene me te kanapa o te mata. I tēnei wāhanga, ehara te whāinga i te tango rauemi engari ko te whakapai ake i te kakano o te mata moroiti. Ko ngā whakatakotoranga matatau i runga i te polyurethane, ngā matū kiriaku, me te chromium oxide ka whakamahia pinepine hei whakaputa i te mutunga rite ki te whakaata. Ko te taurite tika i waenga i te pēhanga, te tere, me te hanganga o te mea he mea nui kia tutuki ai te kanapa ōrite me te kore e whakaiti i te tika.
Hei whakamutunga, ka pania ngā hiri hei paparanga tiaki ina oti te whakakanapa. He tino ātete te karāneti ki te waikura me te rerekētanga o te pāmahana, engari mā te pania o tētahi hiri e tika ana ka pai ake te ātete ki te wai, te hinu, me te puehu, me te pupuri tonu i te pumau o te tirohanga me te miihini o te papaaho. He maha ngā wā ka whakamahia e ngā kaihanga ngaio ngā hiri polymer, hiri ware pi rānei hei whakarite i te tiakitanga mō te wā roa, inā koa i roto i ngā taiao haumākū teitei, i ngā taiao taiwhanga rānei.
I te wā e huri ana, e whakakanapa ana hoki i te karāhe, me whakarite e ngā kaiwhakahaere he taiao pāmahana me te haumākū e whakahaeretia ana—ko te tikanga he 20 ± 1 °C—hei ārai i te rerekētanga o te wera. E taunakihia ana hoki te whakamahi i te wai parakore, i ngā wai whakakanapa koretake rānei hei karo i te whakaurunga mai o ngā poke. Mā te tiaki auau, tae atu ki te horoi me te tirotiro i te pereti mata, ka āwhina i te pupuri i tōna tika me te whakaroa i tōna roanga mahi.
Hei whakamutunga, ko te whakatutukitanga o tētahi whakaotinga parakore i runga i tētahi pereti mata karāhe tino tika e whakawhirinaki ana ki te whiriwhiri tika me te whakamahinga ngaio o ngā wai whakakanapa me ngā kaihoko. Ia wāhanga—mai i te horoi ki te hiri—me whai tohungatanga, aro ki ngā taipitopito, me te whakahaere pakari i ngā tawhā tukanga. Ina oti tika, ka puta he papa karāhe tino papatahi, maeneene, me te pakari—e whakarite ana i te mahi pono mō te ine tika me ngā tono hangahanga teitei.
Wā tuku: Whiringa-ā-rangi 13-2025