Ko te onepū he mahi e whakamahi ana i te hau kōpeke hei mana hei pana i ngā mea whakakoi ki te mata o te mea mahi hei tukatuka. Koinei te mea e kiia nei ko te onepū, koinei te mea e kiia nei e tātou ko te pupuhi pupuhi. Nā te mea i ngā rā tōmua o te pupuhi pupuhi, ko te onepū anake te mea whakakoi i taea te whakamahi, nō reira i kiia ai te pupuhi pupuhi he pupuhi onepu i taua wā, ā, mō te wā roa i muri mai. Ka taea e te onepū te whakatutuki i te mata e horoia ana kia whiwhi i te ma e hiahiatia ana me te taratara, me te whakapai ake i te piri o te paninga ki te mata turanga. Ahakoa te pai o te paninga, kāore e taea te tāpiri ki te mata o te mea mahi me te kore he maimoatanga mata roa. Ko te kaupapa o te maimoatanga mata i mua ko te horoi i te mata me te whakaputa i te taratara e hiahiatia ana hei "raka" i te paninga ki te mata. I muri i te paninga o te mata o te mea mahi i pupuhihia ki te onepū ki te paninga ahumahi pai-mahi, ko te roa o te oranga o te paninga he 3.5 ngā wā roa atu i te roa o te oranga o te paninga kounga ōrite i runga i te mata i rongoatia e ētahi atu tikanga. Ko tētahi atu painga o te pupuhi onepu (shot blasting) ko te taea te whakarite i te taratara o te mata i mua i te whakaritenga, ā, ka taea hoki te whakatutuki i te wā o te tukanga horoi.
Hei tauira, he tukanga te whakatio hukapapa epounamu karāhe whakapaipaiKa māeneene, ka pirau. Ka whiti te mārama ki te mata hei hanga whakaata horapa. I roto i te hukapapa matū, ka hurihia te karāhe mā te mīhini, ka hurihia rānei mā te ringa ki te emery, te onepu silica, te paura pamekaranete me ētahi atu mea whakakoi hei hanga i tētahi mata taratara ōrite, ka taea rānei te rongoā i te karāhe me ētahi atu mea ki te otinga waikawa hydrofluoric hei hanga karāhe hukapapa.
Ka whakamahia te hukapapa me te pupuhi onepu hei uhi i te mata o te karāhe, kia horapa ōrite ai te mārama i muri i te whitinga i roto i te whakamarumaru rama. He uaua ki ngā kaiwhakamahi noa te wehewehe i waenga i ēnei hangarau e rua. Kei raro nei ngā whakamārama mō ngā tikanga hanga o ēnei hangarau e rua me pēhea te tautuhi i a rāua.
1. Te tukanga paninga hukapapa
Ko te hukapapa e pā ana ki te rumaki i te karāhe ki roto i te wai waikawa kua oti te whakarite (te pani rānei i te whakapiri waikawa), te waikura i te mata karāhe ki te waikawa kaha, ā, mā te haukini hauwai fluoride i roto i te wai waikawa kaha ka puta he tioata i te mata karāhe. Nō reira, ki te pai te mahi hukapapa, he maeneene rawa te mata o te karāhe hukapapa, ā, ka puta he āhua kohu i ngā tioata marara. Ki te mea he taratara te mata, he tohu tēnei kei te tino memeha te karāhe e te waikawa, kāore rānei he tioata o ētahi o aua tioata. Ko te āhuatanga o tēnei tukanga ko te putanga mai o ngā tioata kanapa i runga i te mata karāhe i hangaia i raro i ngā āhuatanga tino kino. Ko te take matua kua tata pau te haukini hauwai fluoride. Hei whakatutuki i tēnei āhua, he maha ngā kaihanga kua mahi i ngā whakamātautau me ngā rangahau, engari kāore anō kia taea te wikitoria i tēnei uauatanga.
2Hangarau pupuhi onepu
Ka whakamahia ngā matūriki onepu e tukuna ana e te pū rehu i te tere tere hei patu i te mata o te karāhe kia puta ai he mata maeneene, kāore i te ōrite, ā, ka puta he pānga o te marara o te mārama, me te hanga i te ahua pōuri ina puta te mārama. He taratara te mata o ngā hua karāhe i puta mai i te tukanga pupuhi onepu. Nā te mea kua pakaru te mata o te karāhe, he rite ki te karāhe mā te aro ki te mārama o te karāhe mārama taketake.
He rerekē rawa ngā tukanga e rua. He nui ake te utu o te karāhe hukapapa i te karāhe onepū, ā, ko te hua ka whakawhirinaki ki ngā hiahia o ngā kaiwhakamahi. Kāore ētahi karāhe ahurei e pai mō te hukapapa. Mai i te whai i ngā tikanga rangatira, me whiriwhiri te matte. Ka taea te mahi i te tukanga onepū i roto i ngā wheketere whānui, engari ehara i te mea ngāwari te mahi pai i te tukanga onepū.
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Wā tuku: 25 o Ākuhata-2021