Ko ngā pereti mata karāhe te tūāpapa o te ine tika, e whakamahia whānuitia ana i roto i ngā taiwhanga me ngā whare hanga hei turanga tohutoro mō te tirotiro i ngā taputapu, ngā taputapu tika, me ngā wāhanga miihini. He mea hanga mai i te karāhe taiao kounga teitei, ka whakakotahihia e ēnei pereti ngā painga ā-tinana o te kōhatu me te pumau o ngā āhuatanga, e tuku ana i te mahi pai ake i ngā pereti rino maka tuku iho.
Ka hangaia ia pereti mata karāneti mā te whakakotahitanga o te miihini tika me te huri ā-ringa ātaahua, i te nuinga o te wā i roto i te taiao pāmahana pumau hei whakarite i te tika rawa atu. Ko te hua he mata mahi maeneene, papatahi me te hanganga pai, he kanapa pango, me te kakano ōrite. Mā tēnei whakakotahitanga o te ataahua me te tika ka waiho te karāneti hei rauemi kore e taea te whakakapi mō ngā mahi ine me te whakatikatika tino tika.
Hei whakatutuki me te pupuri i taua tino tika, me tutuki i ngā pereti mata karāhe ngā paerewa rauemi me te hanga tino pakari. Me angiangi te kōhatu e whakamahia ana, me te matotoru hoki—he karāhe gabbro, he diabase, he karāhe pango rānei—me te ihirangi biotite kei raro iho i te 5%, te mimiti wai kei raro iho i te 0.25%, me te modulus elastic neke atu i te 0.6 × 10⁻⁴ kg/cm². Me teitei ake te pakeke o te mata i te 70 HS hei whakarite i te ātete pai ki te kakahu. I te wā e hangaia ana, me tino kore he kapiti, he pakaru, he kōhao hau, he whakaurunga para rānei i te mata mahi. Tērā pea ka whakaaetia ngā hapa iti o te āhua e kore e pā ki te tika, engari ka tino āraia tetahi hapa i runga i te mata ine ka pā ki ngā hua.
Kāore i rite ki ngā pereti rino maka, he kore-aukume ngā pereti mata o te karāneti, ā, he ātete ki te waikura, ā, kāore e pāngia e ngā rerekētanga pāmahana, e te haumākū rānei. Ka noho papatahi tonu i roto i te whakamahinga mō te wā roa, ā, kāore e ngāwari ki te waikura, ki te whakarerekē rānei. Ahakoa i raro i te pānga, ka pakaru noa te karāneti me te kore e pā ki te kounga, ki te tika rānei o te mata. Mā tēnei pakari ka whai hua nui te karāneti i roto i ngā taiao e hiahia ana kia inehia te pumau, te tino tika.
Mō ngā pereti mata kounga teitei, pērā i te Wāhanga 000 me te Wāhanga 00, kāore i te tūtohutia kia whakamahia ngā āhuatanga whakahaere pērā i ngā kakau hiki hei karo i te pānga ki te tika o te mata mahi. Mena e hiahiatia ana he whakaurunga miro, he awaawa rānei ki ngā pereti Wāhanga 0, Wāhanga 1 rānei, me noho tonu te hohonu ki raro i te mata hei ārai i te hē. Ko te taratara mata e whakaaetia ana (Ra) o te mata mahi kei waenganui i te 0.32 me te 0.63 μm, ko ngā taha ka eke ki te 10 μm. Hei tāpiri, ko te manawanui poutū o ngā taha tata e rite ana ki te paerewa GB/T1184 Wāhanga 12, e whakarite ana i ngā whanaungatanga āhuahanga tika puta noa i ngā mata ine katoa.
He mea nui te whakamahinga tika me te tiaki kia mau tonu ai te tika o ngā pereti mata karāhe. Me whakamahi i roto i te taiao ma, e whakahaeretia ana te pāmahana, me te tiaki i te pānga, me te horoi i ia wā kia tangohia ai te puehu me te paru. Ina whakahaerea tika, ka tukuna e ngā pereti mata karāhe te pumau me te roa o te ora, ā, he turanga pono mō te ine me te tirotiro tino tika i roto i te ahumahi hou.
I ZHHIMG, he tohunga mātou ki te hanga me te whakatikatika i ngā pereti mata karāhe tino tika e tutuki ana i ngā paerewa o te ao. Mā ā mātou tukanga hanga matatau, te mana whakahaere kounga tino pakari, me te whakaputanga kua whakamanahia e ISO ka whakarite kia tukuna e ia pereti karāhe te tika me te mahi pumau e whakawhirinakihia ana e ngā miihini me ngā taiwhanga o te ao.
Wā tuku: Whiringa-ā-rangi 11-2025