Ngā Wāhanga Eke mō ngā Mīhini Ahuwhenua Whakaritenga Kounga Teitei mō te Parau
Ko te hea parau, e mōhiotia ana ko te mata parau, ko te pito koko rānei, he wāhanga e ātete ana ki te pakaru me te pakū e tāutahia ana ki mua i te mata o raro o te tinana parau. I te wā e whakamahia ana, ka tapahia tika ki roto i te oneone, ko te mahi matua he tapatapahi i te whenua me te tiaki i te hea parau matua. Ko tōna pito koi o mua ka whakaiti i te ātete, ko te whakarewa maitai koranu ātete-kakahu he mea whakamahi noa hei ātete i te waku kaha mai i te oneone me ngā kōhatu. Hei wāhanga matua e pā ana ki te oneone, ko tōna koi me te ātete ki te pakaru ka pā tika ki te pumau o te hohonutanga o te parau me te whakapaunga wahie, me whakakapi tonu.
I te wā e parau ana, ka puta tika te waku kaha me te pānga o te pito parau ki te onepu, te kirikiri, me ngā pakiaka hua i roto i te oneone, ka waiho koia te wāhanga tere rawa te pakaru o te parau katoa. Ko tōna mahi ka whakatau tika i te kounga o te whenua pāmu me te whakapaunga wahie. Ka taea e te pito parau kounga teitei te pupuri i te koki urunga koi, ka whakaiti nui i te ātete ki te kukume, ka āwhina i te tarakihana ki te penapena wahie, me te whakarite kia pumau te hohonu o te parau me te kapi piri. Engari, ko ngā pito parau kua pakaru me te pūngoi ka arahi ki te uaua ki te tomo ki te oneone, te papaku o te parau, te pikinga o te whakapaunga wahie, me te pā ki te kounga o te rui i muri mai.
He maha ngā wā ka hangaia ngā pito parau kounga teitei o ēnei rā ki te maitai boron, ki te maitai ātete-mau rānei i te koranu iti maha-huānga. I hangaia mā te tukanga whakarewa tika, mā te tukatuka tinei isothermal, mā te maimoatanga whakamahana rānei, ka whakakotahihia te hanganga whakarewa me te pakeke teitei me te pakari pai - he mārō te mata, ā, he ātete-mau, he pakari te tuara, ā, he ātete ki te whati. Ko ētahi hua papai he paparanga koranu tungsten carbide kua whakatakotoria ki runga i te mata hei hanga i te pānga o te mata huri-ake, e pupuri ana i te koi o te pito parau i te wā e mau ana, e haehae ana.
Me tino ōrite te whiriwhiri i te pito o te parau ki te tauira o te tinana o te parau, ā, me whiriwhiri te rauemi me te matotoru e tika ana i runga i te āhua o te oneone (oneone onepu, uku, whenua kirikiri). He mahi whakaaro nui te tirotiro auau me te whakakapi i ngā pito o te parau kua tawhito hei tiaki i te tinana o te parau, hei pupuri hoki i ngā mahi whai hua me te iti o te utu.
I roto i te poto, ko tēnei 'whao rino' ngaro, me tōna ake patunga tapu ātete-kakahu, e tiaki ana i te ngākau o ngā mīhini ahuwhenua me te tautoko i te tukanga tuatahi me te mea nui rawa atu i te mara.
