Ko ngā taha kua wera me te kanapa rerekē (e pā ana ki ngā mura rerekē, ki te para rānei e kanapa ana i raro i te tapahi) he take noa i roto i te tapahi i te whakarewa laser. He tohu ēnei i ngā tukanga tapahi kore pumau, i te nui rawa rānei o te kaha e whakaurua ana, e arahi ana ki te wera nui me te rewa. Kei raro nei he aratohu māmā, taahiraa-i-te-taahiraa hei tautuhi me te whakatau i te raruraru.
I. Ngā Take Matua
Ko ngā taha kua wera me te kākano e kanapa rerekē ana nā te nui o te wera e whakaurua ana, te kore rānei e tino marara te wera. Ko ngā take motuhake ko:
1. Ngā Take Hau (Ngā Mea Tino Noa)
- Te korenga o te pēhanga hau: Kāore e taea e ngā hau āwhina (O₂, N₂, hau) te pupuhi wawe i te konganuku rewa, ka puta te putunga paru me te tahunga tonu.
- He iti te parakore o te hau: Ka puta te waikura i te N₂ poke (hei tauira, me te O₂) mō te maitai kore waikura/konumohe, ka nui ake te wera me te tahunga.
- Momo hau hē: Whakamahia te O₂ mō te maitai waro (āwhina i te tahu) me te N₂ tino parakore mō te maitai kore waikura (ārai i te waikura).
2. Ngā Hapa Tawhā Tukanga
- Te kaha nui rawa o te taiaho: Ka rewa rawa ngā rauemi.
- Tere tapahi puhoi: Ka roa ake te pānga o te taiaho, ka nui haere te wera.
- Tūnga arotahi hē: Ka whakaiti i te mātotoru pūngao, ka whānui ake ngā tapahi, ka whakawhanui ake hoki i ngā rohe e pāngia ana e te wera.
- Ngā raruraru o te pūwero: Ka whakararuraru te rere o te hau i te rahi kore ōrite o te pūwero, te teitei kore tika, te pakaru rānei.
3. Ngā Raru Taputapu/Kaiwhakapau
- Ngā karāhe poke (ngā karāhe tiaki/arotahi): Whakaitihia te kaha o te taiaho, ka nui ake te whakamahinga o te mana (ka kino ake te wera).
- Pupuhi kore e tū tika: Kāore i te ōrite te rere o te hau, ā, kāore e taea te tango tika i te paru.
4. Ngā Take Rauemi
- Hinu, waikura, paninga rānei i runga i ngā mata o te rauemi: Ka wera i te wā e tapahi ana, ka puta he wera tāpiri.
- Te hanganga o ngā rauemi: Me whai tautuhinga tawhā motuhake ngā konganuku whakaata-teitei/whakahaere-wera (Al, Cu).
II. Ngā Otinga Ā-Taumata-i-te-Taumata
Whāia tēnei raupapa hei whakatau i ngā raruraru (tīmata ki ngā raruraru māmā rawa, ngā raruraru tino auau):
Hipanga 1:Tirohia me te Arotau i ngā Tautuhinga Hauhanga (Te Tino Matua)
1. Pēhanga Hau
- Maitai waro (O₂): Whakarerekētia kia rite ki ngā taunakitanga a te kaihanga (he maha ngā wā ka wera te pēhanga mēnā kāore i te rawaka).
- Kowiri tira/konumohe (N₂/Ar): Whakanuia te pēhanga ki te 1.0–2.0 MPa (neke atu rānei, i runga i te matotoru) – ko te pēhanga teitei te mea nui hei tango i te konganuku rewa.
- Tirohia ngā raina hau: Tirohia mēnā he turuturu, he ārai, he iti rānei te pēhanga o te rango.
2. Te Parakore me te Momo o te Hau
- Kowiri tira: Whakamahia te N₂ me te parakore ≥99.9%.
- Maitai waro: Whakamahia te O₂ kounga ahumahi.
- Konumohe: Whakamahia te N₂ tino parakore, te hau kōpeke rānei.
3. Te Tiaki i te Pūwero
- Kōwhiria te rahi tika: Me nui ake ngā pūwero mō ngā rauemi matotoru (hei tauira, φ2.0mm/φ3.0mm).
- Whakakapia ki tētahi pūwero hou, kāore i pakaru (tērā pea he kōhao kua hē te āhua o ngā pūwero tawhito).
- Whakatikatikahia te teitei: Kia 0.5–1.5mm te tawhiti mai i te mata o te rauemi (whakamahia te whakatikatika-aunoa mēnā e wātea ana).
Hipanga 2:Arotauhia ngā Tawhā Tapahi
1. Tere Tapahi:Whakanuia te tere (i roto i te awhe e whakarite ana i te urunga katoa) hei whakaiti i te urunga mai o te wera. Āta karohia te tere rawa (ka kore e oti ngā tapahi).
2. Mana Reera:Whakaitihia te mana kia paku (tauritehia me ngā whakarerekētanga tere).
3. Tūnga Arotahi:
- -Tirohia te pukapuka taputapu mō ngā tūranga kua tūtohutia (e ai ki te rauemi/matotoru).
- Whakamātauria ngā tūranga (-2mm ki te +2mm) kia kitea ai te mea he maeneene rawa te tapahi, kāore he paru.
4. Aratau Pāpā:Mō ngā konganuku angiangi, mō ngā take werawera rānei, whakawhiti mai i te aratau taiaho tonu ki te aratau pāorooro (ka taea ai ngā wā whakamatao poto).
Hipanga 3:Tirohia ngā Taputapu
- Horoia ngā karaihe arotahi: Horoia ngā karaihe tiaki/arotahi i ia wā; whakakapia ngā mea kua pakaru.
- Tirohia te Whakaritenga o te Hiko: Me whakamana e ngā tohunga mēnā ka puta te hihi taiaho i te pokapū o te pūwero (me whakatikatika mēnā he rerekē te whakaritenga).
Hipanga 4:Whakaritea ngā Rauemi
Horoia te hinu, te waikura, ngā paninga rānei i ngā mata o te rauemi i mua i te tapahi.
Rārangi Arowhai Whakatau Rapanga Tere
1. Te Kaupapa Matua (Hau)
- He rawaka te pēhanga hau? (Whakanuia te pēhanga N₂ mō te maitai kore waikura!)
- He tika te momo hau e whakamahia ana? (O₂ mō te maitai waro, N₂ tino parakore mō te maitai kore waikura)
- He mea hou, kāore rānei i pakaru te pūwero? Kua whakaritea te teitei?
2. Te Matua Tuarua (Ngā Tawhā)
- He puhoi rawa te tere tapahi? (Whakamātauria te whakanui ake)
- He nui rawa te mana o te taiaho? (Whakamātauria kia whakaitihia)
- He tika te tūnga arotahi? (Ngā tūnga whakamātautau)
- Ka taea te whakamahi i te aratau pāorooro?
3. Te Kaupapa Matua Tuatoru (Ngā Taputapu/Ngā Rauemi)
- He ma ngā karaihe arotahi?
- -He ma te mata o te rauemi?
Ka taea te whakatau i te nuinga o ngā raruraru o te taha wera mā roto i ngā mahi o runga ake nei. Mēnā ka mau tonu ngā raruraru, whakapā atu ki te kaihanga taputapu mō te tautoko motuhake ki ngā rauemi/pūrere.
Wā tuku: Whiringa-ā-rangi-06-2025
