Te Whakahoutanga o te Oumu Whakamahana Porowhita

He tirohanga whānui mō te oumu tinei porowhita:
Ko te oumu tinei porowhita he momo oumu mahi tonu, ko te wahie he hau whakaranu, ā, ko ngā mura e whakaritea ana i runga i ngā pakitara mowhiti o roto, o waho hoki. Ka whakahaerehia i te pāmahana oumu noa o te 1000-1100 ℃ i roto i te hau whakaiti ngoikore i raro i te pēhanga paku pai. I mua i te whakahoutanga penapena-pūngao, ko te hanganga o te arai he pereki ātete-wera me te hanganga whakarewa taumaha.

Ko ngā raruraru o tēnei hanganga mō te whakamahinga roa:
1. Ka puta he rerekētanga nui ki te hanganga maitai o te oumu nā te nui o te matotoru o te rōrahi.
2. Ko te kawe wera nui o te arai oumu ka hua ake he pānga ngoikore o te whakamarumaru wera me te wera nui (tae atu ki te 150~170℃) i runga i te mata makariri o te oumu.
te tinana o te oumu, he tino moumou pūngao tēnei, ā, ka whakakino i te taiao mahi mō ngā kaimahi.
3. He uaua ki te arai oumu te whakakore i ngā hapa ā-roto o te whānui o waho i te pakitara o roto, me te whānui o roto i te
te pakitara o waho o ngā oumu porowhita.
4. Ka pā kino te ngoikore o te aro ki te wera ki te mahi a te rorohiko iti o ngā oumu porowhita, ā, ka pā kino hoki ki te kounga o te hua.

Ngā painga o ngā hua muka uku CCEWOOL i runga i ngā oumu porowhita:
1. He iti te mātotoru o te rōrahi: ko te taumaha o te arai kōwae takai he 20% noa iho o te taumaha o te arai ātete wera māmā.
2. Te iti o te kaha wera: ko te kaha wera o ngā hua muka uku he 1/9 noa iho o te arai ātete wera māmā, ka whakaiti i te ngaronga o te tiaki wera
o te arai o te oumu.
3. He iti te kawe wera: ko te tere whakawhiti wera o ngā hua muka uku he 1/7 o te tere whakawhiti wera o ngā muka uku māmā, ā, he 1/9 o te tere whakawhiti wera māmā.
arai, e whakapai ake ana i te tiaki wera me ngā pānga whakamahana o te arai oumu.
4. He pai te aro ki te wera: He pai ake te muka uku CCEWOOL mō te whakahaere aunoa o ngā oumu whakamahana.