Te whiriwhiri i ngā rauemi o te tuanui oumu. I roto i te oumu ahumahi, ko te pāmahana o te tuanui oumu he tata ki te 5% teitei ake i te pakitara oumu. Arā, ina 1000°C te pāmahana ine o te pakitara oumu, he teitei ake te tuanui oumu i te 1050°C. Nō reira, i te wā e whiriwhiri ana i ngā rauemi mō te tuanui oumu, me whakaaro nui ake ki te āhuatanga haumaru. Mō ngā oumu ngongo he teitei ake te pāmahana i te 1150°C, me 50-80mm te matotoru o te mata mahi o te tuanui oumu, he paparanga huruhuru muka uku zirconium, ā, whai muri ko te huruhuru muka uku alumina-nui he matotoru 80-100mm, ā, ko te matotoru e toe ana he 80-100mm te muka uku konumohe noa. Ka urutau tēnei arai hiato ki te hekenga o te pāmahana i roto i te tukanga whakawhiti pāmahana, ka whakaiti i te utu, ka whakapai ake i te roa o te ora o te arai oumu.
Hei whakatutuki i te roa o te ora mahi me te pānga pai ki te penapena hiko mō te whakamahana me te hiri o te tihi oumu whakamahana ngongo, me tino whai i ngā tikanga wera motuhake o te oumu. I taua wā anō, ko ngā momo hua huruhuru muka uku me ngā hangarau me ngā tikanga maimoatanga ohuruhuru muka uku me whai whakaaro hoki ki te whakamahinga i ngā wāhanga rerekē o te oumu.
Wā tuku: Hakihea-06-2021
