Arahanga Ukume Alumina Ātete-Kakahu mō ngā Taputapu Whakatipu Sima

I roto i te hanga sima, ka roa te pānga o ngā paipa kawe rauemi, ngā whare wehewehe, ngā awhiowhio, me ngā awaawa ki te tere tere me te kakahu reti, ka tere te ngaronga o ngā papa whakarewa me te pikinga o ngā utu tiaki mō te wā kore mahi. Mā te whakamahi i te arai uku alumina ātete-kakahu ka roa ake te ora o te mahi. Ka hangaia tēnei arai mā te whakamahana pāmahana teitei, me te ihirangi alumina kāore i raro iho i te 92%, te matotoru papatipu ≥3.60 g/cm³, te pakeke o Rockwell (HRA) i runga ake i te 85, me te rōrahi kakahu i raro iho i te 0.1 cm³ (kua whakamatautauria e ai ki te GB/T 8489-2006).

Ki te whakatauritea ki ngā pereti maitai ātete-mau tikanga (hei tauira, NM400), he 5–8 ngā wā teitei ake te ātete-mau o te arai uku alumina, me te iti o te tauwehenga waku o te mata (tata ki te 0.2–0.3 i raro i ngā āhuatanga maroke), ka whakaiti i ngā tūponotanga piri me te aukati rauemi. Ka whakapirihia ngā taera uku ki te pakitara o roto o te taputapu mā te whakamahi i te kapia epoxy, te piripiri kore-ora rānei, me te awhe pāmahana mahi mai i te -50°C ki te 300°C me te manawanui poto tae atu ki te 500°C. I raro i ngā āhuatanga noa o te tipu sima, ka roa ake te ora ratonga o te arai uku mai i te 6 marama ki te neke atu i te 36 marama.

Kua whakamahia angitu tēnei arai ki ngā wāhanga nui pērā i ngā awa whāngai mira, ngā ara ārahi wehewehe, ngā koeko porowhita, me ngā paipa kawe kirikiti i roto i ngā whare hanga sima. E whakaatu ana ngā raraunga mara i raro i te rahi matūriki rauemi toharite o te 30 mm me te tere raina o te 15 m/s, i muri i te 12 marama o te mahi tonu, ko te hohonu o te kakahu i runga i ngā mata taera uku he 0.2–0.5 mm anake, ā, ka whakaroahia ngā wā tiaki taputapu ki te whā ngā wā o te roanga taketake. Kei te wātea i roto i ngā pereti uku modular, i ngā papaki taera mosaic rānei, ka urutau te arai ki ngā taputapu me ngā piko me ngā āhua hanganga rerekē.

Te whakatairangaarai uku alumina ātete-kakahu i roto i ngā taputapu hangarau simaKa whakaitihia te whakamahinga o ngā wāhanga tāpiri me ngā ngaronga wā kore mahi, ka whakapai ake i ngā tere whakahaere whānui o ngā raina whakaputa. I te wā tāutanga, kia tino ma te mata o te papa, kia kore hoki he hinu; kaua e iti iho i te 24 hāora te roa o te whakamaroke piri (i te 25°C). Mō ngā koki pānga neke atu i te 45° i ngā wāhi maturuturu rauemi, ka tūtohutia he paparanga ārai hei whakapai ake i te ātete pānga. Kua whakauruhia tēnei hangarau ki roto i ngā paerewa hoahoa tiaki-mau maha i roto i te umanga sima.