Ko te paparanga mahi matua o te tī maitai uku alumina ātete-kakahu ko te arai uku i hangaia ki te alumina parakore-teitei (α-Al₂O₃). He hanganga karaihe korundum pumau tēnei rauemi, me te pakeke e eke ana ki te HRA 85, neke atu rānei (Vickers hardness HV 1000-1600) me te mātotoru o te 3.6-3.9 g/cm³. Ko te mahi matua o te arai uku alumina ko te ātete i te horo nui o ngā matūriki totoka i ngā wāhi whakawhiti me te hanumi o ngā paipa. Kua whakamatautauria tōna ātete kakahu i roto i te taiwhanga kia 266 ngā wā i te maitai manganese me te 171.5 ngā wā i te rino maka konupora-teitei. E whakaatu ana ngā raraunga tono ahumahi ka taea e tēnei arai te whakaroa i te roa o te ora o ngā paipa neke atu i te tekau ngā wā. Hei tāpiri, he pumau te matū o te alumina, ā, he koretake hoki, e tuku ana i te ātete ki ngā waikawa, ngā kawakore, ngā tote, me ngā mea rauropi i roto i ngā awhe pāmahana me te kukū motuhake.
Ka whakamahia ngā tī maitai uku kua whakakikoruatia ki te uku alumina ātete-kakahu puta noa i ngā momo ahumahi kakahu-nui. I roto i ngā pūnaha hiko wera, ka whakamahia ēnei i roto i ngā paipa kawe paura waro, ngā pūnaha kuru, ngā paipa tango pungarehu, me ngā pūnaha tango puehu. I roto i te umanga keri, he pai mō te kawe paru, te kawe para, te kawe kukū, me ngā paipa kawe waro ma i roto i ngā tipu whakarite waro taumaha-waenga. I roto i te mara whakarewa rino me te maitai, ka whakamahia ēnei i roto i ngā pūnaha tango puehu oumu pupuhi, ngā raina kawe para, me te kawe rauemi i te wā o ngā tukanga whakarewa. I roto i te umanga sima, ka whakamahia ēnei i roto i ngā pūnaha kawe hau mō te paraoa mata, te kinker, me te pungarehu rere. I roto i te rāngai matū, he pai mō ngā paipa kawe rauemi waikura me te whakakoi. I ngā tauranga, ka whakamahia ēnei mō te kawe paru me te paru. Hei tāpiri, ka taea te whakamahi i tēnei hua mō ngā tono motuhake pēnei i te kawe konumohe rewa.
I te wā e whiriwhiria ana, me whai whakaaro ki ngā āhuatanga pēnei i ngā āhuatanga reo, te rahi o te matūriki, te pāmahana kawe, me te koki pānga hei whakatau i te matotoru o te paparanga uku (te tikanga 4-20mm), te parakore o te alumina, me te tikanga hononga paipa o waho (he flanged, he mea whakarewa, me ētahi atu). Ahakoa he nui ake te haumitanga tuatahi mō tēnei hononga i ngā paipa maitai paerewa, ko tōna roanga ratonga me te whakaiti nui i te wā kore mahi me ngā utu tiaki he otinga tino whai hua mō ngā āhuatanga pakaru me te waikura kino.
Wā tuku: Maehe-14-2026