Ko ngā pūnaha paipa ahumahi e kawe ana i ngā rauemi whakakoi—pērā i te paura waro, te pungarehu rere, te paru kohuke, te clinker sima, me ngā matūriki matū—e tūtaki ana ki tētahi wero tonu: te pakaru o te pakitara o te paipa, ka pakaru wawe, ka mutu te mahi, ka piki haere hoki ngā utu tiaki. Ahakoa kua whakapakeketia, kua whakakotahitia rānei ngā paipa maitai waro tuku iho, he maha ngā wā ka roa te ora o te mahi i roto i ngā marama i raro i ngā āhuatanga pakaru kino. Ko te paipa uku alumina ātete-kakahu (e kiia ana ko te paipa hiato kua whakakikoruatia ki te uku) ka aro atu ki tēnei raruraru mā te huarahi hangarau rauemi: te whakakotahi i te pakeketanga nui me te koretake matū o ngā uku alumina parakore teitei me te pakari hanganga o te anga o waho o te maitai.
Ko ngā uku Alumina (Al₂O₃) kei roto i ngā uku hanganga matatau e whakamahia whānuitia ana mō ngā mahi tiaki i te kakahu. Ko tā rātou mahi tino pai i ahu mai i te hanganga karaihe hexagonal α-Al₂O₃ e piri ana, e whakarato ana i te rauemi ki te pakeketanga me te kaha ā-ringa tino pai.
Ngā paipa uku ātete-mau o te konumohe, he mea hanga ki ngā arai konumohe waikura (Al₂O₃) parakore-teitei e herea ana ki tētahi anga maitai hanganga, ā, he ātete tino pai ki te kakahu whakakoi, te horo pānga, me te waikura matū. Me te pakeke Mohs o te 9, te kaha pēhi neke atu i te 850 MPa, me te roa o te ora ratonga 10 ki te 30 ngā wā i ngā paipa maitai tuku iho, kua noho ēnei paipa hiato hei paerewa ahumahi mō ngā pūnaha kawe hau i roto i te keri, te whakaputa hiko, te hanga sima, te hanga maitai, me te tukatuka matū.
Wā tuku: Mei-18-2026