Ko ngā rauemi uku, e pā ana ki ngā uku ahumahi, ngā uku matatau rānei, e whakamahia ana i roto i ngā momo mara ahumahi, ko te kaha miihini me te ātete ki ngā kaha o waho (pēnei i te waikura) ngā whakaritenga mahi matua. Ko te ātete kakahu te tohu mahi matua hei ine i te rauemi uku. I te nuinga o te wā ka whakamahia e te tangata te pakeke hei aromatawai i te ātete kakahu me te kaha o ngā rauemi uku alumina. Arā, ko te teitei ake o te pakeke, ko te pai ake o te ātete kakahu. Nō reira, me pēhea te whakamātautau i ngā tawhā pakeke o ngā uku ātete kakahu?
Ko te pakeketanga tētahi o ngā āhuatanga tino nui, ā, e inehia ana i roto i ngā uku alumina. Ka taea te tautuhi hei ine i te ahotea hua o tētahi uku, rauemi rānei. Ko te pakeketanga te tohu o te ātete o tētahi uku ki te whati, te whakarerekētanga, te whakakīkī me te nekehanga. I te nuinga o te wā, e whakamahia whānuitia ana ngā tikanga Vickers me Knoop mō te whakamātautau pakeketanga o ngā uku. Ko te tikanga Vickers te mea tino noa. Ka ine i te pakeketanga o ngā uku, o ētahi atu rauemi rānei mā te ine i te rahi o thete kōhao i mahue i te kōhao. He pai mō ngā wāhanga iti me ngā wāhanga angiangi. Ka whakamahia he kōhao taimana me te kawenga māmā hei hanga kōhao ki runga i te rauemi e whakamatautauria ana. Ka taea hoki te uara pakeke te ine i te hohonutanga o te kōhao i puta mai i te kōhao.
E ai ki ngā hiahia rerekē o te mākete mō te mahi o ngā uku alumina, ka whakaputahia e Chemshun Ceramics te AL2O3 92%, te AL2O3 95%ngā rauemi uku ātete ki te kakahu o te aluminaKa pā te nui o te alumina ki te pakeke o te rauemi uku ki tētahi taumata, arā, ki te ātete ki te kakahu. Ka taea e ngā kaihoko te whiriwhiri i ngā uku ātete-kakahu me ngā nui o te alumina rerekē e ai ki ngā hiahia o te taiao mahi.
Wā tuku: Oketopa-13-2022