Ko ngā whakaritenga whānui mō ngā rauemi ātete-wera mō ngā oumu pewa hiko ko:
(1) Me teitei te ātete-wera. Neke atu i te 4000°C te pāmahana o te pewa, ā, ko te pāmahana o te hanga maitai he 1500~1750°C, i ētahi wā ka eke ki te 2000°C, nō reira me teitei te ātete-wera o ngā rauemi ātete-wera.
(2) Me teitei te pāmahana whakangawari i raro i te kawenga. Ka mahi te oumu hiko i raro i ngā āhuatanga kawenga pāmahana teitei, ā, me ātete te tinana o te oumu ki te mimiti o te maitai rewa, nō reira me teitei te pāmahana whakangawari o te rauemi ātete-wera.
(3) Me teitei te kaha pēhi. Ka pāngia te arai o te oumu hiko e te pānga o te utu i te wā e utu ana, te pēhanga pūmau o te maitai rewa i te wā e whakarewahia ana, te mimiti o te rere o te maitai i te wā e patohia ana, me te wiri miihini i te wā e whakamahia ana. Nō reira, me teitei te kaha pēhi o te rauemi ātete.
(4) Me iti te kawe wera. Hei whakaiti i te ngaronga wera o te oumu hiko me te whakaiti i te whakapaunga hiko, me iti te kawe wera o te rauemi ātete, arā, me iti te tauwehenga kawe wera.
(5) Me pai te pumau o te wera. I roto i ētahi meneti torutoru mai i te pato ki te utu i roto i te hanga maitai oumu hiko, ka tino heke te pāmahana mai i te 1600°C ki raro iho i te 900°C, nō reira me pai te pumau o ngā rauemi ātete wera.
(6) He ātete kaha ki te waikura. I te wā o te mahi hanga maitai, he kaha te pānga o te para, te hau oumu me te maitai rewa ki te waikura matū, nō reira me pai te ātete o ngā rauemi waikura ki te waikura.
Te whiriwhiringa o ngā rauemi ātete-waikura mō ngā pakitara taha
Ko ngā pereki MgO-C te tikanga e whakamahia ana hei hanga i ngā pakitara taha o ngā oumu hiko, kāore he pakitara whakamatao wai. Ko ngā wāhi wera me ngā raina para te mea tino kino rawa atu. Ehara i te mea ka tino waikura, ka memeha hoki i te maitai rewa me te para anake, ā, ka tino pāngia hoki e te miihini ina tāpirihia he para, engari ka pāngia hoki e te irahiko wera mai i te pewa. Nō reira, he mea hanga ēnei wāhanga ki ngā pereki MgO-C me te mahi tino pai.
Mō ngā pakitara taha o ngā oumu hiko me ngā pakitara whakamatao-wai, nā te whakamahinga o te hangarau whakamatao-wai, ka piki ake te kawenga wera, ā, ka tino kaha ake ngā tikanga whakamahi. Nō reira, me whiriwhiri ngā pereki MgO-C he pai te ātete ki te para, te pumau o te ru wera me te kawe wera teitei. Ko te ihirangi waro kei roto ko te 10%~20%.
Ngā rauemi ātete ahi mō ngā pakitara taha o ngā oumu hiko tino kaha
Ko ngā pakitara taha o ngā oumu hiko tino kaha (ngā oumu UHP) he mea hanga ki ngā pereki MgO-C, ā, ko ngā wāhi wera me ngā wāhi raina para he mea hanga ki ngā pereki MgO-C he tino pai te mahi (pērā i ngā pereki MgO-C waro-katoa). Ka whakapai ake i tōna roanga mahi.
Ahakoa kua whakaitihia te kawenga o te pakitara oumu nā te whakapainga o ngā tikanga whakahaere oumu hiko, he uaua tonu ki ngā rauemi ātete te whakaroa i te roa o te mahi a ngā wāhi wera ina whakamahia i raro i ngā tikanga whakarewa oumu UHP. Nō reira, kua whakawhanakehia, kua whakamahia hoki te hangarau whakamatao wai. Mō ngā oumu hiko e whakamahi ana i te pato EBT, ka eke te horahanga whakamatao wai ki te 70%, ā, ka tino whakaitihia te whakamahinga o ngā rauemi ātete. Ko te hangarau whakamatao wai hou e hiahia ana ki ngā pereki MgO-C me te kawe wera pai. Ka whakamahia te uku, ngā pereki konupūmā e herea ana ki te kapia me ngā pereki MgO-C (te ihirangi waro 5%-25%) hei hanga i ngā pakitara taha o te oumu hiko. I raro i ngā tikanga waikura kino, ka tāpirihia ngā antioxidants.
Mō ngā wāhi wera nui i tino pakaruhia e ngā tauhohenga redox, ka whakamahia ngā pereki MgO-C me te magnesite hanumi tioata nui hei rauemi mata, he nui ake i te 20% te ihirangi waro, me te anga waro katoa mō te hanganga.
Ko te whanaketanga hou o ngā pereki MgO-C mō ngā oumu hiko UHP ko te whakamahi i te tahu pāmahana teitei, kātahi ka whakakīia ki te uku hei whakaputa i ngā pereki MgO-C kua whakakīia ki te uku. E kitea ana i te Ripanga 2, ki te whakatauritea ki ngā pereki kāore i whakakīia, ka piki ake te ihirangi waro toenga o ngā pereki MgO-C kua whakakīia i muri i te whakakīia ki te uku me te whakapūmau waro anō mā te 1% pea, ka heke te porosity mā te 1% pea, ā, kua tino pai ake te kaha piko pāmahana teitei me te ātete pēhanga, nō reira he roa te mau.
Ngā rauemi ātete konupora mō ngā pakitara taha o te oumu hiko
Ka wehea ngā arai oumu hiko ki te kawakore me te waikawa. Ko te mea tuatahi ka whakamahia ngā rauemi ātete kawakore (pērā i te konupūmā me ngā rauemi ātete MgO-CaO) hei arai oumu, ko te mea tuarua ka whakamahia ngā pereki silica, te onepu kiripaka, te paru mā, me ētahi atu hei hanga i te arai oumu.
Kia mōhio: Mō ngā rauemi arai oumu, ka whakamahia e ngā oumu hiko kawakore ngā rauemi ātete kawakore, ā, ka whakamahia e ngā oumu hiko waikawa ngā rauemi ātete waikawa.
Wā tuku: Oketopa-12-2023
