He mea nui te mahi a ngā koranu tuku iho i roto i te hanga konganuku, ahakoa he kowiri tira e whakamahia ana i roto i ngā taputapu hauora, he kaimoana rānei, ko tētahi o ngā whakatupuranga o ngā maitai mahi-teitei i whakawhanakehia i roto i ngā tekau tau kua pahure ake nei mō te umanga motuka, ko ngā konganuku pēnei i te konumohe me te titanium, he nui te ōwehenga kaha ki te taumaha, ā, he ātete nui ki te waikura, he mea tino pai mō ngā tono i roto i te rererangi, te whakamahine hinu me ngā umanga matū.
E pā ana hoki tēnei ki ētahi koranu maitai waro, inā koa ngā koranu he nui te waro me te konupora. I runga i te nui o ngā huānga koranu, he pai ētahi o ēnei mō te hangangā āputa, ngā taputapumengā paipai roto i ngā whare hanga matū me te hinu. Kotahi te mea e rite ana i roto i ēnei katoa: me ngāwari te whakamahi i ngā rauemi e whakamahia ana i roto i ēnei tono hei tu atu i te pakarukaru me te pakaru waikura ahotea (SCC).
Ko ngā whakahaere paerewa pēnei i te American Society of Manufacturing Engineers (ASME) me te ASTM Intl. (i mua ko te American Society for Testing and Materials) e whakarato ana i ngā aratohu mō tēnei kaupapa. E rua ngā waehere ahumahi e pā ana-Kohua ASMEme te Ipu Pēhanga (BPVD) Wāhanga VIII, Wāhanga 1, me te ASME B31.3, Ngā Paipa Tukanga - aro ki te maitai waro (tetahi mea kei roto te 0.29% ki te 0.54% waro me te 0.60% ki te 1.65% konupora, ngā rauemi kei roto te rino). he ngāwari te whakamahi mō ngā āhuarangi wera, ngā rohe mahana me ngā pāmahana iti iho i te -20 nekehanga Fahrenheit. Heoi, nā ngā hekenga tata nei i te pāmahana taiao kua arahina ki te tirotiro tata atu i ngā rahinga me ngā ōwehenga o ngā momo huānga microalloying e whakamahia ana i roto i te hanga o aua flanges, ngā hononga me ngā ngā paipa maitai api.
Tae noa ki ēnei wā tata nei, kāore a ASME me ASTM i hiahia ki te whakamātautau pānga hei whakaū i te ngāwari o te maha o ngā hua maitai waro e whakamahia ana i ngā pāmahana iti iho i te -20 nekehanga Fahrenheit. Ko te whakatau ki te whakakore i ētahi hua e ahu mai ana i ngā āhuatanga hītori o te rauemi. Hei tauira, ina ko te pāmahana hoahoa whakarewa iti rawa (MDMT) he -20 nekehanga Fahrenheit, ka kore e whakaaetia te whakamātautau pānga nā te mea ko tana mahi tuku iho i roto i aua tono.
Wā tuku: 19 Paenga-whāwhā 2023