Ko te tikanga, he mea hanga ngā Paipa VJ ki te kowiri tira tae atu ki te 304, 304L, 316 me te 316Letc. I konei ka whakamāramahia ngā āhuatanga o ngā momo rauemi kowiri tira.
SS304
Ka hangaia te paipa kowiri tira 304 i runga anō i te paerewa ASTM o Amerika mō tētahi waitohu kowiri tira.
He rite te paipa kowiri tira 304 ki tā mātou paipa kowiri tira 0Cr19Ni9 (OCr18Ni9).
Ko te ngongo kowiri tira 304 te mea e whakamahia whānuitia ana i roto i ngā taputapu kai, ngā taputapu matū whānui, me te umanga pūngao ngota.
He paipa kowiri tira te paipa 304, he pai hoki mō te hanga taputapu me ngā wāhanga pai (ātete ki te waikura me te hanganga).
Ko te paipa kowiri tira 304 te paipa kowiri tira e whakamahia whānuitia ana, ā, he ātete wera hoki. E whakamahia ana i roto i ngā taputapu whakaputa kai, i ngā taputapu matū whānui, i te pūngao karihi, me ētahi atu.
Ngā whakatakotoranga matū o te ngongo kowiri tira 304: C, Si, Mn, P, S, Cr, Ni, (Nickel), Mo.
Te Rerekētanga Mahi o te Kowiri tira 304 me te 304L
He ātete ake te 304L ki te waikura, he iti ake te waro i roto i te 304L, he kowiri tira whānui te 304, ā, he whānuitia te whakamahinga i roto i te hanga taputapu me ngā wāhanga e hiahia ana ki te mahi whānui pai (ātete ki te waikura me te āheinga ki te hanga). He momo kowiri tira te 304L, he iti ake te ihirangi waro, ā, e whakamahia ana mō ngā mahi whakarewa. Nā te iti o te ihirangi waro ka whakaitihia te maturuturunga o ngā waro i roto i te rohe e pāngia ana e te wera e tata ana ki te whakarewa, ka arahi pea ki te waikura intergranular (te memeha o te whakarewa) i roto i te kowiri tira i roto i ētahi taiao.
He whānuitia te whakamahinga o te 304, he pai te ātete ki te waikura, te ātete ki te wera, te kaha ki te pāmahana iti me ngā āhuatanga miihini; he pai te tukatuka wera, pērā i te tā me te piko, me te kore e whakapakeke i te maimoatanga wera (kāore he aukume, te pāmahana -196℃-800℃).
He tino pai te ātete o te 304L ki te waikura rohe witi i muri i te whakarewanga, i te whakamamae rānei i te ahotea: ka taea tonu te pupuri i te ātete waikura ahakoa kāore he maimoatanga wera, ko te pāmahana whakahaere -196℃-800℃.
SS316
He pai anō hoki ngā āhuatanga horo o te maitai kore waikura 316 ki te hauota, nō reira he mea whakamahi noa i roto i ngā taiao moana.
Te wheketere ngongo maitai kore waikura ātete
He pai ake te ātete ki te waikura i te 304 kowiri tira, ā, he pai te ātete ki te waikura i roto i te tukanga whakaputa penupenu me te pepa.
He ātete anō hoki te maitai kore waikura 316 ki ngā āhuatanga moana me ngā āhuatanga ahumahi kaha. He ātete wera te maitai kore waikura 316 ki te 1600 nekehanga i raro i te whakamahinga kore haere tonu, ā, he ātete wera hoki ki te 1700 nekehanga i raro i te whakamahinga tonu.
I roto i te whānuitanga o te 800-1575 nekehanga, he pai ake kia kaua e whakamahia tonutia te kowiri tira 316, engari i roto i te whānuitanga pāmahana i waho o te whakamahinga tonu o te kowiri tira 316, he pai te ātete wera o te kowiri tira.
He pai ake te ātete o te maitai kore waikura 316 ki te maturuturunga o te warowaihā i tērā o te maitai kore waikura 316, ā, ka taea te whakamahi i roto i te awhe pāmahana i runga ake nei.
He pai te mahi whakarewa o te maitai kore waikura 316. Ka taea te whakarewa mā te whakamahi i ngā tikanga whakarewa paerewa katoa. Ka taea te whakamahi whakarewa i runga i te whakamahinga o te tokotoko whakakī maitai kore waikura 316Cb, 316L, 309CB rānei, te whakarewa hiko rānei. Hei whiwhi i te ātete waikura pai rawa atu, me whakamahana te wāhanga whakarewa o te maitai kore waikura 316 i muri i te whakarewatanga. Kāore e hiahiatia te whakamahana i muri i te whakarewatanga mēnā ka whakamahia te maitai kore waikura 316L.
Ngā whakamahinga noa: ngā taputapu penupenu me te pepa, ngā whakawhiti wera, ngā taputapu tae, ngā taputapu whakawhanake kiriata, ngā paipa, me ngā rauemi mō te taha waho o ngā whare tāone i ngā takutai moana.
Kowiri tira ārai-huakita
I te whanaketanga o te ōhanga, kua whānui haere te whakamahinga o te kowiri tira i roto i te umanga kai, ngā ratonga kai me te oranga whānau, ā, e tumanakohia ana, i tua atu i ngā taputapu whare me ngā rihi kowiri tira, he kanapa, he ma hoki ngā āhuatanga hou, engari he pai hoki te mahi harore, te ārai huakita, me te whakahoromata.
E mōhio ana tātou katoa, ko ētahi konganuku, pērā i te hiriwa, te parahi, te bismuth me ētahi atu, he pānga patu huakita, he pānga patu huakita, ko te mea e kiia nei ko te kowiri tira he kowiri tira he mea hanga ki te kowiri tira, ā, ko te nui o ngā huānga e tika ana ka tāpirihia ki te kowiri tira he pānga patu huakita (pērā i te parahi, te hiriwa), ka puta te maitai i muri i te maimoatanga wera patu huakita, me te mahi tukatuka pumau me te mahi patu huakita pai.
Ko te parahi te huānga matua o te ārai mate huakita, ko te nui o te tāpiri me whai whakaaro ki te āhuatanga ārai mate huakita anake, engari me whakarite hoki kia pai, kia pumau hoki ngā āhuatanga tukatuka o te maitai. Ka rerekē te nui o te parahi pai rawa atu i runga i ngā momo maitai. Kei te Ripanga 10 te hanganga matū o te maitai kore waikura ārai mate huakita i whakawhanakehia e Nissin Steel Hapanihi. 1.5% te parahi ka tāpirihia ki te maitai ferritic, 3% ki te maitai martensitic me te 3.8% ki te maitai austenitic.
Wā tuku: Hanuere-05-2022
