1. Waro (C). Ko te waro te matū tino nui e pā ana ki te whakarerekētanga kirihou matao o te maitai. Ka nui ake te ihirangi waro, ka nui ake te kaha o te maitai, ā, ka iti ake te kirihou matao. Kua whakamātauhia mō ia 0.1% te pikinga o te ihirangi waro, ka piki ake te kaha tuku tata ki te 27.4Mpa; ka piki ake te kaha kume tata ki te 58.8Mpa; ā, ka heke te roa tata ki te 4.3%. Nō reira, he nui te pānga o te ihirangi waro i roto i te maitai ki te mahi whakarerekētanga kirihou matao o te maitai.
2. Manganese (Mn). Ka tauhohe te manganese ki te waikura rino i roto i te whakarewa maitai, ko te nuinga hei tango i te waikura o te maitai. Ka tauhohe te manganese ki te rino whanariki i roto i te maitai, ka taea te whakaiti i te pānga kino o te whanariki ki te maitai. Ka taea e te manganese whanariki kua hangaia te whakapai ake i te mahi tapahi o te maitai. Ka taea e te manganese te whakapai ake i te kaha kume me te kaha tuku o te maitai, ka whakaiti i te kirihou makariri, he mea kino ki te ahua kirihou makariri o te maitai. Heoi, he pānga kino te manganese ki te kaha ahua. Ko te pānga he tata ki te 1/4 noa iho o te waro. Nō reira, haunga ngā whakaritenga motuhake, kaua te nui o te manganese o te maitai waro e neke ake i te 0.9%.
3. Ko te silicon (Si). Ko te silicon te toenga o te deoxidizer i te wā e whakarewahia ana te maitai. Ina piki te ihirangi silicon i roto i te maitai ki te 0.1%, ka piki te kaha kume ki te 13.7Mpa. Ina neke atu te ihirangi silicon i te 0.17%, ā, he nui te ihirangi waro, he pānga nui ki te whakaiti i te kirihou makariri o te maitai. He pai te whakanui ake i te ihirangi silicon i roto i te maitai ki ngā āhuatanga miihini whānui o te maitai, inā koa te rohe pīngore, ka taea hoki te whakanui ake i te ātete o te maitai. Heoi, ina neke atu te ihirangi silicon i roto i te maitai ki te 0.15%, ka tere te hanga o ngā whakaurunga kore-whakarewa. Ahakoa ka whakamahanahia te maitai silicon teitei, e kore e whakangawari, e whakaiti hoki i ngā āhuatanga kirihou makariri o te maitai. Nō reira, hei tāpiri atu ki ngā whakaritenga mahi kaha teitei o te hua, me whakaiti te ihirangi silicon i te mea ka taea.
4. Te whanariki (S). He poke kino te whanariki. Ka wehea e te whanariki i roto i te maitai ngā matūriki tioata o te konganuku tetahi i tetahi, ā, ka puta he pakaru. Ka puta hoki i te aroaro o te whanariki te pakaru wera me te waikura o te maitai. Nō reira, me iti iho i te 0.055% te nui o te whanariki. Me iti iho i te 0.04% te maitai kounga teitei.
5. Whōkawa (P). He kaha te pānga o te whōkawa ki te whakapakeke i te mahi, ā, he tino wehewehe i roto i te maitai, ka whakanui ake i te pakarukaru o te maitai i te makariri, ā, ka whakaraerae i te maitai ki te horo waikawa. Ka whakaitihia hoki e te whōkawa i roto i te maitai te kaha ki te whakarerekē i te kirihou makariri, ā, ka pakaru te hua i te wā e kumea ana. Me whakahaere te nui o te whōkawa i roto i te maitai i raro i te 0.045%.
6. Ētahi atu huānga koranu. Ko ētahi atu huānga koranu i roto i te maitai waro, pērā i te Chromium, te Molybdenum me te Nickel, kei roto hei paru, he iti ake te pānga ki te maitai i te waro, ā, he tino iti hoki te ihirangi.
Te wā tuku: Hurae-13-2022