Te tukanga maka oparahi silicon: te rewa me te ringihanga.Ka whakarewahia te parahi Silicon i roto i te oumu whakauru waikawa.Ko te utu me whakamahana ki te 150 ~ 200 ℃ i mua i te maka ki roto i te oumu, ka horoia te parahi electrolytic, ka tunua ki te teitei o te wera me te whakakore i mua i te whakamahinga.Ko te hanganga o Si he 3.1%, ko Mn he 1.2%, ko te toenga ko Cu, me te Fe he 0.25% ko Zn he 0.3%.Te raupapa whangai: tuatahi taapirihia te 0.5% flux (waikawa boric + karaihe) o te nui o te utu, taapirihia te silicon crystalline, te konupora konupora me te parahi electrolytic, te whakanui ake i te pāmahana ki te 1250 ℃, te taapiri i te rino me te konutea, tae noa ki te piki o te pāmahana ki te 1300 ℃, ka mau mo te 10 min, ka tauira ka ringihia ki roto i te paraka whakamatautau kirikiri.Ki te hepohepo te paraka whakamatautau i waenganui i muri i te whakamataotanga, ko te tikanga he mea noa te koranu, ka werohia te para i waho o te oumu ka hipokina ki te perlite hei aukati i te waikura me te whakaawe.
Ko te pāmahana ringihanga ko 1090~1120 ℃.Mo nga waahanga nui angiangi-taiepa, he mea tika kia tango i runga i te werohanga o runga, i te taha ranei o te taha werohanga i te punaha keeti.Ka nui ake te pāmahana ringihanga ki te 1150 ℃, ka ngawari te pakaru o te wera, i te wa e heke iho ana te pāmahana ringihia i raro i te 1090 ℃, he ngawari te puta mai o nga hapa o raro.
Ka whakatauritea ki te parahi tine (Sn 9%, Zn 4%, Cu), ko te 55 ℃ te awhe solidification o te parahi silicon, i te mea ko te parahi tine he 146 ℃, no reira he teitei ake te wai o te parahi i to te parahi tine.Ka kitea ko te parahi silicon he teitei ake i te parahi tine i te pāmahana ringihanga kotahi.
Ko te mahi whakahiato o te parahi silicon, ko te mahi whakahiato o nga momo koranu parahi ka wehea kia 4 nga karaehe i runga i o raatau pai me o raatau kino, he pai te tohu 1, he pai te karaehe 2, he pai te karaehe 3 ma te mahi motuhake, he kore pai te karaehe 4, he karaehe 3 te tiini parahi, ko te parahi silicon he tohu 1.
Ka whakatauritea ki etahi atu koranu parahi, he iti ake te kawe o te waiariki o te parahi silicon me te kore e hiahiatia kia whakamahana i mua i te whakapiri, engari he pakaruhanga waiariki i roto i te awhe o te 815 ~ 955 ℃.Heoi, mena he pai te kounga o te pereti maka, ara, te pereti whakarewa i muri i te tango i nga tikanga whakapai hangarau, kua kitea e nga mahi karekau e pakaru te wera ki tenei rohe pāmahana.
Ka taea e te parahi Silicon te whakapiri hau, te whakapiri arc, te TIG a-ringa me te MIG.
Wā tuku: Akuhata-04-2022