Ngā Tikanga Whakarewa i Whakamahia i roto i te Hangarau Whakarewa
Ko te mahi whakarewa te pūtaiao e ako ana i ngā āhuatanga ā-tinana me te matū o ngā konganuku me ō rātou koranu. Ko tētahi āhuatanga nui o te mahi whakarewa ko te tukanga whakarewa, he tikanga mō te hono i ngā konganuku e rua, neke atu rānei mā te whakarewa i ō rātou mata me te tāpiri i ngā rauemi whakakī. Anei ētahi tikanga whakarewa e whakamahia whānuitia ana i roto i te mahi whakarewa:
1. Wehenga Hau Korekore (MIG/MAG)
Ko te MIG (Metal Inert Gas) me te MAG (Metal Active Gas) he tikanga whakarewa e rua e kiia ana he rite tonu nā te mea he rite tonu te kaupapa: he paparanga hau tiaki hei ārai i te poke o te hau i roto i te wāhi whakarewa. Ko te rerekētanga kei roto i te momo hau e whakamahia ana: Ka whakamahia e te MIG he hau kore mahi pērā i te argon, te helium rānei, ko te MAG ia ka whakamahia he hau hohe pērā i te waro hauhā.
Ko ngā painga o tēnei tikanga ko:
– He nui te whakaputanga me te pai o te urunga whakarewa.
– Ka taea te whakamahi ki ngā momo konganuku rerekē.
– He pai mō te whakarewa aunoa me te whakarewa ā-haurua-aunoa.
2. Te Whakarewa Āwhata Hiko (SMAW)
Ko te Whakarewa Āwhata Whakamarumaru (SMAW), e mōhiotia whānuitia ana ko te whakarewa āwhata hiko, he tikanga whakarewa e whakamahi ana i tētahi hiko kua pania hei whakarewa i te konganuku turanga me te rauemi whakarewa hei hanga hononga. Ka mahi anō hoki tēnei hiko kua pania hei tiaki i te konganuku rewa mai i te waikura me te poke o te hau.
Ko ngā painga o te whakarewa SMAW ko:
– Ka taea te whakamahi i runga i ngā momo tūranga whakarewa me te whakarewa.
– He tino ngāwari mō te mahi i roto i ngā ahumahi iti, i ngā kaupapa mara rānei.
– Kāore e hiahiatia he taputapu uaua atu.
Heoi, ko ōna ngoikoretanga matua ko ngā herenga whakaputa me te hiahia kia nui ngā pūkenga mai i ngā kaiwhakahaere.
3. Tungsten Inert Gas (TIG) Welding
Ko te TIG (Tungsten Inert Gas) te Gas Tungsten Arc Welding rānei (GTAW) he tikanga whakarewa e whakamahi ana i te hiko tungsten e kore e rewa. Ka whakamahia he pare hau korekore pērā i te argon, te helium rānei hei tiaki i te wāhi whakarewa mai i te poke.
Ngā painga o te tikanga TIG:
– He kounga teitei ngā hua o te whakarewanga, ā, he ātaahua te āhua.
– Ka taea te whakamahi hei whakarewa i ngā konganuku angiangi me ngā koranu tauhou pērā i te titanium.
– He tino pai te whakahaere i te wera me te urunga.
Heoi, ko tētahi o ngā ngoikoretanga matua ko te puhoi ake o te tere whakaputa i ētahi atu tikanga, ā, me nui hoki ngā pūkenga e hiahiatia ana.
4. Te Whakarewatanga Oxy-Acetylene
Ka whakamahia e te whakarewa hau wai te ranunga o te hāora me ngā hau acetylene hei whakaputa i te mura wera rawa. He maha ngā wā ka whakamahia tēnei tikanga mō te whakarewa, te tapahi, me te whakatika i te konganuku.
Ko ngā painga o te whakarewa hau wai ko:
– He tino māmā, he ngāwari hoki te nuku i ngā taputapu.
– He tino ngāwari ki ngā āhuatanga me ngā tūranga mahi rerekē.
– Ka taea te whakamahi mō ngā momo konganuku rerekē.
Heoi, me tino tupato te whakarewa hau wai nā te mea he tūponotanga ka pā mai te ahi me te pahūtanga e pā ana ki te whakamahinga o te hāora me ngā hau acetylene.
5. Te Whakarewatanga Plasma
He tikanga matatau te whakarewa plasma e whakamahi ana i te pewa hiko arotahi hei whakarewa i te konganuku. Mā te hau plasma ka whakakahangia tēnei oumu pewa, ā, ka puta he pāmahana tino teitei, ka taea ai te whakarewa tino tika.
Ko ngā painga matua o te whakarewa plasma ko:
– He whakarewa tere me te weronga hōhonu.
– Ka taea te whakamahi mō ngā konganuku matotoru me ngā konganuku angiangi.
– Te tirotiro pai i te rohe wera.
Heoi, he nui te utu o ngā taputapu whakarewa plasma, ā, me whai kaiwhakahaere motuhake kua whakangungua.
6. Te Whakarewatanga Whakaoho Waku (FSW)
He tikanga whakarewa hou te Whakarewa Whakaoho Waku, kāore e hiahiatia kia whakarewahia te konganuku. Engari, ka whakaputahia he wera e tētahi taputapu motuhake mā te waku, ā, ka whakakotahi i te konganuku mā te whakaoho i te rauemi i te hononga.
Ko ētahi o ngā painga o te FSW ko:
– He whakarewa me te iti o te hē me te ahotea toenga.
– Ka taea te whakarewa i ngā konganuku uaua ki te whakarewa mā ngā tikanga tuku iho, pērā i te koranu konumohe/litium.
– Te kounga whakarewa pumau, kaha hoki.
Heoi, e tika ana tēnei tikanga mō ngā hononga paparua, mō ngā hononga papatahi rānei he āhua rārangi, he āhua porowhita rānei.
7. Te Whakarewatanga Taiaho
Ka whakamahia e te whakarewa taiaho he pūtake mārama taiaho tino arotahi hei whakamahana me te whakarewa i te konganuku. He tino whai hua tēnei tikanga mō ngā mahi e hiahia ana kia tino tika te whakarewa.
Ko ngā painga o ngā tikanga whakarewa laser ko:
– He tino tika, he iti noa te wāhi e pāngia ana e te wera.
– He tino tere te whakarewa.
– He iti rawa te hē me te whakarerekētanga.
Ko te ngoikoretanga ko ngā taputapu utu nui me te hiahia mō ngā pūnaha haumaru motuhake hei whakahaere i ngā taiaho kaha-tiketike.
8. Te Whakarewatanga Ultrasonic
Ko te whakarewanga orooro he tikanga whakarewa e whakamahi ana i ngā wiri orooro auau-teitei hei whakakotahi i ngā rauemi e rua. He tikanga tēnei e whakamahia ana mō ngā kirihou, engari ka taea hoki te whakamahi ki ngā konganuku mama ake, pērā i te konumohe me te parahi.
Ngā painga matua o te whakarewa ultrasonic:
– He tere te tukanga, he torutoru hēkona noa iho te roa.
– Kāore e hiahiatia he whakauru wera, nō reira ka whakaitihia te mōrearea o te whakarerekētanga wera.
– He tino whai hua mō te whakaputa papatipu o ngā wāhanga iti.
Heoi, kāore tēnei tikanga e pai mō ngā konganuku matotoru me ngā konganuku mārō.
Ētahi atu Whakarewa
Ko ētahi atu tikanga whakarewa hei whakahua ko:
– Whakarewatanga Ira: Hei whakarewa i ngā rau whakarewa angiangi mā te pēhanga me te iahiko i tētahi pūwāhi iti.
– Te Whakarewa Āwhata Ruku (SAW): Te hanga whakarewa me te hiko e rewa tonu ana i raro i te paparanga o te rerenga rewa, e tika ana mō te hanga papatipu me te kounga pumau.
Whakamutunga
He rerekē ngā painga o ngā tikanga whakarewa i roto i te mahi whakarewa, ā, he pai mō ngā mahi motuhake. He mea nui kia whakaarohia ngā āhuatanga ā-tinana o ngā rauemi hei whakarewa, tae atu ki te taiao me ngā āhuatanga mahi, i te wā e whiriwhiri ana i te tikanga whakarewa tika. Ko te auahatanga tonu i roto i te hangarau whakarewa kei te whakapai tonu i te kounga, te whai huatanga, me te whai huatanga o te whakarewa, ka nui haere te matatau me te pono o te mahi whakarewa i roto i ngā momo ahumahi.
I te haere tonu o ngā whanaketanga hangarau, tera pea ka kitea e tātou ngā tikanga whakarewa hou ā muri ake nei, he pai ake, he haumaru ake, he iti ake hoki te utu. Nō reira, ko te mārama ki ngā hangarau whakarewa o nāianei me te ako tonu mō ngā auahatanga hou te mea nui mō ngā kaimahi whakarewa katoa.
