I-Metal Inert Gas (MIG) yokushisela i-i-arc weldinginqubo esebenzisa i-electrode yocingo eqinile eqhubekayo eshisiswe futhi ifakwe ku-weld pool isuka kusibhamu esishiselayo.Izinto ezimbili eziyisisekelo zincibilika ndawonye zenze ukuhlanganisa.Isibhamu siphakela igesi evikelayo eduze kwe-electrode esiza ukuvikela i-weld pool ekungcoleni okuhamba emoyeni.
I-Metal Inert Gas (MIG) yokushisela yaqala ukugunyazwa e-USA ngo-1949 yokushisela i-aluminium.I-arc ne-weld pool eyakhiwe kusetshenziswa i-electrode yocingo engenalutho yayivikelwe igesi ye-helium, eyayitholakala kalula ngaleso sikhathi.Kusukela cishe ngo-1952, inqubo yaduma e-UK yokushisela i-aluminium isebenzisa i-argon njengegesi evikelayo, kanye nezinsimbi zekhabhoni zisebenzisa i-CO2.Izingxube ze-CO2 ne-argon-CO2 zaziwa njengezinqubo zegesi esebenzayo yensimbi (MAG).I-MIG iyindlela ekhangayo ye-MMA, enikeza amanani aphezulu okubekwa kanye nokukhiqiza okuphezulu.
Izici Zenqubo
Ukushisela kwe-MIG/MAG kuyindlela eguquguqukayo elungele kokubili izingxenye zeshidi elincanyana kanye nezingxenye eziwugqinsi.I-arc ishaywa phakathi kokuphela kwe-electrode yocingo kanye nendawo yokusebenza, iwancibilikisa ukuze kwakhe i-weld pool.Intambo isebenza njengomthombo wokushisa kokubili (nge-arc ekugcineni kocingo) kanye nensimbi yokugcwalisai-welding joint.Intambo ifakwa ngeshubhu yokuxhumana yethusi (ithiphu yokuxhumana) eqhuba i-welding current ocingweni.Ichibi lokushisela livikelwe endaweni ezungezile ngegesi evikelayo efakwe ngombhobho ozungeze ucingo.Ukukhetha igesi yokuvikela kuncike ezintweni ezishiselwe kanye nesicelo.Intambo ifakwa esondweni nge-motor drive, futhi i-welder ihambisa ithoshi yokushisela emugqeni ohlanganyelwe.Izintambo zingase ziqine (izintambo ezidonsa kalula), noma zibe nezintambo (izinhlanganisela ezakhiwe emgodleni wensimbi nge-flux eyimpuphu noma ukugcwaliswa kwensimbi).Izinto ezisetshenziswayo ngokuvamile zinenani elincintisanayo uma kuqhathaniswa nalezo zezinye izinqubo.Inqubo inikeza ukukhiqiza okuphezulu, njengoba ucingo luphakelwa ngokuqhubekayo.
I-Manual MIG/MAG welding ngokuvamile ibizwa ngokuthi inqubo ye-semi-automatic, njengoba izinga lokuphakelayo kwezintambo nobude be-arc kulawulwa umthombo wamandla, kodwa isivinini sokuhamba kanye nesimo sezintambo zingaphansi kokulawulwa ngesandla.Inqubo ingase futhi yenziwe ngomshini lapho yonke imingcele yenqubo ingalawulwa ngokuqondile umshiseli, kodwa ingase idinge ukulungiswa ngesandla ngesikhathi sokushisela.Uma kungekho ukungenelela okwenziwa ngesandla okudingekayo ngesikhathi sokushisela, inqubo ingabizwa ngokuthi i-othomathikhi.
Inqubo ngokuvamile isebenza ngentambo eshajwe kahle futhi exhunywe kumthombo wamandla oletha i-voltage engaguquki.Ukukhethwa kobubanzi bentambo (ngokuvamile phakathi kuka-0.6 no-1.6mm) kanye nesivinini sokuphakela kwentambo kunquma i-welding current, njengoba izinga lokushiswa kwentambo lizokwakha ukulingana nesivinini sokuphakelayo.
Isikhathi sokuthumela: Oct-18-2021