Ukushiselaigesi yokuvikela exubileiklanyelwe ukuthuthukisa ikhwalithi yama-weld. Amagesi adingekayo kugesi exubile nawo angamagesi avamile okuvikela ukushisela njengeumoya-mpilo, ikhabhoni dayoksayidi, i-argon, njll. Ukusebenzisa igesi exubile esikhundleni segesi eyodwa ukuvikela ukushisela kunomphumela omuhle wokucwenga kakhulu amaconsi ancibilikisiwe, ukukhuthaza ukushelela kokushisela, ukuthuthukisa ukwakheka, nokunciphisa izinga lama-pores, futhi kuthandwa kakhulu ekushiseleni, ekusikeni nakwezinye izimboni.

Njengamanje, okuvame ukusetshenziswa kakhuluamagesi axubileingahlukaniswa ngamagesi axubile amabili kanye namagesi axubile amathathu ngokwezinhlobo zamagesi axubile.

Isilinganiso sengxenye ngayinye kuhlobo ngalunye lweigesi exubileingahluka ngobukhulu, okunqunywa kakhulu yizici eziningi ezifana nenqubo yokushisela, izinto zokushisela, imodeli yentambo yokushisela, njll. Ngokuvamile, lapho izidingo zekhwalithi yokushisela ziphakeme, kulapho izidingo zobumsulwa begesi eyodwa esetshenziswa ukulungiselelaigesi exubile.

Igesi Ehlanganisiwe Yezingxenye Ezimbili

I-Argon+Oksijini

Ukwengeza inani elifanele leumoya-mpiloUkuze i-argon ithuthukise ngempumelelo ukuzinza kwe-arc futhi icwenge amaconsi ancibilikisiwe. Izakhiwo ezisekela ukushiswa komoya-mpilo zingakhuphula izinga lokushisa lensimbi echibini elincibilikisiwe, zikhuthaze ukugeleza kwensimbi, zinciphise amaphutha okushisela, zenze ukushisela kube bushelelezi, futhi zisheshise isivinini sokushisela futhi zithuthukise ukusebenza kahle kokushisela. Ngaphezu kwalokho, igesi yokuvikela umoya-mpilo + i-argon inokusetshenziswa okubanzi futhi ingasetshenziswa ukushisela insimbi yekhabhoni, insimbi ephansi ye-alloy kanye nensimbi engagqwali enobukhulu obuhlukahlukene.

I-Argon+i-Carbon Dioxide

I-carbon dioxide ingathuthukisa amandla okushisela kanye nokumelana nokugqwala, kodwa igesi yokuvikela i-carbon dioxide emsulwa ichitheka kakhulu, okuyinto engasizi ngalutho ekusebenzeni kwabasebenzi. Ukuyixuba ne-argon ezinzile kunganciphisa ngempumelelo izinga lokuchitheka kwensimbi. Ukusebenzisa izilinganiso ezahlukene zegesi yokuvikela i-oxygen + argon kunezinzuzo ezisobala zokushisela insimbi yekhabhoni kanye nensimbi engagqwali.

I-Argon+Hydrogen

I-hydrogeniyigesi esekela ukushisa enciphisayo engakwazi nje ukwandisa izinga lokushisa le-arc, isheshise isivinini sokushisela, futhi ivimbele ukusika okunganele, kodwa futhi inciphise amathuba okwakheka kwama-CO pores futhi ivimbele amaphutha okushisela. Inemiphumela emihle kakhulu yokushisela kuma-alloy asekelwe ku-nickel, ama-alloy e-nickel-copper, kanye nensimbi engagqwali.

Izingxenye Ezintathu Zegesi Exubile

I-Argon+Oksijini+I-Carbon Dioxide

Lena ingxube yegesi yezingxenye ezintathu esetshenziswa kakhulu, enemiphumela yokuvikela ehlanganisiwe yengxube yegesi yezingxenye ezimbili ezingenhla.I-oxygenkusiza ekushiseni, kungacwengisisa amaconsi ancibilikisiwe, kuthuthukise ikhwalithi yokushisela kanye nesivinini sokushisela; i-carbon dioxide ingathuthukisa amandla okushisela kanye nokumelana nokugqwala, kanti i-argon inganciphisa ukuchitheka. Ukuze kushiselwe insimbi yekhabhoni, insimbi e-alloy ephansi kanye nensimbi engagqwali, le ngxube yegesi ye-ternary inomphumela omuhle kakhulu wokuvikela.

I-Argon+Helium+Carbon Dioxide

I-Heliumingakhuphula amandla okushisa, ithuthukise ukugeleza kwechibi elincibilikisiwe futhi ikhuthaze ukwakheka kwe-weld. Kodwa-ke, ngenxa yokuthi i-helium iyigesi engasebenzi, ayinawo umthelela ekushisweni kwensimbi ye-weld nge-oxidation kanye ne-alloy. Ngakho-ke, ingasetshenziswa ekushiseni i-arc ye-carbon steel kanye ne-low alloy steel pulse jet arc, insimbi enamandla aphezulu, ikakhulukazi ukushiswa kwe-all-position short-circuit transition, kanye nokushiswa kwe-arc short-circuit yensimbi engagqwali ngokulungisa izilinganiso ezahlukene.