Ukuweldaigesi yokukhusela exutyiweyoyenzelwe ukuphucula umgangatho wee-welds. Iigesi ezifunekayo kwi-mixed gas zikwazezona gesi ziqhelekileyo zokukhusela ii-welding ezifanaioksijini, umoya omdaka, i-argon, njl. Ukusebenzisa igesi exutyiweyo endaweni yegesi enye ukukhusela ukuwelda kunempembelelo entle yokucokisa amathontsi anyibilikisiweyo kakhulu, kukhuthaza ukugudiswa kokuwelda, ukuphucula ukwakheka, kunye nokunciphisa izinga leembobo, kwaye kuthandwa kakhulu kumashishini okuwelda, ukusika kunye namanye amashishini.

Okwangoku, ezisetyenziswa kakhuluiigesi ezixutyiweyoinokwahlulwa ibe ziigesi ezixutyiweyo ezimbini kunye neegesi ezixutyiweyo ezintathu ngokohlobo lweegesi ezixutyiweyo.

Umlinganiselo wecandelo ngalinye kuhlobo ngalunye lweigesi exutyiweyozingahluka kuluhlu olukhulu, oluxhomekeke kakhulu kwizinto ezininzi ezifana nenkqubo yokuwelda, izinto zokuwelda, imodeli yentambo yokuwelda, njl. Ngokubanzi, okukhona iimfuno zomgangatho wokuwelda ziphezulu, kokukhona iimfuno zobumsulwa begesi enye esetyenziselwa ukulungiselelaigesi exutyiweyo.

Izinto ezimbini ezixutyiweyo zegesi

I-Argon + iOksijini

Ukongeza isixa esifanelekileyoioksijiniUkuyila i-argon kunokuphucula ngokufanelekileyo uzinzo lwe-arc kwaye kucoce amaconsi anyibilikisiweyo. Iimpawu ezixhasa ukutsha kweoksijini zinokunyusa ubushushu besinyithi kwidama elinyibilikisiweyo, zikhuthaze ukuhamba kwesinyithi, zinciphise iziphene zokuyila, zenze i-weld ibe lula, kwaye zikhawulezise isantya sokuyila kwaye ziphucule ukusebenza kakuhle kokuyila. Ukongeza, igesi yokukhusela ioksijini + i-argon inoluhlu olubanzi lokusetyenziswa kwaye ingasetyenziselwa ukuyila intsimbi yekhabhoni, intsimbi ye-alloy ephantsi kunye nentsimbi engatyiwayo enobukhulu obahlukeneyo.

I-Argon + iCarbon Dioxide

I-carbon dioxide inokuphucula amandla okuwelda kunye nokumelana nokugqwala, kodwa igesi yokukhusela i-carbon dioxide ecocekileyo ichitha kakhulu, nto leyo engayi kunceda abasebenzi. Ukuyixuba ne-argon ezinzileyo kunokunciphisa ngempumelelo izinga lokuchaphaza kwesinyithi. Ukusebenzisa iipesenti ezahlukeneyo zegesi yokukhusela i-oxygen + argon kuneengenelo ezicacileyo zokuchaphaza isinyithi se-carbon kunye nentsimbi engagqwaliyo.

I-Argon+iHydrogen

I-hydrogenyigesi exhasa ukutsha enciphisayo engakwaziyo nje kuphela ukwandisa ubushushu be-arc, ikhawulezise isantya sokuwelda, kwaye ithintele ukunqunyulwa okungaphantsi, kodwa ikwanciphisa amathuba okuba iimbobo ze-CO zibe yinxalenye kwaye ithintele iziphene zokuwelda. Inemiphumo emihle kakhulu yokuwelda kwii-alloys ezisekelwe kwi-nickel, ii-alloys ze-nickel-copper, kunye nentsimbi engatyiwayo.

Izinto Ezintathu Ezixutyiweyo Ngegesi

I-Argon+i-oksijini+i-carbon dioxide

Lo ngumxube wegesi oneziqendu ezintathu ezisetyenziswa kakhulu, oneziphumo ezidibeneyo zokukhusela ezi ziqendu zimbini zingasentla.IoksijiniInceda ekutshiseni, ingacoca amathontsi anyibilikisiweyo, iphucule umgangatho we-weld kunye nesantya se-welding; i-carbon dioxide inokuphucula amandla e-weld kunye nokumelana nokugqwala, kwaye i-argon inokunciphisa ukuchitheka. Ukuze kufakwe i-carbon steel, i-low alloy steel kunye ne-stainless steel, lo mxube wegesi we-ternary unefuthe elingcono lokukhusela.

I-Argon+iHelium+iCarbon Dioxide

I-Heliuminokunyusa amandla obushushu, iphucule ukunyibilika kwedama elinyibilikisiweyo kwaye ikhuthaze ukwakheka kwe-weld. Nangona kunjalo, ngenxa yokuba i-helium yigesi engasebenziyo, ayinampembelelo ekutshisweni kwe-oxidation kunye ne-alloy metal ye-weld. Ke ngoko, ingasetyenziselwa i-carbon steel kunye ne-low alloy steel pulse jet arc welding, i-high-strength steel, ngakumbi i-all-position short-circuit welding, kunye ne-stainless steel all-position short-circuit welding ngokulungelelanisa imilinganiselo eyahlukeneyo.