TIG
1.Isicelo :
TIG ukuwelda(i-tungsten argon arc welding) yindlela ye-welding apho i-Ar ecocekileyo isetyenziswe njengegesi yokukhusela kunye ne-tungsten electrode isetyenziswa njenge-electrode.I-TIG ye-welding wire inikezelwa kwimicu ethe tye yobude obuthile (ngokuqhelekileyo i-lm).Irhasi engasebenziyo ekhusela i-arc welding usebenzisa i-tungsten esulungekileyo okanye i-tungsten esebenzayo (i-tungsten ethobileyo, i-cerium tungsten, i-zirconium tungsten, i-lanthanum tungsten) njenge-electrode enganyibilikiyo, usebenzisa i-arc phakathi kwe-electrode ye-tungsten kunye nesixhobo sokusebenza ukunyibilikisa isinyithi ukwenza i-weld.I-electrode ye-tungsten ayinyibiliki ngexesha lenkqubo ye-welding kwaye isebenza kuphela njenge-electrode.Ngelo xesha, i-argon okanye i-helium yondliwa kwi-nozzle ye-torch ukukhusela.Iintsimbi ezongezelelweyo zingongezwa njengoko zifunwa.Kumazwe ngamazwe eyaziwa njengeTIG ukuwelda.
2. Inzuzo:
Inzuzo ephambili yendlela ye-TIG ye-welding kukuba inokudibanisa uluhlu olubanzi lwezinto.Kubandakanya i-workpieces ezinobunzima be-0.6mm nangaphezulu, izixhobo ziquka intsimbi ye-alloy, i-aluminium, i-magnesium, i-copper kunye ne-alloys yayo, i-iron grey cast, i-bronzes eyahlukeneyo, i-nickel, isilivere, i-Titanium kunye nelothe.Intsimi ephambili yesicelo kukuwelda kwee-workpieces ezibhityileyo kunye nobukhulu obuphakathi njengengcambu yokudlula kumacandelo anzima.
3. Ingqalelo:
A. Ukukhusela iimfuno zokuhamba kwegesi: xa i-welding current iphakathi kwe-100-200A, yi-7-12L / min;xa i-welding yangoku iphakathi kwe-200-300A, yi-12-15L / min.
B. Ubude obuphumayo be-electrode ye-tungsten kufuneka bube mfutshane kangangoko xa kuthelekiswa nombhobho, kwaye ubude be-arc kufuneka bulawuleke ngokubanzi kwi-1-4mm (2-4mm yokuwelda intsimbi yekhabhoni; 1-3mm yokuwelda intsimbi ephantsi kwealloyi. kunye nentsimbi engatyiwayo).
C. Xa isantya somoya singaphezulu kwe-1.0m/s, amanyathelo angangeni moya kufuneka athathwe;nikela ingqalelo kwi-ventilation ukuphepha ukwenzakala kumqhubi.
D. Susa ngokuthe ngqo ukungcola kweoli, i-rust kunye nokufuma kwindawo ye-welding ngexesha le-welding.
E. Kucetyiswa ukuba kusetyenziswe umbane weDC oneempawu zangaphandle ezimqengqelezi, kunye nepali ye-tungsten intle kakhulu.
F. Xa udibanisa intsimbi ephantsi ye-alloy ngaphezu kwe-1.25% Cr, icala elingasemva kufuneka likhuselwe.
MIG
1.Isicelo:
Ukuwelda kwe-MIGkunyibilika kwipali engasebenziyo irhasi ekhuselwe ukuwelda.Isebenzisa i-Ar kunye nezinye iigesi ze-inert njengeyona gesi yokukhusela, kubandakanywa i-Ar ecocekileyo okanye i-Ar exutywe kunye nexabiso elincinci legesi esebenzayo (njenge-O2 engaphantsi kwe-2% okanye i-CO2 engaphantsi kwe-5%) yokunyibilika.Indlela ye-welding ye-arc welding.I-MIG wire inikezelwa ngeekhoyili okanye iikhoyili kwiileyile.Le ndlela yokudibanisa isebenzisa i-arc evuthayo phakathi kocingo lwe-welding oluqhubekayo kunye ne-workpiece njengomthombo wobushushu, kunye negesi ekhutshwe kwi-nozzle yetotshi isetyenziselwa ukukhusela i-arc ye-welding.
2. I-Advanteji:
Ilungele ukuwelda kwizikhundla ezahlukeneyo, kwaye inesantya esikhawulezayo se-welding kunye nesantya esiphezulu sokubekwa.I-MIG-shielded arc welding iyasebenza kwi-welding yezona zintsimbi ezinkulu, kuquka i-carbon steel kunye ne-alloy steel.I-MIG i-arc welding ifanelekile kwinsimbi engenasici, i-aluminium, i-magnesium, ithusi, i-titanium, i-picks kunye ne-nickel alloys.I-arc spot welding nayo inokwenziwa kusetyenziswa le ndlela yokuwelda.
3.Ingqalelo:
A. Izinga lokuhamba kwegesi elikhuselayo likhetha i-20-25L / min.
B. Ubude be-arc bulawulwa ngokubanzi malunga ne-4-6mm.
C. Impembelelo yomoya ayithandeki ngokukodwa kwi-welding.Xa isantya somoya singaphezulu kwe-0.5m/s, amanyathelo angangeni moya kufuneka athathwe;nikela ingqalelo kwi-ventilation ukuphepha ukwenzakala kumqhubi.
D.Ukusetyenziswa kwe-pulsed arc current kunokufumana i-arc ezinzileyo yokutshiza, ngokukodwa ilungele i-welding yensimbi engenasici, i-plate encinci, i-vertical welding kunye ne-surfacing welding.
E. Nceda usebenzise i-Ar + 2% ye-O2 indibaniselwano yegesi ukuwelda i-ultra-low carbon stainless steel, ungasebenzisi i-Ar kunye ne-CO2 yentsimbi edibeneyo yokuwelda.
F. Susa ngokuthe ngqo ukungcola kweoli, i-rust kunye nokufuma kwindawo ye-welding ngexesha le-welding.
Ixesha lokuposa: Apr-25-2023