Ukuwelda kwe-arc engaphantsi komhlaba (SAW), njengoko igama lisitsho, kwenziwa phantsi komaleko okhuselayo okanye ingubo yokufutha. Njengoko i-arc ihlala igqunywe bubukhulu bokufutha, isusa nayiphi na imitha evela kwii-arches eziveziweyo kunye nemfuneko yezikrini zokuwelda. Ngeendlela ezimbini zenkqubo, ezenzekelayo kunye ne-semi-automatic, yenye yeenkqubo zokuwelda ezisetyenziswa kakhulu kushishino lwenkqubo. I-Wenzhou Tianyu Electronic Co., Ltd., enye yabathengisi beengcingo zokuwelda ze-arc ezingaphantsi komhlaba abadumileyo eTshayina, ibonisa umgaqo kunye nokusetyenziswa kokuwelda kwe-sub-arc. Masibone ukuba ziyintoni na:
Inkqubo:
Ngokufana nokuwelda kwe-MIG, i-SAW ikwasebenzisa indlela yokwenza i-arc phakathi kwe-weld joint kunye ne-continuous bare electrode wire. Umaleko omncinci we-flux kunye ne-slag zisetyenziselwa ukuvelisa imixube yegesi ekhuselayo kunye nokongeza ii-alloys ezifunekayo kwi-weld pool, ngokwahlukeneyo. Njengoko i-weld iqhubeka, i-electrode wire ikhutshwa ngesantya esifanayo sokusebenzisa kwaye i-flux engaphezulu itsalwa ngenkqubo ye-vacuum ukuze isetyenziswe kwakhona. Ngaphandle kokukhusela imitha, ii-flux layers nazo ziluncedo kakhulu ekuphepheni ukulahleka kobushushu. Ukusebenza kakuhle kobushushu kwale nkqubo, malunga ne-60%, kubangelwa zezi flux layers. Kwakhona inkqubo ye-SAW ayinayo i-spattering kwaye ayifuni naluphi na inkqubo yokukhupha i-fume.
Inkqubo yokusebenza:
Njengayo nayiphi na enye inkqubo yokuwelda, umgangatho weendawo zokuwelda malunga nobunzulu bokungena, imo kunye nokwakheka kweekhemikhali zentsimbi yokuwelda ebekwe bucala zihlala zilawulwa ziiparameter zokuwelda ezifana nombane, i-arc voltage, isantya sokutya kwentambo yokuwelda, kunye nesantya sokuhamba kwe-weld. Enye yeziphene (ewe, iindlela ziyafumaneka zokuzilungisa) kukuba umwelda akanakukwazi ukujonga ichibi lokuwelda kwaye ke ngoko umgangatho womthombo uxhomekeke ngokupheleleyo kwiiparameter zokusebenza.
Iiparamitha zenkqubo:
Njengoko bekutshiwo ngaphambili, kungenxa yemilinganiselo yenkqubo kuphela, kwaye umthungi uyayilungisa i-weld joint. Umzekelo, kwinkqubo ezenzekelayo, ubungakanani bentambo kunye ne-flux esetyenzisiweyo efanelekileyo kuhlobo oluqhelekileyo, ubukhulu bezinto, kunye nobukhulu bomsebenzi zidlala indima ebalulekileyo ekugqibeni izinga lokufakwa kunye neemilo ze-bead.
Ucingo:
Ngokuxhomekeke kwimfuneko yesantya sokufakwa kwenkunkuma kunye nesantya sokuhamba, iingcingo ezilandelayo zingakhethwa
·Iintambo ezimbini
·Iingcingo ezininzi
·Ucingo lweTubular
·Ukongeza umgubo wesinyithi
·Intambo enye enokongeza okushushu
·Intambo enye enokongeza okubandayo
I-Flux:
Umxube we-granular wee-oxides zezinto ezahlukeneyo ezifana ne-manganese, i-titanium, i-calcium, i-magnesium, i-silicon, i-aluminium, kunye ne-calcium fluoride usetyenziswa kakhulu njenge-flux kwi-SAW. Ngokwesiqhelo, indibaniselwano ikhethwa ngendlela yokuba ibonelele ngeempawu zoomatshini ezicetywayo xa idityaniswa nentambo yokuwelda. Kufuneka kuqatshelwe ukuba ukwakheka kwezi fluxes kudlala indima ebalulekileyo kwi-operating arc voltage kunye ne-current parameters. Ngokusekelwe kwimfuneko yokuwelda, ngokuyintloko iintlobo ezimbini ze-fluxes, ezibotshelelweyo kunye nezihlanganisiweyo ziyasetyenziswa kule nkqubo.
Ukusetyenziswa:
Yonke indlela yokuwelda ineendlela zayo zokusebenza, ezihlala zihambelana ngenxa yobukhulu bemfuno engabizi kakhulu kunye nomgangatho.
Nangona i-SAW ingasetyenziswa kakuhle kakhulu kwimijoyinti yempundu (ende kunye nejikelezileyo) kunye nemijoyinti yefillet, ayinazo izithintelo zincinci. Ngenxa yokutyibilika kwedama lokuwelda, i-slag ekwimeko yokunyibilika kunye nomaleko okhululekileyo wokuhambahamba, imijoyinti yempundu isoloko isenziwa kwindawo ethe tyaba, kwaye kwelinye icala, imijoyinti yefillet yenziwa kuzo zonke iindawo - ezithe tyaba, ezithe tye, nezithe nkqo.
Kufuneka kuqatshelwe ukuba logama nje iinkqubo ezifanelekileyo kunye nokukhethwa kweempawu zokulungiselela amalunga zenziwa, i-SAW inokwenziwa ngempumelelo kwizinto ezikuyo nayiphi na ubukhulu.
Ingasetyenziswa kakuhle kwiintsimbi zekhabhoni, iintsimbi ezingatyiwayo kunye neentsimbi eziphantsi kwe-alloy kunye nee-alloys ezimbalwa kunye nezinto ezingezizo i-ferrous, ukuba nje ikhowudi ye-ASME icebise ukuba kusetyenziswa indibaniselwano ye-wire kunye ne-flux.
I-SAW ifumana indawo esisigxina kwimizi-mveliso yoomatshini abakhulu kunye nemizi-mveliso yokwakha iinqanawa kwiindawo ezinkulu zokuwelda, iipayipi ezinkulu, kunye neenqanawa zokucubungula.
Ngenxa yokusetyenziswa kakhulu kwentambo ye-electrode kunye namathuba okuzenzekelayo afikelelekayo, i-SAW isoloko yenye yeenkqubo zokuwelda ezifunwa kakhulu kushishino lokuvelisa.
Ixesha lokuthumela: Disemba-23-2022