Kuwotcherera kwa arc (SAW) ndi njira wamba kuwotcherera arc.Patent yoyamba pamayendedwe a submerged-arc welding (SAW) idatulutsidwa mu 1935 ndikuyika arc yamagetsi pansi pa bedi la granulated flux.Kupangidwa koyambirira ndi kovomerezeka ndi Jones, Kennedy ndi Rothermund, njirayi imafuna kudyetsedwa kosalekeza kolimba kapena tubular (metal cored) electrode.The wosungunula weld ndi arc zone amatetezedwa ku kuipitsidwa mumlengalenga mwa "kumizidwa" pansi pa bulangete la granular fusible flux wopangidwa ndi laimu, silika, manganese oxide, calcium fluoride, ndi mankhwala ena.Mukasungunuka, kusinthasintha kumakhala kochititsa chidwi, ndipo kumapereka njira yamakono pakati pa electrode ndi ntchito.Kuchulukaku kumakwiriratu chitsulo chosungunula motero kuletsa sipatter ndi ntchentche komanso kupondereza cheza champhamvu cha ultraviolet ndi utsi womwe ndi gawo la njira yotchinga yachitsulo yotchinga (SMAW).

SAW nthawi zambiri imagwira ntchito mongodziwikiratu kapena mwamakina, komabe, mfuti za semi-automatic (zamanja) za SAW zokhala ndi zopatsa mphamvu kapena mphamvu yokoka zoperekera chakudya zilipo.Njirayi nthawi zambiri imakhala yowotcherera yafulati kapena yopingasa-fillet (ngakhale ma welds opingasa apangidwa ndi dongosolo lapadera lothandizira kusuntha).Miyezo yokhazikika yomwe ikuyandikira 45 kg / h (100 lb / h) yanenedwa-Izi zikufanizira ndi ~ 5 kg/h (10 lb/h) (max) pa kuwotcherera zitsulo zotetezedwa.Ngakhale mafunde oyambira 300 mpaka 2000 A amagwiritsidwa ntchito nthawi zambiri, mafunde ofikira 5000 A amagwiritsidwanso ntchito (ma arc angapo).

Mawaya amodzi kapena angapo (2 mpaka 5) a ma elekitirodi amasiyanasiyana panjirayi.Zovala za SAW zimagwiritsa ntchito ma elekitirodi amtundu wathyathyathya (mwachitsanzo 60 mm m'lifupi x 0.5 mm wokhuthala).Mphamvu za DC kapena AC zitha kugwiritsidwa ntchito, ndipo kuphatikiza kwa DC ndi AC ndizofala pamakina angapo amagetsi.Mphamvu zamagetsi zowotcherera nthawi zonse zimagwiritsidwa ntchito kwambiri;komabe, makina okhazikika omwe alipo ophatikizana ndi mawaya ozindikira ma voltage akupezeka.