Ho chesella ka tlas'a metsi (SAW) ke mokhoa o tloaelehileng oa ho tjheseletsa arc.Patent ea pele ea ts'ebetso ea submerged-arc welding (SAW) e ile ea ntšoa ka 1935 'me ea koahela arc ea motlakase ka tlas'a bethe ea granulated flux.E qaliloe pele ebile e na le tokelo ea molao ke Jones, Kennedy le Rothermund, ts'ebetso ena e hloka elektrode e matla e ka jeoang e sa khaotseng kapa ea tubular (metal cored).The molt weld le arc zone li sirelelitsoe tšilafalong ea sepakapaka ka ho "qoelisoa" ka tlas'a kobo ea granular fusible flux e nang le lime, silika, manganese oxide, calcium fluoride, le metsoako e meng.Ha e qhibiliha, phallo e fetoha conductive, 'me e fana ka tsela ea hona joale pakeng tsa electrode le mosebetsi.Lera lena le teteaneng la ho phalla le koahela ka ho feletseng tšepe e qhibilihisitsoeng ka tsela eo ho thibela spatter le litlhase hammoho le ho thibela mahlaseli a kotsi a ultraviolet le mosi oo e leng karolo ea ts'ebetso ea shielded metal arc welding (SMAW).

SAW hangata e sebetsoa ka mokhoa oa othomathike kapa oa mochini, leha ho le joalo, lithunya tsa SAW tse nang le khatello ea maikutlo kapa matla a khoheli lia fumaneha.Ts'ebetso hangata e lekanyelitsoe ho maemo a tjheseletsa a bataletseng kapa a rapameng (le hoja li-welds tsa boemo ba groove li entsoe ka tlhophiso e khethehileng ea ho ts'ehetsa phallo).Litefiso tsa deposition tse atamelang 45 kg / h (100 lb / h) li tlalehiloe-sena se bapisoa le ~ 5 kg/h (10 lb/h) (max) (max) bakeng sa shielded tšepe arc welding.Leha maqhubu a ho tloha ho 300 ho isa ho 2000 A a sebelisoa hangata, maqhubu a fihlang ho 5000 A le ona a sebelisitsoe (li-arcs tse ngata).

Ho na le mefuta e le 'ngoe kapa e mengata (2 ho ea ho 5) ea terata ea electrode ea mokhoa ona.SAW strip-cladding e sebelisa eleketrode e sephara (mohlala, bophara ba limilimithara tse 60 x 0.5 mm botenya).Matla a DC kapa a AC a ka sebelisoa, 'me motsoako oa DC le AC o tloaelehile mekhoeng e mengata ea li-electrode.Lisebelisoa tsa motlakase oa ho cheselletsa motlakase li sebelisoa hangata;Leha ho le joalo, litsamaiso tsa hona joale tse sa khaotseng hammoho le motlakase oa ho lemoha motlakase lia fumaneha.