Mgbado ọkụ n'ime mmiri (SAW) bụ usoro ịgbado ọkụ nkịtị.E wepụrụ patent nke mbụ na usoro ịgbado ọkụ n'okpuru mmiri (SAW) na 1935 wee kpuchie arc eletrik n'okpuru ihe ndina nke granulated flux.Site na Jones, Kennedy na Rothermund mebere ya ma nweta ikike ya, usoro a chọrọ elektrọd siri ike ma ọ bụ tubular (metal cored) na-eri nri mgbe niile.A na-echebe weld a wụrụ awụ na mpaghara arc site na mmetọ ikuku site na ịbụ “mmiri n'ime” n'okpuru blanketị nke granular fusible flux nke gụnyere lime, silica, manganese oxide, calcium fluoride, na ogige ndị ọzọ.Mgbe agbazere, flux na-aghọ ihe na-eduzi, ma na-enye ụzọ dị ugbu a n'etiti electrode na ọrụ ahụ.Igwe mmiri a siri ike na-ekpuchi ọla a wụrụ awụ kpamkpam si otú a na-egbochi spatter na nkuku yana igbochi ultraviolet radieshon na uzuzu bụ akụkụ nke usoro ịgbado ọkụ metal arc (SMAW).

A na-arụkarị SAW n'ụdị akpaaka ma ọ bụ mechanized, agbanyeghị, egbe SAW nwere obere akpaaka (jiri aka) nwere nnyefe nri nrụgide ma ọ bụ ike ndọda dị.A na-ejikarị usoro a na-ejedebe na ọnọdụ ịgbado ọkụ dị larịị ma ọ bụ kehoraizin-fillet (ọ bụ ezie na e jirila ndokwa pụrụ iche mee welds nke kwụ ọtọ).Akọpụtala ọnụego nkwụnye ego na-eru nso 45 kg / h (100 lb / h).-nke a na-atụnyere ~ 5 kg / h (10 lb / h) (max) maka ịgbado ọkụ igwe mkpuchi.Ọ bụ ezie na a na-ejikarị ebili mmiri sitere na 300 ruo 2000 A, ejiriwokwa ihe ruru 5000 A (ọtụtụ arcs).

Otu ma ọ bụ otutu (2 ruo 5) ọdịiche waya electrode nke usoro dị.Ihe mkpuchi SAW na-eji eriri eletrọd dị larịị (dịka obosara 60mm x 0,5 mm).Enwere ike iji ike DC ma ọ bụ AC, yana njikọta nke DC na AC na-ahụkarị na sistemu electrode ọtụtụ.A na-ejikarị ọkụ eletrik na-agbado ọkụ mgbe niile;Otú ọ dị, usoro dị ugbu a na-agbanwe agbanwe yana voltaji na-achọpụta waya-feder dị.