Submerged arc vuam (SAW) yog ib qho txheej txheem arc vuam. Thawj patent ntawm submerged-arc welding txheej txheem (SAW) tau raug coj tawm hauv xyoo 1935 thiab npog cov hluav taws xob arc hauv qab lub txaj ntawm granulated flux. Keeb kwm tsim thiab patented los ntawm Jones, Kennedy thiab Rothermund, cov txheej txheem yuav tsum tau ib tug tsis tu ncua noj consumable khoom los yog tubular (hlau cored) electrode.[1] Lub molten weld thiab arc cheeb tsam yog tiv thaiv los ntawm atmospheric paug los ntawm "submerged" nyob rau hauv ib daim pam ntawm granular fusible flux uas muaj txiv qaub, silica, manganese oxide, calcium fluoride, thiab lwm yam tebchaw. Thaum molten, cov flux ua conductive, thiab muab txoj hauv kev tam sim no ntawm electrode thiab kev ua haujlwm. Cov txheej tuab ntawm flux no npog tag nrho cov hlau molten yog li tiv thaiv spatter thiab sparks nrog rau suppressing lub khaus ultraviolet hluav taws xob thiab pa taws uas yog ib feem ntawm cov shielded hlau arc vuam (SMAW) txheej txheem.
SAW feem ntau ua haujlwm hauv hom tsis siv neeg lossis tshuab tshuab, txawm li cas los xij, semi-automatic (hand-held) SAW phom nrog lub zog los yog lub ntiajteb txawj nqus flux pub khoom xa tuaj. Cov txheej txheem feem ntau txwv rau txoj haujlwm tiaj tus lossis kab rov tav-fillet vuam txoj haujlwm (txawm hais tias kab rov tav zawj txoj haujlwm welds tau ua tiav nrog kev npaj tshwj xeeb los txhawb cov flux). Deposition nqi nce mus txog 45 kg / h (100 lb / h) tau tshaj tawm - qhov no piv rau ~ 5 kg / h (10 lb / h) (max) rau shielded hlau arc vuam. Txawm hais tias tam sim no ntawm 300 mus rau 2000 A feem ntau siv, [2] cov tam sim no txog li 5000 A kuj tau siv (ntau yam arcs).
Ib leeg lossis ntau yam (2 txog 5) electrode hlau variations ntawm cov txheej txheem muaj nyob. SAW strip-cladding siv lub tiaj tus electrode (xws li 60 hli dav x 0.5 hli tuab). DC lossis AC fais fab tuaj yeem siv tau, thiab kev sib txuas ntawm DC thiab AC yog ib qho ntawm ntau lub tshuab electrode. Cov khoom siv hluav taws xob tsis tu ncua vuam siv hluav taws xob feem ntau yog siv; Txawm li cas los xij, cov tshuab tam sim no tsis tu ncua ua ke nrog qhov ntsuas hluav taws xob ntsuas hluav taws xob-feeder muaj.
