Nyob rau hauv lub welded yeeb nkab los ntawm sab saum toj ntawm lub arc, los ntawm sab saum toj mus rau hauv qab tag nrho-txoj hauj lwm vuam txheej txheem, txoj kev vuam ceev, weld tsos, zoo vuam zoo, koj muaj peev xwm txuag vuam cov ntaub ntawv, txo zog siv, uas yog ib tug SMAW muaj peev xwm. tsis tau muab piv thiab tam sim no ntau dav siv nyob rau hauv loj-caliber ntev-ntev pipeline welding nyob rau hauv tag nrho cov txoj hauj lwm ntawm lub hwj chim nyob rau hauv kev tsim kho ntawm tsawg-welded loj txoj kab uas hla nyias-walled raj muaj ib co promotional nqi.

Nyob rau hauv lub vuam feem ntau xaiv qhov tsim nyog vuam tam sim no, lub kaum sab xis electrode thiab vuam ceev, ncaj nraim los ntawm rub los yog suppress arcing viav vias me ntsis kom tiav vuam. Ordinary electrode prone drip drip molten hlau thiab slag nyob rau hauv nqe lus nug, thiab kev siv cov kav dej siab rau vuam electrodes, vuam specifications nruj me ntsis, koj tuaj yeem daws cov teeb meem no. Cellulose hom electrode vuam slag tsawg, arc quab yuam, nruj txaus los tiv thaiv lub molten slag thiab drip down thiab nkag arc loj, tshwj xeeb tshaj yog rau tuab-walled ntim thiab welded steel yeeb nkab ntaus hauv qab, koj yuav tshem tawm lub hauv paus shovel ua hauj lwm, yog li txhim kho kev ua hauj lwm. efficiency, txhim kho kev ua hauj lwm, tab sis vim hais tias ntawm nws cov high hydrogen cov ntsiab lus ntawm lub vuam, yog li rau domestic high-pressure yeeb nkab welding tam sim no feem ntau siv cellulose electrode backing ntxiv rau tsawg hydrogen electrodes thiab muab tub lim cap nto welding.

Txoj cai txheej ntawm cov raj thiab tack welding yog nyob rau ntawm kev ua kom zoo ntawm cov vuam, lub nraub qaum ntawm cov vuam zoo yog qhov tseem ceeb. Tack welding seam yog ib feem ntawm kev ua haujlwm, tsis yog tsuas yog yuav tsum tau ua rau sab vuam, tab sis kuj los xyuas kom meej qhov vuam zoo. Tack welding ntev 20mm, tuab txog 3 hli, maj mam slopes ntawm ob sab ntawm lub vuam yuav tsum tau hauv av rau hauv cov duab, txhawm rau pab txhawb kev sib koom ua ke.
Tom ntej no mus rau vuam electrode yog ib qho tseem ceeb heev uas yuav tsum tau siv lub kaum sab xis. Backing weld, filling thiab capping rod lub kaum sab xis yog qhov zoo ib yam, tab sis qhov ntev arc thiab thauj ntawm ib daim ntawv sib txawv. Tom ntej no mus rau lub vuam, lub vuam yog tswj los ntawm qhov ntev thiab dav ntawm cov ntaub ntawv tseem ceeb ntawm kev thauj mus los ntawm lub arc, arc thiab arc ze ze rau qhov tsis ncaj ncees lawm qhov chaw yuav tsum qhib.