Theelectrodecoatinghasthefollowingfuncti***:(1)ensurethearcburningstablyandmaketheweldingprocessnormal;(2)tousethegasesproducedbythecoatingreactiontoprotectthearcandthemoltenpoolandtopreventharmfulgasesintheair(suchasnitrogen,oxygen,etc.)fromintrudingintothepool,suchascracksandporesintheweldingmaterial,Theweldingdoesnotachievethedesiredeffect.(3)themoltenslagisformedafterthecoatingmelts,coveringtheweldmetalonthesurfaceoftheweldtoprotecttheweldmetal,sothattheweldmetalcanbecooledslowly,whichwillbehelpfultothegasescape,preventtheformationofthepores,andimprovethemicrostructureandpropertiesoftheweld.)