AWS E8015-B3L Nā kila haʻahaʻa haʻahaʻa Metala pauda uwea wiliwili hoʻohui

ʻO AWS E8015-B3L ʻano lima kuʻi lima electrode no ka wela kūpaʻa kila he haʻahaʻa sodium hydrogen type lima kuʻi lima electrode, ka mea i loaʻa i ka maikaʻi o ka pale ʻana ma lalo o 550 ℃ kiʻekiʻe kiʻekiʻe a me ke kiʻekiʻe kiʻekiʻe o nā kūlana hana, a ʻo ka electrode he paʻa arc, emi ʻole ka splashing, maikaʻi. ka hana ʻana, maʻalahi ka de-slagging a me ka hana X-Ray maikaʻi loa. I ka wā e wili ai, pono e hoʻopili ʻia ka pā mānoanoa he multi-layer welding, ʻaʻole i haʻahaʻa ka mahana ma waena o nā papa ma mua o ka preheating preheating, pono e hoʻopau ʻia ka welding i ka manawa, ʻoi aku ka maikaʻi o ka hoʻopau ʻole. Inā makemake ʻia ka hoʻomaha interlayer, pono e lawe ʻia ka insulation thermal a me ka hoʻoluʻu lohi, a pono e lawe ʻia nā ʻano hoʻomehana like ma mua o ka welded hou. I ka wā o ke kaʻina hana hoʻoheheʻe, pono e nānā i ka hoʻopiha ʻana i ka lua arc, ka wili ʻana i ka hui, a me ka wehe ʻana i ka māwae arc pit (hot crack). ʻO ka nui o ke au, ʻoi aku ka hohonu o ka lua arc. No laila, pono e koho ʻia nā ʻāpana welding a me ka ikehu laina kūpono e like me nā ʻōlelo aʻoaʻo kaʻina hana.