Ua lilo ka paipu kila arc submerged i ka paipu kila o ka aila nui a me ke kinoea kaʻa papahana ma ka home a ma waho ma muli o kona mānoanoa pā nui, maikaʻi mea waiwai a me ka paʻa kaʻenehana hana. I loko o ka nui-diameter submerged arc kila paipu welded ami, ka weld seam a me ka wela-pili wahi nā wahi i prone i nā hemahema, oiai welding undercuts, pores, slag inclusions, inadequate fusion, incomplete penetration, weld bumps, wela-ma. , a me ka welding māwae ʻO ia ke ʻano nui o ke kīnā ʻole, a ʻo ia ke kumu o nā pōʻino o ka paipu kila arc i hoʻopaʻa ʻia. Penei na hana hoomalu.

1. Mana ma mua o ka wiliwili ʻana:

1) Pono e nānā mua ʻia nā mea maka, a ma hope o ka hala ʻana o ka nānā ʻana hiki iā lākou ke komo ma ke kahua kūkulu hale, a hoʻohana paʻa i ke kila kūpono ʻole.
2) ʻO ka lua ka hoʻokele ʻana i nā mea welding. E nānā inā he mau huahana kūpono nā mea wili, inā paha i hoʻokō ʻia ka ʻōnaehana mālama a me ka kuke ʻana, inā he maʻemaʻe a ʻeleʻele ka ʻili o nā mea hoʻoheheʻe i hāʻawi ʻia, inā paʻa ka uhi ʻana o ke koʻokoʻo a me ka maʻi.
3) ʻO ke kolu ka mālama maʻemaʻe o ka wahi wili. E nānā i ka maʻemaʻe o ka wahi wili, a ʻaʻohe lepo e like me ka wai, ka aila, ka ʻōpala a me ke kiʻi oxide, kahi mea nui i ka pale ʻana i nā hemahema o waho i ka weld.
4) No ke koho ʻana i kahi ʻano kuʻi ʻana kūpono, pono e hoʻokō ʻia ke kumu o ka hoʻāʻo mua ʻana a me ka hoʻopili ʻana ma hope.

2. Mana i ka wā wili:

1) E nānā inā pololei nā kikoʻī o ka uea welding a me ka flux e like me nā lula kaʻina hana e pale ai i ka hoʻohana hewa ʻana o ka uea welding a me ka flux a kumu i nā pōʻino kuʻi.
2) E nānā i ke kaiapuni welding. I ka maikaʻi ʻole o ke kaiapuni welding (ʻoi aku ka haʻahaʻa o ka mahana ma mua o 0 ℃, ʻoi aku ka haʻahaʻa haʻahaʻa ma mua o 90%), pono e lawe ʻia nā ana kūpono ma mua o ke kuʻi ʻana.
3) Ma mua o ka hoʻopili mua ʻana, e nānā i nā ana o ke awāwa, me nā āpau, nā ʻaoʻao blunt, nā kihi a me nā misalignments, inā paha lākou e hoʻokō i nā koi kaʻina.
4) Inā pololei ke kuʻi ʻana o kēia manawa, ka uila wiliwili, ka wikiwiki wiliwili a me nā ʻāpana kaʻina hana ʻē aʻe i koho ʻia i ke kaʻina hana kuʻi ʻana i ka arc submerged.
5) E nānā i nā limahana wili e hoʻohana piha i ka lōʻihi o ka paila arc pilot ma ka hope o ka paipu kila i ka wā o ka hoʻoheheʻe ʻana i ka arc submerged, a hoʻoikaika i ka hoʻohana pono ʻana o ka pā pailaka arc i ka wā o ka wili kūloko a me waho, e kōkua ana i hoʻomaikaʻi i ka hoʻoheheʻe ʻana o ka paipu.
6) E nānā inā hoʻomaʻemaʻe mua nā limahana wili i ka slag i ka wā o ka hoʻoponopono ʻana, inā ua hana ʻia nā hui, inā he aila, ʻōpala, pala, wai, pena a me nā lepo ʻē aʻe ma ke awāwa.