Ọ bụ ihe a na-ahụkarị maka ọkpọkọ carbon ígwè welded nwere ikuku ikuku na weld, karịsịa nnukwu dayameta carbon enweghị nkebi ígwè ọkpọkọ weld pores ọ bụghị nanị na-emetụta tightness nke pipeline weld ma na-eme ka pipeline na-agbapụta, ma na-aghọkwa ebe ntinye nke corrosion, nke na-eme ka ọ bụrụ ihe ntinye nke corrosion. na-ebelata ike na ike nke weld nke ọma..Ihe ndị na-akpata porosity na weld bụ: mmiri, unyi, oxide scale na ígwè filings na flux, welding components na cover ọkpụrụkpụ, n'elu àgwà nke ígwè efere na ọgwụgwọ nke efere nchara n'akụkụ efere, ịgbado ọkụ usoro na ígwè ọkpọkọ. akpụ usoro, wdg Flux mejupụtara.Mgbe ịgbado ọkụ nwere ego kwesịrị ekwesị nke CaF2 na SiO2, ọ ga-emeghachi omume ma nweta nnukwu H2, ma mepụta HF na nkwụsi ike dị elu na nke na-adịghị edozi na mmiri mmiri, nke nwere ike igbochi nhazi nke pores hydrogen.

Afụ na-abụkarị n'etiti bead weld.Isi ihe kpatara ya bụ na hydrogen ka na-ezo n'ime igwe weld n'ụdị afụ.Ya mere, ihe iji kpochapụ ntụpọ a bụ ibu ụzọ wepụ nchara, mmanụ, mmiri na mmiri si na waya ịgbado ọkụ na weld.na ihe ndị ọzọ, nke na-esote flux ga-abụ nke ọma akpọnwụwo iji wepụ mmiri mmiri.Tụkwasị na nke ahụ, ọ dịkwa irè iji mee ka ihe dị ugbu a dịkwuo elu, belata ọsọ ịgbado ọkụ, ma na-ebelata ọnụ ọgụgụ siri ike nke ígwè a wụrụ awụ.

Okpokoro mkpokọta nke flux bụ n'ozuzu 25-45mm.A na-ewere oke ihe kachasị elu nke mgbanwe na obere njupụta dị ka ọnụ ahịa kachasị elu, ma ọ bụghị ya, a na-eji uru kacha nta;A na-eji oke ịgbado ọkụ dị ugbu a na obere ịgbado ọkụ maka oke mkpokọta, a na-eji uru kacha nta na-emegide.Mgbe iru mmiri dị elu, a ga-akpọnwụ ntugharị ahụ tupu ejiri ya.Sulfur cracking (mgbawa nke sọlfọ kpatara).Mgbawa nke sulfide na-akpata na eriri sọlfọ nkewa nke na-abanye na igwe weld mgbe ị na-agbado efere nwere eriri sọlfọ siri ike (karịsịa nchara na-esi ísì ụtọ).Ihe kpatara nke a bụ ọnụnọ nke hydrogen na iron sulfide na ígwè nwere ebe mgbaze dị ala na mpaghara nkewa sọlfọ.Ya mere, iji gbochie nke a ime, ọ dịkwa irè iji ígwè na-egbu egbu ma ọ bụ gbuo ya na obere eriri nke nwere sọlfọ nwere.