Barokun labanw na, an ye kuma sɔrɔ sababuw yɔrɔ dɔw kan ani pipe welded pipe defects inox weldalen nafamafɛnw. Bi, an bɛ to ka u tɔw lajɛ.
6. crater .
Yɔrɔ min bɛ jigin, o bɛ wele ko welda weldalen pipe laban na, o bɛ wele ko arc crater. Arc Crater tɛ dɔrɔn ka welda fanga dɔgɔya kosɛbɛ yen, nka a bɛ arc crater faraw fana bɔ ka da nɔgɔw hakɛ kan.
A sababuw: A kunba ye ko arc fagali waati ka surun kojugu; Kuran ka bon kojugu ni a bɛ tasa finmanw welding.
Bana kunbɛncogo : Ni elekitorozɛni sɔgɔli bɛ datugu, elekitorode ka kan ka to jidaga kɔnɔ waati dɔ kɔnɔ walima ka boli ka taa lamaga-lamagali la, ka sɔrɔ ka taa fan kelen fɛ walasa ka arc faga ni nɛgɛ ye min falen don nɛgɛ la Ni tungsten argon arc welding, a ka kan ka se ka kɛ waati bɛ dɔgɔya ani arc bɛ faga welda falen kɔfɛ.
7. Stomata .
Ni saniyalan inox weldalen pipew welding, gazi min bɛ jidaga kɔnɔ, o tɛ se ka boli ni a sabatira ani ni a bɛ kɛ ni kɔnɔnatumuw ye minnu bɛ to ka kɛ, olu bɛ wele ko porow. Porozɛ ye welding nafama ye min bɛ sɔrɔ tuma bɛɛ, min bɛ se ka tila ka kɛ porosity kɔnɔna ye ani kɛnɛma porosite ye welda kɔnɔ. Stomata ye bulama ye, oval, fɛnɲɛnamaw cogoya, a bɛ kɛ i n’a fɔ a bɛ kɛ cogo min na ani a ka bon. Pores ka sɔrɔ tɛna nɔ bila welda ka ɲɔgɔnkanu dɔrɔn na, nka a bɛna dɔ bɔ fana welda yɔrɔ nafama na ani ka welda ka masina cogoyaw dɔgɔya.
A sababuw: Tumu, nɔgɔ, nɔgɔ ani nɔgɔ wɛrɛw bɛ sɔrɔ a sanfɛla la ani a sɔgɔlilan min bɛ kɛ ni nɛgɛ ye min tɛ sɔgɔ; Elektɔri dacogo bɛ ɲigi arc welding waati la wa a ma ja sani a ka kɛ; Arc janya ka bon walima a yɔrɔ dɔ bɛ fiɲɛ bɔ, a bɛ wuli ka bɔ pool protection effect la, fiɲɛ bɛ don pool wulilen na; welding current ka bon kojugu, elekitorode bɛ kɛ bilen ye, a da bɛ bin joona, ani a lakanani nɔ bɛ tunun; Opereli fɛɛrɛ ma bɛn, i n’a fɔ arc dadon wale teliya kojugu, a ka nɔgɔn ka shrinkage cavity dilan, ani arc striking action ka action striking or correct, o min ka nɔgɔn ka stomata dense, a ɲɔgɔnnaw dilan.
Bana kunbɛn fɛɛrɛw : Sani aw ka welding kɛ, aw bɛ tulu, nɔgɔ, ani ji bɔ 20-30mm kɔnɔ jirisun fan fila bɛɛ la; Aw bɛ a tobi ka kɛɲɛ ni funteni ni waati ye min ɲɛfɔlen don elekitorode gafe kɔnɔ; Aw bɛ welding process parameters sugandi ka ɲɛ ani ka baara kɛ ka ɲɛ; Baara kɛ ni arc surun ye i n’a fɔ a bɛ se ka kɛ cogo min na, foro jɔli ka kan ka kɛ ni fiɲɛ tɛ se ka don minnu na; Elektɔri tiɲɛnenw man kan, i n’a fɔ welding core corrosion, coating cracking, peeling, excessive eccentricity, etc.
8. Donni ni slag inclusions .
Kɔnɔnafɛnw donli ye nɛgɛ ye min tɛ nɛgɛ ye ani ɔkisizɛni minnu bɛ to welda nɛgɛ la min bɛ sɔrɔ nɛgɛko walew fɛ. Slag inclusions ye slag molten ye min bɛ to welda la. Inox welded pipe slag inclusions bɛ se ka tila suguya fila ye: spot slag inclusions ani strip slag inclusions. Slag inclusion bɛ welda yɔrɔ nafama dɔgɔya, o bɛ dɔ bɔ welda ka masina cogoyaw la. Slag inclusions fana bɛ se ka degun hakɛ sɔrɔ, o bɛ se ka weldalen jɔcogo tiɲɛ nɔgɔya la ni a doni bɛ a la. A sababuw: Interlayer slag tɛ saniya welding kɛtuma na; welding current ka dɔgɔ kojugu; welding teliya bɛ teliya kojugu; Opereli in ma bɛn welding kɛtuma na; Sogo ni nɛgɛ basigilen ka kemikaliya cogoya tɛ bɛn ka ɲɛ;
Bana kunbɛn fɛɛrɛw: Aw bɛ elekitorodew sugandi ni sɔgɔsɔgɔninjɛ bɔli baara ɲuman ye; Aw bɛ interlayer slag bɔ ka ɲɛ; welding process parameters (sɔgɔli taabolo paramɛtɛrɛw) sugandi cogo bɛnnen na; Aw bɛ elekitorode angle ni transport fɛɛrɛ ladilan.
Ni a bɛ a sugandi . weldad pipe production line , aw bɛ se ka jateminɛ kɛ ka PLC sitɛmu hakilitigi dɔ sigi sen kan. Hangao Tech (Seko Machinery) PLC sitɛmu tɛ se ka dɔrɔn ka sɛnɛfɛnw dilanni kunnafoniw kɔlɔsi waati yɛrɛ la, nka u bɛ kunnafonidilan dɔ fana sigi sen kan walasa ka welda pipew dilanni formuw mara minnu bɛ fɛn dɔw ɲɛfɔ, walasa fɛn dilanni taabolo ka se ka don kunnafonidilan sɛbɛnw kɔnɔ waati o waati.
9. Aw bɛ jeni ka tɛmɛ .
O sɔgɔli waati la, nɛgɛ wulilen bɛ bɔ ka bɔ jiribolo kɔfɛ, wa, nɛgɛ min bɛ sɔgɔ ni nɛgɛ ye, o ka perforation defact (dafalen nafama) bɛ wele ko jeninida. Burn-through ye arc welding ka fiɲɛw dɔ ye.
A sababuw: welding current belebele, slow welding teliya, pipe weldalen sumaya kojugu; groove gap belebele, da flunt dama ka bon; welda baarakɛcogo jugu, a ɲɔgɔnnaw.
Bana kunbɛn fɛɛrɛw: Aw bɛ welding processus parameters bɛnnenw sugandi ani groove hakɛ bɛnnen; welda ka baarakɛcogo ɲuman, a ɲɔgɔnnaw ɲɛ.
10. faraw .
Saniyalan inox welded pipes kariw bɛ se ka tila ka kɛ faraw ye minnu ka nɛnɛ, kariw ani ka faraw sumaya kokura ka kɛɲɛ ni u bɛ kɛ funteni ni waati min na; U bɛ se ka tila ka kɛ faraw ye minnu janya ka jan, ka faraw kɛ ka bɔ ɲɔgɔn na, ka jiribuluw fara, ka arc crater cracks, fusion line cracks ani heat-affected zone cracks, etc. Ka faraw ye faratiw ye minnu farati ka bon kosɛbɛ weldalenw na, minnu tɛna kɛ sababu ye dɔrɔn ka fɛnw tiɲɛ, nka u bɛ se ka kɛ hali kasaara juguw ye.
(1) ka fara kari .
O sɔgɔli waati la, welding cracks minnu bɛ Bɔ welding seam ni nɛgɛ la min bɛ funteni-ko-yɔrɔ nɛnɛ na ka Se funteni hakɛ caman ma solide layini kɛrɛfɛ, olu bɛ Weele ko cracks hot. O ye farati ye min bɛ se ka kɛ welding defect ye min man kan ka kɛ. Ka kɛɲɛ ni fɛɛrɛ ye, funteni hakɛ ni a cogoya weldalen pipe thermal cracks, funteni yɔrɔw bɛ se ka tila ka kɛ kristalize kariw ye, ka funteni caman kɛ liquefaction cracks ani ka funteni caman kɛ ka faraw ka funteni dɔgɔya.
Kun : Kunba min bɛ sɔrɔ a la, o ye ko fɛnɲɛnamafagalan ni nɔgɔ minnu bɛ sɔrɔ pool nɛgɛ wulilen na, olu bɛ kɛ intragranular ani intergranular segregation (dantigɛli jugu) ye kristalize (kirisitali) kɛcogo la, ani o waati kelen na, welding stress (sɔgɔli degun) waleyali kɔrɔ. Sumanw dancɛw bɛ sama ka bɔ ɲɔgɔn na, ka faraw kɛ minnu ka suma. A ka ca a la, a ka ca a la, a bɛ kɛ ni austenitic inox, nickel alloy ani aluminium alloy ye. A ka c’a la, nɛgɛ min ka dɔgɔn, o man nɔgɔn ka faraw dilan ni funteni ye welding waati la, nka ni nɛgɛ ka karɔbɔli hakɛ bɛ caya, kari ka caya, o fana bɛ bonya. Bana kunbɛn fɛɛrɛw : Aw bɛ nɔgɔ juguw hakɛ kɔlɔsi kosɛbɛ i n’a fɔ kisɛkisɛ ni fosiporozɛni pipew ni welding fɛnw na minnu bɛ kɛ ni nɛgɛ ye, olu bɛ dɔ bɔ faraw ka funteni hakɛ la Aw bɛ nɛgɛ welda ka kemikaliya kɛcogo ladilan, ka weldacogo ɲɛ, ka sumanw labɛn, ka plasitiki ɲɛ, ka danfara hakɛ dɔgɔya walima ka a jɛnsɛn; Aw bɛ baara kɛ ni alkalini welding fɛnw ye walasa ka nɔgɔw kɔnɔkow dɔgɔya welda kɔnɔ ani ka danfara hakɛ ɲɛ; welding process paramètres bɛnnenw sugandi, ka dɔ fara weld formation factor kan cogo bɛnnen na, ani ka multi-layer ani multi-pass welding fɛɛrɛ ta; Aw bɛ baara kɛ ni nɛgɛ basigilen ye min bɛ bɔ nɛgɛ basigilen na, walima ka arc faga dɔɔni dɔɔni, ka sɔrɔ ka arc crater fa walasa ka aw tanga funteni yɔrɔw ma minnu bɛ kɛ ni funteni ye arc crater la.
(2) Nɛnɛ bɛ bɔ yɔrɔ min na .
Fara minnu bɛ Bɔ ni joli weldalen nɛnɛna fo ka Se funteni hakɛ dɔgɔman ma (ka Kɛ nɛgɛ ye min bɛ M. funteni duguma) olu bɛ Weele ko faraw nɛnɛma. Nɛnɛ bɛ se ka bɔ joona welding kɔfɛ, walima a bɛ se ka waati dɔ ta (lɛrɛw, tile walima hali ka tɛmɛ o kan) ka bɔ. O kari sugu bɛ Weele fana ko delayed crack. Faratiba don.
Kunw : Martensite jiginni ye fɛn min ye, o ye fɛn ye min bɛ se ka kɛ fɛn ye min bɛ sɔrɔ welding residual stress fɛ min bɛ sɔrɔ balili hakɛba fɛ, ani hydrogène min bɛ to welda la, o ye fɛnba saba ye minnu bɛ farigan bila kari.
Bana kunbɛn fɛɛrɛw : Aw bɛ welding fɛnw sugandi minnu ka dɔgɔn, ka u tobi ka kɛɲɛ ni laadilikanw ye ka sɔrɔ ka baara kɛ ni u ye; Aw bɛ tulu ni ji bɔ welda la sani aw ka welding kɛ, ka dɔ bɔ hidrɔzɛni hakɛ la welda la; Aw bɛ welding process paramètres (sɔgɔli kɛcogo paramɛtɛrɛw) ni funteni doncogo ɲuman sugandi walasa ka dɔ bɔ welda seam (sɔgɔli) gɛlɛyali nege la; Idɔrɔzi bɔli furakɛli bɛ kɛ o yɔrɔnin bɛɛ la welding kɔfɛ walasa ka hidrɔzɛni boli ka bɔ joli weldalen na; Walasa ka pipe welded inox ni a gɛlɛyali ka bon, ka sumaya sani a ka welding ni funteni furakɛli kɛ waati kɔnɔ welding kɔfɛ, o bɛ se ka joli jɔcogo n’a jogo ɲɛ. Se; Aw bɛ fɛɛrɛ suguya caman ta walasa ka dɔ bɔ welding stress la.
(3) Reheat Cracks .
A welding kɔfɛ, inox welded pipe bɛ sumaya kokura funteni hakɛ dɔ kɔnɔ (degun furakɛli funteni furakɛli walima funteni kɛcogo wɛrɛ) ani a faraw bɛ wele ko reheat cracks.
A sababuw: A ka ca a la, nɛgɛ minnu fanga ka dɔgɔn, olu bɛ sɔrɔ nɛgɛw la minnu fanga ka dɔgɔn, nɛgɛ minnu bɛ se ka funteni sɔrɔ ani nɛgɛ minnu tɛ sɔgɔ, vanadium, chromium, molybdenum, boron ani fɛn wɛrɛw bɛ minnu na. welding thermal cycle kɔfɛ, u bɛ sumaya fo ka se yɔrɔ ma min bɛ se ka sɛgɛsɛgɛ (550 ~650°C). O faraw fanba bɛ Bɔ welding heat-affected zone (yɔrɔ min bɛ Weele ko welding heat-affected zone) yɔrɔ gɛlɛn na. Reheat cracks fanba bɛ sɔrɔ pipe weldalen ni degun hakɛ yɔrɔw la, wa reheat cracks bɛ sɔrɔ tuma dɔw la welding caman na.
Bana kunbɛn fɛɛrɛw : Ka da a kan ka dilancogo wajibiyalenw dafa, ka weldingɛw sugandi minnu fanga ka dɔgɔn, walasa welda fanga ka dɔgɔya ka tɛmɛ nɛgɛ basigilen ta kan, ani degun bɛ lafiya welda la walasa ka fara kariw kan funteni bɛ yɔrɔ min na ka degun tolenw ni degunw hakɛ dɔgɔya; Aw bɛ pipe weldalen ka welding heat input (sumaya funteni donta) kɔlɔsi, ka premote (premote) ni funteni furakɛli funteni sugandi cogo bɛnnen na, ani ka aw yɛrɛ tanga yɔrɔ ma min bɛ se ka kɛ.
