Hangao Tech (Seko masin), min ka baara ye san 20 ye yiriwali ni a dilanni na. Inox Industrial welded pipe production line equipment , o bɛna taa ni i ye walasa ka welding heat-affected zone cogoya danfaralenw faamuya welding kɛtuma na ani a nɔ min bɛ sɔrɔ welda cogoya la.
Sumaya-yɔrɔ (HAZ) min bɛ welding (sɔgɔli) la, o ni welda tɛ kelen ye. welding seams bɛ se ka ladilan, ka tila ka tila ka kɛ welding kɛcogo ɲuman ye nɛgɛ basigilen ka kemikaliya cogoya fɛ walasa ka baara kɛcogo wajibiyalenw sabati. Nka, a tɛ se ka kɛ ka funteni-yɔrɔ-yɔrɔ baarakɛcogo ladilan ni kemikoro-ko ye. O ye gɛlɛya ye min bɛ sɔrɔ farikolo yɔrɔw tilatilali cogo bɛnbali la, o bɛ kɛ dɔrɔn funteni wotoroninw ka wale kɔrɔ. Ka ɲɛsin fɛnw bɛɛ lajɛlen weldalenw ma, fɛn naani minnu bɛ kɛ ka fɛnw bɔ kɛnɛ kan, ka u gɛlɛya, ka u gɛlɛya, ka u gɛlɛya, ani ka u nɔgɔya, olu bɛ jateminɛ kosɛbɛ, ka fara masinw cogoya bɛɛ kan, u ka sɛgɛncogo, ani u ka fɛnw sɔgɔli. O ka kan ka latigɛ ka kɛɲɛ ni baarakɛcogo kɛrɛnkɛrɛnnenw ye minnu bɛ sɔrɔ weldalen sigicogo la.
1. welding heat-affected zone gɛlɛyali .
Welding heat-affected zone gɛlɛya bɛ bɔ kosɛbɛ basigifɛn ka kemikaliya ni a nɛnɛ cogoyaw la minnu ka kan ka welda. A kunba ye ka nɛgɛ suguya nɛgɛmafɛnw ka nɛgɛ suguya jira. Gɛlɛya sɛgɛsɛgɛli bɛ nɔgɔya ka tɛmɛ. O la, hmax min ka bon kosɛbɛ funteni-ko-yɔrɔ la (a ka c’a la fusion zone kɔnɔ) o bɛ Kɛ ka funteni-yɔrɔ-yɔrɔ baarakɛcogo jateminɛ. A bɛ se ka kɛ ka funteni-banakisɛ-yɔrɔ gɛlɛya, a kari ani a ka kari-karili kofɔ cogo la min tɛ ɲɛ. San laban ninnu na, HMAX of HAZ jatera taamasiyɛn nafama ye walasa ka welda jateminɛ. A ka kan ka jira ko hali jɛkulu kelen kɔnɔ, gɛlɛya wɛrɛw bɛ yen. O bɛ tali kɛ kosɛbɛ nɛgɛ basigilen, alifɛnw cogoya ani nɛnɛ cogoyaw la. O la, a ka ɲi ka baara kɛ ni nɛgɛ ye min bɛ dilan ni a dilannikɛla ye min bɛ se ka da a kan ani min bɛ kɛ tuma bɛɛ walasa ka a welding kɛ walasa a ka sabati.
2. Sumaya min bɛ sɔrɔ welding (suma) fɛ, o tiɲɛni .
Welding heat-affected zone embrittlement bɛ kɛ tuma caman na joli-sira-funu-kɔnɔ-fɛnw karili ni u tiɲɛni tiɲɛni sababuba ye. Ka kɛɲɛ ni sisan fɛn dilanni kunnafoniw ni kunnafoniw ye, fɛn minnu bɛ bɔ fɛnw na, olu ye kristalɛw ka fɛnw ye minnu bɛ se ka kɛ kristalɛ ye, sanjiko, sɛgɛnlafiɲɛbɔ min bɛ kɛ ni funteni ye, o ye fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ ka fɛnw ye minnu bɛ se ka kɛ ka fɛnw ye minnu bɛ se ka kɛ ka fɛnw ye minnu bɛ se ka kɛ ka fɛnw ye.
1) kristalɛ sɔgɔlen gɛlɛn. K’a sababu kɛ fɛnɲɛnamafagalan ye, sumanmugu gɛlɛya bɛ sɔrɔ fusili sira kɛrɛfɛ ani joli weldalen yɔrɔ min sumayalen don kosɛbɛ. Sumanmugu gɛlɛnw bɛna nɔba bila nɛgɛ basigilen jɔcogo tiɲɛni na. A ka c’a la, ni suman hakɛ ka bon, o bɛ kɛ sababu ye ka brittle transition temperature sɔrɔ.
2) Sanji ni a kɔnɔna na. Kɔrɔya walima funteni waati la, karbidiw, nitiridiw, nɛgɛw ni ɲɔgɔn cɛ fɛnɲɛnamafagalanw ani cɛmancɛlafɛn wɛrɛw bɛna teliya ka kɛ solide solide solide supersatura ye. O fasa kura minnu bɛ teliya, olu bɛ dɔ fara nɛgɛ walima nɛgɛw fanga, u gɛlɛya ani u tiɲɛni kan. O ko in bɛ Weele ko sanji-bɔli.
3) tissu embrittlement. Embrittlement min bɛ sɔrɔ brittle ni hard structure fɛ welding haz kɔnɔ, o bɛ wele ko structure embrittlement. Ni aw bɛ baara kɛ ni nɛgɛ ye min ka teli ka kɛ ni karɔbɔni ye, nɛgɛ minnu fanga ka bon, olu ka ca, HAZ weldalen jɔcogo bɛ sɔrɔ kosɛbɛ MA yɔrɔ la, Bainite sanfɛla, ani WidmanStatten jɔcogo gɛlɛn. Nka nɛgɛ minnu hakɛ ka ca (a ka c’a la, ≥0,2%), o jɔli in bɛ sɔrɔ kɛrɛnkɛrɛnnenya la martensite karibonba fɛ.
4) Haz. A ka kan ka baara kɛ ni fɛn dilanni ye, i n’a fɔ fɛnw, sɔgɔli, nɛnɛ, gazi tigɛ, sɔgɔli ani funteni baara wɛrɛw. Sigida sɛgɛn ni plastiki tiɲɛni minnu bɛ sɔrɔ o baara ninnu fɛ, olu bɛ nɔba bila HAZ weldalen ka dumunikɛcogo la. O baarakɛcogo fɛɛrɛw bɛ mɔgɔ minɛ cogo min na, o bɛ wele ko thermal strain aging embrittlement. Kɔrɔya kɔrɔya sɛgɛn bɛ se ka tila ka kɛ degun kɔrɔya sɔgɔli ye ani ka kɔrɔya sɛgɛsɛgɛli barikama kɛ. Jɛnkulu la, 'Blue brittleness' bɛ kɔrɔya barikama dinamiki ko la.
3. Toughening of welding heat affected zone .
Welding HAZ ye farikolo ye min tɛ kelen ye a jɔcogo n’a baarakɛcogo la. Fusion zone ani coarse-grained zone bɛ teli ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka kɛ fɛn ye min bɛ se ka fɛnw tiɲɛ. O la, a ka kan ka haz weldalen ka gɛlɛya bonya. Sɛgɛsɛgɛliw y'a Jira ko nin fɛɛrɛ fla ninnu bɛ Se ka Kɛ ka HAZ gɛlɛya.
1) ka jɛkulu ɲɛminɛ. Nɛgɛ min ka dɔgɔn, o ka kan ka karɔbɔli hakɛ kɔlɔsi, walasa aliyɛli fɛn sigicogo ka kɛ fanga dicogo ye min bɛ kɛ ni fɛn caman ye minnu bɛ kɛ ka fɛnɲɛnamafagalanw caman sɔrɔ. O de kosɔn, welding nɛnɛ cogoyaw la, HAZ bɛ tila ni fɛnɲɛnamafagalanw ye minnu fanga ka bon, ani martensite (martensite) min bɛ kɛ ni carbone dɔgɔman ye, bainite duguma ani acicular ferite (acicular ferite) bɛ sɔrɔ a jɔcogo la ni gɛlɛya ɲuman ye. Filanan, suman dancɛw danfara ka kan ka mara cogo min na.
2) Furakɛcogo gɛlɛn. A ka ca a la, fɛn nafama dɔw bɛ baara kɛ ni funteni furakɛli ye welld kɔfɛ walasa ka kolotuguda baara ɲɛ. Nka, fɛn belebelew ni fɛn gɛlɛnw dɔw bɛ sigida funteni furakɛli ta, o min ka gɛlɛn ka tɛmɛ baara yɛrɛ kan. O la, welding heat input sugandili ɲuman, welding kɛcogo ɲuman labɛnni, ani funteni ni funteni kɔfɛ funteni ladilanni ye fɛɛrɛ ɲumanw ye walasa ka sɔgɔli gɛlɛya sabati.
Ka fara o kan, fɛɛrɛ wɛrɛw bɛ yen minnu bɛ se ka kɛ ka HAZ ka gɛlɛya sabati. Misali la, nɛgɛ finman bɛ fɛɛrɛ kɔrɔsilen dɔ ta walasa ka feriti sumanw nɔgɔya ka taa a fɛ, o fana bɛna fɛn in gɛlɛyali ɲɛ. O bɛ Bɔ nɛgɛ basigilen yɛrɛ kɔnɔfɛnw na wa a bɛ tali Kɛ sɔgɔli fɛɛrɛ la.
Naaninan, welding heat-affected zone nɔgɔyali .
Nɛgɛw walima nɛgɛw minnu barika ka bon ni nɛnɛ baara gɛlɛyali walima funteni furakɛli ye sani u ka welding, vecteur fanga hakɛ danfaralenw bɛna kɛ caman na welding heat-affected zone kɔnɔ. A ka c’a la, nɛgɛ minnu fanga ka bon, olu ye fɛn minnu ye, olu ye fɛn ye min bɛ se ka wuli ka bɔ a nɔ na, ani nɛgɛ minnu bɛ kɛ ni sanji ye, olu barika bonya ni u jɛnsɛnni barika bonya, ani nɔgɔya walima vektɔri fanga min bɛ sɔrɔ funteni fɛ yɔrɔ la, a welding kɔfɛ. Ni nɛgɛ min bɛ kirin ani min bɛ wuli, o bɛ HAZ nɔgɔya hakɛ bɛ tali kɛ basigifɛn ka funteni furakɛli cogoya la sani a ka sɔgɔ. Ni furakɛli min bɛ kɛ ka mɔgɔw faga ani min bɛ kɛ ka a wuli, o funteni bɛ dɔgɔya ka sɔrɔ ka nɛgɛ basigilen welding kɛ, fanga bonya hakɛ bɛ bonya, o bɛ kɛ sababu ye ka fɛnw nɔgɔya, minnu bɛ kɛ ka fɛnw wuli ka bɔ ɲɔgɔn na, olu bɛ kɛ ka caya. Sɛgɛsɛgɛli waleyali caman b’a jira ko ni welding fɛɛrɛ danfaralenw ni welding wire fanga danfaralenw kɛra, nɔgɔya jɔyɔrɔ min ka bon kosɛbɛ HAZ kɔnɔ, o ye A1-A3 hakɛ ye.
