Austenitic inoless steel ka welding cogoyaw: sɛgɛn ni plastiki degun ni degun welding kɛtuma na, olu ka bon kosɛbɛ, nka nɛnɛ kariw man teli ka ye. Kɔrɔya gɛlɛya yɔrɔ ni sumanw sɛgɛsɛgɛli tɛ kɛ welda la, o la, welda ka tension fanga ka bon kosɛbɛ.
Gɛlɛyabaw minnu bɛ sɔrɔ austenitic inox welding na: welding deformation belebele; K’a sababu kɛ a suman dancɛ cogoya n’a sɛgɛsɛgɛli ye nɔgɔ dɔw la minnu bɛ sɔrɔ (s, p), a ka nɔgɔn ka faraw bɔ minnu ka suma.
welding gɛlɛyabaw duuru ani furakɛli fɛɛrɛ minnu bɛ kɛ ni nɛgɛ ye min tɛ sɔgɔ .
01 Kɔrɔmu karɔti sɔrɔli bɛ dɔ bɔ welda ka seko la ka se ka fɛnɲɛnamafagalanw ni ɲɔgɔn cɛ sɔgɔli kunbɛn.
Kɔnɔnatumuw ni ɲɔgɔn cɛ : ka kɛɲɛ ni chrome dɔgɔyali miiriya ye, chromium carbide bɛ jigin suman dancɛw kan ni welda ni funteni bɛ yɔrɔ min na, o bɛ sumaya ka se sensitization temperature zone ma min ye 450-850°C ye, o bɛ na ni chromium-depleted grain danw ye, minnu tɛ se ka corrosion kɛlɛ.
(1) Nin fɛɛrɛ ninnu bɛ se ka kɛ walasa ka dan sigi welda seam ni sɔgɔli cɛ sɛgɛsɛgɛli funteni hakɛ yɔrɔ la laɲinifɛn kan:
kelen. Aw bɛ nɛgɛ basigilen ni welda ka karɔbɔli hakɛ dɔgɔya, ka sabatilifɛnw TI, NB ani fɛn wɛrɛw fara nɛgɛ basigilen kan walasa ka fɔlɔ ka MC dilan walasa ka CR23C6 sɔrɔli bali.
B. Aw bɛ welda kɛ austenite ka fasa fila ye ani ka kɛ ferite hakɛ fitinin ye. Ni ferite hakɛ dɔ bɛ welda la, sumanw bɛ se ka nɔgɔya, suman yɔrɔ bɛ se ka caya, ani chromium carbide sanji bɛ se ka dɔgɔya yɔrɔ kelen na, suman dancɛ bɛ se ka dɔgɔya.
Kɔrɔmu bɛ wuli kosɛbɛ feriti la. CR23C6 bɛ sɔrɔ ka ɲɛ ferite la k’a sɔrɔ a ma kɛ sababu ye ka austenite suman danw dɔgɔya chromium kɔnɔ; Ferite min bɛ jɛnsɛn ɔsitiniw ni ɲɔgɔn cɛ, o bɛ se ka kɛ sababu ye ka sumanw dancɛ bɔ ka taa kɔnɔna yaala la.
C. Aw bɛ sigiyɔrɔ waati kɔlɔsi sensibilisasiyɔn funteni hakɛ la. Aw bɛ welding thermique cycle ladilan, aw bɛ 600～1000°S sigiyɔrɔ surunya, ka welding fɛɛrɛ dɔ sugandi ni fanga hakɛ caman ye (i n’a fɔ plasma argon arc welding), ka welding heat input fitinin dɔ sugandi, ani ka argon gazi kɛ welda kɔfɛ walima ka baara kɛ ni kuran ye min bɛ kɛ ka a sɔrɔ a bɛ se ka kɛ ko a bɛ se ka a yɛrɛ tanga welded ma, ani ka a laban ni a laban ye ani ka a laban ni a laban ye. Ni fɛnɲɛnamafagalan ye min bɛ kɛ ni fɛn caman ye, o ka kan ka welda laban na.
D. A welding kɔfɛ, aw bɛ furaji furakɛli walima stabilisation annealing (850～900°C) ani fiɲɛ nɛnɛni kɛ walasa ka karɔti charge ka bɔ ani ka chromium jɛnsɛnni teliya).
(2) welda minnu bɛ kɛ ni muru ye, olu sɔgɔli. O de kama, nin banakunbɛn fɛɛrɛw bɛ se ka tigɛ:
K’a sababu Kɛ karɔbɔli jɛnsɛnni seko barikama ye, a bɛna danfara Bɔ suman dancɛ la ka Kɛ supersaturated state ye nɛnɛ waati la, k’a sɔrɔ Ti ni NB bɛ To kristalɛ la k’a sababu Kɛ diffusion seko dɔgɔyali ye. Ni welda sumayalen don tuguni sensibilisation temperature range la, supersaturated carbon bɛna teliya CR23C6 cogo la kristalɛw ni ɲɔgɔn cɛ.
kelen. Aw bɛ dɔ bɔ kabon hakɛ la. Ni fɛnw tɛ intan ye, ni fɛnw bɛ sabati, kabon hakɛ man kan ka tɛmɛ 0,06% kan.
B. Aw bɛ baara kɛ ni welding kɛcogo ye min bɛ bɛn. Aw bɛ welding heat input fitinin dɔ sugandi walasa ka yɔrɔ sumayalen sigiyɔrɔ waati dɔgɔya funteni caman na, ani ka aw janto a la ka aw yɛrɛ tanga 'medium temperature sensitization' nɔ ma welding kɛtuma na.
Ni welding fila-fila, welda min bɛ ɲɔgɔn sɔrɔ ni fɛnɲɛnamafagalan ye, o ka kan ka welda laban na (o de ye sababu ye min b’a to welding kɔnɔna na, weldali weldalen pipew kɔnɔna bɛ kɛ kɛnɛma welding kɔfɛ). Ni a tɛ se ka waleya, welding specification ani welda cogoya ka kan ka ladilan, ani k’a ɲini ka i yɛrɛ tanga yɔrɔ ma min sumayalen don kosɛbɛ ni a bɛ maga fɛnɲɛnamafagalan na, o bɛ sɛgɛsɛgɛ kokura ani ka sumaya.
C. Sumaya furakɛli kɔfɛ. Aw bɛ furaji walima sabatili furakɛli kɛ welding kɔfɛ.
02 Degun sɔgɔli kari .
Nin fɛɛrɛ ninnu bɛ se ka kɛ walasa ka degunw sɔgɔli balili bali:
kelen. Aw bɛ fɛnw sugandi ka ɲɛ ani ka welda labɛncogo ladilan cogo bɛnnen na. Kɔrɔmu-nickel austenitic stainless steel, high silicon chromium-nickel austenitic austenitic inoless steel, ferritic-austenitic stainless steel, high-chromium ferritic stainless steel, etc. olu bɛ degun ɲuman sɔrɔ, ani weld nɛgɛ ye austenitic resistance ɲuman ye min bɛ se ka kɛ ni degun ye min bɛ kɛ ni fɛnɲɛnamafagalan ye.
B. Degun tolenw bɔ yen walima ka dɔ bɔ u la. A bɛ se ka kɛ ka funteni furakɛli kɛ ni degun ye min bɛ mɔgɔ degun kɔfɛ, i n’a fɔ Atmosphère de protectif on-line heat treatment induction annealing furnace . a bɛ induction sofa sariyakolo ta. A bɛ yeelen bɔ annealing foro la. Hangao Tech (Seko Machinery) tɛ se ka funteni sɔrɔ, a bɛ sekɔndi 15 dɔrɔn de ta walasa ka se teliya la ka se annealing temperature ɲuman ma. O waati kelen na, fiɲɛ ka gɛlɛn ka tɛmɛ, o bɛ se ka fiɲɛ bila kɔfɛ ka ɲɛ sɛgɛnlafiɲɛbɔ waati la. Pipe weldalen min dilannen don ni nɛgɛ ye, o bɛ ni nɛgɛ jɔcogo kelen ye ani a ni ɲɔgɔn cɛ degun bɛ dɔgɔya. Ka fara o kan, masinw ka fɛɛrɛw i n’a fɔ polisi, sɔgɔli ani marifaci fana bɛ se ka dɔ bɔ degun tolenw na.
C. sigicogo ɲuman sigicogo. Walasa ka i yɛrɛ tanga degunba ma.
