Austenitic inox welding cogoyaw: sɛgɛn ni plastiki degun ni degun welding kɛtuma na, olu ka bon kosɛbɛ, nka nɛnɛ bɛ bɔ kariw la minnu man teli ka ye. quench hardening zone tɛ yen ani grain coarsening in the weldad joint, o la welda ka tension fanga ka bon.
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 .
1. Kɔrɔmu karɔti sɔrɔli bɛ dɔ bɔ joli weldalenw ka seko la walasa 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 ka dan sigi welda seam ni sensitization temperature yɔrɔ cɛ fɛn laɲininen kan:
a. Aw bɛ nɛgɛ basigilenw ni weldaw ka karɔbɔli hakɛ dɔgɔya, ka fɛn sabatilenw 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 fasa fila ye ani ferite hakɛ fitinin. 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 kɛ ??Sɛnɛ 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 thermic 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 funteni doncogo fitinin sugandi, ka tɛmɛ argon kan welda kɔ kan 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 ni a bɛ se ka a yɛrɛ tanga ni a bɛ se ka a yɛrɛ tanga ni a bɛ se ka a yɛrɛ tanga ni a bɛ se ka a yɛrɛ tanga ni a bɛ se ka a yɛrɛ tanga ni a bɛ se ka a yɛrɛ tanga ni a bɛ se ka a yɛrɛ tanga o ma. Fɛn min bɛ kɛ ka fɛnw sɔgɔ, o ka kan ka welda cogo laban na.
D. A welding kɔfɛ, aw bɛ furaji furakɛli walima stabilisation annealing (850～900°C) ani fiɲɛ nɛnɛni kɛ walasa ka karbidiw kɛ charge ka bɔ ani ka chromium jɛnsɛnni teliya).
(2) Jogindaw weldalenw sɔgɔli cogo min bɛ kɛ ni muru ye. O de kama, nin banakunbɛn fɛɛrɛ ninnu bɛ se ka tigɛ :
k’a sababu kɛ karɔbɔni jɛnsɛnni seko barikama ye, a bɛna danfara don suman dancɛ la ka kɛ supersaturated state ye nɛnɛ waati la, k’a sɔrɔ Ti ni NB bɛ to kristalɛ la ka da yaala seko dɔgɔyali kan. Ni joli weldalen in sumayalen don tuguni sensibilisation temperature hakɛ la, supersaturated carbone bɛna jigin 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 aw ye aw janto a la ka aw yɛrɛ tanga 'medium temperature sensitization' effect 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 walasa yɔrɔ min ka suma kojugu ni a bɛ maga fɛnɲɛnamafagalan na, o bɛ se ka sɛgɛsɛgɛ kokura ani ka sumaya.
C. Sumaya furakɛli kɔfɛ. Aw bɛ furaji walima sabatili furakɛli kɛ welding kɔfɛ.
2. Degun sɔgɔli kari .
Nin fɛɛrɛ ninnu bɛ se ka kɛ walasa ka degunw sɔgɔli bali ka kɛ:
a. 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. Aw bɛ degunw lafiyali kɔfɛ sumaya furakɛli kɛ, ani ka baara kɛ ni masinw ye i n’a fɔ polishing, shot peening ani martoing walasa ka degun tolenw dɔgɔya.
C. sigicogo ɲuman sigicogo. Walasa ka i yɛrɛ tanga degunba ma.
3. welding hot cracks (crystallization cracks in welds, liquefaction cracks in the heat-affected zone)
Sumaya karili ka teli ka kɛ kɛrɛnkɛrɛnnenya la, o bɛ bɔ fɛnw dilanni na, u labɛncogo la ani u kɛcogo la. Ni ka nɔgɔn ka low melting point compounds walima etectic sɔrɔ ni nɔgɔw ye i n’a fɔ S ani P. Boron ni silicon danfara bɛna funteni karili sabati. O welda ka nɔgɔn ka kɛ kristalɛ kulu gɛlɛn ye min bɛ ni sirako barikama ye, min bɛ nafa don nɔgɔ juguw ni fɛnw danfara la. O bɛ kɛ sababu ye ka filimu jilama dɔ sigi sen kan min bɛ to senna ani ka funteni karili sɛgɛsɛgɛli ɲɛ. Ni welding ma sumaya cogo kelen na, a ka nɔgɔn ka degunba dɔ dilan ani ka welding hot cracks (sɔgɔli funteni) bɔli sabati.
Banakunbɛn fɛɛrɛw:
a. Aw bɛ nɔgɔ juguw kɔnɔkow kɔlɔsi kosɛbɛ S ani P.
b. Aw bɛ welda nɛgɛ jɔcogo ladilan. Dual-phase structure weld bɛ ni crack resistance ɲuman ye. Delta fasa min bɛ welda la, o bɛ se ka sumanw nɔgɔya, ka ɔsitini kelen-kelen bɛɛ ka sirako ban, ka nɔgɔ juguw danfara dɔgɔya suman dancɛ la, wa Delta fasa bɛ se ka S ni P bɛ se ka dɔ bɔ a ni ɲɔgɔn cɛ fanga la ani ka ji jilamaw ni ɲɔgɔn cɛ filimuw labɛn.
C. Aw bɛ weld metal alloy composition ladilan. Aw bɛ dɔ fara MN, C ani N hakɛ kan cogo bɛnnen na, autenitiki nɛgɛ kelen na, ka sɔrɔ ka fɛnɲɛnamafagalanw hakɛ fitinin dɔ fara a kan i n’a fɔ cerium, pickaxe, ani tantalum (o bɛ se ka welda jɔcogo nɔgɔya ani ka suman dancɛ saniya), o bɛ se ka dɔ bɔ funteni karili hakɛ la.
D. Taabolo fɛɛrɛw. Aw bɛ jibolisira wulilen sumaya kojugu walasa ka kristalɛ kolomamugumuguw bali. Aw bɛ baara kɛ ni funteni donnafɛn misɛnninw ye ani ka jiribolo welda misɛnninw kɛ.
Misali la, 25-20 austenitic steel ka teli ka kɛ ji la. A bɛ se ka dan sigi kosɛbɛ nɔgɔ hakɛ ni a suman hakɛ la, ka fanga camanba sɔgɔli fɛɛrɛw ta, ka funteni don dɔɔnin ani ka jolidaw nɛnɛ hakɛ caya.
4. Jogindaw weldalenw minɛni .
Funteni fanga ka kan ka a lajɛ ko jolidaw ka plasitiki ka kan ka kɛ walasa ka funteni caman bɔli bali; Nɛgɛ minnu funteni ka dɔgɔn, olu ka kan ka kɛ walasa funteni dɔgɔyalen ka gɛlɛya walasa ka jolidaw ka kari ka bɔ funteni dɔgɔman na.
5. welding distortion belebele .
K’a sababu kɛ funteni jiginni dɔgɔyali ye ani bonya coefficient belebele, welding deformation ka bon, ani clamps bɛ se ka kɛ ka deformation bali.
Ni gɛlɛya kofɔlenw fana bɛ aw la, aw bɛ se ka o ko in sɛgɛsɛgɛ ni pipe welding kɛcogo kɔlɔsili ye. O kɔfɛ, aw bɛ fɛɛrɛw tigɛ minnu bɛ bɛn o ma walasa ka gɛlɛya in ɲɛnabɔ ka kɛɲɛ ni ko bɛnnen ye. Ka fara fɛn yɛrɛ kɔnɔfɛnw kan, mɔli, jirisunw tilatilali, welding current, ani welding pipe unit welding teliya bɛna nɔ dɔ bila pipe weldalen jogo la. as a . Professional Manufacturer of Industrial Welded Pipe Production Equipment , Aw ni ce ka kumaɲɔgɔnya kɛ ni Hangao tech . gɛlɛyaw ye aw bɛ minnu sɔrɔ austenitic welded pipes dilanni na, ani ka ɲɛtaa makɔnɔ ni aw ye.
