ASTM A335 P11 Nɛgɛkuru min tɛ yɛlɛma, o be baara kɛ ni funteni hakɛ ye

ASTM A335 ka sɛrɛkili P11 be sɔrɔ .a ka nɛgɛkunbɛnnan Cr-Mo nɛgɛ (1–1,5% Cr, 0,5% Mo)min dilanna kɛrɛnkɛrɛnnin na ka baara kɛ n’a ye .funteniba - ani fangaba - funteni sisitɛmu.A be balansi yira mekaniki fanga, oksidi fanga, ani a dilanni yɛlɛmani-}ideal cɛ i n’a fɔ fɛn minw be se ka yɛlɛma, minw be kɛ ni fanga ye ani minw be yɛlɛma . Ka bɔ nɛgɛ ka miiriya la, .feritiki–min be se ka yɛlɛma .ka P11 be karibidiw jɛnsɛncogo ɲuman yira (M23C6 ani M6C ka ca), o min b’a ka .creep-ɲɛnamaya tigɛli ani janya basigi.
Chromium be .Oksidi hakɛ min ka ca (CrO₴)formation, min be mɔgɔ tanga sɔgɔli ni oksidi ma fɔɔ ka taga se degere 600 ma (degere 1110 F), k’a sɔrɔ molibdɛni be feriti nɛgɛw barika bonya ani ka yɛlɛmaniw sumaya.
O fɛn minw be ɲɔgɔn minɛ, u bɛɛ be:

• Long- kumadenka yɛlɛma yɛlɛmadoni ni funteni barikaman jukɔrɔ.
• Okisidi labɛnnin basiginin min be yɔrɔ latanga ani nɔgɔ jogo min be se ka fɔ ka bila.
• Fisamansoudureani a ka se ka yɛlɛma dɔɔni dɔɔni ka sɔrɔ ka yɛlɛma yɛlɛma.
• Karibɔni hakɛ min be kɔlɔsi min be fanga mara ani ka sumanw nɔgɔya bali.

O nɛgɛ basiginin kosɔn, ASTM A335 P11 bele ye fɛɛn dɔ ye min be fɔ ka caya .nɛgɛdagaw, kalayalanw, ani baarakɛcogo tuyowfanga sɔrɔli la ani baara ɲuman na.

Masiniko minw ka ɲi ka kɛ
Tensile ka bon walima a ka kan ni 415 MPa ye • Yield ka ca walima a ka kan ni 205 MPa ye • Elongation ka bon walima a ka kan ni 30 % ye • Hardness ka dɔgɔ walima a ka kan ni 163 HBW ye

ASTM A335 P11 tiyow be bɔ .yɔrɔ gwansan bɔli walima ja nɛnɛman, ka mikorostructure kelen labɛn ani ka yɔrɔ tigitigiw kɔlɔsi.
O dilan cogo kelen kelen bɛɛ be kɔlɔsi koɲuman walisa nɛgɛw ka to ka kɛ kelen ye ani ka kɔnɔna fiɲɛw dɔgɔya.

Dilanni ani baara tuguɲɔgɔnna

Billet Heating & Percing– Bilɛti minw be kɛ ni nɛgɛ ye, u be kalaya fɔɔ ka se degere 1100–1150 ma ani u be sɔgɔ ni yɛlɛmani fɛɛrɛw ye walisa ka kɛ fɛn dɔ ye min be ni yɔrɔ dɔ ye min kɔnɔ sumanw be bɔ ka kɛ kelen ye.

Ka ban walima ka nɛnɛ– Tuyow be yɛlɛma wala u be sama ka se kogo laban ma, o kɔ, fiɲɛ be nɛnɛ wala ka normalizasiyɔn kɛ cɛmancɛ la.

A ka ɲi ka kɛ cogo min na (degere 940–980 )– A be feriti kisɛw saniya, ka karibidiw danfaraninw yɛlɛma, ani ka fanga kelennya fisaya.

A be yɛlɛma (degere 675–755 )– A be kɔnɔnakow nɔgɔya, ka ductilité lasegin, ani ka karibidi cogoya basigi walisa ka se ka yɛlɛmayɛlɛma.

Sɛgɛsɛgɛli ni kɔrɔbɔli– NDT min be kɛ ni ultrasonique wala eddy{0}}current ye, hydrostatique depression sɛgɛsɛgɛliw, gɛlɛya sɛgɛsɛgɛli ani dimensiyɔnw sumani be sɔrɔ a la.

Nin funteni furakɛli min be kɛ ni yɔrɔ fila ye, o be .feriti ɲuman-kisɛ -karibidi matirisimin be fanga kɛlɛ ani ka mekaniki fanga mara wagatijan kɔnɔ baara wagati la.
Ka ɲɛsin yɔrɔw ma, pɔsi-wuluw ka funteni furakɛli (PWHT) b’a to .mikorostrukturu labɛnni ani idɔrɔzɛni degun nɔgɔyali, a kɔrɔtanin lo ka se ka baara kɛ ka ɲɛ-tempitiri baarakɛcogo ɲuman.

A be sɔrɔ .gwansan, fɛn minw be yɛlɛma, wala minw be juru la .ka kɛɲɛ ni sigiyɔrɔ sariyaw ye.

Ni baarakɛyɔrɔ funteni be surunyana .degere 600, ASTM A335 P11 b’a yira ko .oksidi fanga, funteni basiginin, ani mekaniki marali ..
Okisidi yɔrɔ min be to ka kɛ ni kɔrɔmu- ye, o be nɔgɔ ni nɛgɛ bɔnɛ dɔgɔya wagatijan kɔnɔ, k’a sɔrɔ molibdɛni be dɛmɛ don ka .yɛlɛmayɛlɛma fanga marali ani mikrovoyidi ɲɔgɔndan kɛlɛli.

O nɛgɛ be baara kɛ koɲuman yɔrɔ minw na, n’u be .funteni yɛlɛmani, funteni yɛlɛmani ani degun yɛlɛmani, ka fanga ni tilenninya fila bɛɛ mara.

Baarakɛcogo nafaw

• Creep fanga marali:Lanaya be se ka yɛlɛma ani ka tigɛ lɛrɛ waa caaman kɔnɔ baara la.
• Sɛgɛsɛgɛri min be kɛ ni funteni ye:Fine- mikorostructure be dɔ bɔ farali la ka bɔ yiriwali-contraction cycles la.
• Funteni bonya min ka dɔgɔ:Dimensiyɔn basigili be soudure ka ɲɔgɔndan mara piping system gɛlɛmanw na.
• Kɔgɔjida latanga:Filimu basiginin min be se ka kɛ, o b’a to mɔgɔw be se ka nɔgɔ bɔ ani ka sɛgɛsɛgɛri kɛ wagati jan kɔnɔ.

Aplikasiyɔnw

• Fanga bonya:Bolier tubes, superchauffage bobines, rechauffage kuunw.
• Rafinɛriw ani petoroli baarakɛyɔrɔw:O la, a be se ka kɛ ko mɔgɔw be ɲɔgɔn minɛ ani k’u yɛlɛma.
• Liziniw ka baarakɛyɔrɔw:Sagaw be yɛlɛma ani u ka bon-pressure feedware sisitɛmu.
• Degun minanw:Ka ɲɛsin baara jan ma- kɔrɔ ma funteni ni degun yɛlɛmani kɔrɔ.

P11 ka tiyow bɛɛ be sɛgɛsɛgɛ ani k’u sɛbɛ ka kɛɲɛ ni .ASTM A335/A999niASME SA335 sariyaw.
O dili kelen kelen bɛɛ be taga ni .Mansin kɔrɔbɔli sɛbɛnw (AN 10204 3.1 / 3.2), k’a to mɔgɔw be se ka sɛgɛsɛgɛri kɛ ani ka sariyaw labato.

Kɔrɔbɔli sariyaw ye:

• Sɛgɛsɛgɛri minw be kɛ ka kogow ka mankan sɛgɛsɛgɛ wala k’u jigi.
• Tesili, gɛlɛya, pɛtɛli ani yɛlɛmani sɛgɛsɛgɛli.
• Radiyogarafi walima sɛgɛsɛgɛli min be kɛ ka kɛɲɛ ni poroze ka ɲɛfɔli ye.

Octal Pipe be .QA/QC dɛmɛ dafanin ., sɛbɛw be sɔrɔ .soding kɛcogo (WPS/PQR), ani jamana wɛrɛw ka minanw be se ka kɛ sababu ye ka EPC ni kuran porozew lase mɔgɔw ma duniɲa kuru bɛɛ kɔnɔ.

Aw ka ɲɔgɔnye kɛ sisan

FAQ

 

 

Q1: ASTM A335 P22 (ASME SA335 P22) tiyo ye mun ye?

A1:High-tempature, a ka bon-}pressure baarakɛcogo pipɛriw la, sɛnɛfɛnw, ani petɔrɔsimiki yɔrɔw la.

Ɲiningali 2nan: "2.25Cr-1Mo" kɔrɔ ye mun ye P22 kɔrɔmu moli tuyo la?

A2:A be kuma alloy dilan cogo la (2,25% Cr + 1% Mo) min be yɛlɛma ani oksidi fanga fisaya funteni sanfɛ.

Ɲiningali 3: Furancɛ furakɛli juman lo ka ɲi ka kɛ ASTM A335 P22 ka tiyo min tɛ nɛgɛ ye?

A3:Normalizasiyɔn ani yɛlɛmani (N+T) ni funteni-furakɛli sɛbɛnw ye.

Ɲiningali 4nan: Tuma juman lo n’ ka ɲi ka P22 sugandi P11 wala P91 nɔɔ na?

A4:P22 sugandi i n’a fɔ cɛmancɛ-grade min ka baara ka bon ni P11 ye, k’a sɔrɔ i b’i yɛrɛ tanga kɔlɔsili gɛlɛnw ma ani sɔngɔ gɛlɛnw ma minw ka teli ka kɛ ni P91 ye.

Q5: N’ ka ɲi ka mun lo ɲini walisa ka P22 ka pɔɔti sɛgɛsɛgɛ ka sɔrɔ ka san?

A5:EN 10204 3.1/3.2 MTC ni funteni sɛgɛsɛgɛli, mekaniki/simi jaabiw, gɛlɛya, ani UT sɛgɛsɛgɛli i n’a fɔ a fɔra cogo min na.

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