ASTM A312 nɛgɛ tiyo

ASTM A312 be nɛgɛdaga nɛgɛdaga min tɛ nɛgɛdaga ye, min be sɔgɔ, ani min be baara kɛ ni nɛnɛba ye, o datugu, min be se ka nɔgɔ bɔ ani ka funteni yɛlɛma -ka baara kɛ ni kemikali baara ye, ka fɛnw saniya, ka ji bɔ, ani ka baara kɛ ni yiriw ka baarakɛyɔrɔw ye; funtenifalenyɔrɔ/boli nɛgɛw be ben A213/A269 jukɔrɔ, saniyako yɔrɔw be ben A270 jukɔrɔ, ani u janya be tugu ASME B36.19M (Sch 5S/10S/40S/80S) kɔ; kloridi-bearing walima oxygène media kɔnɔ, bajiji-nɛnɛyɔrɔw gɛrɛfɛ, ani yɛlɛmani porozew la minw be saniyako ni baarakɛwagati bila ɲɛfɛ, A312 ka grade sugandiliw n’a sanfɛla finiw be nafa lase mɔgɔ ma kɛrɛnkɛrɛnniya la.

Sanni minw be kɛ, u fanba be sinsin denbaya fitinin dɔ lo kan minw be ni grade ye. Tagamasiɲɛ fila-i n’a fɔ304/304Lwalima316/316La be soudure nɔgɔya HAZ gɛrɛfɛ k’a sɔrɔ a be fanga laɲiniw mara stock line kelen kɔnɔ.

Tablo 1 - A312 ka jatedenw ani baarakɛcogo ɲuman

* A sɔrɔcogo n’a sɔrɔko be dan na ka kɛɲɛ ni maraw ni mansin sira ye.

Aw ye baara kɛ ni jateden nunu ye ka sɛgɛsɛgɛli kɛ joona; laɲini labanw ka kan ka tugu ASTM/ASME ka gafe kuraw kɔ ani sannikɛla ka sariyaw kɔ.

Tabali 2 - Simi min b’a yira (wt.%)

Tabali 3 - So kɔnɔ - funteni hakɛ min ka dɔgɔ

Dilancogo jatebɔw basiginin lo .degun minw daganin lo ani funtenika bɔ kodew la minw be se ka kɛ sanni ka bɔ so-funteni hakɛ dɔrɔn na.

Tuyo bonya be to ka tugu ɲɔgɔn kɔASME B36,19M. Sugandili5S/10S/40S/80Sporogaramuw ka kan ka bɛn ni degun, nɔgɔ hakɛ ani soudure sɔrɔyɔrɔ ye. Walisa ka boon lɔ ka ɲɛ, poroze caaman be yɔrɔw sugandi minw janya be se ka tigɛ -ka se ka foro kɔnɔ sɔgɔli dɔgɔya. Labɛn laban be bɛn ni ɲɔgɔnkunbɛn ye: tigɛli nɔgɔman wala kaare-ka baara kɛ ni yɔrɔw ye, min be tigɛ ka kɛ yɔrɔw ye. Ni orbital soudure walima critique leak sɛgɛsɛgɛli labɛnna, OD ni kogow muɲuli gɛlɛnw be dɛmɛ don ka fit-up jɛnsɛnni dɔgɔya. O yɔrɔw be se ka kɛ pickle/passivé wala .manamana-minɛnin (BA); poroze minw ka saniyako ka gwɛlɛ wala minw ka gɛrɛntɛ ka dɔgɔ ID kan, u ka kan ka bancogo ni sɔnni hakɛ fila bɛɛ yira.

O sira fila bɛɛ ye A312 ta ye ani u be se ka kɛ cogo kelen na baara la ni funteni furakɛli ni NDE kofɔra ka ɲɛ. Soudure (ERW/EFW) be setigiya ni wariko ɲuman di NPS belebelew ni boli janw na, n’a y’a sɔrɔ nɛgɛw be fura dafalen-annealed ani passive. Tuma caaman na, yɔrɔ minw na degun be yɛlɛma, yɔrɔ minw ka gwɛlɛ, wala yɔrɔ minw ka gwɛlɛ ani u be fanga wɛrɛ ɲini, o lo ka di mɔgɔw ye. O kunnafonisɛbɛn ka kan k’a yira sira juman lo be sɔn a ma ani sɛgɛsɛgɛri juman lo b’a yira ko baara min laɲinina, o be bɛn n’o ye.

A312 ka sisitɛmu minw be ɲɛtaga sɔrɔ, u be daminɛ butiki kɔnɔ sanni ka baara kɛ. Ostenitiki nɛgɛdaga ka kan ka bɔ baara la furakisɛ dafanin kɔnɔ-min be nɛnɛ joona ani min be suma joona joona o la, kromu karibidiw be yɛlɛma tugun ani ositinitiki matirikisi kelen be segi ka kɛ. Yɔrɔ minw na u be baara kɛ ni tiyo sɔgɔnin ye, u be nɛgɛw ladon furakisɛ kelen na-annealed cogoya la; yɔrɔ dɔw wala yɔrɔ dɔw la, u be jigi tigɛ sabu u be mikrostrukturu ɲagamininw to yen ani u be nɔgɔ jaabi cogo kelen na.

Surface integrité be mara i n’a fɔ tugutugu ɲɔgɔn kɔ: dilan, saniya, pasivasiyɔn ani sɛgɛsɛgɛri. Funteni ɲɛgɛn, nɛgɛ min be don a kɔnɔ ani kuloride tɔw lo be se ka kɛ sababu ye ka yɔrɔw nɔgɔ joona. Ni ɲɛgɛn dɔ tora sɔgɔli kɔ, a bɔ a la ni masin ye ani o kɔ, a ka filimu pasifiki labɛn kokura ni furakɛli ye i n’a fɔ a ɲɛfɔra cogo min na poroze ka sɛbɛw kɔnɔ (a tigi caaman be baara kɛ ni baarakɛyɔrɔw ka kɛwalew ye i n’a fɔ ASTM A380/A967). Baara minw be ID ɲumanba ɲini wala minw ka tendensi ka dɔgɔ, u be se ka bright-annealed (BA) product ɲɛfɔ ɲɔgɔn fɛ ni sɔnni sariyaw ye ID ka ban ani ka saniya.

Weld-kɛrɛfɛ baara ka teli ka bɔ baarakɛcogo kololi la ka tɛmɛ kalanso sugandili kan. Ka baara kɛ ni L-gradi ye walima grade basiginin soudure gɛrɛfɛ, o be dɛmɛ don ka sensitizasiyɔn kɛlɛ; gazi inert saniyali ɲuman min be kɛ ID kan, o be funteni tinti ni oksidi hakɛ dɔgɔya; ani post-soudure saniyako ɲuman be yɔrɔw bali ka yɔrɔw yɛlɛma. Minɛnw ni fɛnw ka kan ka kɛ nɛgɛw ye minw tɛ nɔgɔ ye-dɔrɔn-karibɔni-nɛgɛ burɔsiw, sɔgɔlanw, walima buguri min be sɔgɔ, o be se ka nɛgɛ gwansan don min be nɔgɔ bɔ kɔfɛ ani ka filimu min tɛ baara kɛ, o tiɲɛ.

Sanuya ni fɛɛnw marali be nɛgɛrifɛnw datugu. ID be ko cogo min na, k’a ja ani k’a latanga cogo min na, a labanw be don cogo min na ani u be nɛgɛw siri cogo min na walisa ka kuloridi ta ani fɛnɲɛnamaw donyɔrɔ kɔlɔsi marali ni ci wagati la, o ɲɛfɔ. Dalilu nafaman minw labɛnna ka ɲɛsin dili ma, olu ye funteni-furakɛli sɛbɛnw, pasivasiyɔn sɛbɛnw, ID saniyako jaabiw, ani n’a fɔra, gɛlɛya walima nɛgɛ-nɔgɔ sɛgɛsɛgɛliw. Ni o kɔrɔsili sɛbɛra kunnafonisɛbɛn kɔnɔ ani n’u kɛra tuma o tuma, A312 lɔgɔw minw be sɔgɔ ani u tɛ sɔgɔ, olu be koow kɛ cogo kelen na foro kɔnɔ ani u be to k’u ka nɔgɔw kɛlɛ wagatijan kɔnɔ.

Sanni i ka marifaw sɛgɛsɛgɛ, miiri daliluw lo la. Fɛɛn kelen b’a yira ko degun tilennin lo (sɛgɛsɛgɛri min be kɛ ni ji ye wala min tɛ tiɲɛni kɛ kuran la A312 kelen kelen bɛɛ la). Dɔ wɛrɛ be kogo ni ID ka taga ɲɛ (eddy-current wala UT ka tɛmɛ 100% janya kan sisitɛmu kɔrɔmanw kama). Yɔrɔ minw na farati be yen ka mɔgɔw sɔgɔsɔgɔ, u be sɔgɔsɔgɔninjɛ fɛɛrɛ dɔ fara a kan (ASTM A262). PMI be sɛgɛsɛgɛri kɛ nɛgɛkunbɛnnanw ka danbe kan. Sɛbɛnw lajɛnnin be MTC ka sɛgɛsɛgɛli di ka bɔ funteni na ka taga a bila nɛgɛjuru la, ni sɔnni sariyaw ye ani rapɔɔri dicogo minw bɛnna ITP kɔnɔ. Ni a tigi y’a ɲini, mɔgɔ sabanan-seereya (misali la,BV, SGS) be se ka labɛn.

Tabali 4 - Kunnafoni sɛbɛn yɔrɔw ani sɛbɛnw

Poroze minw lɔra 1990 lamini na.ASTM A312 nɛgɛ gwansan, Octal tiyo304/304L, 316/316L, 321/321H, 347/347H ani fɛn kɛrɛnkɛrɛnninw sugandininw be ni furakisɛw ye minw be se ka yɛlɛma, ka fɛnw yɛlɛma/ka tigɛ, ka tigɛ -ka taga -janya baara la ani ka sɛbɛw labɛn ka kɛɲɛ ni poroze ITP ye. Sɛgɛsɛgɛli min be kɛ yɛrɛmahɔrɔnya la, o be se ka labɛn ni mɔgɔ y’a ɲini.

Ɲiningali fɔlɔ: ASTM A312 (ASME SA312) nɛgɛdaga be baara kɛ ni mun lo ye?
A1:O ye austenitic nɛgɛ tiyo ye min be kɛ ka baara kɛ ni tiyo ye min be se ka nɔgɔya ani min be se ka nɔgɔ bɔ.

Ɲiningali 2nan: Ne be se ka TP304/304L ni TP316/316L sugandi cogo di ASTM A312 ka tiyo kama?
A2:304/304L sugandi ka ɲɛsin nɔgɔw bɛɛ ma; 316/316L sugandi ka se ka yɔrɔ/yɔrɔw kɛlɛ ka ɲɛ kuloridiw kɔnɔ.

Ɲiningali 3nan: Ne ka kan ka mun lo ɲini walisa ka ASTM A312 ka tiyo ɲuman sɛgɛsɛgɛ sanni n’ ka san?
A3:MTC/traceability, hydrotest walima NDE sɛgɛsɛgɛli jaabiw ɲini, PMI, ani sɛgɛsɛgɛli kɛrɛnkɛrɛnnin sifa o sifa (misali la, ASTM A262) ka fara sɛgɛsɛgɛliw kan minw be kɛ ni dimensiyɔn/fini ye.

Aw ka ɲɔgɔn sɔrɔ sisan

Sɛrɛkiliw

 

CE ka sɛbɛ

ISO 9001 ka sɛbɛ

API Q1 sɛbɛ

ABS sɛbɛ

AP-5L sɛbɛ

API-5CT ka sɛbɛ