ASTM A335 P9 Alloy Karfe bututu

ASTM A335 P9 bututun ƙarfe ne mara nauyi wanda aka tsara donci gaba da sabis a matsanancin zafin jiki da matsa lamba. Game da9% chromium da 1% molybdenum, Yana zaune a cikin gidan 9Cr-1Mo wanda aka yi amfani da shi sosai a cikin samar da wutar lantarki, masu zafi na petrochemical, masu gyarawa, da kuma layin tsari mai zafi.

AOctal Pipe, Ana ba da bututun P9 a cikiyanayin al'ada da yanayin zafi, cikakken gwadawa, kuma ana iya ganowa zuwa zafi/batch, dacewa da tukunyar jirgi, headers, superheaters, layukan tururi da manyan bututun sarrafa zafin jiki mai tsayi inda karfen carbon carbon da ƙananan{1}Cr gami ba zai iya kula da oxidation ko juriya ba.

Ba kamar karfen carbon na yau da kullun ba, an tsara P9 don kiyaye ƙarfi da amincin saman bayandubban hoursa high karfe zafin jiki.

• Chromium (~ 9%)Yana samar da m, madaidaiciCr₂O₃ fima saman, raguwar sikeli da oxidation a cikin tururi mai zafi ko gauraye - yanayin gas.
• Molybdenum (~ 1%)yana ƙarfafa matrix na ferritic kuma yana jinkirta nakasawa ta hanyar hana motsin ɓarna.
• Bayannormalizing + fushi, Karfe ya nuna aferrite-carbide tsarintare da tsayayyen iyakoki na hatsi da kuma sarrafa carbide (musamman M₂₃C₆ / M₆C) tare da iyakoki - wannan shine abin da ke kiyaye ƙarfi{1}} karyewa kuma yana guje wa ɓarna iyakokin hatsi yayin dogon fallasa.

Don haka, a cikin sabis ɗin zafi mai girma{0} (maɗaukakin zafi, layukan canja wuri), P9 yana tsayawa tsayin daka fiye da nau'in nau'in P5/P11.

Haɗin Sinadari (na al'ada)

Kayayyakin Injini (ASTM A335 P9)

• Ƙarfin juzu'i:Mafi girma ko daidai da 415 MPa
• Ƙarfin haɓakawa:Mafi girma ko daidai da 205 MPa
• Tsawaitawa:Yafi ko daidaita 30%
• Tauri:Kasa da ko daidai da 163 HBW

Waɗannan dabi'u don daidaitaccen yanayin isar da zafi ne{0}} da{1} kuma an yi niyya ne don ba da isashen gaɗaɗɗen gaɓoɓin matsi da ƙirar zafin jiki.

Don tabbatar da cewa 9Cr{2}}1Mo chemistry a zahiri ya juya zuwa mafi girman da ake buƙata{3}}ananan yanayin zafi, Octal Pipe yana ɗaukar hanyar bututu mai sarrafawa:

• Billet & huda

Tsabtace Cr{0}Mo billets ana dumama zuwa daidaitaccen zafin huda (kimanin digiri 1100-1150), sannan a huda su don samar da ramuka tare da kwararar hatsi iri ɗaya.

• Zane mai zafi / sanyi

An kawo kaurin bango zuwa jadawalin da aka ba da umarni (SCH 10 - SCH 160). Ana iya amfani da daidaitawa tsaka-tsaki lokacin da aka sami raguwa mai nauyi ko kusanci.

• Daidaitawa (kimanin . 900-950 digiri)

Yana sake gyara ferrite, yana narkar da waɗanda ba -uniform carbides, yana kawar da damuwa na ciki daga samuwa.

• Zazzabi (kimanin . 675-760 digiri)

Yana maido da ductility da makullai a cikin rarrabawar carbide da ake so domin kaddarorin ɓarke ​​​​ya dace da buƙatun ASTM.

• Kula da inganci

1. Ultrasonic / eddy{0}} NDT na yanzu akan bututun jiki da ƙarewa
2. Gwajin Hydrostatic
3. Tauri da samfurin injina kowane tsari
4. Takaddar EN 10204 3.1/3.2 don ganowa

Sakamakon shi ne bututu mai kyau, daidai gwargwado da carbides da kuma tsayayyen matrix ferritic matrix - tsarin da kuke so na dogon lokaci{1} sabis mai zafi.

Za'a iya tattauna tsayi na musamman da tsayin daka don ayyukan tukunyar jirgi/HRSG.

Lokacin da zafin ƙarfe ya tashi zuwa600-700 digiri, P9 yana adana abubuwa biyu waɗanda ƙananan maki fara rasa:

• Mutuncin saman- Fim ɗin Cr{0} oxide mai arziƙi yana rage saurin girma kuma yana rage ɗigon oxide, don haka ɓata bututu da ɓarkewar bango suna a hankali.
• Kwanciyar kwanciyar hankali– tare da Mo a cikin bayani da kuma sarrafa carbides, da gami iya isa creep rupture ƙarfi a kan oda da ake bukata domin 10⁴ h sabis a kusa da 600 digiri.

Shi ya sa ake kayyade P9 akai-akai don:

• Tushen wutar lantarki:superheater da reheater tubes, tururi headers, zafi main tururi Lines
• Masu dumama matatun mai / petrochemical:bututun gyara, layukan canja wuri, bututun gas mai zafi{0}
• Tsire-tsire masu zafi mai girma-:masu musayar zafi, manifolds, layukan ciyarwar reactor
• Rukunin thermal Oil & Gas:allurar tururi, hydrogen{0}Layukan sarrafawa da ke aiki ƙarƙashin yanayin zafi da hawan keke

Idan aka kwatanta da P5/P11, P9 yana bayarwamafi kyawun sarrafa iskar shaka da kuma sannu a hankali coarsening microstructural, wanda sau da yawa ke fassara zuwa tsawon lokacin dubawa.

• Production zuwaASTM A335 / ASME SA-335da kuma alaƙa da buƙatun ISO/EN
• Bayarwa a cikial'ada da kuma fushiyanayi
• Mechanical, NDT, hydrostaticgwajin rahotanni ga kowane rukuni
• 3.1 / 3.2 takaddun shaidasamuwa
• Shirye-shiryen da suka dace don fitarwa da jigilar nisa{0}
• Taimakon aikin{0}matakin QA/QC don wutar lantarki, matatun mai da ƴan kwangilar shuka sinadarai

FAQ

 

 

Q1: Menene ASTM A335 P9 (ASME SA335 P9) bututu da ake amfani dashi?

A1:chrome maras ƙarfi{0}}moly alloy pipe don tsayi{1}}zazzabi, sabis mai ƙarfi{2} a cikin wutar lantarki da tsarin sinadarai na petrochemical.

Q2: Menene ma'anar "9Cr-1Mo" ga bututu P9?

A2:Yana nufin ƙirar gami da babban chromium da molybdenum don juriya da iskar oxygen da ƙarfin zafi mai ƙarfi{0}.

Q3: Ta yaya P9 ya bambanta da P22 ko P91?

A3:P9 darajar 9Cr-1Mo ce; P22 shine 2.25Cr-1Mo, yayin da P91 shine ingantaccen darajar 9Cr-1Mo tare da tsauraran matakan ƙarfe.

Q4: Wane yanayin zafi{1}}wani yanayin magani ne aka kayyade don bututun A335 P9?

A4:Yanayin zafi mai sarrafawa - (wanda aka saba da shi da zafin rai) tare da rubutattun bayanai kamar yadda oda/tallafi ya buƙata.

Q5: Menene zan nema don tabbatar da ingancin bututu P9 kafin siyan?

A5:3.1 MTC tare da yanayin zafi, sunadarai / sakamakon injina, da NDE/hydrotest da ake buƙata ta ƙayyadaddun aikin.

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