ASTM A335 P11 Bututun Karfe Ba Tare da Sumul ba don Babban -Sabis na Zazzabi - BLOG

Bayanin Kayan Aiki

ASTM A335 Grade P11 nasa nelow alloy Cr{0}}Mo karfe iyali (1-1.5% Cr, 0.5% Mo)injiniyoyi na musamman don amfani a cikihigh -zazzabi da kuma matsa lamba tsarin tururi.Yana wakiltar ma'auni tsakanin ƙarfin injina, juriya na iskar oxygen, da sassauƙar ƙirƙira{1} madaidaici don abubuwan da aka haɗa kamar coils superheater, matsi da kai, da layin canja wurin tururi. Daga mahangar ƙarfe, daferritic-haushi microstructurena P11 yana da kyakkyawan tarwatsawar carbide (mafi yawa M₂₃C₆ da M₆C), wanda ke haɓaka ta musamman.rarrafe{0}}ratse rayuwa da kwanciyar hankali.
Chromium yana inganta aMa'aunin oxide mai yawa (Cr₂O₃)samuwar, kariya daga sikelin da iskar shaka har zuwa digiri 600 (digiri 1110 F), yayin da molybdenum yana ƙarfafa lattice na ferrite kuma yana jinkirin raguwa.
Tare, waɗannan abubuwan haɗin gwiwar suna ba da:

Dogon lokaci{0}juriya mai ban tsorokarkashin dorewa lodi da zafin jiki.
Samuwar oxide mai ƙarfi yana tabbatar da kariyar ƙasa da halayen lalata da ake iya faɗi.
Madallaweldabilityda kuma rashin lahani ga embrittlement bayan hawan keke na thermal.
Matakan carbon da aka sarrafa wanda ke kula da tauri kuma yana hana ƙwayar hatsi.

Saboda wannan kwanciyar hankali na ƙarfe, ASTM A335 P11 ya kasance ɗaya daga cikin mafi yawan ƙayyadaddun kayan donbututun tukunyar jirgi, superheaters, da sarrafa bututuwajen samar da wutar lantarki da aikin matatar mai.

Abubuwan Sinadarai da Makanikai

Abun ciki	% Rage	Aiki na Farko
Carbon (C)	0.05 – 0.15	Yana ƙara ƙarfi da juriya mai rarrafe
Manganese (Mn)	0.30 – 0.60	Yana haɓaka aiki mai zafi da ductility
Silicon (Si)	0.50 – 1.00	Yana haɓaka juriya oxidation
Phosphorus (P)	Kasa da ko daidai da 0.025	Sarrafa brittleness
Sulfur (S)	Kasa da ko daidai da 0.025	Aids inji
Chromium (Cr)	1.00 – 1.50	Forms m oxide fim
Molybdenum (Mo)	0.44 – 0.65	Yana haɓaka ƙarfin zafi mai girma{0}

Bukatun Injini
Tensile>=415 MPa • Yield>=205 MPa • Elongation>=30 % • Hardness<=163 HBW

Masana'antu & Maganin Zafi

Ana samar da bututun ASTM A335 P11zafi extrusion ko sanyi zane, tabbatar da kamanni microstructure da daidaitaccen iko.
Kowane mataki na tsarin masana'antu ana sa ido sosai don kiyaye daidaiton ƙarfe da rage lahani na ciki.

Jerin Samfura & Sarrafa

Dumama Billet & Huda– Alloy Billlets Ana mai zafi zuwa digiri 1100-1150 kuma an soke su ta hanyar amfani da hanyoyin juyawa don samar da harsashi mara kyau tare da kwararar hatsi iri ɗaya.

Gama Zafi Ko Sanyi– Ana birgima ko jan bututu zuwa kaurin bangon ƙarshe, sannan sanyaya iska ko daidaita tsaka-tsaki.

Daidaitawa (digiri 940-980)- Yana tsaftace hatsi mai laushi, yana narkar da rarrabuwar carbide, kuma yana inganta daidaiton ƙarfi.

Zazzabi (digiri 675-755)- Yana kawar da damuwa na ciki, yana dawo da ductility, kuma yana daidaita ilimin halittar carbide don juriya mai raɗaɗi.

Dubawa & Gwaji- Ya haɗa da ultrasonic ko eddy{0} NDT na yanzu, gwaje-gwajen matsa lamba na hydrostatic, tabbatarwa taurin, da auna ma'auni.

Wannan maganin zafi sau biyu{0} yana samar da alafiya -ferrite mai hatsi{1}}carbide matrixwanda ke ƙin ɓarna kuma yana kiyaye ƙarfin injina yayin sabis na dogon lokaci{{0}.
Don tsarin welded, post{0}}maganin zafin walda (PWHT) yana tabbatarwamicrostructural maidowa da hydrogen danniya taimako, Mahimmanci don amintaccen aiki mai girma{0}zazzabi.

Girman Rage

Siga	Na Musamman Range
Waje Diamita	12.7 - 610 mm (½ - 24 in)
Kaurin bango	1.2-100 mm
Tsawon	Har zuwa 12 m (SRL / DRL / yanke tsayi)
Haƙuri OD	± 1 %
Hakuri WT	± 10 %
Madaidaici	Kasa da ko daidai da 0.8 mm/m

Akwai a cikia fili, beveled, ko zare iyakarbisa ga kafuwa bukatun.

Babban -Ayyukan Zazzabi & Aikace-aikace

A yanayin zafi na aiki yana gabatowa600 digiri, ASTM A335 P11 yana nuna ma'auni na musamman tsakaninjuriya na iskar oxygen, kwanciyar hankali na thermal, da riƙewar injina.
Samar da ci gaba da chromium oxide Layer - yana rage girman sikeli da asarar ƙarfe yayin ɗaukar dogon lokaci, yayin da molybdenum ke ba da gudummawa gariƙe ƙarfi mai rarrafe da juriya ga haɗin gwiwar microvoid.

Wannan gami yana aiki na musamman da kyau a cikin mahallin da ke ƙarƙashinsahawan keke na thermal, tururi oxidation, da kuma hawan jini, kiyaye duka tauri da weld mutunci.

Amfanin Ayyuka

Riƙe Ƙarfin Ƙarfi:Dogara mai juriya da tsagawa akan dubban sa'o'in sabis.
Juriya ga gajiyawar thermal:Kyakkyawan{0}}aramin tsarin hatsi yana rage tsagewa daga faɗaɗawa{1}} hawan gwal.
Ƙarƙashin Ƙarfafa Ƙwararru:Kwanciyar hankali yana kiyaye daidaitawar walda a cikin hadadden tsarin bututu.
Kariyar Sama:Stable oxide fim yana tabbatar da ƙarancin lalata da tsawaita lokacin dubawa.

Aikace-aikace

Ƙarfin Ƙarfi:Bututun tukunyar jirgi, naɗaɗɗen zafi mai zafi, masu buga kai.
Matatun Mai & Tsirrai Na Kemikal:Tsari da canja wurin bututu, tubes masu gyara.
Layin Tsarin Masana'antu:Hanyoyi daban-daban da tsarin ruwa mai ƙarfi{0}.
Ruwan Matsi:Domin dogon{0}} sabis na lokaci a ƙarƙashin zafin jiki da hawan keke na damuwa.

Dubawa, Takaddun shaida & Kawowa

Dukkanin bututun P11 an gwada su kuma an tabbatar dasu bisa gaASTM A335 / A999kumaASME SA335 Matsayi.
Kowane bayarwa yana tare da shiTakaddun Takaddun Gwajin Mill (EN 10204 3.1 / 3.2), tabbatar da cikakken bin diddigi da yarda.

Ka'idojin gwaji sun haɗa da:

Ultrasonic ko hydrostatic dubawa don sautin bango.
Ƙunƙarar ƙarfi, tauri, lanƙwasa, da tabbatarwa.
Radiyon zaɓi na zaɓi ko gwajin tasiri gwargwadon ƙayyadaddun aikin.

Octal Pipe yana bayar dacikakken goyon bayan QA/QC, takardun shaida doncancantar tsarin walda (WPS/PQR), da kuma dabaru na duniya don tabbatar da isar da abin dogaro ga EPC da ayyukan makamashi a duk duniya.

Tuntuɓi yanzu

FAQ

Q1: Menene ASTM A335 P22 (ASME SA335 P22) bututu da ake amfani dashi?

A1:Maɗaukakin zafin jiki, babban{1}matsi na sabis na bututun wutar lantarki, matatun mai, da na'urori na petrochemical.

Q2: Menene "2.25Cr-1Mo" ke nufi ga P22 chrome moly bututu?

A2:Yana nufin ƙirar alloy (kimanin 2.25% Cr + 1% Mo) wanda ke inganta juriya mai raɗaɗi da iskar oxygen a yanayin zafi mai tsayi.

Q3: Menene magani mai zafi da ake buƙata don ASTM A335 P22 bututu mara nauyi?

A3:Daidaita da zafin rai (N+T) tare da rubuce-rubucen zafi{1}} bayanan jiyya.

Q4: Yaushe zan zaɓi P22 maimakon P11 ko P91?

A4:Zaɓi P22 a matsayin matsakaicin{1}}maki don mafi girma{2} aikin zafin jiki fiye da P11, yayin da guje wa tsauraran matakan sarrafawa da mafi girman farashi galibi hade da P91.

Q5: Menene zan nema don tabbatar da ingancin bututu P22 kafin siyan?

A5:EN 10204 3.1/3.2 MTC tare da gano yanayin zafi, sakamakon injina/kemistri, taurin, da gwajin hydrostatic ko UT kamar yadda aka ƙayyade.