ASTM A213 T9 Alloy Karfe Tubing

Bankunan zafi mai zafi, da'irori na reheater, sassan convection na HRSG da bututun na'ura mai dumama fuskar bututu{0}}ƙarfe zafin jiki da lodin iskar oxygen da ke mamaye ƙasan ƙasa{1}Cr alloys. ASTM A213 T9 yana ba da ƙarfin zafi mafi girma da haɓakar sikelin sikelin fiye da maki 1.25-2.25Cr ba tare da ƙirƙira ƙirƙira na ƙarfe na 9Cr-V-Nb ba, wanda ya sa ya zama zaɓi mai amfani inda dogon sa'o'i, gradients thermal da amincin coil ke mamaye haɗari.

ASTM A213/SA213 yana ma'anar alloy{2}}karfebututuga masu zafi da masu musayar zafi. Ayyuka suna ƙayyadad da diamita na waje, ƙaramin bango da yanke tsayi kai tsaye akan takaddar bayanan maimakon jadawalin bututun. Madaidaici da ovality yawanci ana matsa su don dacewa da bututu{2}} don dacewa da bututu; Ana ba da ƙarewa a fili ko murabba'i{4}} don walƙiya, tare da bevels kawai inda aka shirya walda na gindin filin.

Tebur 1 - A213 T9 sinadaran sinadaran (wt.%)

Tebur 2 - Mafi ƙarancin kaddarorin don dubawa

Zane yana amfani da matsi masu izini a yanayin aiki daga lambar gudanarwa.

Ana sarrafa aikin ta hanyarzafin jiki na ƙarfe, farawa-tsayawa mita da ajiyar ƙasayin aiki tare. Tare da ~ 9% Cr, oxidation yana kula da bin adokar parabolic(oxide -kauri² ≈ k·time); Matsakaicin adadin ya yi ƙasa kaɗan fiye da ƙananan karafa -Cr, wanda ke iyakance kauri da abubuwan da suka faru. Mo yana daidaita carbides, jinkirta hatsi{3}}iyaka zamewa da girma kogo don haka asarar bango daga lokaci{4}} nakasar da ta dogara da ita tana sannu a hankali.

A cikizafi, bushe sassairin su zazzafan da'irori masu zafi da bankunan ɗumbin dumama, T9 yana adana zagaye da kaurin bango fiye da zaɓuɓɓukan 1.25–2.25Cr, rage mitar retube da ƙazanta a ƙasa da ke haifar da sikelin zube. A cikin aikin HRSG tare da hawan keke akai-akai, masu wucewa ta thermal suna haɓaka damuwa na oxide kuma suna ƙaruwa spallation/"re{5}}oxidation"; daidaita rates ramp, inganta soot{6}}busa, da bin diddigitube{0}}ƙarfe zafin jiki (TMT)wuraren zafi suna rage haɗari. Abubuwan da ke tattare da sinadarai na ajiya: alkali{1}}arziki ko sulfur{2} toka mai ɗaukar nauyi na iya canza oxide da haɓaka harin gida, don haka binciken man fetur/akar haɗe da binciken borescope ana amfani da shi don tsara tsafta da tazarar dubawa.

Don creep, fa'idar T9 tana zaune a cikinyanki mai tsawo{0}: lafiyayyen hatsi mai ci gaba - cibiyar sadarwar carbide mai iyaka daga ingantaccen zafin jiki yana inganta lokacin karyewa kuma yana kiyaye nakasu iri ɗaya. Yin zafi fiye da kima ko rashin lafiya{2}sakamakon sake zafafawa yana toshe hatsi kuma yana spheroidizes carbides, yana haifar da kumburi da wuri, ovality ko leaks. A aikace, trendingoxide kauri / samun nauyitare da tarihin TMT yana ba da tushen shaida don tsara jadawalin dubawa.

Tebur 3 - Siginar filin vs. Amsar injiniya

Tebur 4 - Ambulan na al'ada

Yanayin saman yakan yanke shawarar rayuwa a cikin aiki mai zafi. Madaidaicin madaidaicin sarrafawa shine:de-ma'auni → tsabta → bushe → hula → wrap → tabbatarwa. Bayan ƙirƙirar, cire tint zafi da ragowar sikelin daga ID/OD; ja ruwa tare da tsaftataccen kafofin watsa labarai, sannan a bushe ID ɗin zuwa ga maƙasudin da aka rubuta (misali, raɓa a ƙasan yanayi ta wata ƙayyadadden gefe). Fitm iyakokida yin amfani da abin rufe fuska wanda ke ƙin ƙura da danshi; kantin sayar da dauri daga ƙasa tare da magudanar ruwa da kariya ta UV.

Karɓa yana cikin ITP don haka QA zai iya shiga ba tare da muhawara ba. Ƙayyade ma'anar "tsabta" (ajin gani, iyakar chloride/man idan an zartar), yadda ake duba bushewa, da kuma abin da ake buƙatar marufi don yanayin ajiya. A kiyaye kayan aikin carbon -karfe nesa da bututun T9 don hana shigar ƙarfe kyauta-; inda ba za a iya kaucewa gauraye kantuna ba, gudanar da rubutu{5}} tsaftaferroxyl rajistan shigaa kan samfurori. Kafin a saki, yi rikodin hotuna da tsara bayanan adanawa tare da ID ɗin dam don haka ma'aikatan shigarwa su san cewa layin bai gurɓata a ma'adana ba.

Don ayyukan da suka shafi ASTM A213 T9,Octal Pipeyana ba da bututun da ba su dace ba, daidaita matakai da takardu tare da aikin ITP, kuma yana iya shirya shaida mai zaman kanta (misali, BV, SGS) lokacin da ake buƙata.

Q1: Menene ASTM A213 T9 (ASME SA213 T9) tubing da ake amfani dashi?
A1:9Cr - 1Mo Ferritic Alloy tubing don tukunyar jirgi, superheaters, da masu musayar zafi a cikin matsanancin zafi, sabis na matsa lamba.

Q2: Shin A213 T9 yayi daidai da A335 P9?
A2:Ana ɗaukar su da yawa a matsayin daidai ta hanyar chemistry/UNS (T{0}} tubing spec, P9=pipe spec), amma yakamata ku dace da ma'aunin aikin da ake buƙata da iyakar gwajin.

Q3: Menene zan nema don tabbatar da ingancin bututun ASTM A213 T9 kafin siyan?
A3:3.1 MTC tare da lambar zafi + yanayin kula da zafi, sunadarai / sakamakon injina, hydrotest ko NDE (kamar yadda aka ƙayyade), ƙididdigar ƙira, da cikakken alama / ganowa.

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