I-ASTM A213 T5 I-alloy Steel Tubing yeeBoiler kunye nezifudumezi

Ifestile yokuSebenza kunye neMisebenzi eqhelekileyo

I-ASTM A213 T5 isetyenziswa apho ityhubhu -ubushushu bentsimbi kunye nolawulo lwe-oxidation lulawula kuyilo olufutshane. Kwiibhoyili, ii-HRSG kunye nezifudumezi ezivuthayo, i-T5 ithatha ibhendi engaphezulu kwe-1.25-2.25Cr i-alloys xa ukuchasana kwesikali kunye namandla okuhamba kufuneka kuphuculwe ngaphandle kokufudukela kwintsapho ye-9Cr. Iiyure zenkonzo zinde, iqondo lobushushu liyinyani, kwaye ingqibelelo yekhoyili ibalulekile kunomhlwa omanzi.

IMetallurgy kwiPhepha elinye

I-T5 yintsimbi ye-5Cr–Mo ferritic. I-Chromium yakha ioksidi ecothayo-ekhulayo ukunqanda ukusasazeka kwesikali, ngelixa i-molybdenum izinzisa i-carbides kwaye ilibazisa ukuguquka kwe-creep. Indlela yokuvelisa ijolise ekuhambiseni i-ferritic matrix efanayo esindayo ekugotyweni nasekusebenzeni ngaphandle kwendawo-enzima okanye ngaphezulu{6}}kwimimandla ethambileyo.

I-Chemistry Snapshot

Okujoliswe kuko okungezantsi kukuhlolwa kwangethuba; ukuthenga kulandela isicatshulwa esimiselweyo esilawulayo.

Itheyibhile - Ukwakheka kwemichiza (wt.%)

Isiqalelo	T5 Uluhlu	Indima enkonzweni
C	Ngaphantsi okanye ilingana no-0.15	Amandla-i-ductility balance, inkxaso ye-creep
Mnu	0.30–0.60	Ukukhutshwa kwetyhefu, okuqinileyo{0}} ukomeleza isisombululo
Si	Ngaphantsi okanye ilingana no 0.50	Ukukhutshwa kweoksijini; ukugqithisa kunokulimaza ubunzima
P	Ngaphantsi okanye ilingana no-0.025	Ukuweldability kunye nokulawula ukuqina
S	Ngaphantsi okanye ilingana no-0.025	Okushushu-ukuphucuka kokusebenza kwi-S ephantsi
Cr	4.00–6.00	I-oxidation kunye negalelo elishushu-lamandla
Mo	0.44–0.65	Ukuxhatshazwa kwe-Creep kunye nokuzinza kwe-carbide

Imilinganiselo yePropati kuBubushushu beGumbi

Ezi minima zinceda ukulinganisa kwangaphambili; eziphezulu{0}}ezivumelekileyo zobushushu zithathwa kwikhowudi esebenzayo ngexesha loyilo.

Itheyibhile - Ubuncinci beempawu zoomatshini

Ipropati	T5 Ubuncinci
Tensile strength	≈ 415 MPa (60 ksi)
Unikeze Amandla	≈ 205 MPa (30 ksi)
Ukwandisa	≈ 20%

Inkqubo yeDimensional yeeCoils kunye neeBundles

I-ASTM A213 ilawula iityhubhu kuneshedyuli yemibhobho. Amaxwebhu edatha achaza iOD, udonga kunye nobude bokusika ukuze bulungele iivenkile zekhoyili kunye netyhubhu-uku{3}}kumsebenzi we-tubesheet.

Itheyibhile - Ifestile yedimensional eqhelekileyo

Ipharamitha	Uluhlu oluqhelekileyo	Amanqaku
Ngaphandle kwedayimitha	~12.7–101.6 mm (½–4 kwi)	I-OD enkulu ngendlela yokusila
Ubunzima bodonga	~1.2–12.7 mm	Iindonga ezinzima ngokubuza
Ubude	Ukuya kuthi ga kwi ~ 12 m	Iziqwenga ezinde zinciphisa i-welds yasendle
Iijiyometri	Ukuqina okuqinileyo / ukunyanzeliswa	Ixhasa i-bundle fit kunye nolawulo lokuvuza

Ukwenza iiWindows kunye noBushushu{0}}Ukuziphatha ngoNyango

Imbali ye-Thermal ilawula ubomi benkonzo ye-T5 ityhubhu, ngoko ke i-WPS/PQR kufuneka itshixe kwibhanti yobushushu obufanelekileyo yokufudumeza, ixesha lokufunxa, kunye nesantya sokupholisa. Iibhendi ziveliswa ngokufakwa okanye ukulawulwa okushushu okubumba kunye nobushushu obufanayo ngodonga; ubushushu obugqithisileyo okanye ixesha elide libamba iinkozo ezirhabaxa kwaye zehlise isakhono sokurhubuluza.

Emva kokugoba, iipropathi ziqinisekiswa kunokuba zicingelwe. Imephu yobulukhuni esuka kwintsimbi yomzali ngapha kwe-extrados, phakathi{1}}nodonga, kunye ne-intrados iqinisekisa ukuba ukugoba kuhlala ngaphakathi kwefestile evunyiweyo. Ukuhlolwa komgangatho -ubuhle, ukuncipha kodonga, umva, kunye nerediyasi esembindini{4}}qinisekisa ukuba ikhoyili okanye u-U{5}}ukugoba kuya kuhlala kumbhobho{6}}amaphepha kunye nenkxaso ngaphandle koxinzelelo.

Ukulungiswa okubandayo kunye nezilungiso zendawo zihlala zilondoloza. Uxinzelelo oluqokelelweyo olubandayo luyalandelelwa, kwaye lwakuba lugqithile kwiprojekthi ebangela ukuba ityhubhu ifudunyezwe kwakhona{1}}kwimvulophu efanelekileyo ukuze kubuyiselwe i-ductility kunye nokuzinzisa i-carbides. Ukufudumeza kwetotshi okungalawulekiyo kuyaphetshwa kuba kusenokwenza amabala ngaphezulu{3}}ukuvutha okanye iirimu eziqinileyo.

Unyango lobushushu lucwangciswe njengenkqubo, kungekhona i-patch. Isixhobo sinikwa ngokwesiqhelo{1}}kunye{2}}nemeko yobushushu; xa usenza amaqondo obushushu agqithise kubushushu bangaphambili-okanye xa iinkqubo zifuna{4}}ukwenza kwakhona ngokupheleleyo{5}}okuqhelekileyo{6}}kunye{7}}nobushushu (okanye umjikelo we-subcritical ekuvunyelwene ngawo) ukubuyisela iyunifomu ye-ferritic matrix phambi kwe-hydrotest kunye ne-NDE. Iitshathi zobushushu ezirekhodiweyo kumjikelo ngamnye zifakwe kwiphakheji yenguqu ukuze ikhoyili efakiweyo ilandelelwe kwimbali yayo yokwenyani ye-thermal.

ASTM A213 T5

Umphezulu weMfezeko kunye nokuCoceka

Ukulinganisa iintsalela kunye nobutyobo obuzinzisiweyo bubenza bufutshane ubomi kwaye bunciphise ubushushu-ukugqithisela ukusebenza kakuhle. I-ID ecocekileyo, eyomileyo eneziphelo ezivaliweyo kunye nemithwalo ekhuselweyo iyanciphisa i-particulate ingress ngexesha lokugcina nokuthunyelwa. Iinqobo zokwamkelwa kwembonakalo ye-ID / OD kunye nokucoceka zibhalwe kwi-ITP xa ukulawulwa kakubi kubalulekile.

Ukuhlolwa kunye ne-NDE Matrix

ityhubhu nganye iqinisekiswa nokuba luvavanyo lwe-hydrostatic okanye uvavanyo lombane olungonakalisiyo njengoko kufunwa yi-ASTM A213. Iikhoyili ezibalulekileyo zongeza ngokupheleleyo-i-eddi yobude{2}}yangoku okanye i-ultrasonic yokuqhubekeka iitshekhi. Ukucweba, ukuvutha kunye nokuzivocavoca kwe-flange kubonisa ukuba i-ductility yofakelo. Positive material identification (PMI) by bundle ivala i alloy{5}} identity loop.

Itheyibhile - Isicwangciso sokuqinisekisa esiqhelekileyo

Umxholo	Imfuneko eqhelekileyo
Uxinzelelo lwengqibelelo	I-Hydrostatic okanye i-NDE yombane
Ukuqhubekeka	I-100% EC / UT yenkonzo ebalulekileyo
Ukusebenziseka	Ukucaba / ukuvutha / uvavanyo lwe-flange
Isazisi kunye nokulandeleka	I-PMI, ubushushu/iqashiso kwi-MTC, i-ID ye-bundle

Ipakethe yoHando kunye neNqaku loMboneleli

Inguquko ecocekileyo ibandakanya ii-MTCs ezibotshelelwe kubushushu kunye neenyanda, ubushushu{0}}iitshathi zonyango, iirekhodi ze-NDE kunye neziphumo ze-PMI kwifomathi ekuvunyelwene ngayo. Iiprojekthi ezakhiwe malunga ne-ASTM A213 T5,Umbhobho we-Octalibonelela ngetyhubhu engenamthungo eneenkqubo zokugoba/ubushushu{0}}ezifanelekileyo{0}}ienkqubo zonyango kwaye zinokulungiselela ubungqina obuzimeleyo xa kuceliwe ukuze ubungqina obusemgangathweni bube ngobunono kwinkqubo ye-QA/QC yomnini.

FAQ

Q1: Yintoni ishubhu ye-ASTM A213 T5 (ASME SA213 T5) esetyenziselwa ntoni?
A1:I-5Cr engenamthungo{2}}0.5Mo yetyhubhu yealloyi ye-ferritic yeebhoyila, izifudumezi ezinkulu, kunye nezitshintshiselwano zobushushu kwinkonzo yobushushu obuphezulu apho i-oxidation kunye nokusebenza okurhubuluzayo kubalulekile.

Q2: Ndimele ndikhethe nini i-A213 T5 endaweni ye-T11/T22/T9?
A2:Khetha i-T5 xa ufuna ukuxhathisa ngamandla aphezulu{1}}kwiqondo lobushushu kune-oxidation esezantsi{2}}amabanga e-Cr; nyuka uye phezulu{3}}ukhetho lweCr xa umsebenzi ufuna ubushushu obuphezulu/umda wokutya ngokwekhowudi yoyilo.

Q3: Kufuneka ndicele ntoni ukuqinisekisa umgangatho we-tubing ye-ASTM A213 T5 ngaphambi kokuthenga?
A3:Cela i-3.1 MTC enenombolo yobushushu, -imeko yonyango, ikhemistri/iziphumo zoomatshini, i-NDE efunekayo (i-hydrotest okanye uvavanyo lombane njengoko kuchaziwe), ukutshekishwa kwe-dimensional, kunye nokulandeleka/ukumakishwa ngokupheleleyo.

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