I-ASTM A213 T9 Ingxubevange yentsimbi yeTubing

Iibhanki zeheater enkulu, iisekhethi zereheater, amacandelo e-HRSG econvection kunye ne-heater coil ubuso betyhubhu{0}}amaqondo obushushu entsimbi kunye nemithwalo ye-oxidation ezongamela i-alloys esezantsi{1}}eCr. I-ASTM A213 T9 inikezela amandla ashushu aphezulu kunye nokuziphatha okuthe nkqi kunamabakala e-1.25-2.25Cr ngaphandle kobuntununtunu bokwenziwa kweentsimbi ze-9Cr-V-Nb, ezenza kube lukhetho olusebenzayo apho iiyure ezinde, i-thermal gradients kunye nokuthembeka kwekhoyili zilawula umngcipheko.

I-ASTM A213/SA213 ichaza i-alloy engenamthungo{2}}intsimbiimibhobhokwiibhoyila kunye nabatshintshisi bobushushu. Iiprojekthi zichaza i-diameter yangaphandle, ubuncinane bodonga kunye nobude bokusika ngokuthe ngqo kwi-database endaweni yeeshedyuli zemibhobho. Ukuthe tye kunye ne-ovality zikholisa ukuqiniswa kwityhubhu-ukuya{3}}ukulingana kweshiti; Iziphelo zinikezelwe ngokungenanto okanye isikweri{4}}ukusikwa kwi-welding ye-welding, kunye nee-bevels kuphela apho ukuwelda kwe-butt kucwangciswe khona.

Itheyibhile 1 - A213 T9 ukwakheka kweekhemikhali (wt.%)

Itheyibhile 2 - Ubuncinane beempawu zovavanyo

Uyilo lusebenzisa uxinzelelo oluvumelekileyo kwiqondo lokushisa lokusebenza ukusuka kwikhowudi yokulawula.

Ukusebenza kulawulwa yiubushushu besinyithi, ukuqala-ukuyeka ukuphindaphinda kunye nediphozithi yomphezuluukusebenza kunye. Nge ~ 9% Cr, i-oxidation ithande ukulandela aumthetho parabolic(ioksidi{0}}ukutyeba² ≈ k · ixesha); umlinganiselo weparabolic usezantsi kakhulu kuneezantsi{1}}Cr steels, ezinqanda ubukhulu besikali kunye neziganeko zokusasazeka. I-Mo izinzisa i-carbides, ilibazisa ukutya okuziinkozo{3}}ukutyibilika komda kunye nokukhula komngxuma ukuze ilahleko yodonga ukusuka kwixesha{4}}okuxhomekekayo kucothise.

Kwiamacandelo ashushu, awomileyoezifana-neesekethe zokufudumeza ngokutsha kunye neebhanki zokuhambisa izifudumezi, i-T9 igcina ukungqukuva kunye nobukhulu bodonga ngcono kuneenketho ze-1.25-2.25Cr, ukunciphisa ukuphindaphindeka kwe-retube kunye nokungcola okusezantsi okubangelwa sisikali seshedi. Kumsebenzi we-HRSG kunye nokuhamba ngebhayisikile rhoqo, i-thermal transients iphakamisa uxinzelelo lwe-oxide kunye nokwandisa ukusasazeka/"re{5}}i-oxidation"; ukumodareyitha iirempu zeendlela, ukongeza{6}}ukuvuthela, kunye nokulandela umkhondoityhubhu -ubushushu bentsimbi (TMT)iindawo ezishushu zinciphisa umngcipheko. Imiba yediphozithi yekhemistri: ialkali -etyebileyo okanye isulfure{2}}ethwele uthuthu inokuguqula ioksidi kwaye ikhawulezise uhlaselo lwasekhaya, ngoko uhlalutyo lwamafutha / uthuthu oludityaniswe nokuhlolwa kwebhoresikopu lusetyenziselwa ukucwangcisa ukucoca kunye nokuhlola amaxesha.

Kwi-creep, i-advanteji ye-T9 ihlala kwindawoummandla wobomi-obude: isohlwayo, ingqolowa eqhubekayo{0}}umda womnatha we-carbide ukusuka kubushushu obufanelekileyo iphucula ixesha lokukrazuka kwaye igcina i-deformation ifanayo. Ubushushu obugqithisileyo okanye engalunganga{2}}elawulwa ngokutsha ukufudumeza kweenkozo kunye ne-spheroidizes carbides, ivelisa ukugquma kwangaphambili, ukuvuza okanye ukuvuza. Ngokwesiqhelo, ezihamba phambiliUbunzima beoksidi / ubunzimakunye nembali ye-TMT ibonelela ngesiseko sobungqina bokucwangciswa kohlolo.

Itheyibhile 3 - Umqondiso wommandla vs. impendulo yobunjineli

Itheyibhile 4 - imvulophu yomlinganiselo oqhelekileyo

Umphezulu womphezulu uhlala ugqiba ubomi bonke emsebenzini oshushu. Ilophu yolawulo ebonakalayo yile:de-isikali → coca → yomile → ikepusi → songela → qinisekisa. Emva kokwenza, susa i-tint yokushisa kunye nesikali esishiyekileyo kwi-ID / OD; gungxula ngemidiya ecocekileyo, uze womise i-ID kwithagethi ebhaliweyo (umzekelo, indawo yombethe ezantsi kwe-ambient ngomda ochaziweyo). Fitiminqwazi eqinilekwaye usebenzise ukusonga okukhuselekileyo okuxhathisa uthuli kunye nokufuma; gcina iinyanda ukusuka emgangathweni kunye ne-drainage kunye nokhuseleko lwe-UV.

Ulwamkelo lukwi-ITP ukuze i-QA isayine ngaphandle kwengxoxo. Chaza ukuba kuthetha ukuthini "ukucoceka" (udidi olubonakalayo, i-chloride / imilinganiselo ye-oyile ukuba iyasebenza), ukuba ukoma kuhlolwa njani, kwaye yeyiphi ipakethe efunekayo kwimozulu yokugcina. Gcina ikharbhon-isixhobo sentsimbi kude netyhubhu ye-T9 ukunqanda{4}}ufakelo lwentsimbi lwasimahla; apho iivenkile ezixubileyo zingenakuthintelwa, qhuba iposti{5}}cocajonga i-ferroxylkwiisampuli. Ngaphambi kokuba ukhululwe, rekhoda iifoto kwaye ubeke i-log yokugcina kunye ne-ID ye-bundle ukuze abasebenzi bofakelo bazi ukuba umgca awungcoliswanga kwindawo yokugcina.

Kwiiprojekthi ezigxile kwi-ASTM A213 T9,Umbhobho we-Octalibonelela ngeetyhubhu ezingenamthungo, ilungelelanisa iinkqubo kunye namaxwebhu kunye neprojekthi ye-ITP, kwaye inokulungiselela ubungqina obuzimeleyo (umzekelo, i-BV, i-SGS) xa kuyimfuneko.

Q1: Yintoni ishubhu ye-ASTM A213 T9 (ASME SA213 T9) esetyenziselwa ntoni?
A1:I-9Cr engenamthungo{2}}1Mo ye-ferritic alloy tubing yezibiyitha, izifudumezi ezinkulu, kunye nezitshintshisi-bushushu kubushushu obuphezulu{3}, inkonzo yoxinzelelo oluphezulu.

Q2: Ngaba A213 T9 ilingana A335 P9?
A2:Ngokuqhelekileyo ziphathwa njengezilingana ngekhemistri/i-UNS (T9=i-tubing spec, P9=i-specc yombhobho), kodwa kufuneka utshatise umgangatho ofunekayo weprojekthi kunye nomda wovavanyo.

Q3: Kufuneka ndicele ntoni ukuqinisekisa umgangatho wetyhubhu ye-ASTM A213 T9 ngaphambi kokuthenga?
A3:I-3.1 i-MTC enenombolo yokushisa + imeko yonyango lokushisa, i-chemistry / iziphumo zemishini, i-hydrotest okanye i-NDE (njengoko kucacisiwe), ukuhlolwa kwe-dimensional, kunye nokumakisha ngokupheleleyo / ukulandelwa.

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