ASTM A213 T5 Aloo Asewes .

Say ASTM A213 T5 et uusaren no say tube-metal temperatura tan oxidation control so mangokontrol ed design brief. Diad saray boiler, HRSG tan fired heater, say T5 so mangookupa ed banda ed tagey na 1.25-2.25Cr alloys no say scale resistance tan creep strength et kaukolan ya paaligwasen ya ag onalis ed 9Cr family. Andukey so oras na serbisyo, tua so gradient na temperatura, tan say integridad na coil et mas importante nen say aqueous corrosion.

Say T5 et 5Cr-Mo ferritic steel. Say chromium et manggagawa na matantan ya ombaleg ya oxide pian nalimitaan so scale spallation, bangta say molybdenum et mamapabiskeg ed saray carbide tan mamaatrasado ed creep deformation. Say rota na panaggawa et mankaliktan makapangiter na pareparehon ferritic matrix ya makapansiansia ed panag-ikot tan panag-operate ya anggapoy lokal ya over-malet odino over-soft iran rehyon.

Saray puntirya na komposisyon ed leksab so parad masakbay a panagsuri; say panagsaliw so ontumbok ed mananguley ya estandarte na teksto.

Table - Chemical composition (wt.%)

Sarayan melmelag so ontulong ed masakbay a panagsipa; atagey{_} temporaryo ya aabuloyan ya aabuloyan manlapud onaplikan kodigo legan na desinyo.

Table - Minimum mechanical properties

Say ASTM A213 so mangokontrol ed tubo imbes ya saray eskedyul na tubo. Saray datasheet et mangiter na OD, wall tan cut lengths pian onkana ed coil shops tan tube-to-tubesheet work.

Table - Tipikal a sukat na bintana

Say thermal history so mangokontrol ed bilay na T5 tubing, kanian say WPS/PQR et nepeg ya man-lock ed kualipikadon temperature band parad panagpainit, panaon na panag-soak, tan cooling rate. Saray liko et nagagawa panamegley na induction odino kontroladon hot forming ya parepareho so temperatura to diad padir; say alablabas ya petang na interpass odino andukey ya panag-hold et mamapaawet ed saray bukel tan mamawala na creep capability.

Kayari na panyuko, naberipika iray kayarian imbes ya ipasen. Say mapa na kaatapan a nanlapud atateng ya akapasa ed ekstraor, a walad pegley dia{1} padir, tan loob na loob, so mamepekder a nansiansia so liko ed loob na kualipikadon bintana. Saray tseke ed sukatan{3} na obra, padir, subol, subol, tan sentro na sentro na linya so man-irungan na coil odino U{}-Cus so onyurong ed tubo.

Mansiansian konserbatibo so ambetel tan lokal. Nasubaybayan so natipon a betel, tan no onlampas la itan ed proyekto et pansengegan na tubo so rebe et say rebe et say tubo{1}-smalet ed loob na kualipikadon sobre pian nabawi so inkadutak tan pinabiskeg na saray caryides. Napaliisan so ag-akontrol a pampetang na silew lapud makapawala itan na pasen dia{3} ed panag-awit odino malet iran rim.

Say heat treatment et implano bilang sakey a sistema, aliwan sakey a patch. Say materyal et niiter ed normalized-tan-tempered ya kondisyon; no say temperatura na panagporma et onlampas ed datin temper-odino no saray proseso et kaukolan ya gawaen so sigpot a re-normalize-tan-temper (odino sakey ya inmabobon ya subcritical cycle) pian nipawil so pareparehon ferritic matrix antis na hydrotest tan NDE. Saray nirekord ya tsart na temperatura parad kada siklo et i-file ed turnover package pian say in-install ya coil et na-trace ed aktual ya thermal history to.

Saray scale residues tan saray akaamot a debris et mamapatikey na bilay tan mamapaabeba ed heat-transfer efficiency. Say malinis tan amagan ID ya walay takop ya sampot to tan protektadon bundles et manlimitad iloob na particulate legan ya isimpen tan ipapawit. Saray kriterya na pangawat ed itsura tan kalinisan na ID/OD et nisulat ed ITP no importante so panangontrol ed fouling.

Kada tubo et na-verify panamegley na hydrostatic test odino nondestructive electric test unong ed kakaukolanen na ASTM A213. Saray kritikal a coil et mangaarum na full-length eddy-current odino ultrasonic continuity checks. Say panag-flatten, panag-flare tan panag-flange et mangipapanengneng na ductility parad pangi-install. Say positibon pakabidbiran na materyal (PMI) panamegley na bundle et mangisara ed alloy-identity loop.

Lamisaan {00} Tilan na veripika .

Say malinis a panagpawil et kaiba iray MTC ya akasinger ed saray petang tan petang, petang{__} panagpatambal, saray rekord na NDE tan PMI so manreresulta ed nankakasakey a panagwalwal. Parad saray proyekton impaalagey ed kaliberliber na AMIN A213,,Tubosaray suplay ya ag-ondaraak ya walay kualipikadon iyuko/petangen/painit na saray paraan tan sarag ton iyuksoy so independentin testigo ed kerew ya ipelag na de-kalidad ya ebidensya ed sistema na QA/QC.

Q1: Anto so AGEW A213 T5 (ASAKEY SA SAKE SA SAKET T5) T5) ya tubo?
A1:Anggapoy tapyas 5{}}0.5 Mas pretitikon alloy ya panag-tub ed saray managbukal, panag-init, tan panag-init na petang diad serbisyo na atagey a panaon ya say oksida et importante.

Q2: Kapigan ko nepeg ya pilien so A213 T5 imbes ya T11/T2/T9?
A2:Pilien so T5 no kaukolan moy mas mabiskeg ya resistensya ed oksidasyon ed atagey a temperatura nen say abeban grado na Cr; ontagey ed mas atagey ya -Cr ya opsyon no say duty et mankaukolan na mas atagey ya temperatura/corrosion margin unong ed design code.

Q3: Anto so nepeg kon kerewen pian naseguro so kalidad na ASTM A213 T5 ya tubo antis na pansaliw?
A3:Kerewen so 3.1 MTC ya walay number na petang, petang{1} kondisyon na kondisyon, resulta na kemikal/mekanikal, nakaukolan so NDE (say sanka-hyrost ya tseke, tan sigpot ya pakasarag a man-cheme/makagamor.

Kontaken natan

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