ASTM A213 T5 n-gang n-gang n-gang

ASTM A213 T5 hpe gaw, hka htung-hpyen n-gun hte n-gun n-gun hpe hkang ai lam hpe uphkang ai shara hta lang ai. Boiler, HRSG hte wan wut ai jak ni hta, T5 gaw 9Cr dinghku de n htawt ai sha, scale ninghkap ai lam hte creep n-gun hpe grau kaja hkra galaw ra ai shaloi, 1.25–2.25Cr alloys ni a ntsa na band hpe zing la ai. Service aten ni gaw galu ai, nbung katsi ai lam ni gaw teng sha nga ai, coil a dinghpring ai lam gaw hka lim ai hta grau ahkyak ai.

T5 gaw 5Cr–Mo n-gun rawng ai n-gang re. Chromium gaw scale spallation hpe pat shingdang na matu n-gun n rawng ai-gaja wa ai oxide hpe gawgap ya nna, molybdenum gaw carbides hpe ngang grin hkra galaw ya nna, n-gun n rawng ai hpe shayawm ya ai. Ndai galaw shapraw ai lam gaw, buga ginra hta grai ja ai (sh) grai n-gun ja ai ginra ni n lawm ai sha, shinggrup ai hte bungli galaw ai hpe hkrung nga lu ai, langai sha re ai ferritic matrix hpe jaw ya na matu yaw shada ai.

Lawu na composition target ni gaw, aten dep jep joi na matu re; mari ai lam gaw uphkang ai madang laika hpe hkan sa ai.

Laika man - Hpaji n-gun (wt.%)

Ndai minima ni gaw aten dep sizing galaw na matu karum ya ai; high-hkum hkrang n-gun hpe ahkang jaw ai lam ni hpe design galaw ai shaloi jai lang mai ai code kaw na la ai.

Table - N law htum jak rung atsam marai ni

ASTM A213 gaw pipe schedule ni hta grau nna tubing hpe uphkang ai. Datasheet ni gaw coil shop ni hte tube-to-tubesheet bungli hte htap htuk hkra OD, bunghku hte cut galu ai lam ni hpe tsun dan ai.

Table - Laksan shadawn shadang hkuwawt

Thermal labau gaw T5 tubing a service life hpe uphkang ai majaw, WPS/PQR gaw katsi ai, hka lim ai aten, katsi ai n-gun a matu, n-gun rawng ai nbung band hta lock galaw ra ai. Bends ni hpe induction (sh) bunghku hku nna n bung ai nbung katsi ai hte hkang zing da ai hot forming hku nna shapraw ai; grai law ai interpass katsi ai (sh) aten galu hkam la ai gaw, hkaulan mam ni hpe n-gun ja shangun nna, hprawng hkawm ai atsam hpe shayawm kau ya ai.

Bending ngut ai hpang, properties ni hpe sawn la ai hta grau nna, jep joi ai lam galaw ai. Extrados, mid-bunghku, hte intrados ni hpe lai nna, kanu magri kaw na ngang kang ai map gaw, dai bend gaw qualified window kata kaw naw nga nga ai hpe madi madun nga ai. Dai majaw, n-gun n rawng ai sha, coil (sh) U{5}}bend gaw, n-gun n rawng ai sha, tube-sheets ni hte madi shadaw ai lam ni hta dung nga na hpe kam mai ai.

Cold straightening hte buga ginra hta gram lajang ai lam ni hpe n-gun n rawng ai sha tawn da ai. Hpa majaw nga yang, n-gun rawng ai n-gun hpe hkan tam nna, project trigger hpe lai mat wa ai shaloi, ductility hpe bai lu la na matu hte carbides ni hpe ngang grin hkra galaw na matu, n-gun rawng ai envelope kata de bai-katsi shangun ai. N hkang lu ai wan wut ai hpe koi ai gaw, spot over-tempering (sh) hard rims byin shangun ai majaw re.

Heat tsi lajang ai lam hpe patch hku n re ai sha, system hku nna masing jahkrat da ai. Material hpe normalized-hpe-tempered masa hta jaw ai; n-gun rawng ai nbung laru ni gaw shawng na nbung laru hta grau ai shaloi-shing nrai, hydrotest hte NDE garai n galaw shi yang, n-gun rawng ai ferritic matrix hpe bai gram lajang na matu, n-gun rawng ai hpe hkum tsup hkra galaw ra ai shaloi-n-gun rawng ai (sh) myit hkrum da ai subcritical cycle hpe galaw ra ai shaloi. Cycle langai hte langai a matu ka da ai nbung laru chart ni hpe turnover package hta bang da ai majaw, jung da ai coil hpe shi a tengman ai nbung laru labau hpe hkan tam lu na re.

Scale residues hte embedded debris ni gaw asak hpe kadun shangun nna, katsi ai-hpyen yen hpe htawt sit ai atsam hpe shayawm ya ai. San seng ai, hkyet mat ai ID gaw, n-gup magap ni hpe shinggrup da nna, makawp maga da ai n-gup magap ni hpe tawn da ai hte htaw sa ai shaloi, n-gun n rawng ai n-gun ni hpe pat shingdang da ai. ID/OD hkrang hte san seng ai lam a matu hkap la ai masat masa ni hpe fouling control galaw ai aten hta ITP hta ka da ai.

Tube langai hpra hpe ASTM A213 hta ra ai hku nna hydrostatic chyam dinglik ai lam (sh) n jahten sharun ai wan chyam dinglik ai lam hku nna jep joi ai lam galaw ai. Hkrak ai coil ni gaw -galu ai eddy-ya aten (sh) ultrasonic matut manoi ai lam hpe jep yu ai lam ni hpe jat bang ya ai. Flattening, flare hte flange galaw ai lam ni gaw, jung na matu ductility hpe madun dan ai. Bundle hku nna kaja ai arung arai hpe chye ginhka ai (PMI) gaw alloy- chye ginhka ai loop hpe pat kau ya ai.

Table - Laksan jep chyoi ai masing

San seng ai galai shai ai lam hta, n-gun hte n-gun n-gun ni hpe gyit da ai MTC ni, n-gun-tsi lajang ai chart ni, NDE jahpan ni hte myit hkrum da ai hkrang hta PMI mahtai ni lawm ai. ASTM A213 T5 grup yin hta gawgap da ai bungli masing ni a matu,Octal Pipen-gun n rawng ai hka htung ni hpe n-gun rawng ai bending/heat-hpaji ladat ni hte jaw ya nna, hpyi shawn ai shaloi, shanglawt ai sakse hkam ai lam hpe lajang ya lu ai majaw, n-gun rawng ai sakse ni gaw madu a QA/QC system de hkrak hkrak hkrat wa ai.

Q1: ASTM A213 T5 (ASME SA213 T5) ngu ai hka htung hpe hpa a matu lang ai kun?
A1:5Cr-0.5Mo ferritic alloy tubing hpe n-gun n rawng ai, n-gun ja ai n-gun rawng ai jak ni, n-gun ja ai n-gun rawng ai jak ni a matu, n-gun rawng ai n-gun rawng ai shara ni hta galaw ai.

Q2: T11/T22/T9 a malai A213 T5 hpe galoi aten hta lata ra na kun?
A2:T5 hpe npu -Cr grade ni hta grau n-gun ja ai n-gun ja ai-n-gun ja ai oxidation hpe ninghkap lu ai atsam ra ai shaloi lata u; step up to higher-Cr lata la mai ai lam ni hpe duty gaw design code langai hte langai grau tsaw ai nbung/hten run ai lam hpe ra sharawng ai shaloi.

Q3: ASTM A213 T5 tubing hpe n mari shi yang, n-gun hpe jep yu na matu hpa hpe hpyi shawn ra ai kun?
A3:3.1 MTC hpe n-gun jahpan, n-gun-tsi lajang ai masa, chemistry/mechanical mahtai, ra ai NDE (hydrotest (sh) tsun da ai hte maren wan n-gun chyam dinglik ai lam), shadawn shadang jep joi ai lam ni, hte hkum tsup ai hku hkan tam lu ai/masat da ai lam ni hpe hpyi shawn u.

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