ASTM A335 P22 hka htung masat masa (chrome Moly hka htung) - BLOG

Hpaji hparat shingdu labau

Cr-Mo n-gang yawng hta,ASTM A335 tsang P222019 a matu grau nna htuk manu ai hparan ladat langai hpe madi shadaw ya ai.n-gun ja ai- hte n-gun ja ai-n-gun ja ai pipeline ni.
Shi gaw hpawng de ai .2.25% chromiumHte1% molibden, 100 du hkra katsi ai shara hta aten galu n-gun rawng ai shaloi, n-gun rawng ai, n-gun rawng ai, carburization ni hpe ninghkap lu ai alloy matrix hpe hpaw ya ai.620℃(1150℃F).

Ndai lam gaw aten na na .wan n-gun shapraw ai, wan sau ja ai jak, hte sau htu ai hka htung ni a bungli galaw ai gumra, P11 zawn re ai npu tsang ni hte P91 zawn re ai rawt jat ai ferritic-martensitic alloys ni a lapran na bungli galaw ai lam n bung ai hpe shingdaw ya ai.
Shi a jak rung kam hpa mai ai lam, galaw shapraw mai ai lam, aten galu-nga grin nga lu ai lam ni a rap ra ai lam gaw 2019 ning a matu kaja dik htum rai nga ai.steam baw ni, reheater hka htung ni, hte tsaw ai-katsi ai htawt sit ai lam ni.

Alloy hkrang shapraw ai lam hte hpri hpaji a npawt nhpang lam ni

Tsang P22 gaw 2019 hta lawm ai.ferritic-n-gun ja ai hpungn-gang ni a. Shi a bungli galaw ai lam gaw, hkrak hkrak engineering galaw da ai microstructure kaw na pru wa ai.n-gun ja ai ferrite hte ngang grin ai chromium-molybdenum carbides (M23C6, M6C).

Hpyen n-gun	Malawm (%)	Magam bungli hta lit
Cr (Hkromium)	1.90 – 2.60	Makawp maga ai oxide layer hpe hpaw ya nna, scaling hpe ninghkap lu ai atsam hpe jat ya ai
Mo (Molybden)	0.87 – 1.13	N-gun ja ai-hpaji hpe n-gun ja shangun nna, hprawng hkawm ai hpe ninghkap lu ai
C (Kabon)	0.05 – 0.15	N-gun ja ai hte n-gun ja ai rap ra lam hpe hkang ai
Mn (Mangai)	0.30 – 0.60	Weldability hte ngang kang ai lam hpe jat ya ai
Si (Silikon)	0.50 – 1.00	Oxidation hte corrosion hpe ninghkap lu ai atsam hpe jat ya ai
P / S	0.025 hta n law ai (sh) maren sha re.	Ductility hpe makawp maga ya nna, mam lamu ga jarit n-gun yawm mat ai hpe pat shingdang ya ai

Ndai metallurgical hkrang masa gaw:

N-gun ja ai ferrite -carbide kaji hkrangthermal load npu hta n-gun ja wa ai hpe ninghkap lu ai.
Creep-hten run ai lam ngang grin ai540–600℃hta magam bungli hkying hkum 100,000 jan galaw ai .
Grai kaja ai weld dinghpring ai lamn-gun n-gun -hpe galaw ai shaloi (PWHT).
Hkamja lam hpe hkang lu ai oxidation shadawn shadang, tube ntsa na n-gun n rawng ai hte magri hpe jahten kau ai hpe shayawm ya ai.

Hpaji masa hte katsi ai hpe ninghkap lu ai atsam

A rai	Ra ai lam	Hpaji hparat a yaw shada lam
Tensile n-gun	415 MPa (60 ksi) hta grau kaba ai (sh) maren sha re.	Aten galu-axial n-gun hpe hkam sharang lu ai
Yield N-gun	205 MPa (30 ksi) hta grau kaba ai (sh) maren sha re.	Plastic nsam galai mat ai hpe pat shingdang ya ai
galu wa ai	% hta grau kaba ai (sh) maren sha re.	Hpaga galaw ai ductility hpe jaw ya ai
N-gun ja ai	163 HBW hta n law ai (sh) maren sha re.	Weld ngang kang ai hte n-gun yawm ai hpe ninghkap lu ai

N-gun ja ai nbung laru hta, P22 gaw .600℃hta 60 MPa jan ai n-gun, cyclic pressure hte vibration npu hta pyi shi a hkrang hte dinghpring ai lam hpe naw tawn da ai.

Hpaga lam hpaji hte katsi ai tsi lajang ai lam

Carbon npu na steel ni hte n bung ai sha, P22 gaw hkrak tup ra ai .N-gun–hpyen jak hte hkang aigalaw shapraw ai lam ting hta.
Octal Pipe gaw, n-gun ja ai n-gun n rawng ai hkrang shapraw ai ladat ni hpe jai lang nna, .- lahkam law law hte katsi ai hku tsi lajang aihpri hpaji hta langai sha re ai lam hte shadawn shadang hkrak ai lam hpe hkam la lu na matu.

Hpaga lam galaw ai lam:

Billet hpe htu ai hte katsi ai hku galaw ai– Cr-Mo n-gang ni hpe 1100–1150℃hta shinggrup ai n-gang hpe lang nna htu shapraw ai.
Katsi ai sumla / Katsi ai Rolling– Grain size hte bunghku langai sha re ai hpe gram lajang ya ai.
Kaja ai hku galaw ai (940–980℃)– Ferritic nli tum ni hpe jasan jaseng ya nna, garan ginhka da ai carbides ni hpe hka ja kau ya ai.
N-gun ja ai (675-760℃)– Kata na myit ru myit tsang lam ni hpe shayawm ya ai, ductility hpe bai gram lajang ya ai, carbides ni hpe ngang grin hkra galaw ya ai.
Hka n-gun n rawng ai / nsen n-gun rawng ai chyam dinglik ai lam– Pressure atsam hte structural nsen hpe jep joi ya ai.

Dailahkawng lang-madang katsi tsi lajang ai(normalize + pawt sindawng ai) ngu ai gaw ahkyak dik rai nga ai. Dai gaw, n-gun n rawng ai, n-gun n rawng ai ferrite matrix hpe shapraw ya nna, weld ductility hpe n-gun jaw ya ai, shaning tsa lam hku galaw ai shaloi, tau hkrau chye lu ai creep performance hpe jaw ya ai.

Shadawn shadang

Parameter	Masat masa madang
Shinggan Diameter	1⁄2′′ - 24′′ (12.7 - 610 mm)
Bunghku n-gun	1.2 - 100 mm
Shadawn shadang	m du hkra (SRL/DRL/htunghking)
Dingyang ai lam	0.8 mm / m hta n law ai (sh) maren sha re.
Hpang jahtum amyu	Beveled / N-gun n rawng ai / N-gang rawng ai

Custom galaw shapraw ai zawn re aiU-bends, spools, hte baw hpawng nithermal power hte refinery system ni hpe hpyi shawn ai shaloi lu la mai ai.

N-gun ja ai nbung laru npu hta bungli galaw lu ai atsam

550℃jan bungli galaw ai masa hta P22 gaw .n-gun ja ai Cr2O3 oxide n-gundai gaw npawt nhpang magri hpe hkan nang nna, spallation hte metal sum mat ai hpe pat shingdang ya ai.
Ndai sumla hkrung gaw .tinang hkum -shamai shatsai ai lam, aten galu n-gun rawng ai aten tup hta, katsi ai hpe htawt sit lu ai atsam hte ntsa lam hpe n-gun rawng hkra galaw ya ai.

Madung bungli galaw ai atsam ningja ni:

Creep n-gun kaba ai:Matut manoi load hte pressure cycling npu hta ngang grin ai.
Thermal n-gun yawm ai hpe ninghkap lu ai atsam:Fine-grained matrix gaw jat wa ai shingjawng ai lam ni a npu hta n-gun n rawng ai hpe pat shingdang ya ai.
Shadawn shadang ngang grin ai lam:N-gun n law ai thermal jat wa ai gaw, n-gun n rawng ai weld alignment hpe madi shadaw ya ai.
Weld galaw ai lam:PWHT gaw ductility hpe bai gram lajang ya nna ngam nga ai stress hpe yeng seng kau ya ai.
Oxidation hpe ninghkap lu ai atsam:620℃du hkra kam mai ai makawp maga lam , jep joi ai aten hpe jat ya ai.

Hpaga lam hta galaw sa wa ai lam

ASTM A335 P22 alloy pipe hpe 2019 ning hta grai law hkra jai lang wa sai.wan n-gun shapraw ai, wan sau tsi hpaji, Htejasan jaseng aisectors ni hta, grau nna 2019 ning hta.superheater, reheater, hte n-gun kaba ai-hka n-gun rawng ai hka htung ni.

Matut nna tang shawn ai lam ni:

Boiler hte bai lum shangun ai hka htungsubkritik hte superkritik unit ni a matu.
Steam baw ni hpe galaw uHtesut masa galaw ai niwan jak ni hta nga ai.
Hka ja ai jak hte wan sau jak rung nidai shara hta carburizing hte oxidizing nbung ni rau nga ai.
Katsi galai ai ShellsHtegram lajang ai wa law lawaten galu-hpyen masa ngang grin lam ra ai.

N-gun atsam npawt nhpang gawgap ai lam hta shi a magam bungli jahpan gaw 2019 ning a matu shi a htuk manu ai lam hpe madi madun nga ai.matut manoi bungli galaw ai hte n-gun yawm ai aten, P22 hpe mungkan ting na high-htuk manu ai hkai sun ni hta ahkyak ai arung arai langai hku nna galaw ya ai.

Chyam dinglik ai lam & Quality hpe kam hpa ai lam

Product yawng gaw 1 hte maren rai nga ai.ASTM A335 / A999HteASME SA335madang ni hpe, ndai hku nna jep chyoi ai:

Hka n-gun n rawng ai (sh) nsen n-gun rawng ai chyam dinglik ai lam
Flattening hte flaring chyam dinglik ai lam ni
Hpaji masa hpe jep joi ai lam (hpyen n-gun, ngang kang ai lam)
Dimensional hte myi hte mu lu ai jep joi ai lam
Laksan hkra machyi ai lam hte radiographic chyam dinglik ai lam

Batch shagu hpe 1 hte sa ya ai.EN 10204 3.1/3.2 masat masa galaw ai lam, hkum tsup ai hku hkan tam lu ai lam, hte mill chyam dinglik ai lam ni hpe ka da ai.

Octal Pipe hte Engineering Kam hpa mai ai lam

Octal Pipe gaw ASTM A335 P22 hka htung ni hpe 2019 ning hta jaw ya ai.n kaja ai hte n ju n dawng ai masa, tau hkrau chye lu ai tsaw-temperature bungli galaw ai lam hte weld htuk manu ai lam hpe kam hpa ya ai.
ISO-masat da ai galaw shapraw ai lam, QA/QC hpawng de ai lam, hte masing-madang laika ni hpe ka da ai hte, Octal Pipe gaw 2019 ning a matu kam hpa mai ai alloy pipe system ni hpe jaw ya ai.Mungkan ting na thermal, wan sau htu shapraw ai, hte galaw shapraw ai hpaga lam ni.

Ya matut mahkai mai ai

FAQ

Q1: ASTM A335 P22 (ASME SA335 P22) ngu ai pipe hpe hpa a matu lang ai kun?

A1:Wan jak ni, sau htu shapraw ai shara ni, wan sau htu shapraw ai shara ni hta -katsi ai, n-gun kaba ai service piping ni hpe galaw ai.

Q2: P22 pipe a matu laksan alloy system gaw hpa rai ta?

A2:2.25Cr-1Mo (chrome-moly) ngu ai n-gang hpe n-gun n-gun hte n-gun n-gun hpe ninghkap lu na matu galaw da ai.

Q3: P22 pipe a matu gara heat treatment hpe law malawng ra ai kun?

A3:Normalizing hte tempering (N+T) hpe laika buk hta ka da ai n-gun-hpe tsi lajang ai lam ni hpe ka da ai.

Q4: P11 (sh) P91 a malai P22 hpe galoi aten hta lata ra na kun?

A4:P22 hpe P11 hta grau nna nbung katsi/creep ra kadawn ai lam a matu balanced mid-grade hku nna lata la u, raitim P91 hte law law lang matut mahkai ai grau law ai manu/hkang ai lam ni n lawm ai sha.

Q5: P22 pipe quality hpe n mari shi yang hpa hpe hpyi shawn ra ai kun?

A5:EN 10204 3.1/3.2 MTC hpe nbung hpe hkan tam lu ai, jak/chemistry mahtai, ngang kang ai, hte tsun da ai hte maren hydrostatic (sh) UT chyam dinglik ai lam ni lawm ai.

Masat masa ni

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