Vuam txheej txheem P22

 

Cov txheej txheem vuam rau P22 yog hais txog cov lus qhia tshwj xeeb thiab cov kauj ruam uas cuam tshuam rau kev vuam P22 alloy, uas yog qis- alloy steel feem ntau siv rau hauv siab - cov ntawv siv kub xws li cov chaw tsim hluav taws xob thiab petrochemical refineries. ASTM A335 P22 yog tsim los ua 2.25% chromium thiab 1% molybdenum alloy.

Hauv qab no yog cov txheej txheem dav dav ntawm cov txheej txheem vuam rau Alloy Steel P22:

1. Kev npaj:
- Xyuas kom meej tias lub hauv paus hlau, cov hlau muab tub lim, thiab cov khoom siv vuam yog huv thiab tsis muaj kab mob.
- Xaiv cov hlau muab tub lim tsim nyog uas sib xws nrog cov khoom siv P22. Feem ntau, ER80S-B2 lossis ER90S-B3 muab tub lim yog siv.
- Preheat lub hauv paus hlau yog tias xav tau. Lub preheat kub yuav nyob ntawm seb lub thickness ntawm cov khoom thiab cov vuam code ua raws li. Feem ntau, qhov kub thiab txias ntawm ib ncig ntawm 200-300℃(392-572℃F) yog siv.

2. Kev siv vuam:
- Siv cov txheej txheem vuam tsim nyog raws li daim ntawv thov thiab cov cai. Cov txheej txheem dav dav rau vuam P22 suav nrog roj tungsten arc vuam (GTAW / TIG), tiv thaiv hlau arc vuam (SMAW), thiab roj hlau arc vuam (GMAW / MIG).
- Teem lub vuam tsis xws li tam sim no, qhov hluav taws xob, kev mus los nrawm, thiab tiv thaiv cov roj ntws raws li txoj cai vuam, sib koom tsim, thiab cov khoom tuab.
- Tuav lub arc ruaj khov thiab ua kom muaj kev tiv thaiv roj kom zoo los tiv thaiv lub pas dej ntawm oxidation thiab atmospheric paug.
- Siv cov kev sib koom ua ke kom haum- nce thiab siv cov txheej txheem vuam tsim nyog (xws li, xaws, stringer hlaws) raws li kev sib koom ua ke tsim thiab vuam txoj cai.

3. Tshaj tawm -Kev kho Weld:
- Tso cai rau cov welded sib koom ua kom txias qeeb thiab ib txwm ua kom txo tau cov kev ntxhov siab uas seem.
- Tom qab-weld heat treatment (PWHT) tej zaum yuav tsim nyog nyob ntawm qhov vuam code thiab thickness ntawm cov khoom. PWHT pab txhim kho cov khoom siv kho tshuab thiab txo qhov kev pheej hmoo ntawm kev tawg.
- Ua ib qho uas yuav tsum tau ua tsis yog -kev kuaj kev puas tsuaj (NDT) xws li kev tshuaj xyuas qhov muag, kuaj hluav taws xob, kuaj ultrasonic, lossis kev ntsuas tshuaj zas xim kom ntseeg tau qhov zoo ntawm cov vuam.

 

ASTM A335 P22 txheej txheem vuam yuav tsum nruj preheating (200℃-300 degree) thiab Post-Weld Heat Treatment (PWHT) los tiv thaiv hydrogen cracking. Xyoo 2026, cov khoom siv tus nqi rau P22 alloy steel yog li ntawm $ 1.2 txog $ 3.5 ib kg, dav siv nyob rau hauv siab -siab cov kev pab cuam thiab petrochemical nroj tsuag vim nws superior creep zog thiab 2.25% Chromium cov ntsiab lus.

 

ASTM A335 P22 Pipe Chaw tsim tshuaj paus

HT PIPE yog ib tug zoo-paub stockist thiab exporter. Peb yog p22 alloy steel khoom xa khoom nrog 15+ kev xa tawm. Peb tsis tsuas yog muabcov kav dej, daim hlau, round bars, tab sis kujyeeb nkab flanges, flanges, thiab lwm yam hu rau peb kom paub ntau ntxiv thiab cov nqi dawb.

Hu rau tam sim no

P22 Vuam Specifications:

• Filler Hlau: ER80S-B3 (TIG) / E8018-B3 (Stick)
• Preheat Temp: Yam tsawg kawg 200 ∘C (400 ∘F)
• Interpass Temp: Ntau tshaj 350 ∘C (660 ∘F)
• PWHT Kub: 675 ∘C - 720 ∘C
• Kev ntsuas siab: Txog Chav Kawm 2500 (tus qauv nyob ntawm)
• Qhov Loj: 1/2 "mus rau 36" Nominal Pipe Size (NPS)

 

ASTM A335 P22 Khoom Vuam Cov kauj ruam

Alloy A335 P22 yog siv los ua cov kav hlau. Cov txheej txheem vuam rauAlloy A335 P22 yeeb nkabkoom nrog ob peb kauj ruam. Cov kauj ruam no tau piav qhia hauv qab no:

1. Npaj cov yeeb nkab: Ua ntej pib txheej txheem vuam, P22 yeeb nkab yuav tsum tau ntxuav kom huv si kom tshem tawm cov av, xeb, lossis lwm yam kab mob. Qhov no tuaj yeem ua tiav los ntawm kev siv cov hlau txhuam los yog lub log sib tsoo.

 

2. Preheat cov yeeb nkab: Preheating yog qhov tseem ceeb thaum vuam Alloy A335 P22 yeeb nkab. Cov yeeb nkab yuav tsum tau preheated rau qhov kub ntawm 250 ° F thiab 400 ° F kom tsis txhob tawg thiab ua kom muaj suab nrov.

 

3. Xaiv txoj kev vuam: Muaj ntau txoj kev vuam uas tuaj yeem siv rau vuam ASTM A335 P22 yeeb nkab. Cov no suav nrog Flux-Cored Arc Vuam (FCAW), Gas Tungsten Arc Vuam (GTAW), thiab Shielded Hlau Arc Vuam (SMAW).

 

4. Siv cov khoom muab tub lim kom raug: Cov khoom siv muab tub lim siv rau vuam alloy steel P22 yeeb nkab yuav tsum yog cov hlau zoo ib yam lossis zoo ib yam li cov yeeb nkab nws tus kheej. Qhov no yuav ua kom muaj zog, zoo weld.

 

5. Weld cov yeeb nkab: Pib vuam cov yeeb nkab p22 siv txoj kev xaiv, pib ntawm lub hauv paus hla thiab ua haujlwm sab nraud. Vuam yuav tsum tsis tu ncua thiab txawm, tsis muaj qhov khoob lossis voids.

 

6. Tshaj tawm -weld heat treatment: Thaum cov txheej txheem vuam tiav lawm, cov yeeb nkab a335 alloy yuav tsum tau txais kev tshaj tawm -weld heat treatment kom txo tau cov kev ntxhov siab nyob hauv cov hlau.

 

7. Tshawb xyuas cov weld: Thaum kawg, P22 cov neeg muab khoom qhia tias cov vuam yuav tsum tau kuaj xyuas kom nws ua tau raws li qhov yuav tsum tau ua thiab cov qauv. Qhov no yuav suav nrog kev tshuaj xyuas qhov muag, x- kuaj kab hluav taws xob, lossis lwm txoj hauv kev raws li xav tau.

 

 

P22 vs P11 vs P91

Feature	P11 (1.25Cr-0.5Mo)	P22 (2.25Cr-1Mo)	P91 (9Cr-1Mo-V)
Max Temp	550 degree	600 degree	650 degree
Vuam nyuaj	Nruab nrab	Siab (Xav tau PWHT)	Siab heev (Strict PWHT)
Nqe Index	Base ($)	1.2 x Base ($$)	3 x Base ($$$)
Zoo tshaj rau	Tsawg-siab zog	Siab -siab zog	Ultra{0}}supercritical

 

 

1. Dab tsi yog txheej txheem ntawm Vuam P22 Khoom?

Kev Npaj Cov Yeeb Nkab → Yeeb Nkab Preheating → Xaiv Txoj Kev Vuam → Xaiv Cov Khoom Siv Filler → Root Pass → Sau thiab Cap Passes → Ncej - Weld Thaum tshav kub kub kho (PWHT) → Kev tshuaj xyuas

 

2. P22 Cov khoom siv vuam Filler Hlau / Electrode yog dab tsi?

• GTAW (TIG): ER90S-B3
• GMAW (MIG): ER90S-B3
• SMAW (Stick): E9018-B3
• SAW (Submerged Arc): EB3/FB3

 

3. P22 Khoom Qib yog dab tsi?

ASME SA 335 GR P22 yog ferritic chromium -molybdenum alloy steel yeeb nkab, feem ntau yog siv rau siab - kub, siab - siab siab - khaws cov khoom.

 

Khoom siv:

• Kev khiav hauj lwm kub: -29 ℃ to 650 ℃
• Zoo heev -kub creep zog
• Oxidation kuj
• Resistance rau hydrogen sulfide corrosion
• Zoo weldability; preheating thiab post-weld heat treatment (PWHT) yuav tsum tau

 

4. P11 txog P22 Vuam Electrode yog dab tsi?

Rau Shielded Hlau Arc Vuam (SMAW), electrodes xws li E8018-B2 thiab E8018-B3 (AWS A5.5) tej zaum yuav raug xaiv. P11 (1.25Cr-0.5Mo) thiab P22 (2.25Cr-1Mo) yog ob qho tib si cov hlau tsis tshua muaj hluav taws kub-resistant. Preheating yuav tsum tau ua ntej vuam (150-200℃rau P11; 200-300℃rau P22). Tom qab Weld Thaum tshav kub kub kho (PWHT) yog ua tom qab vuam.

 

5. Vim li cas P22 vuam yuav tsum tau preheating?

P22 muaj zog hardenability. Preheating rau 200 ∘ C slows tus nqi cua txias, tiv thaiv kev tsim ntawm brittle martensite thiab txo qhov kev pheej hmoo ntawm hydrogen-induced cracking.

 

6. Kuv puas tuaj yeem txuas P22 rau Carbon Steel (A106-B)?

Yog lawm, siv ER80S-B3 muab tub lim lossis cov khoom tsis zoo xws li ER309L (nyob ntawm daim ntawv thov). Txawm li cas los xij, PWHT tseem yuav tsum tau kub siab rau P22 cua sov- thaj tsam cuam tshuam.

 

7. Tus nqi nruab nrab ntawm P22 yeeb nkab yog dab tsi xyoo 2026?

Tus nqi lag luam tam sim no zaum ntawm $ 1,200 thiab $ 3,500 ib metric ton, nyob ntawm seb cov yeeb nkab yog seamless lossis welded thiab tus nqi tam sim no ntawm Molybdenum.

 

8. Puas yog PWHT yuav tsum muaj rau txhua qhov P22 welds?

Feem ntau, yog. Raws li ASME B31.3, P22 (P-Tsis yog 5A) yuav tsum muaj PWHT rau txhua qhov tuab los xyuas kom meej ductility.

 

Hais txog Zhengzhou Huitong Pipeline Equipment Co., LTD.

HT PIPE yog ib tug zoo-paub stockist thiab exporter. Peb yog cov khoom siv stainless / carbon / npib tsib xee / alloy khoom nrog 15+ kev xa tawm. Peb tsis tsuas yog muab cov kav dej, phaj, puag ncig, tab sis kuj yog cov yeeb nkab fittings, flanges, thiab lwm yam. Tiv tauj peb kom paub ntau ntxiv thiab cov nqi dawb.

 

Tus sau: Chloe Pu (5 xyoos hauv stainless hlau, nickel alloy, thiab carbon steel kev lag luam)

Hloov tshiab kawg:maj 72026 (Beijing Sijhawm)