P92 mechanical zog yog dab tsi

A335 P92 yog tuab-cov yeeb nkab steel yeeb nkab siv dav siv nyob rau hauv siab - kub thiab siab - qhov chaw siab. Cov hlau no belongs rau martensitic tshav kub-resistant steel series thiab muaj zoo heev -kub kuj thiab txhua yam muaj zog. P92 steel yog ib qho kev txhim kho ntawm P91 steel, thiab los ntawm kev kho nws cov tshuaj muaj pes tsawg leeg, nws tseem tuaj yeem ua haujlwm tau zoo nyob rau hauv siab - qhov kub thiab txias tshaj 600℃.

GNEE Group yog cov chaw tsim khoom hauv cov yeeb nkab steel hauv Suav teb, muab cov yeeb nkab kev sib tham thiab kev ua haujlwm.5,000 tons ntawm seamless steel kav hauv Tshuag‌ – ‌shipping hauv 72 teev, kev txiav txim ceev ua ntej.

 

Cov Lus Qhia Tshwj Xeeb ntawm ASTM A335 P92

Element	Cov pa roj carbon	Manganese	Phosphorus	Sulfur	Silicon	Chromium	Molybdenum	Lwm tus
Cov ntsiab lus,%	0.07-0.13	0.30–0.60	Tsawg dua lossis sib npaug li 0.020	Tsawg dua lossis sib npaug li 0.010	Tsawg dua los yog sib npaug li 0.50	8.50-9.50	0.30-0.60	*

*V: 0.15–0.25; N: 0.03–0.07; Ni: Tsawg dua lossis sib npaug li 0.40; Al: Tsawg dua lossis sib npaug rau 0.040; Nb: 0.04-0.09; W: 1.50-2.00; B: 0.001-0.006.

 

Mechanical Properties ntawm ASTM A335 P92

Tensile zog, min.		Yield zog, min.		Elongation %, min.
ksi ua	MPa	ksi ua	MPa	Ntev	Hloov
90	620	64	440	-	20

* Kev ntsuas tensile yuav tsum tau ua nyob rau hauv chav tsev kub.

 

Cov yam ntxwv tseem ceeb ntawm A335 P92 Boiler raj:

• Siab -Tsub Muaj Zog: Ntau dua lossis sib npaug rau 100MPa creep zog ntawm 600℃/ 100,000 teev, kev txhim kho 20% dhau P91, tso cai rau 15-20% txo qis hauv kev tsim phab ntsa tuab.
• Creep Resistance: Khaws lub zog nkag siab tshaj 480MPa ntawm 650 degree, ua tau raws li cov kev cai ntawm ultra-supercritical units.
• Thermal Fatigue Resistance: Tsawg coefficient ntawm thermal expansion (13.5 × 10⁻⁶ / degree) thiab zoo thermal conductivity (26-29W / (m·K)), hloov mus rau qhov kub hloov ceev.
• Corrosion Resistance: Oxidation tus nqi qis dua 0.05mm / xyoo nyob rau hauv qhov chaw ib puag ncig ntawm 600 degree; hydrogen-induced cracking rhiab heev nyob rau hauv sulfur- muaj ib puag ncig tsuas yog 1/3 ntawm cov khoom siv.

 

Cov txheej txheem ntau lawm thiab kev tswj xyuas zoo

Smelting txheej txheem:

Ib txheej txheem triple ntawm hluav taws xob arc rauv + LF refining + VD nqus tsev degassing yog ua haujlwm. Sulfur thiab phosphorus cov ntsiab lus Tsawg dua los yog sib npaug rau 0.010%, cov ntsiab lus oxygen tsawg dua lossis sib npaug li 20ppm. Qee cov tuam txhab siv ESR electroslag remelting los txhim kho purity ntxiv.

Txheej Txheem:

Piercing Rolling: Nruam cam khwb cia puag ncig cov pob zeb yog rhuab mus rau 1200-1250℃nyob rau hauv lub nplhaib rauv thiab tsim siv ib tug Mannesmann skew dov zeb. Compression ratio Ntau dua lossis sib npaug rau 3: 1, eccentricity Tsawg dua lossis sib npaug li 5%.

Kub Extrusion Technology: Extrusion presses ntawm 3500 tons los yog ntau tshaj yog siv rau ib tug -lub sij hawm tsim nyob rau hauv lub 900-1100℃ntau yam. Haum rau tuab-walled tube ntau lawm, nrog zoo microstructure uniformity dua cov txheej txheem tho.

Kev kho cua sov:

Normalizing: 1040-1080℃(30-50℃rau AC3 thiab siab dua), tuav lub sijhawm 30 feeb rau 25mm thickness.

Tempering: 760-780℃(hauv qab AC1 taw tes), tuav tsawg kawg 4 teev kom tau txais cov qauv tempered martensite, hardness 180-250 HB.

Test Standards:

Txhua batch ntawm cov khoom yuav tsum xeem dhau tshuaj muaj pes tsawg leeg kev soj ntsuam, mechanical zog kuaj (lub zog tensile Ntau tshaj los yog sib npaug zos rau 620MPa, yield zog Ntau tshaj los yog sib npaug zos rau 440MPa, elongation Ntau tshaj los yog sib npaug rau 20%), tsis yog- kuaj kev puas tsuaj (100% ultrasonic kuaj, rhiab heev} Φ1. kev tshuaj xyuas (grain loj 5-8, non-metallic inclusions Tsawg dua los yog sib npaug rau 1.5).

 

A335 P92 Alloy steel yeeb nkab rau siab kub Daim Ntawv Thov Cheeb Tsam thiab Engineering Case

Kev lag luam fais fab:

Ultra-supercritical Boilers: Cov kav dej loj (566-620℃/ 25-30MPa), rov ua cov kav dej kub (qhov tshwj xeeb Φ508 × 80mm).

Case Study: Ib chav tsev 1000MW hloov P91 nrog P92 tubing, txo cov thee txhua xyoo los ntawm 18,000 tons, yeeb nkab phab ntsa thickness 15%, thiab kub poob los ntawm 8%.

Nuclear Fais Fab: Kev txhim kho P92 steel siv nyob rau hauv lub ntsiab feedwater piping ntawm lub AP1000 chav tsev yog siv nyob rau hauv lub tshav kub hloov raj ntawm lub plaub - tiam siab - kub kub -cooled reactor chav generator, exhibiting superior tsis kam rau hluav taws xob embrittlement piv rau austenitic steel.

Petrochemical Kev Lag Luam:

Hydrogenation Reactor Piping: Nyob rau hauv 550℃/ 15MPa tej yam kev mob, P92 pipeline nyob rau hauv ib tug refining project ua tsis tu ncua rau 5 xyoo nyob rau hauv sulfur- muaj cov xov xwm tsis exhibiting hydrogen embrittlement.

Ethylene Cracking Unit Quenching Boiler Tubes: Resistant mus rau siab -kub thiab siab - siab zog qhov cuam tshuam, nrog lub neej peb zaug ntev dua li cov khoom siv ib txwm muaj.

Lwm yam kev siv:

Hnub ci hluav taws xob tsim hluav taws xob: Hauv molten ntsev thermal cia tshuab, P92 yog ib qho ntawm ob peb cov khoom siv hlau uas muaj peev xwm tiv taus molten ntsev corrosion ntawm 565 degree. Nws tau txais kev pom zoo hauv 12 txoj haujlwm thoob ntiaj teb nrog lub peev xwm tshaj 50MW.

IGCC ua ke lub voj voog: Ua haujlwm rau syngas corrosion, ncua kev txij nkawm ntawm 8000 teev txog 20000 teev.

 

A335 P92 Alloy steel yeeb nkab Hoobkas

Kev cai -ntev kav (6m / 12m)‌ – ‌24-teev teb, tsis yog -ntev ntev xa hauv+3 hnub, tsis muaj ncua