P420Myog ib qho thermomechanically dov zoo-cov hlau hlau tsim los siv rau hauv cov hlab ntsha thiab cov boilers, tsim raws li European tus qauvTS EN 10028-5.
Nomenclature Breakdown
P: Qhia nws haum rauSiablub hom phiaj.
420: Hais txog qhov tsawg kawg nkausYield zogntawm 420 MPa rau qhov qis tshaj thickness ntau.
M: Signifies tusThermomechanical Rolling(TMCP) kev xa khoom
GNEE muab P420M boiler phaj specification:
Thickness: 6MM txog 300MM lossis raws li koj xav tau;
Dav: 1500mm txog 4050mm lossis raws li koj xav tau;
Ntev: 3000mm txog 15000mm lossis raws li koj xav tau.
Cov cuab yeej cuab tam rau P420M steel phaj:
| Thickness (hli) | Yield zog (Ntau dua lossis sib npaug rau Mpa) | Tensile zog (Mpa) | Elongation nyob rau hauv ntau dua los yog sib npaug rau ,% |
| T Tsawg dua los yog sib npaug rau 16 | 420 | 500-660 | 19 |
| 16<> | 400 | ||
| 40<> | 390 |
Cov tshuaj muaj pes tsawg leeg rau P420M steel phaj (Kev Ntsuas Kub Max%)
| Cov ntsiab lus tseem ceeb ntawm P420M steel phaj | ||||||
| C | Si | Mn | P | S | Al (tag nrho) | N |
| 0.16 | 0.50 | 1.70 | 0.025 | 0.020 | Ntau dua lossis sib npaug rau 0.020 | 0.020 |
| Mo | Nb | Ni | Ti | V | Cr + Cu + Mo | |
| 0.20 | 0.05 | 0.50 | 0.05 | 0.10 | 0.60 | |
Mechanical Properties
| Thickness (hli) | Yield zog (MPa) | Tensile zog (MPa) | Elongation (%) |
|---|---|---|---|
| Tsawg dua los yog sib npaug li 16 | min . 420 | 500 – 660 | min . 19 |
daim ntawv thov
1. Lub zog & lub zog tsim
Boiler Drums: Siv los ua lub plhaub tseem ceeb rau siab -siab boilers nyob rau hauv cov fais fab nroj tsuag los tuav lub zog tsim.
Hydropower: Fabrication ntawm siab - cov kav dej siab (penstocks) rau cov chaw nres tsheb dej.
Nuclear & Thermal: Cheebtsam rau nuclear reactor siab plhaub thiab chav generators.
2. Petrochemical & Tshuaj Kev Lag Luam
Cia Tank: Saum toj thiab hauv av tso tsheb hlau luam rau khaws cov roj tsis hloov pauv, cov roj liquefied (LPG), thiab kua roj ntuj (LNG).
Cov Khoom Siv Ua Haujlwm: Kev tsim cov reactors, cov khoom siv hluav taws xob sib hloov, thiab cov pa roj kheej kheej kheej kheej.
Kev Thauj Mus Los: Cov tsheb ciav hlau siab siab tsheb ciav hlau tsim los rau kev nyab xeeb ntawm cov kua thiab tshuaj lom neeg.
3. Industrial Infrastructure
Steel & Cement Cog: Siv nyob rau hauv cov qauv kev lag luam uas yuav tsum tau txhim kho cov cuab yeej cuab tam ntawm kev ua haujlwm siab.
Mechanical Engineering: High -load structural Cheebtsam uas muaj kev nyab xeeb thiab tsis kam mus nkig tawg yog qhov tseem ceeb.
4. Tsawg-Tsuas Kub Variants
Thaum tus qauv P420M raug kuaj rau qhov cuam tshuam ntawm -20 degree, nws cov subgrades yog siv rau ntau qhov chaw huab cua:
P420ML1: Rau daim ntawv thov mus txog -40℃.
P420ML2: Rau kev pabcuam txias txias mus rau -50 degree.
daim ntawv thov mob
1. Qhov kub thiab txias
Siab -Tsub Limit: P420M tuav lub zog txhua yam mus txog 500℃. Txawm li cas los xij, nws yuav tsum tsis txhob siv nyob rau hauv ib puag ncig siab tshaj 580℃-600 degree, vim tias cov cua kub ntau dhau yuav ua rau cov khoom nplua - cov qauv nplej ua tiav thaum lub sij hawm thermomechanical dov.
Tsawg-Tsub Toughness:
P420M: Kev sim rau kev cuam tshuam ntawm -20 degree.
P420ML1 / L2: Yuav tsum muaj rau cov kab mob cryogenic lossis arctic, txhawb kev kub siab mus rau -50 degree.
2. Kev khiav hauj lwm siab
Siab - Kev Pabcuam Kev Nyuaj Siab: Nrog qhov tsawg kawg nkaus tawm lub zog ntawm 420 MPa, nws yog tsim los rau cov cuab yeej ua haujlwm nyob rau hauv qhov tseem ceeb sab hauv lossis sab nraud siab, xws li cov khoom siv roj thiab cov boilers.
Kev Nyab Xeeb Kev Nyab Xeeb: Nws tau xaiv tshwj xeeb thaum lub zog siab - rau - qhov hnyav piv yuav tsum tau txo cov phab ntsa tuab hauv cov nkoj loj - nplai siab.
3. Fabrication & Processing Constraints
Vuam: Zoo weldability vim tsis tshua muaj carbon sib npaug (CEV). Txawm li cas los xij, rau cov thicknesses tshaj 30-40mm, Post-Weld Heat Treatment (PWHT) feem ntau yuav tsum tau ua kom txo qis kev ntxhov siab, feem ntau ua ntawm 530℃thiab 580℃.
Cold forming: Haum rau txias khoov thiab flanging. Yog hais tias txias deformation ntau tshaj 5%, kev kho cua sov ntxiv yuav tsum tau ua kom rov qab ductility.
Kub Txoj Kev: Feem ntau tsis pom zoo vim tias cua sov saum toj no qhov kev hloov pauv kub ua rau cov khoom tau txais los ntawm thermomechanical dov. Yog tias qhov kub kub tsim nyog, cov khoom siv tau zoo dhau los ua cov qib qub (xws li P420NH).
4. Ib puag ncig & tshuaj tiv thaiv
Sour Service: Hauv kev siv roj thiab roj, yog tias cov hlau raug kho kom muaj cov ntsiab lus tsis tshua muaj leej faj, nws tuaj yeem siv rau hauv ib puag ncig uas muaj H₂S (Hydrogen Sulfide) los tiv thaiv Hydrogen Induced Cracking (HIC).
Corrosion: Zoo li feem ntau cov pa roj carbon steel, nws yuav tsum tau txheej txheej sab nraud lossis sab hauv hauv ob sab phlu yog tias raug cov tshuaj corrosive heev lossis ib puag ncig marine.
Yog xav paub ntxiv txog GNEE cov khoom siv hlau, tiv tauj peb ntawm beam@gneesteelgroup.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
Dab tsi yog P420M tsuas yog siv rau hauv cov ntawv thov kev lag luam?
P420M yog cov khoom ua tau zoo - cov khoom siv dav siv hauv kev lag luam xws li kev tsim khoom siv tshuab, tshuab tshuab engineering thiab nws pib qhov chaw. Nws muaj lub zog zoo heev thiab hnav tsis kam, haum rau cov khoom nyob rau hauv siab load thiab hnyav ua haujlwm.
Dab tsi yog cov khoom tseem ceeb ntawm P420M?
Cov khoom tseem ceeb ntawm P420M muaj xws li lub zog tensile siab, zoo yield zog thiab toughness. Nws kuj tseem muaj qhov ua tau zoo ntawm kev qaug zog thiab kev cuam tshuam, ua kom muaj kev ruaj ntseg hauv kev ua haujlwm ntev - lub sijhawm thiab hnyav - lub luag haujlwm.
Puas yog P420M corrosion-resistant?
P420M muaj qhov nruab nrab corrosion tsis kam mus rau huab cua thiab ib puag ncig tshuaj lom neeg. Rau hnyav corrosive tej yam kev mob zoo li muaj zog acids los yog alkalis, ntxiv los tiv thaiv - kev kho corrosion xws li txheej los yog galvanizing yog pom zoo kom ncua nws cov kev pab cuam lub neej.
Lub melting point ntau ntawm P420M yog dab tsi?
Lub melting point ntau ntawm P420M yog feem ntau ntawm 1450℃thiab 1500 degree. Qhov siab melting point no ua rau nws haum rau siab -kub ua haujlwm thiab cov ntawv thov uas nws yuav raug kub hnyiab tau rau lub sijhawm luv.
P420M puas tuaj yeem txuas tau yooj yim?
P420M tuaj yeem txuas nrog cov txheej txheem tsim nyog thiab cov ntaub ntawv. Nws raug nquahu kom siv cov vuam electrodes sib txuam thiab preheat cov khoom ua ntej vuam kom txo cov kev ntxhov siab sab hauv thiab tsis txhob muaj cov kab nrib pleb hauv qhov sib koom ua ke.
Cov txheej txheem ua li cas thiaj haum rau P420M?
P420M yog sib xws nrog ntau yam kev ua, suav nrog forging, dov, machining (tig, milling, drilling) thiab kev kho cua sov. Nws zoo machinability tso cai rau meej shaping rau hauv complex Cheebtsam rau industrial siv.
Dab tsi yog qhov ceev ntawm P420M?
Qhov ceev ntawm P420M yog kwv yees li 7.85 g / cm³, uas zoo ib yam li cov pa roj carbon ntau thiab tsawg- alloy steels. Qhov ceev no ua kom muaj kev ruaj ntseg zoo thiab thauj khoom -cov kabmob muaj peev xwm hauv kev siv.
Cov txheej txheem kho cua sov dab tsi yog P420M haum rau?
P420M yog tsim rau cov txheej txheem kho cua sov xws li quenching thiab tempering. Quenching txhim khu nws hardness thiab lub zog, thaum tempering txhim kho toughness thiab txo brittleness, optimizing nws tag nrho cov neeg kho tshuab kev ua tau zoo.
Puas yog P420M haum rau kev ua cov khoom siv tsheb?
Yog lawm, P420M yog qhov tsim nyog rau kev ua cov khoom siv tsheb. Nws lub zog zoo heev, hnav tsis kam thiab cuam tshuam ua haujlwm raws li qhov yuav tsum tau muaj ntawm cov khoom tseem ceeb xws li lub zog, qag thiab chassis Cheebtsam, ua kom muaj kev nyab xeeb thiab txhim khu kev qha.
Qhov txawv ntawm P420M thiab P420 steel yog dab tsi?
Qhov sib txawv tseem ceeb ntawm P420M thiab P420 steel yog nyob rau hauv cov ntsiab lus impurity thiab mechanical uniformity. P420M muaj qhov tsis zoo tsis zoo, ua kom tawv nqaij zoo dua thiab ua haujlwm ruaj khov, ua rau nws haum rau ntau dua -xav tau kev lag luam.