P420M yog ib lub siab -lub zog, zoo- cov nplej hlau tshwj xeeb tsim los siv rau hauvsiab hlab ntsha thiab boilers, tsim nyob rau hauv cov qauv EuropeanTS EN 10028-5.
Ntsiab Specifications
Lub npe:Tus "P" sawv cev rau kev siv siab, "420" yog hais txog qhov tsawg kawg nkausyield zogntawm 420 MPa, thiab "M" qhia tias nws yog xa hauv athermomechanically dov(+M) mob.
Tus lej ID:Nws European steel tooj yog1.8826.
Khoom:Nws nta zoo heevweldabilitythiab toughness, nrog cov tshuaj muaj pes tsawg leeg feem ntau txwv rau qhov sib npaug ntawm cov pa roj carbon tsawg (CEV Tsawg dua lossis sib npaug ntawm 0.45) txhawm rau tiv thaiv kev tawg thaum lub sijhawm vuam.
|
TS EN 10028-5 P420MTshuaj muaj pes tsawg leeg |
|||||||
|
Qib |
Cov ntsiab lus Max (%) |
||||||
|
C |
Si |
Mn |
P |
S |
Al |
N |
|
|
P420M |
0,16 |
0,50 |
1,70 |
0,025 |
0,020 |
0,020 |
0,020 |
|
Nb |
V |
Ti |
Ni |
Mo |
|
|
|
|
0,05 |
0,10 |
0,05 |
0,50 |
0,20 |
|
|
|
|
Qib |
P420MM Mechanical Property |
|||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
P420M |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
6-16 |
420 |
500-660 |
19% |
|
|
16-40 |
400 |
500-660 |
19% |
|
|
40-63 |
390 |
500-660 |
19% |
|
Variant Qib
Rau qhov xav tau ntawm qhov kub thiab txias, cov subgrades uas tau teev tseg qis - qhov kub thiab txias yog siv:
P420ML1:Impact kuaj mus rau-40 degree.
P420ML2:Impact kuaj mus rau-50 degree.
core applications
1. Roj, Roj & Petrochemical
Lub Hwj Chim Siab: Kev tsim cov reactors, cais, thiab txhua kab siv los ua cov kua dej tsis haum.
Spherical Storage Tanks: Loj - teev cia rau Liquefied Petroleum Gas (LPG) lossis ammonia, qhov twg P420M lub zog siab tso cai rau cov phab ntsa nyias, sib dua yam tsis muaj kev nyab xeeb.
2. Kev tsim hluav taws xob & lub zog
Boiler Drums: Ua haujlwm ua lub hauv paus siab -siab tivthaiv hauv thermal fais fab nroj tsuag los sau thiab faib chav.
Hydropower Penstocks: Fabrication ntawm siab - siab conduits uas nqa dej los ntawm reservoir mus rau turbines nyob rau hauv lub gravitational siab loj heev.
3. Kev lag luam tshuaj
Thaum tshav kub kub Exchangers: Siv raws li cov txheej txheem plhaub rau cov khoom siv hloov cov cua sov ntawm ob los yog ntau tshaj kua nyob rau hauv lub siab.
Txheej Txheem Tank: Cov tso tsheb hlau luam nyob ruaj ruaj siv rau qhov nruab nrab cia cov tshuaj thaum lub sijhawm ua kom zoo lossis tsim khoom.
4. Tsawg-Tsub Logistics
Cryogenic / Arctic Cia: Siv cov subgrades P420ML1 thiab P420ML2 rau cov cuab yeej ua haujlwm hauv qhov txias txias (txog -50 degree), xws li cov kav dej thiab tso tsheb hlau luam hauv Siberian lossis thaj chaw sab nraud.
Pressurized Rail Tsheb: Kev tsim cov tank rau cov tsheb thauj khoom thauj cov dej txaus ntshai lossis cov kua dej ntau dhau ntawm cov huab cua sib txawv.
5. Heavy Industrial Cog
Cov Cheebtsam rau Steel / Cement Mills: Cov qauv ntawm cov cub tawg lossis cov chaw ua haujlwm uas ua haujlwm hauv cov khoom siv tshuab siab thiab ua haujlwm siab.
Kev tsim cov txheej txheem ntawm P420M Steel
Ua raws li Thermo-Mechanical Controlled Process (TMCP)
P420M yog tsim los ntawm TMCP raws li European tus qauv EN 10028-5. Cov txheej txheem sib xyaw ua ke tswj dov thiab tswj cov cua txias kom meej meej tswj cov hlau microstructure, tshem tawm qhov xav tau rau kev kho mob tom ntej.
Tswj Rolling rau Grain Refinement
Lub steel yog rhuab mus rau ib tug tshwj xeeb kub thiab dov nrog nruj me ntsis tswj tsis mus refine grain loj. Qhov no optimizes qhov sib npaug ntawm lub zog thiab toughness, lav qhov tsawg kawg nkaus lub zog ntawm 420MPa.
Thickness -Raws li Kev Ua Haujlwm Pabcuam
Preheating ntawm 80-120℃yog yuav tsum tau thaum lub sij hawm ua rau daim hlau tshaj 20mm tuab. Rau cov phaj siab tshaj 50 hli, xaiv qhov kev ntxhov siab nyem annealing ntawm 550-600℃tuaj yeem ua kom tshem tawm kev ntxhov siab sab hauv.
Strict Chemical Composition Control
Tag nrho cov txheej txheem tswj hwm nruj tswj cov tshuaj muaj pes tsawg leeg, nrog cov ntsiab lus carbon tsawg dua lossis sib npaug li 0.16% thiab carbon sib npaug tsawg dua lossis sib npaug li 0.43%. Qhov no zoo heev txhim kho qhov weldability ntawm P420M steel, ua tau raws li qhov yuav tsum tau ua ntawm cov khoom siv lub nkoj siab.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
P420M puas tuaj yeem siv rau hauv siab - cov cuab yeej siv siab?
P420M tuaj yeem siv rau hauv qee qhov siab - cov cuab yeej siv siab tom qab kev sim nruj thiab ntawv pov thawj. Nws lub zog tensile siab thiab lub zog tawm los ua kom nws tuaj yeem tiv taus qee yam kev ntxhov siab, tab sis nws yuav tsum ua raws li cov qauv kev lag luam thiab cov cai tswj kev nyab xeeb.
Dab tsi yog qhov hardness ntawm P420M tom qab kev kho cua sov?
Tom qab quenching thiab tempering, lub hardness ntawm P420M tuaj yeem ncav cuag 220-260 HB. Qhov kev sib tw hardness no sib npaug lub zog thiab toughness, ua rau nws haum rau cov khoom uas yuav tsum tau hnav tsis kam thiab cuam tshuam.
Puas yog P420M yog ib qho qis- hlau alloy?
Yog lawm, P420M yog ib qho qis- alloy steel. Nws muaj ib qho me me ntawm cov ntsiab lus alloying xws li manganese, silicon thiab chromium, uas txhim kho nws cov cuab yeej cuab tam piv rau cov pa roj carbon zoo tib yam yam tsis muaj nqi ntau lawm.
Lub zog tawm los ntawm P420M yog dab tsi?
Qhov tsawg kawg nkaus tawm lub zog ntawm P420M yog 420 MPa, uas yog lub hauv paus ntawm nws cov qauv npe. Qhov kev ua tau zoo no ua kom ntseeg tau tias cov khoom tuaj yeem tiv taus deformation nyob rau hauv kev thauj khoom, ua rau nws zoo tagnrho rau hnyav -cov haujlwm ua haujlwm.
P420M puas tuaj yeem siv rau huab cua txias?
P420M muaj qhov tsis zoo - qhov kub thiab txias, yog li nws tuaj yeem siv rau hauv huab cua txias (feem ntau siab dua -20℃). Nws tswj kev ua haujlwm ruaj khov yam tsis muaj pob txha tawg, ua rau nws haum rau cov khoom siv sab nraum zoov hauv thaj chaw txias.
Cov kev kho saum npoo dab tsi tuaj yeem siv rau P420M?
Kev kho saum npoo rau P420M suav nrog kev pleev xim, galvanizing, chrome plating thiab phosphating. Cov kev kho mob no txhim kho corrosion kuj, hnav tsis kam thiab zoo nkauj tsos, ncua cov khoom siv lub neej hauv ntau qhov chaw.
Puas yog P420M rov ua dua?
Yog lawm, P420M yog cov khoom siv rov ua dua tshiab. Raws li cov khoom siv hlau, nws tuaj yeem yaj thiab rov siv dua tom qab rov ua dua tshiab, uas tsis yog tsuas yog txo cov peev txheej pov tseg tab sis kuj txo qis ib puag ncig cov pa phem, ua raws li lub tswv yim ntawm kev tsim ntsuab.
Lub zog tensile ntawm P420M yog dab tsi?
Lub zog tensile ntawm P420M yog li ntawm 540 MPa txog 680 MPa. Lub zog tensile siab no tso cai rau cov khoom siv los tuav lub zog tensile loj, ua rau nws tsim nyog rau cov khoom uas yuav tsum tau tiv thaiv kev rub tawm hauv kev lag luam.
P420M puas tuaj yeem siv los ua cov khoom siv hauv tsev?
Yog lawm, P420M yog siv dav hauv kev tsim kho tshuab. Nws zoo heev hnav tsis kam, lub zog thiab cuam tshuam tsis kam tuaj yeem tiv taus qhov hnyav ua haujlwm ntawm kev tsim kho tshuab xws li excavators thiab loaders.
Cov tshuaj muaj pes tsawg leeg ntawm P420M yog dab tsi?
P420M feem ntau muaj cov pa roj carbon (C: 0.17-0.23%), manganese (Mn: 1.00-1.50%), silicon (Si: 0.15-0.35%), thiab me me ntawm phosphorus (P Tsawg dua lossis sib npaug li 0.035%) thiab sulfur (S tsawg dua 5%).