P245 NIB(Cov Khoom Naj Npawb 1.0111) yog ib qho tsis yog- alloy, weldable zoo steel txhais raws li EN 10120, tshwj xeeb yog tsim los rau kev tsim cov welded gas cylinders thiab cov hlab ntsha siab, feem ntau siv hauv thicknesses txog Smm. Nws nta qhov tsawg kawg nkaus lub zog ntawm 255MPa.
Lub npe "P245NB" tawg raws li hauv qab no:
• P: Lub hom phiaj siab.
• 245: Tsawg tshaj tawm lub zog ntawm 245 MPa.
• N: Normalized (los yog tsim los ntawm normalizing dov).
• B: Qhia meej rau lub tog raj kheej roj (hauv qee cov qauv) lossis tsuas yog qib sib txawv.
P245NB steel hlau
Tshuaj muaj pes tsawg leeg ntawm P245NB steel
Cov tshuaj muaj pes tsawg leeg ua kom zoo weldability thiab ductility thaum tuav lub zog ntawm qhov kub siab.
| keeb | C | Si | Mn | P | S | Al | Nb | Ti | N |
|---|---|---|---|---|---|---|---|---|---|
| P245 NIB | 0.16 | 0.25 | 0.30 | 0.025 | 0.015 | Ntau dua lossis sib npaug rau 0.020 | 0.05 | 0.03 | 0.009 |
Cov pa roj carbon tsawg, tsawg phosphorus thiab sulfur, thiab micro-alloying (Nb/Ti/Al rau grain refinement) ua kom cov yas zoo, siab tawv, thiab weldability zoo heev.
Mechanical Properties ntawm P245NB steel
Ntawm chav tsev kub, P245NB nthuav tawm cov yam ntxwv hauv qab no:
| Khoom | Tus nqi |
| Yield zog (Re) |
Ntau dua lossis sib npaug245 MPa rau |
| Tensile zog (Rm) | 390-530 MPa |
| Elongation (A5) |
Ntau dua lossis sib npaug23% |
| Impact Zog (KV) | 27 J (ntawm -20 degree) lossis 40 J (ntawm 0 degree) |
Lub zog tawm los txo qis thaum qhov kev ua haujlwm kub nce (ib qho tseem ceeb rau boiler thiab lub nkoj siab tsim).
Cov yam ntxwv tseem ceeb ntawm P245NB steel
Zoo heev Cold Formability
Raws li qib nrog qis zog nyob rau hauv tus qauv EN10120, qhov tseem ceeb ntawm P245NB yog nyob rau hauv siab ductility thiab zoo heev txias ua hauj lwm formability. Nws cov qauv tsim tau zoo sib xws nrog cov txheej txheem txias txias xws li kev sib sib zog nqus nqus, dov thiab khoov ntawm lub tog raj kheej roj, uas tuaj yeem ua tiav yam tsis muaj siab - kub preheating, zoo txo cov khoom siv hluav taws xob thiab cov khoom seem.
Cov ntaub ntawv tseem ceeb: Raws li qhov yuav tsum tau muaj ntawm EN10120 tus qauv, elongation tom qab tawg (A₅) ntawm P245NB ntawm chav tsev kub yuav tsum ua rawsNtau dua lossis sib npaug li 26% thaum t<3mm and ≥34% when t≥3mm(t yog lub thickness ntawm steel phaj), uas yog ntau dua li qhov yuav tsum tau elongation ntawm zoo tib yam structural steel (feem ntau ntau tshaj los yog sib npaug rau 20%), nrog txaus ductility cia.
Nyob rau tib lub sijhawm, nws lub zog tawm los yog tswj hwm ntawm 245-355MPa, nrog lub zog nruab nrab, uas tsis yooj yim rau kev tsim cov teeb meem xws li tawg, wrinkling thiab ntau lub caij nplooj ntoos hlav thaum lub caij txias txias, thiab muaj kev sib sau ua tau zoo.
|
Hlau Phaj Thickness t (mm) |
Elongation Tom Qab Fracture A₅ (%) Ntau dua lossis sib npaug |
Yield zog ReH (MPa) |
Tsim cov txheej txheem txias txias |
Forming Defect Rate (Reference Value) |
|
1.5-3.0 |
26 |
245-355 |
Sib sib zog nqus kos duab, spinning, dabtsi yog khoov |
Tsawg dua lossis sib npaug li 0.5% |
|
3.0-8.0 |
34 |
Rolling, Khoov, Stamping |
Rolling, Khoov, Stamping |
Tsawg dua lossis sib npaug li 0.3% |
Daim Ntawv Thov Kev Pom Zoo: Nws tuaj yeem ua tiav qhov kev sib xyaw ua ke ntawm lub tog raj kheej dov thiab lub taub hau sib sib zog nqus ntawm lub tog raj kheej LPG (thickness 3.0-5.0mm). Tom qab tsim, lub tog raj kheej roundness yuam kev tsawg dua los yog sib npaug ntawm 0.8mm / m, uas ua tau raws li qhov tseeb qhov tseeb ntawm lub tog raj kheej tsim cov roj thiab tsim rau tsis siv neeg nruam tsim cov kab ntau lawm.
Zoo Weldability Ntawm P245NB Steel
Weldability zoo heev
P245NB txais yuav qhov nrujqis- carbon tsim, ua ke nrog tsawg phosphorus thiab sulfur tswj thiab microalloying optimization, nrog zoo weldability. Siab - lub zog thiab siab -tuaj yeem welded pob qij txha tuaj yeem tau txais yam tsis muaj kev ua ntej ua ntej lossis tom qab-weld kev kho cua sov, uas ua tau raws li cov qauv kev nyab xeeb ntawm cov welded gas cylinders (lub zog thiab toughness yuav tsum tau ntawm welded pob qij txha hauv EN10120).
Cov ntsiab lus carbon ntawm P245NB tsawg dua lossis sib npaug li 0.16%, carbon sib npaug (CEV) tsawg dua lossis sib npaug li 0.38%, phosphorus tsawg dua lossis sib npaug li 0.025%, thiab sulfur tsawg dua lossis sib npaug li 0.015%. Cov ntsiab lus ntawm cov khoom tsis zoo yog qhov tsawg heev, uas yog qhov tseem ceeb txo qhov kev sib tw hardening thiab txias tawg tsam ntawm tshav kub - cuam tshuam cheeb tsam (HAZ) thaum vuam.
Tom qab vuam, qhov nyuaj ntawm lub tshav kub- thaj tsam cuam tshuam tsawg dua los yog sib npaug rau 220HB, uas zoo sib xws nrog lub hauv paus hlau hardness (130-}170HB). Lub zog tensile ntawm cov welded sib koom yog ntau dua los yog sib npaug rau 360MPa, uas yog raws li lub hauv paus hlau tensile lub zog (360-450MPa), thiab kev sib koom ua ke elongation yog ntau dua los yog sib npaug rau 24%, xyuas kom meej tias qhov welded tsis poob nyob rau hauv lub sij hawm ntev.
|
Yam khoom |
Standard Requirement/Measured Value |
Kev piav qhia |
|
Cov ntsiab lus carbon (C) |
Tsawg dua lossis sib npaug li 0.16% (Tsuas Tsawg dua lossis sib npaug li 0.15%) |
Tsawg- carbon tsim kom txo cov vuam tawv tawv |
|
Carbon Equivalent (CEV) |
Tsawg dua lossis sib npaug li 0.38% |
Tsis xav tau preheating rau vuam thaum CEV Tsawg dua los yog sib npaug rau 0.40% |
|
Weld Thaum tshav kub kub-Affected Zone (HAZ) Hardness |
Tsawg dua lossis sib npaug rau 220HB |
Tsis txhob HAZ embrittlement thiab tiv thaiv kev tawg tiam |
|
Welded Joint Tensile Lub zog |
Ntau dua lossis sib npaug li 360MPa |
Matched nrog lub hauv paus hlau lub zog kom ntseeg tau kev sib koom ua ke |
|
Cov txheej txheem vuam tsim nyog |
Resistance Vuam, Arc Vuam, Submerged Arc Vuam |
Tsim nyog rau cov khoom siv hluav taws xob loj hauv lub tog raj kheej vuam nrog kev ua haujlwm siab vuam |
Zoo-Ntsuab Toughness
P245NB ua tiav qhov ruaj khov zoo- cov qauv nplej los ntawm kev ntxiv cov khoom siv microalloying xws li txhuas, niobium thiab titanium, ua ke nrog cov txheej txheem tswj dov thiab normalizing cov txheej txheem, uas txhim kho qhov qis -kub toughness thiab cuam tshuam tsis kam ntawm cov khoom.
Cov qauv zoo - cov qauv nplej tuaj yeem tiv thaiv kev tawg thiab kev nthuav tawm, thiab tseem tuav tau zoo ductility thiab toughness nyob rau hauv qis - qhov kub thiab txias los yog cuam tshuam rau lub sijhawm thauj khoom, tsis txhob muaj kev pheej hmoo ntawm kev tawg, uas ua tau raws li kev ruaj ntseg toughness ntawm steel rau welded gas cylinders hauv EN10120.
Raws li EN10120 tus qauv, qhov cuam tshuam lub zog (KV) ntawm P245NB ntawm -20℃siab dua lossis sib npaug rau 27J, thiab cov nplej loj yog tswj ntawm qib 6 lossis finer (raws li GB / T 6394-2017 tus qauv). Cov qauv nplua-grain tsis tsuas yog txhim kho cov tawv tawv, tab sis kuj tseem ua kom zoo dua qub ntawm cov khoom siv, ua rau cov khoom siv hluav taws xob ntawm txhua qhov ntawm lub tog raj kheej roj zoo ib yam, zam kev ua haujlwm tsis muaj zog hauv zos.
|
Yam khoom |
Standard Requirement/Measured Value |
Qhov tseem ceeb |
|
Loj Loj |
Qib 6 lossis Finer |
Txhim kho toughness thiab tiv thaiv brittle puas |
|
Impact Zog KV (-20 degree) |
Ntau dua lossis sib npaug rau 27J (Tsib Ntau dua lossis sib npaug rau 32J) |
Xyuas kom qis -kub toughness thiab cuam tshuam tsis kam |
|
Microalloying Elements |
Al Ntau dua lossis sib npaug rau 0.020%, Nb Tsawg dua lossis sib npaug rau 0.05%, Ti Tsawg dua lossis sib npaug rau 0.03% |
Txhim kho cov nplej thiab stabilize cov khoom ua haujlwm |
|
Delivery Status |
Normalized (N) lossis Tswj Rolling Normalized |
Xyuas kom ruaj khov zoo - cov qauv nplej thiab kev ua haujlwm zoo |
Qib sib npaug ntawm P245NB steel
P245NB yog lub npe European. Nyob ntawm lub teb chaws lossis daim ntawv thov tshwj xeeb (tubes vs. phaj), nws qhov sib npaug yog:
| Txuj | Qib sib npaug |
| ASTM / ASME (USA) | ASTM A106 Qib B / A516 Qib 60 |
| DIN (Lub teb chaws Yelemees) | Txoj Kev 41.8 / DIN 17175 |
| JIS (Nyiv) | STPG 370 / SG 255 |
| GB (Tuam Tshoj) | 20G / Q245R |
| AFNOR (Fabkis) | TSI 42 C |
| UNI (Ltalis) | C20 |
Cov ntawv thov siv
- Lub nkoj siab:Kev tsim cov tso tsheb hlau luam thiab cov boilers uas tuav cov pa roj los yog cov kua dej hauv siab.
- Gas Lub tog raj kheej:Tshwj xeeb yog siv rau seamless gas cylinders.
- Roj thiab Roj:Cov kav dej rau kev thauj cov kua dej kub.
- Kev tsim hluav taws xob:Heat exchanger tubes thiab chav headers.
- Kev lag luam tshuaj:Cov khoom siv rau kev ua cov nroj tsuag ua haujlwm ntawm qhov nruab nrab kub.
Hu rau tam sim no kom tau txais kev pov npav
P245NB steel qib yog dab tsi?
P245NB yog ib qho qis- carbon nplua- cov hlau tsis muaj hlau tshwj xeeb tsim los rau cov welded gas cylinders, ua raws li European EN 10120 tus qauv. Nws yog qib siab ntawm cov hlab ntsha nrog zoo heev txias formability, weldability thiab zoo - nplej toughness, dav siv nyob rau hauv lub tsim ntawm tsawg- siab gas cia ntim.
P245NB ua raws li tus qauv dab tsi?
P245NB nruj me ntsis raws li EN 10120 tus qauv, uas yog European tus qauv rau "Steel sheet thiab sawb rau welded gas cylinders". Cov qauv no qhia txog cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, cov khoom xa tuaj thiab cov kev xav tau zoo ntawm cov hlau siv rau welded gas cylinders.
Tus lej khoom (W.Nr.) ntawm P245NB yog dab tsi?
Cov ntaub ntawv naj npawb (Werkstoffnummer) ntawm P245NB yog 1.0111, uas yog tus qauv German siv los txheeb xyuas cov qib steel no hauv cov ntawv thov kev lag luam.
Dab tsi yog "P245NB" sawv cev rau EN 10120?
Txhua tsab ntawv thiab tus lej hauv P245NB muaj lub ntsiab lus tshwj xeeb: "P" sawv cev rau Siab (kev thov siab), "245" sawv cev rau qhov tsawg kawg nkaus tawm lub zog ntawm 245 MPa, "N" txhais tau tias Normalized (normalized los yog normalized dov), thiab "B" qhia Fine grain (zoo - cov qauv nplej kom ntseeg tau tias vuam toughness).
Puas yog P245NB lub nkoj siab hlau?
Yog lawm, P245NB yog lub nkoj siab steel. Nws yog tsim tshwj xeeb rau kev tsim cov welded gas cylinders thiab qis - cov hlab ntsha siab, thiab nws cov khoom siv kho mob thiab cov kev xav tau zoo ua tau raws li cov qauv kev nyab xeeb rau siab - cov khoom siv bearing.
