Txheej txheem cej luam: Dab tsi yog 1.8905?
1.8905yog tus qauv European (EN) tsim rau ib qib tshwj xeeb ntawmzoo-grained, siab- tawm lub zog, thermomechanically dov hlau. Nws feem ntau yog siv rau hauv cov khoom siv dag zog thiab cov qauv hauv ntug dej hiav txwv.
Cov txheej txheem feem ntau thiab muaj feem cuam tshuam rau boiler thiab siab hlab ntsha cov kav dej ua los ntawm cov khoom siv no yogTS EN 10216-2: Seamless steel raj rau lub hom phiaj siab - Kev xa tawm cov xwm txheej - Ntu 2: Cov hlau tsis muaj hlau thiab hlau alloy nrog cov khoom ntsuas kub siab.
Hauv cov qauv no, qib sib npaug steel yogP355 NH.
Cov yam ntxwv tseem ceeb & tshuaj muaj pes tsawg leeg
Cov hlau no yog engineered rau zoo heev toughness thiab weldability, tshwj xeeb tshaj yog nyob rau hauv thicker seem.
1. Chemical Composition (Kwv yees, raws li EN 10216-2 rau P355NH):
| Element | Cov ntsiab lus (%) |
|---|---|
| Cov pa roj carbon (C) | max . 0.20 |
| Silicon (Si) | max . 0.60 |
| Manganese (Mn) | max . 1.70 |
| Phosphorus (P) | max . 0.030 |
| Sulfur (S) | max . 0.025 |
| Nitrogen (N) | max . 0.012 |
Key Feature: Fine Grain Structure.Cov hlau yog "Normalized" (tus "N" hauv P355NH), txhais tau tias nws yog cua sov- kho kom tsim tau ib qho zoo, zoo -grained microstructure. Qhov no yog qhov tseem ceeb rau:
Zoo ntswj toughness (tiv taus rau brittle puas).
Cov khoom siv sib xyaw ua ke thoob plaws hauv cov yeeb nkab phab ntsa.
2. Mechanical Properties (ntawm chav tsev kub):
| Khoom | Tus nqi |
|---|---|
| Yield zog (ReH min) | 355 MPa (Qhov no yog qhov "355" los ntawm) |
| Tensile zog (Rm) | 470 - 630 MPa |
| Elongation (A) | min . 20% |
3. Cov Cuab Yeej Kub Siab:
Qhov no yog qhov tseem ceeb rau kev siv boiler. P355NH / 1.8905 khaws ib feem tseem ceeb ntawm nws lub zog ntawm qhov kub thiab txias.
Yam tsawg kawg Yield Strength ntawm 300 degree:~ 255 MPa
Yam tsawg kawg yield zog ntawm 350 degree:~ 225 MPa
(Cov txiaj ntsig no tau teev tseg hauv EN 10216-2 tus qauv rau kev tsim qauv).
Cov ntawv thov siv
Cov kav dej ua los ntawm 1.8905 (P355NH) yog siv rau hauv cov ntawv thov qhov siab, qhov kub thiab txias, thiab kev nyab xeeb yog qhov tseem ceeb:
Boiler Systems:Rau ob qho tib si superheater thiab evaporator raj.
Cov nkoj siab:Rau kev tsim cov plhaub, nruas, thiab headers.
Kub Exchangers thiab Condenser.
Industrial Piping:Rau siab - kub thiab siab - kev pabcuam siab hauv cov nroj tsuag tshuaj thiab petrochemical.
Offshore thiab Marine Applications:Rau cov khoom siv uas xav tau lub zog siab thiab zoo toughness nyob rau hauv qhov chaw txias.
Qib sib npaug hauv Lwm Cov Qauv
1.8905 / P355NH yog qib European ntau heev, thiab nws muaj qhov sib npaug sib npaug hauv lwm cov qauv thoob ntiaj teb loj.
| Txuj | Qib sib npaug | Nco tseg |
|---|---|---|
| ISO 9328-2 | P355 NH | Direct thoob ntiaj teb sib npaug. |
| ASTM A335 / A335M / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335M / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335 / ASTM A335) thiab ASTM A335M | P11 | Kev sib tw ze dua ntawm chrome-moly alloy, tab sis P11 muaj cov ntsiab lus hlau ntau dua. Rau carbon steel, saib hauv qab no. |
| ASTM A106 / A53 | Qib B | Qhov no yog qhov ntau tshajcarbon hlaucev. Thaum siv rau siab thiab siab -temp, A106 Gr B muaj lub zog qis dua (240 MPa) thiab tsis zoo li qub. |
| TIAB SA 17175 | ib 35.8 | Ib hom German qauv rau siab -cov kav dej kub. |
| JIS G3462 | TIAB SA 370 | Japanese txuj rau boiler thiab tshav kub exchanger raj. |
Lus Cim Tseem Ceeb:ThaumASTM A106 Qib Byog cov yeeb nkab carbon steel ntau heev rau siab -kev pabcuam kub, nws yogtsis yog ib tug direct hloovrau 1.8905/P355NH. P355NH muaj lub zog ntau dua thiab lav qhov cuam tshuam rau lub zog vim nws qhov kev ua haujlwm zoo, ua rau nws tsim nyog rau cov ntawv thov tseem ceeb dua.
Qhov zoo ntawm kev siv 1.8905 Boiler Pipe
Siab zog:Qhov tsawg kawg nkaus 355 MPa lub zog tso cai rau cov kav dej nyias nyias ntawm tib lub siab ntsuas, txuag qhov hnyav thiab cov khoom siv.
Weldability zoo heev:Cov ntsiab lus tsis tshua muaj carbon tsawg thiab cov qauv zoo ua rau nws yooj yim rau vuam yam tsis muaj ua ntej - lossis tshaj tawm - vuam kev kho cua sov feem ntau.
Zoo Toughness:Resistant rau brittle puas, uas yog ib qho tseem ceeb rau kev nyab xeeb nyob rau hauv lub tshuab pressurized.
Kev ua tau zoo ntawm Kev Kub Kub Kub:Tshwj xeeb tsim thiab sim ua raws li kev thauj mus los ntawm qhov kub siab.
Cov ntsiab lus
Thaum koj pom"1.8905 Carbon Steel Boiler Hlau Yeeb",koj saib ahigh-zoo, normalized, zoo-cov yeeb nkab steel hlauua raws li European qauv (feem ntau yuavEN 10216-2 raws li P355NH). Nws tau teev tseg rau cov ntawv thov tseem ceeb hauv boilers, cov hlab ntsha siab, thiab siab -cov kav dej kub qhov twg lub zog, weldability, thiab lav qhov cuam tshuam toughness tsis yog - qhov yuav tsum tau sib tham.
Rau kev yuav khoom lossis tsim qauv, nco ntsoov xa mus rau tag nrho, cov ntaub ntawv pov thawj cov ntaub ntawv xeem thiab cov qauv tshwj xeeb (xws li EN 10216-2) kom ntseeg tau tias txhua yam yuav tsum tau ua.
