P355N Carbon Steel Boiler Steel Yeeb Nkab Kev Qhia Tshwj Xeeb
P355N yog cov pa roj carbon monoxide-manganese steel tshwj xeeb tsim los rau lub hom phiaj siab, dav siv hauv boiler kev tsim kho thiab siab - siab piping systems. Cov ntaub ntawv no tau txhais raws li EN 10216-2 tus qauv.
Txheej txheem cej luam
P355N steel yog ib qho tsis yog - alloy zoo steel nrog txhim kho toughness zog vim nws cov kev kho cua sov li qub. Tus "P" qhia txog nws daim ntawv thov rau lub hom phiaj siab, "355" yog hais txog qhov tsawg kawg nkaus tawm lub zog hauv MPa, thiab "N" qhia txog qhov ua tau zoo.
Tshuaj muaj pes tsawg leeg
Cov tshuaj muaj pes tsawg leeg ntawm P355N steel yeeb nkab yog nruj me ntsis tswj los xyuas kom meej txhua yam khoom thiab weldability.
| Element | Kev sib xyaw (%) | Sau ntawv |
|---|---|---|
| Cov pa roj carbon (C) | Max 0.20 | Tsawg carbon txhim kho weldability |
| Silicon (Si) | Max 0.40 | Deoxidizing tus neeg sawv cev |
| Manganese (Mn) | 1.10 - 1.70 | Ua kom muaj zog thiab toughness |
| Phosphorus (P) | Max 0.025 | Impurity, tswj los tiv thaiv brittleness |
| Sulfur (S) | Max 0.015 | Impurity, tswj kom tsis txhob kub luv luv |
| Aluminium (Al) | Min 0.020 | Grain refiner (yog tias muaj) |
Nco tseg: Cov ntsiab lus microalloying ntxiv xws li Nb, V, lossis Ti tuaj yeem raug ntxiv rau cov nqi tsawg.
Mechanical Properties
Kev kho cua sov zoo li qub muab P355N steel nws tus yam ntxwv sib npaug ntawm lub zog thiab tawv.
| Khoom | Tus nqi | Kev kuaj mob |
|---|---|---|
| Yield zog (min) | 355 MPa rau | Nyob rau hauv chav tsev kub |
| Tensile zog | 470-630 MPa | Nyob rau hauv chav tsev kub |
| Elongation (min) | 22% | Ntawm qhov ntsuas qhov ntev 5.65√S₀ |
| Lub zog cuam tshuam (min) | 40 J | At -20°C for thickness >16 hli |
Txheem Specifications
| Txuj | Title | Daim ntawv thov |
|---|---|---|
| TS EN 10216-2 | Seamless steel raj rau lub hom phiaj siab | Thawj specification |
| TS EN 10217-2 | Welded steel raj rau siab lub hom phiaj | Rau welded variants |
| ASME SA-106 | Standard specification rau seamless carbon steel yeeb nkab | Lwm yam specification |
| ASTM A335 Cov Lus Qhia Tshwj Xeeb | Txheem specification rau seamless ferritic alloy- steel yeeb nkab | Rau siab -kev pabcuam kub |
Daim ntawv thov
P355N steel kav yog tsim tshwj xeeb rau:
Boiler systems- Chav boilers, kub exchangers
Cov hlab ntsha siab- Cia tank, reactors
High -kub kav- Superheated chav kab
Cov nroj tsuag tsim hluav taws xob- Pa thiab nuclear
Petrochemical kev lag luam- Txheej txheem kav
Kev tsim khoom
Cov kav dej yog tsim los ntawm:
Seamless txheej txheem: Kub tho thiab elongation
Welded txheej txheem: sib sau thiab longitudinal vuam
Kev kho cua sov li qub: Ua kom sov li ntawm 900℃thiab cua sov-txias
Tsis yog-kev kuaj kev puas tsuaj: Ultrasonic, radiographic, lossis eddy kev kuaj tam sim no
Qhov zoo ntawm P355N Steel Pipes
Lub zog zoo heev - rau - qhov hnyav piv
Zoo weldabilitytsis preheating rau feem ntau thicknesses
Txhim kho toughnessntawm qhov kub thiab txias
Zoo creep kujntawm qhov kub thiab txias
Tus nqi- zoopiv rau alloy steels
Sib piv nrog Cov Qib Zoo sib xws
| Qib | Yield zog (MPa) | Qhov xwm txheej | Qhov txawv tseem ceeb |
|---|---|---|---|
| P355N | 355 | Li qub | Standard boiler zoo |
| P265GH | 265 | Raws li dov | Tsawg zog, pheej yig dua |
| P460 NH | 460 | Li qub | Siab zog, alloyed |
P355N sawv cev rau qhov sib npaug zoo ntawm tus nqi, lub zog, thiab lub zog rau nruab nrab mus rau siab - cov ntawv siv boiler siab, ua rau nws nyiam xaiv hauv kev tsim hluav taws xob thiab cov tshuab boiler.
