P355Nyog tus qauv European steel qib feem ntau siv rau cov hlab ntsha siab, boilers, thiab cov kav dej. Nws yog txhais raws li hauv qab noTS EN 10028-3(cov khoom lag luam tiaj tus) thiabTS EN 10216-3(seamless raj) qauv.
Technical Specifications
Khoom siv: 1.0562.
Kev faib tawm:Normalized, weldable, zoo -cov qauv hlau.
Yield zog:Yam tsawg kawg nkaus355 MPa raurau thickness txog li 16 hli. Rau cov seem thicker, lub zog tawm los maj mam txo qis (piv txwv li, ~ 295 MPa rau 100-150mm).
Tensile zog:Feem ntau yog los ntawm490 txog 630 MPa.
Delivery condition: Normalized (+ N), txhais tau tias nws yog cua sov- kho kom zoo dua nws cov qauv nplej, uas txhim kho toughness thiab weldability.
Variants & Subgrades
P355 yog ib feem ntawm tsev neeg steels, txhua qhov optimized rau ib puag ncig sib txawv:
P355N:Standard chav- kub zoo qib.
P355 NH:Qib siab -kub kub, tus cwj pwm los ntawm kev siab zog ntawm qhov kub txog li 500℃.
P355NL1:Tsawg-qib kub, cuam tshuam kuaj ntawm-40 degree.
P355 NL2:Tshwj xeeb qis- qib kub, cuam tshuam kuaj ntawm-50 degree.
Ntsiab nta
Weldability zoo heev:Nws zoo - cov qauv nplej thiab tswj cov ntsiab lus ntawm cov pa roj carbon monoxide tso cai rau kev txhim kho vuam hauv cov haujlwm hnyav.
High Impact Toughness:Cov txheej txheem normalization ua kom muaj kev tiv thaiv rau kev tawg, txawm tias qhov kub thiab txias (P355N feem ntau raug kuaj mus rau -20 degree).
Corrosion Resistance:Nws muaj qhov nruab nrab tsis kam rau kev xeb dav dav, txawm hais tias nws feem ntau kho ntxiv lossis coated rau qhov chaw hnyav.
P335N Cov Khoom Siv Tshuaj:
| Qib | C % | Mn% | S % | N % | Cu% | Nb% | Ti % | Si% | P % | AL% | Cr% | Mo% | Ni% | Vi % |
| P 355 N | 0.10-0.22 | 0.10-1.70 | 0.015 | 0.012 | 0.30 | 0.020 | 0.03 | 0.60 | 0.025 | 0.020 | 0.30 | 0.08 | 0.30 | 0.02 |
P335N Mechanical Properties:
| Qib | Hom | Thickness hli | Yield zog Mpa (min) | Tensile zog MPa | Elongation% (min) | Impact Energy (KVJ) (min) | ||
| -20 degree | 0 degree | +20 | ||||||
| P 355 N | Li qub | t Tsawg dua los yog sib npaug rau 16 | 355 | 510-650 | 20 | 27 | 34 | 40 |
| 16＜t Tsawg dua lossis sib npaug rau 40 | 345 | 510-650 | 20 | 27 | 34 | 40 | ||
| 40＜t Tsawg dua lossis sib npaug rau 60 | 335 | 460-580 | 20 | 27 | 34 | 40 | ||
| 60＜t Tsawg dua lossis sib npaug rau 100 | 315 | 490-630 | 20 | 27 | 34 | 40 | ||
| 100＜t Tsawg dua lossis sib npaug rau 150 | 295 | 480-630 | 20 | 27 | 34 | 40 | ||
| 150＜t Tsawg dua lossis sib npaug li 250 | 280 | 470-630 | 20 | 27 | 34 | 40 | ||
P355N hlau ua
Vuam ua: Txais cov txheej txheem vuam zoo xws li phau ntawv arc vuam, roj hlau arc vuam (GMAW) thiab submerged arc vuam. Preheating feem ntau tsis tas yuav tsum muaj nyob rau hauv qhov kub thiab txias, tab sis preheating mus rau 50-100℃yog pom zoo rau cov workpieces tuab los yog qis- qhov kub thiab txias ib puag ncig los tiv thaiv cov kab nrib pleb. Kev kho cua sov tom qab vuam (PWHT) tuaj yeem ua tau raws li qhov xav tau los tshem tawm cov kev ntxhov siab seem thiab ua kom lub zog ntawm cov khoom sib txuas.
Kev tsim cov txheej txheem: Haum rau ob qho tib si txias sib sau thiab kub sib sau. Cold forming muaj xws li dabtsi yog khoov, stamping thiab dov, uas yuav tsum tau tswj lub sib sau ceev thiab deformation kom tsis txhob muaj cov khoom tawg. Kev sib sau kub yog siv tau rau cov txheej txheem nyuaj, nrog rau qhov zoo tshaj plaws ntawm qhov kub thiab txias ntawm 900-1100 degree, ua raws li cua txias los yog tswj kom txias kom tswj cov khoom zoo-grained qauv thiab toughness.
Kev kho cua sov ua haujlwm: Cov txheej txheem muab lub xeev yog kev kho cua sov zoo li qub- cua sov cov hlau mus rau 890-950 degree, tuav nws rau lub sijhawm txaus los xyuas kom cov cua sov tsis sib xws, tom qab ntawd cua txias. Cov txheej txheem no ua kom zoo dua cov qauv nplej, txhim kho tensile lub zog thiab lub zog tawm los, thiab txhim kho qis - qhov kub thiab txias tsis kam (-20 degree) kom tau raws li cov kev xav tau ntawm cov khoom siv.
Machining Kev Ua Haujlwm: Tau tshaj cov pa machining txoj kev xws li tig, milling, drilling thiab npaj. Cov khoom muaj nruab nrab hardness thiab zoo txiav kev ua tau zoo; xaiv siab -cov cuab yeej ceev steel lossis cemented carbide, thiab phim cov cuab yeej txiav tsim nyog (txiav ceev, pub tus nqi) kom txo tau cov cuab yeej siv thiab ua kom cov khoom raug thiab ua tiav.
Kev kho deg: Tom qab ua tiav, kev kho saum npoo yuav tsum tau tiv thaiv corrosion. Cov txheej txheem muaj xws li derusting (shot blasting, pickling), phosphating thiab painting. Rau qhov chaw ua haujlwm sab nraum zoov lossis qhov chaw ntub dej, tiv thaiv - cov coatings nrog cov adhesion siab thiab huab cua tiv thaiv tau pom zoo kom txuas ntxiv lub neej kev pab cuam ntawm cov khoom ua tiav.
Vim li cas thiaj xaiv peb:
Koj tuaj yeem tau txais cov khoom zoo meej raws li qhov koj xav tau ntawm tus nqi tsawg kawg nkaus.
Peb kuj muab Reworks, FOB, CFR, CIF, thiab qhov rooj rau qhov rooj tus nqi xa khoom. Peb xav kom koj ua deal rau shipping uas yuav zoo heev.
Cov ntaub ntawv uas peb muab yog muaj tseeb tiag, txoj cai los ntawm raw cov ntaub ntawv xeem daim ntawv pov thawj mus rau qhov kawg dimensional nqe lus.
Peb lav muab cov lus teb tsis pub dhau 24 teev (feem ntau hauv tib lub sijhawm)
Koj tuaj yeem tau txais cov khoom hloov pauv, zeb xa khoom nrog txo lub sijhawm tsim khoom.
Peb tau mob siab rau peb cov neeg siv khoom. Yog tias nws yuav tsis tuaj yeem ua tau raws li koj cov kev xav tau tom qab kuaj xyuas tag nrho cov kev xaiv, peb yuav tsis ntxias koj los ntawm kev cog lus tsis tseeb uas yuav tsim kev sib raug zoo rau cov neeg siv khoom.
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.
Dab tsi yog P355N steel feem ntau paub rau hauv kev lag luam kev siv?
P355N yog ib qho qis- alloy structural steel renowned rau nws zoo heev toughness ntawm ib txwm kub thiab siab zog. Nws muaj qhov zoo weldability thiab formability, ua rau nws zoo tagnrho rau kev thauj khoom -cov kabmob cov khoom siv hauv kev tsim kho, tshuab, thiab kev tsim cov hlab ntsha uas muaj kev ntseeg siab yog qhov tseem ceeb.
P355N txawv ntawm P355NH steel li cas hauv daim ntawv thov?
P355N yog siv rau qhov kub thiab txias, thaum P355NH yog cua sov- qib tiv taus rau qhov kub siab txog li 450℃. P355N haum rau cov qauv dav dav thiab lub nkoj siab ua haujlwm ntawm qhov chaw nyob ib puag ncig, thiab P355NH yog rau boiler thiab tshav kub exchanger Cheebtsam nrog siab thermal loads.
Cov qauv zoo li cas tswj hwm P355N steel ntau lawm?
P355N tau teev tseg raws li European tus qauv EN 10025-3, uas tswj cov hlau tsis tshua muaj hlau rau kev ua haujlwm zoo / kev ua haujlwm zoo li qub. Cov txheej txheem no txhais tau tias nws cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, cov txheej txheem kuaj, thiab qhov ntsuas qhov ntev kom nruj.
Lub zog tensile ntau yam ntawm P355N steel yog dab tsi?
P355N steel muaj lub zog tensile ntau ntawm 470 txog 630 MPa, ua tiav nws cov txiaj ntsig siab. Qhov ntau yam no ua kom nws muaj ductility txaus thiab puas ntsoog thaum lub sij hawm bearing siab tshaj loads, ua rau nws ruaj khov rau structural thiab load- bearing daim ntaub ntawv.
P355N piv rau S355JR steel li cas hauv cov khoom siv tshuab?
P355N muaj tib yam tsawg kawg nkaus tawm lub zog li S355JR (355 MPa) tab sis superior toughness, tshwj xeeb tshaj yog nyob rau hauv qis kub. S355JR yog qhov dav dav - qib hom phiaj nrog kev cuam tshuam qis dua, thaum P355N yog ib txwm ua kom muaj zog sib xws thiab tsim nyog rau kev thov ntau dua.
Dab tsi yog carbon cov ntsiab lus txwv rau P355N steel?
P355N muaj cov ntsiab lus siab tshaj plaws ntawm 0.20%, ib qho kev txwv tseem ceeb rau kev ua kom cov weldability thiab toughness. Cov ntsiab lus qis qis tiv thaiv kev tsim cov tawv, nkig martensite thaum vuam thiab txias, tswj cov hlau cov qauv kev ntseeg siab hauv cov pob qij txha.
Dab tsi yog qhov tseem ceeb ntawm cov tshuaj muaj pes tsawg leeg ntawm P355N steel?
P355N muaj cov tshuaj pleev ib ce uas muaj cov ntsiab lus carbon tsawg los txhim kho weldability, sib npaug ntawm manganese rau lub zog, thiab cov lej ntawm silicon rau deoxidation. Nws muaj cov impurities tsawg heev xws li sulfur thiab phosphorus, ua kom muaj kev ncaj ncees thiab ua haujlwm zoo ib yam ntawm cov khoom siv.
Cov kev lag luam dab tsi yog cov neeg siv loj tshaj plaws ntawm P355N steel?
Cov kev lag luam saum toj kawg nkaus rau P355N suav nrog kev tsim kho (rau txuas hniav, siab - nce cov qauv), cov tshuab hnyav (thav duab, cov khoom siv), kev tsim cov nkoj siab, thiab tsheb (kev lag luam tsheb chassis). Nws kuj tseem siv rau hauv pipework thiab cia tank fabrication rau industrial nroj tsuag.
P355N tiv thaiv corrosion hauv ib puag ncig ntuj li cas?
P355N muaj qhov nruab nrab ntawm ntuj corrosion kuj vim nws cov ntsiab lus tsis tshua muaj alloy. Nyob rau hauv ib puag ncig me me, nws tsim ib txheej oxide nyias, tab sis nyob rau hauv cov av noo, ntug hiav txwv dej, los yog kev lag luam corrosive chaw, ntxiv kev tiv thaiv nto (thawj xim, galvanizing) yuav tsum tau tiv thaiv xeb.
Dab tsi yog qhov tsawg kawg nkaus tawm lub zog ntawm P355N steel?
P355N steel muaj qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa, uas yog lub ntsiab lus tseem ceeb rau nws lub npe. Qhov kev ua tau zoo ntawm lub zog no ua kom nws tuaj yeem tiv taus cov khoom zoo li qub thiab dynamic yam tsis muaj deformation mus tas li, haum rau hnyav -cov dej num thiab kev lag luam siv.