P275N siab lub nkoj steel phajyog cov khoom koj yuav tsum tau ua ntej. Ntawm tag nrho EN 10028-3 qib, P275N tsis yog ib qho kev xaiv xwb - nws yog qhov feem ntau yuav thiab siv cov qib steel rau cov txheej txheem siab lub nkoj thoob ntiaj teb. Nws muab raws nraim li cov neeg yuav khoom feem ntau xav tau: lub zog txhim khu kev qha, ua haujlwm yooj yim, thiab tswj tus nqi.
P275N siab lub nkoj steel phaj
Ntawm Gnee Steel, P275N yog ib qho ntawm peb cov khoom tseem ceeb export. Txhua xyoo, peb muab cov P275N steel phaj ntau ntau rau cov neeg cog lus thiab cov neeg xa khoom uas xav kom tsis txhob dhau - cov lus qhia tshwj xeeb thaum tseem ua tau raws li cov qauv kev nyab xeeb.
Yog tias koj daim ntawv thov tsis cuam tshuam nrog huab cua txias, xaiv P275N tsis yog kev sib haum xeeb - nws yog ib qho kev txiav txim siab los ua kom qhov project efficiency thiab profitability.
P275N Pressure Vessel Steel yog dab tsi?
P275N yog ib qho zoo li qub -cov nplej tsis yog- hlau alloy tsim los rau cov hlab ntsha siab thiab cov khoom siv.
- Lub zog tawm los: Ntau dua lossis sib npaug ntawm 275 MPa
- Tensile zog: 390-530 MPa
- Txheem: EN 10028-3
- Delivery condition: Normalized
Nws muab kev sib xyaw ua ke ntawm lub zog, ductility, thiab weldability, ua rau nws haum rau feem ntau - lub hom phiaj kev siv siab.
Tshuaj muaj pes tsawg leeg ntawm P275N Steel
| Element | Cov ntsiab lus (%) |
|---|---|
| C | Tsawg dua los yog sib npaug li 0.20 |
| Si | Tsawg dua los yog sib npaug li 0.40 |
| Mn | 0.90 – 1.50 |
| P | Tsawg dua lossis sib npaug li 0.025 |
| S | Tsawg dua lossis sib npaug li 0.015 |
| N | Tsawg dua lossis sib npaug li 0.012 |
Qhov no muaj pes tsawg leeg ua kom tsis muaj vuam tawg rhiab heev thiab ruaj khov kev ua tau zoo hauv fabrication.
Mechanical Properties ntawm P275N Steel Phaj
| Thickness (hli) | Yield zog (MPa) | Tensile zog (MPa) | Elongation (%) |
|---|---|---|---|
| Tsawg dua los yog sib npaug li 16 | Ntau dua lossis sib npaug li 275 | 390 – 530 | Ntau dua lossis sib npaug 22 |
| 16 – 40 | Ntau dua lossis sib npaug rau 265 | 390 – 530 | Ntau dua lossis sib npaug 22 |
| 40 – 60 | Ntau dua lossis sib npaug li 255 | 390 – 530 | Ntau dua lossis sib npaug 22 |
| 60 – 100 | Ntau dua lossis sib npaug li 245 | 390 – 530 | Ntau dua lossis sib npaug 22 |
Cov khoom no ua kom muaj zog tiv thaiv thaum tswj kev yoog raws, uas yog qhov tseem ceeb rau kev ua haujlwm nyab xeeb.
Vim li cas P275N thiaj li siv tau ntau dua li lwm cov qib P275
Thaum P275NH, P275NL1, thiab P275NL2 yog tsim los rau cov xwm txheej tshwj xeeb, lawv feem ntau tsis tas yuav kim rau cov haujlwm txheem.
| Qib | Feature | Tus nqi cuam tshuam |
|---|---|---|
| P275N | Cov ntawv thov txheem | Kev lag luam feem ntau |
| P275 NH | Kub kub | +10–15% |
| P275 NL1 | Tsawg kub (-20 ℃) | +15–25% |
| P275 NL 2 | Tsis tshua muaj kub (-50 degree) | +25–35% |
Hauv qhov xwm txheej ntawm kev yuav khoom tiag tiag, tshaj - cov lus qhia tshwj xeeb tuaj yeem ua rau nce tag nrho cov nqi tsim nyog yam tsis tau txhim kho qhov ua tau zoo.
Tias yog vim li cas cov neeg siv khoom paub txog feem ntau rov qab mus rau P275N raws li lub hauv paus thiab kev xaiv zoo tshaj plaws.
Qhov tseem ceeb ntawm P275N Steel Phaj
Tus nqi tswj
Kev siv P275N tuaj yeem txo cov nqi khoom siv tag nrho txog li 20–30% piv rau qib siab dua.
Yooj Yim Fabrication
Weldability zoo heev txhim kho cov khoom nrawm thiab txo cov nqi tsis raug.
Cov khoom ruaj khov
P275N yog dav tsim, ua kom lub sij hawm luv luv thiab muaj zoo dua.
Pov thawj Performance
Siv thoob ntiaj teb hauv ntau txhiab qhov haujlwm, P275N muaj kev ntseeg tau thiab kev ua tau zoo.
Vim li cas thiaj xaiv Gnee Steel?
Thaum muab P275N, qhov sib xws thiab kev cia siab rau kev xa khoom tseem ceeb tshaj txhua yam. Ntawm Gnee Steel, peb muab ntau txhiab tons ntawm P275N steel daim hlau txhua xyoo, ua rau nws yog ib qho ntawm peb cov khoom lag luam zoo tshaj plaws thiab ruaj khov.
Qhov ntim no tso cai rau peb kom tswj tau qhov zoo ib yam thiab tus nqi sib tw.
Peb txhawb nqa ntau qhov loj me:
- Thickness: 6-100 hli
- Dav: mus txog 3500 mm
- Ntev: mus txog 12000 mm
Tag nrho cov khoom tuaj yeem xa nrog EN 10204 3.1 ntawv pov thawj, ua kom tag nrho cov ntaub ntawv taug qab thiab ua raws.
Peb lub peev xwm ua tau tso cai:
- Precision txiav (± 1 hli kam rau ua)
- Kev cai qhov ntau thiab tsawg los txo cov khoom pov tseg
- Faster fabrication rau koj qhov project
Kev xa khoom yog lwm qhov txiaj ntsig tseem ceeb. Peb lub sij hawm ua tus qauv yog 7-20 hnub, pab cov neeg siv khoom kom tsis txhob ncua sij hawm ntawm qhov project.
Los ntawm kev ua haujlwm ncaj qha nrog peb, koj tshem tawm cov nqi nruab nrab thiab nce:
- Factory- tus nqi ncaj qha
- ruaj khov ntev - lub sij hawm muab khoom
- Kev teb sai dua thiab kev txhawb nqa
Qhov no yog vim li cas ntau tus neeg siv khoom xaiv Gnee tsis yog ib zaug xwb, tab sis ua tus xa khoom ntev -.
Yog tias koj qhov project yuav tsum muaj kev ntseeg siab thiab tus nqi - tswj cov khoom siv lub nkoj siab, ces P275N tsis yog ib qho kev xaiv xwb - nws yog qhov kev xaiv zoo tshaj plaws muaj.
Xaiv cov qib siab dua tuaj yeem ua rau koj cov peev nyiaj nce ntxiv, tab sis nws yuav tsis tas yuav txhim kho koj qhov kev tshwm sim. Xaiv P275N txhais tau hais tias koj tab tom txiav txim siab txog kev yuav khoom zoo.
Tam sim no yog lub sijhawm zoo los khaws koj cov khoom. Xa koj cov cai rau peb hnub no, thiab koj yuav tau txais:
- Tseeb Hoobkas nqi rau P275N
- Muaj Tshuag thiab qhov ntau thiab tsawg
- Mill Test Certificate (MTC)
- Kev npaj xa khoom sai
Qhov sib txawv ntawm qhov project zoo thiab qhov project tau txais txiaj ntsig feem ntau los ntawm kev xaiv cov khoom siv thiab kev xaiv tus neeg muag khoom.
Hu rau tam sim no kom tau txais P275N steels Quote
Dab tsi yog qhov txawv ntawm P275N, P275NH, P275NL1, thiab P275NL2?
Qhov sib txawv tseem ceeb yog nyob rau hauv qhov ntsuas kub ntawm qhov ntsuas kub thiab siv tau rau kev ua haujlwm. Tag nrho plaub qib muaj qhov tsawg kawg nkaus tawm lub zog ntawm ntau dua lossis sib npaug rau 275MPa (rau thickness Tsawg dua lossis sib npaug rau 16mm) thiab ua raws li EN 10028-3 tus qauv:
P275N: Kev ntsuam xyuas cuam tshuam ntawm -20 degree, haum rau cov hlab ntsha ntawm qhov kub thiab txias thiab cov kav dej dav dav;
P275NH: Kev ntsuam xyuas cuam tshuam ntawm -20 degree, optimized rau siab -kev ua haujlwm kub, hloov mus rau nruab nrab- rau-siab kub siab hauv qab 350℃;
P275NL1: Kev ntsuam xyuas cuam tshuam ntawm -40 degree, haum rau cov tso tsheb hlau luam uas tsis muaj qhov kub thiab txias hauv cov cheeb tsam txias;
P275NL2: Kev ntsuam xyuas cuam tshuam ntawm -50 degree, muab qhov zoo tshaj plaws ultra-low kub toughness, yoog rau cov khoom siv cryogenic xws li kua nitrogen / LNG systems.
Yuav ua li cas yog tus lej sib raug rau plaub qib no?
P275N: 1.0483;
P275NH: 1.0485;
P275NL1: 1.0488;
P275 NL2: 1.1104.
Puas yog thickness cuam tshuam kev ua haujlwm?
Yog, nws ua. Thaum lub thickness ntau tshaj 16 hli, lub zog tawm los maj mam txo qis (piv txwv li, Ntau dua lossis sib npaug ntawm 245MPa rau 63 ~ 100mm), thiab qhov qis - kub toughness kuj poob me ntsis. Rau ultra- qhov kub thiab txias ua hauj lwm tej yam kev mob nrog thickness ＞40mm, nws raug nquahu kom ua qhov tseem ceeb ntawm P275NL2 thiab nce qhov piv txwv rau kev ntsuam xyuas cuam tshuam.
Cov cuab yeej cuab tam tseem ceeb ntawm plaub qib yog dab tsi?
Yield Strength (ReH): Ntau dua los yog sib npaug rau 275MPa rau thickness Tsawg dua los yog sib npaug rau 16mm, me ntsis txo nrog nce thickness (xws li, Ntau tshaj los yog sib npaug rau 255MPa rau 40 ~ 63mm);
Tensile zog (Rm): 410 ~ 560MPa;
Impact Energy (KV): Ntau dua lossis sib npaug rau 27J rau txhua qhov cuam tshuam qhov kub thiab txias (cov khoom siv tsis tu ncua ua tau raws li ntau dua lossis sib npaug rau 40J txhawm rau txhim kho kev nyab xeeb dua);
Elongation (A): Ntau dua lossis sib npaug li 22% ~ 24% (hloov nrog tuab).
Dab tsi yog qhov ntau ntawm qhov muaj nyob?
Thickness: 6mm ~ 300mm;
Dav: 1500mm ~ 4800mm;
Ntev: 6000mm ~ 18000mm;
Customized txiav, drilling, thiab beveling cov kev pab cuam muaj, nrog tsawg kawg txiav loj ntawm 500 × 500mm.
Lub weldability zoo li cas, thiab cov lus pom zoo welding yog dab tsi?
Nws muaj qhov zoo tshaj plaws weldability (CEV Tsawg dua lossis sib npaug rau 0.43%), nrog cov kev pom zoo:
Vuam Consumables: E5515-C1 rau phau ntawv arc vuam, H08MnA + F55A4 flux rau submerged arc vuam, thiab ER50-6 rau roj arc vuam;
Preheating Requirement: Tsis muaj preheating yuav tsum tau thickness tsawg dua los yog sib npaug rau 30mm; preheat rau 100 ~ 150℃rau thickness ~ 30mm;
Interpass Kub: Tsawg dua los yog sib npaug li 250 degree, nrog cov cua kub tswj ntawm 15 ~ 35kJ / cm;
Ncej -Kev kho cua sov (PWHT): Pom zoo rau cov phaj tuab (＞50mm) - kev ntxhov siab rau kev ntxhov siab ntawm 580 ~ 620℃rau 2 teev.
P275 series puas tuaj yeem hloov tau rau ASTM A516 Gr70 (American standard) lossis Q345R (Suav tus qauv)?
vs. ASTM A516 Gr70: Lub zog zoo sib xws, tab sis P275 series muaj qhov zoo dua qis dua -kub toughness
. P275 series yog qhov nyiam rau cov haujlwm nyob sab Europe, thaum ASTM A516 Gr70 haum rau North American cov haujlwm;
vs. Q345R (GB 713): Q345R muaj lub zog tawm los ntau dua (Ntau dua lossis sib npaug rau 345MPa), tab sis P275 series ua tau zoo nyob rau hauv qis- qhov kub thiab txias (-20℃cuam tshuam) thiab qhov kub thiab txias. Rau cov haujlwm thoob ntiaj teb, nws raug pom zoo kom xaiv raws li EN tus qauv ua ntej.
Dab tsi yog qhov txawv ntawm P275NL1 / NL2 thiab 16MnDR (Suav tus qauv)?
16MnDR (GB 3531): Kev ntsuas cuam tshuam ntawm -40 degree, tawm lub zog ntau dua lossis sib npaug rau 315MPa, tsim nyog rau cov haujlwm kub hauv tsev;
P275NL1: Kev ntsuas cuam tshuam ntawm -40 degree, tawm lub zog ntau dua lossis sib npaug ntawm 275MPa, koom nrog European tus qauv system nrog kev lees paub thoob ntiaj teb siab dua;
P275NL2: Kev sim cuam tshuam ntawm -50 degree, muab qhov zoo dua qhov kub thiab txias dua li 16MnDR, hloov tau mus rau qhov ua haujlwm hnyav dua cryogenic.
| Lwm cov hlau phaj | ||||
| Lub npe | Khoom siv | Specification (hli) | Tos | Lus ceeb toom |
| Clad steel phaj | P265GH+410,S355JR+410,A516Gr70+316, A537CL1+304L,Q235B+304L,Q345B+304, A516Gr70(NACE)+410,A537CL1+904L, A537CL1+316L,A516Gr70+304L,A537CL1+304 ,A516Gr70+410,A516Gr70+904L |
2-300mm (raws li phaj), 1-50mm (Composited phaj) | / | UT, AR, TMCP.Normalized, Quenched thiab Tempered, Z Direction Test, Charpy V-Ntch impact TestThe Third Party Test, Coated or Shot Blasting and Painting. |
| Tsawg Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered, tswj dov, kub dov, Kub dov, 1st tshuaj xyuas, 2nd tshuaj ntsuam, 3rd tshuaj ntsuam |
| Pressure Vessel Plate | Q245R, Q345R, Q370R, 16MnDR, 09MnNiDR, 15CrMoR, 14Cr1MoR, 12Cr2Mo1R, SA516Gr60, SA516Gr70, SA516Gr485, SAG281G, SAG281G SA387Gr22, P265,P295,P355GH,Q245R(R-HIC),Q345R(R{30}}HIC) | 3 - 300 | 8650 | Normalizing, tempered, tswj dov, kub dov, Kub dov, 1st tshuaj xyuas, 2nd tshuaj ntsuam, 3rd tshuaj ntsuam |
| Siab -Plate muaj zog | WH785D/E,Q960D/E,Q890D/E,WH60D/E,WH70B,Q550D,Q590D,Q690D/E | 8 - 120 | 3086.352 | Quenched thiab tempered |
| Hnav-Resistant Phaj | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched thiab tempered |
| Choj Phaj | Q235qC, Q345qC, Q370qC, Q420qC, Q345qDNH, Q370qDNH, A709 - 50F - 2, A709 - 50T - 2 | 8 - 200 | 2853.621 | Kub dov, normalized, kub dov tswj dov, quenched thiab tempered + toughness thiab brittleness |