P355GHyog ib qho kev lees paub dav dav ntawm cov hlab ntsha steel qib qhia meej meej hauv European tus qauv EN 10028-2, uas tswj cov hlau rau cov khoom siv siab. Raws li tsis yog- alloy, nplua- cov qauv hlau, nws khav theeb kev ua tau zoo, suav nrog kev ua haujlwm zoo tshaj plaws uas tiv taus cov pob txha tawg, zoo heev weldability tau sib xws nrog ntau yam txheej txheem vuam, thiab txhim khu kev qha siab - qhov kub thiab txias uas tswj cov qauv kev ruaj ntseg nyob rau hauv nruab nrab-qhov kub thiab txias kev ua haujlwm. Cov txiaj ntsig zoo no ua rau nws nyiam cov khoom siv hauv kev tsim cov hlab ntsha siab, boilers, thiab cov cuab yeej muaj feem cuam tshuam thoob plaws petrochemical, hluav taws xob tsim hluav taws xob, thiab kev lag luam tshuaj.
P355GH tshuaj muaj pes tsawg leeg
|
Qib |
Cov ntsiab lus Max (%) |
||||||
|
C |
Si |
Mn |
P |
S |
Al (min) |
N |
|
|
P355GH |
0.10-0.22 |
0.60 |
1.10-1.70 |
0.025 |
0.015 |
0.020 |
0.012 |
|
Cr |
Cu |
Mo |
Nb |
Ni |
Ti |
V |
|
|
0.30 |
0.30 |
0.08 |
0.040 |
0.30 |
0.03 |
0.02 |
|
Mechanical Properties:
| Hom | Thickness (hli) | Yield zog MPa (min) |
Tensile zog MPa |
Elongation % (min) |
Impact Zog (KV J) (min) |
Impact Zog (KV J) (min) |
Impact Zog (KV J) (min) |
|---|---|---|---|---|---|---|---|
| -20 degree | 0 degree | +20 degree | |||||
| Li qub | Tsawg dua los yog sib npaug li 16 |
355 | 510 - 650 | 21 | 27 | 34 | 40 |
| 16>mus tsawg dua los yog sib npaug li 40 | 345 | 510 - 650 | 21 | 27 | 34 | 40 | |
| 40>kom tsawg dua los yog sib npaug li 60 | 335 | 460 - 580 | 21 | 27 | 34 | 40 | |
| 60>kom tsawg dua los yog sib npaug li 100 | 315 | 490 - 630 | 21 | 27 | 34 | 40 | |
| 100>los tsawg dua los yog sib npaug li 150 | 295 | 480 - 630 | 21 | 27 | 34 | 40 | |
| 150>mus tsawg dua los yog sib npaug li 250 | 280 | 470 - 630 | 21 | 27 | 34 | 40 |
P355GH Hlau Daim Ntawv Thov Cov Cai
P355GH yog tsim los rau kev ua haujlwm tsis tu ncua raws li cov txheej txheem thermal thiab siab, nrog rau nws daim ntawv thov tau nruj me ntsis sib phim rau nws cov khoom siv. Cov xwm txheej tseem ceeb ntawm kev thov yog raws li hauv qab no:
Qhov kub thiab txias: Nws feem ntau yog siv nyob rau hauv nruab nrab mus rau siab - qhov chaw ua haujlwm kub, nrog rau qhov kub thiab txias ntawm kev ua haujlwm tsis tu ncua-20℃rau 400 degree. Cov hlau tuav tau zoo heev ntawm qhov kub thiab txias kom tsis txhob tawg tawg, thiab nws cov qauv kev ruaj ntseg thiab lub zog txhua yam nyob twj ywm uncompromised nyob rau hauv ntev - lub sij hawm siab - kub cua sov, tsis pom kev ua tau zoo degradation los ntawm thermal aging.
Siab Bearing Requirements: Haum rau nruab nrab thiab siab -kev ua haujlwm siab ntawm lub siab- cov khoom siv bearing, yoog raws qhov kev hloov pauv siab hauv kev lag luam xws li boilers thiab cov hlab ntsha siab. Nws muaj peev xwm dais ruaj khov tsim siab thiab tiv thaiv instantaneous siab shocks, ua tau raws li lub siab tiv thaiv qauv ntawm European EN siab nkoj steel rau zoo li qub thiab dynamic load-cov kabmob scenarios.
Ua hauj lwm nruab nrab & ib puag ncig: Muaj feem xyuam rau cov khoom siv hauv kev sib cuag nrog cov xov xwm kev lag luam xws li dej, chav dej, roj, nkev roj thiab cov kua tshuaj lom neeg. Nws muaj kev tiv thaiv zoo rau cov xov xwm me me thiab cov thermal qaug zog tshwm sim los ntawm kev hloov pauv txias thiab cua sov, thiab yog tsim rau qhuav, av noo thiab lwm yam kev ua haujlwm ib puag ncig (tsis suav nrog cov kua qaub muaj zog, muaj zog alkali thiab lwm yam mob hnyav corrosive).
Vuam & Fabrication Condition: Nws yog siv nyob rau hauv welded structural Cheebtsam ntawm lub siab cov cuab yeej, yuav tsum tau cov pa arc vuam txheej txheem thiab tsis complex preheating los yog post-weld tshav kub kev kho mob nyob rau hauv ib txwm fabrication tej yam kev mob, uas yog sib xws nrog standard industrial ntau lawm thiab ua raws li cov kev cai ntawm siab- bearing qhov chaw.
P355GH steel daim ntaub ntawv
P355GH yog ntau yam siab lub nkoj steel ua raws li European EN cov qauv, dav siv hauv kev lag luam uas xav tau kev ua haujlwm ruaj khov nyob rau hauv nruab nrab mus rau qhov kub thiab txias. Nws cov ntawv thov tseem ceeb yog raws li hauv qab no:
Boiler Manufacturing: Nws yog cov khoom tseem ceeb rau boiler siab qhov chaw, xws li nruas plhaub, phab ntsa dej, superheater headers thiab downcomers. Cov Cheebtsam no ua haujlwm nyob rau hauv ntev -lub sij hawm siab- kub (txog 400 degree) thiab siab -siab, thiab P355GH qhov zoo heev thermal qaug zog tiv thaiv thiab weldability kom muaj kev nyab xeeb thiab txhim khu kev qha, ua tau raws li cov kev cai nruj ntawm cov fais fab nroj tsuag thiab muaj boiler systems.
Cov nkoj siab: Nws yog dav siv los tsim cov hlab ntsha siab hauv petrochemical, tshuaj thiab tshuaj lag luam. Cov hlab ntsha no khaws lossis thauj cov xov xwm xws li roj, roj, tshuaj thiab chav dej, qhov twg P355GH cov khoom ruaj khov thiab kev tiv thaiv corrosion tiv thaiv kom tsis txhob tawg thiab deformation, hloov mus rau qhov chaw ua haujlwm hnyav nrog qhov kub thiab txias.
Thaum tshav kub kub Exchangers: Nws ua haujlwm raws li cov khoom siv tseem ceeb rau cov khoom siv hluav taws xob sib hloov, cov ntawv raj thiab cov plhaub. Thaum tshav kub kub exchangers yog qhov tseem ceeb rau kev hloov hluav taws xob hauv kev tsim hluav taws xob, tub yees thiab kev lag luam. P355GH qhov zoo thermal conductivity thiab toughness ua kom muaj kev sib pauv cua sov zoo thaum tiv thaiv kev ntxhov siab, txo cov nqi tu thiab ncua kev pab cuam lub neej.
Qhov zoo ntawm P355GH Steel
P355GH yog cov khoom siv rau siab- cov khoom siv bearing hauv ntau qhov kev lag luam vim nws txoj kev ua tau zoo. Cov txiaj ntsig tseem ceeb yog raws li hauv qab no:
Zoo heev Mechanical Properties: Nws muaj lub zog tensile ruaj khov, tawm los lub zog thiab siab tawv, tshwj xeeb tshaj yog tswj kev cuam tshuam zoo ntawm qhov kub thiab txias (-20℃). Qhov no ua rau nws tiv taus ntev - lub sij hawm siab - qhov kub thiab txias tsis muaj kev puas tsuaj, ua kom muaj kev nyab xeeb ntawm cov hlab ntsha thiab cov boilers.
Superior Weldability: Nws yog sib xws nrog cov txheej txheem arc vuam (MIG/MAG, TIG, SMAW) yam tsis muaj kev ua kom sov ua ntej lossis tom qab-weld heat treatment rau kev siv dav dav. Weld pob qij txha muaj zog thiab zoo toughness, txo fabrication nyuaj thiab ntau lawm nqi.
Zoo Formability: Nws ua tau zoo nyob rau hauv ob qho tib si kub thiab txias txheej txheem. Nrog rau cov yas deformability zoo heev ntawm qhov kub thiab txias txias ua haujlwm, nws tuaj yeem ua tau yooj yim rau hauv ntau yam khoom (plhaub, taub hau, taub hau) kom tau raws li kev xav tau ntawm kev tsim khoom ntau yam khoom siv.
Thermal stability: Nws muaj zog tiv thaiv thermal qaug zog thiab thermal aging, tswj cov txheej txheem thiab kev ua haujlwm ruaj khov nyob rau hauv ntev -lub sij hawm tsis tu ncua siab - kub (txog 400 degree) ua haujlwm. Nws tsis yooj yim rau kev ua haujlwm degradation, ncua kev pabcuam lub neej ntawm cov khoom siv.
Kev siv dav dav & kev ua raws cai: Ua raws li European EN cov qauv, nws tsim nyog rau ntau yam xov xwm (dej, chav, roj, thiab lwm yam) thiab kev lag luam (petrochemical, hluav taws xob, thiab lwm yam). Nws cov khoom lag luam paub tab thiab cov txheej txheem ua tiav ua rau nws raug nqi - siv tau thiab dav.
Yog xav paub ntxiv txog GNEE cov khoom steel, tiv tauj peb ntawm beam@gneesteelgroup.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
Tus qauv twg txhais tau tias P355GH?
P355GH yog txhais los ntawm European tus qauv EN 10028-2, uas qhia txog cov txheej txheem kev xa khoom rau cov hlau tsis muaj hlau thiab alloy steel rau lub hom phiaj siab, npog cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab thiab cov kev xeem.
Dab tsi yog cov tshuaj tseem ceeb ntawm P355GH?
Cov tshuaj lom neeg tseem ceeb ntawm P355GH suav nrog C ( Tsawg dua lossis sib npaug li 0.20%), Si (Less dua lossis sib npaug li 0.55%), Mn (1.00-1.60%), P (tsawg dua lossis sib npaug li 0.025%), S (tsawg dua lossis sib npaug li 0.015%), thiab cov kab lus, Ni.
P355GH puas tuaj yeem siv rau hauv qhov chaw qis - qhov kub thiab txias?
P355GH muaj qhov zoo qis -kub toughness, feem ntau haum rau ib puag ncig saum toj no -20℃. Rau qhov ntsuas kub qis dua, nws yuav tsum dhau qhov kev ntsuas cuam tshuam kom ntseeg tau tias nws tuaj yeem tiv taus qhov tawg tawg thiab ua tau raws li cov ntawv thov.
Yuav ua li cas kuaj qhov cuam tshuam toughness ntawm P355GH?
Qhov cuam tshuam toughness ntawm P355GH yog kuaj los ntawm Charpy V-notch impact test. Cov qauv raug coj los ntawm cov khoom siv, thiab qhov cuam tshuam lub zog yog ntsuas ntawm qhov ntsuas kub (feem ntau yog 20℃lossis -20 degree) los ntsuas nws qhov tawv.
Dab tsi yog qhov thickness ntau ntawm P355GH daim hlau?
P355GH daim hlau feem ntau muaj nyob rau hauv thickness xws li 5 hli mus rau 200 hli. Rau cov phaj tuab, kev kho cua sov ntxiv thiab kev sim yuav tsum tau ua kom ntseeg tau tias cov khoom siv kho tshuab tsis sib xws thoob plaws -section.
Qhov txawv ntawm P355GH thiab P355NH yog dab tsi?
Lub ntsiab sib txawv yog nyob rau hauv toughness yuav tsum tau. P355NH yog cov hlau tsis muaj zog uas muaj kev sib tw siab dua ntawm qhov kub thiab txias (-20 degree), thaum P355GH yog kub-rolled los yog normalized steel, haum rau nruab nrab-kub siab.
Yam tsawg kawg nkaus txhua yam khoom ntawm P355GH yog dab tsi?
P355GH muaj qhov tsawg kawg nkaus yield zog ntawm 355 MPa (ntawm 16-40 mm thickness), yam tsawg kawg nkaus tensile zog ntawm 470-630 MPa, yam tsawg kawg nkaus elongation ntawm 21%, thiab zoo cuam tshuam toughness ntawm chav tsev thiab tsis kub.
Lub zog tensile ntau ntawm P355GH yog dab tsi?
Lub zog tensile ntawm P355GH nyob ntawm 470 MPa rau 630 MPa, uas yog siab dua li cov qauv hlau zoo tib yam. Qhov no ua rau nws tsim nyog rau cov kabmob nruab nrab siab thiab ua kom muaj kev ruaj ntseg hauv kev siv lub nkoj siab.
Qhov siab tshaj plaws ua haujlwm kub ntawm P355GH yog dab tsi?
Qhov siab tshaj plaws kev khiav hauj lwm kub ntawm P355GH yog feem ntau nyob ib ncig ntawm 400-450 degree. Tshaj li qhov no, nws cov khoom siv kho tshuab tuaj yeem txo qis, cuam tshuam rau kev nyab xeeb thiab kev pabcuam lub neej ntawm cov hlab ntsha siab.