Qhov sib txawv ntawm cov khoom siv hlau P275N thiab P355N

Thaum sib pivP275N thiab P355N siab hlab ntsha hlau, ntau tus neeg yuav khoom tau kos rau P355N vim nws lub zog ntau dua.

P275N

Rau feem ntau ntawm kev siv lub nkoj siab, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem kev khiav hauj lwm, P275N siab nkoj steel phaj tsis tsuas yog txaus - nws yog qhov zoo tshaj plaws thiab tus nqi - xaiv tau zoo.

Ntawm Gnee Steel, peb muab ob qib, tab sis feem pua ​​​​ntawm peb cov neeg siv khoom thaum kawg xaiv P275N tom qab ntsuas lawv cov kev xav tau tiag tiag. Qhov laj thawj yog qhov yooj yim: nws ua tau raws li qhov xav tau ntawm kev ua haujlwm yam tsis muaj tus nqi nce ntxiv.

Yog lawm, P355N muaj zog dua. Tab sis lub zog ib leeg tsis txhais cov nqi.

P355N muaj txog 29% siab zog tawm los, uas suab txaus nyiam. Txawm li cas los xij, hauv ntau qhov tiag - ntiaj teb scenarios:

• Lub tank cia
• Cov thawv ntim tshuaj
• Boilers nyob rau hauv ib txwm siab
• General industrial nkoj

Cov ntawv thov no tsis tas siv lub zog ntxiv ntawd. Qhov no yog vim li cas P275N tau txais dav raws li qhov kev xaiv ua haujlwm ua haujlwm rau cov txheej txheem siab.

Tus nqi ntawm cov khoom feem ntau yog qhov txiav txim siab tshaj plaws hauv kev yuav khoom.

Rau cov haujlwm loj, qhov sib txawv no tuaj yeem txhais ua:

• Txiaj Ntsig txog kaum txhiab nyiaj tau txais kev cawmdim
• Cov txiaj ntsig zoo dua
• Cov nqi sib tw ntau dua qhov project

Yog tias koj qhov project tsis xav tau lub zog siab dua, xaiv P355N yuav dhau los ua lub nra nyiaj txiag tsis tsim nyog.

Los ntawm kev pom kev tsim khoom, P275N muab cov txiaj ntsig meej.

Hauv kev tsim khoom tiag tiag, qhov no txhais tau tias:

P275N pab koj:

• Txo lub sijhawm vuam
• Tsawg tus nqi tsis raug
• Txhim kho ntau lawm efficiency

Cov xwm txheej no ncaj qha txo cov nqi tsim khoom thiab lub sijhawm ua haujlwm.

P275N yog dav siv hauv:

• Roj & roj cia tank
• Petrochemical cov hlab ntsha
• Muaj boilers
• Cov thawv ntim siab

Cov ntawv thov no tseem ceeb tshaj plaws:

• Kev ntseeg tau
• Tus nqi tswj
• Yooj yim ntawm fabrication

Rau cov xwm txheej no, P275N muab kev ua tau zoo txaus yam tsis muaj tshaj - specification.

Muaj ob txoj hauv kev hauv kev xaiv cov khoom siv:

Cov kws tshaj lij engineers thiab cov neeg yuav khoom tsis tshua muaj pib nrog qib siab tshaj plaws.

Hloov chaw, lawv pib nrog P275N raws li lub hauv paus, thiab tsuas yog hloov kho yog tias:

• Kev xav tau siab tshaj qhov txwv
• Tsim kev suav xav kom muaj zog dua
• Qhov hnyav txo yog qhov tseem ceeb

Txoj kev no ua kom tus nqi siab tshaj plaws.

Los ntawm kev pom kev lag luam, P275N yog:

1. Ib qho ntawm feem ntau siv cov hlab ntsha steels
2. Dav muaj nrog cov khoom ruaj khov
3. Yooj yim rau txheej txheem thiab fabricate
4. Tus nqi ntau dua - ua haujlwm tau zoo hauv kev txiav txim ntau

Ntawm Gnee Steel, ib feem loj ntawm kev xaj rov qab los ntawm cov neeg siv khoom uas pib sim cov qib siab dua thiab tom qab ntawd hloov mus rau P275N kom tswj tau tus nqi zoo dua.

Qhov txawv ntawm P275N thiab P355N tsis yog hais txog qhov twg zoo dua. Nws yog hais txog qhov twg yog qhov ua tau zoo dua rau koj qhov project. Yog tias koj daim ntawv thov ua haujlwm raws li cov txheej txheem siab, P275N twb muab:

• Txhim khu lub zog
• Weldability zoo heev
• Pov thawj kev ua tau zoo

Xaiv P355N nyob rau hauv cov xwm txheej zoo li no feem ntau ua rau tus nqi siab dua yam tsis muaj txiaj ntsig tiag tiag.

Yog tias koj tam sim no piv P275N thiab P355N, cov kauj ruam ua tau zoo tshaj plaws yog qhov yooj yim.

• Pib nrog P275N.
• Ntsuas koj tus qauv tsim.
• Tsuas yog hloov kho yog tias tsim nyog.

Txoj hauv kev no yuav pab koj kom tsis txhob muaj tus nqi tsim nyog thaum tswj kev ua raws li tag nrho thiab kev nyab xeeb.

Yog tias koj lub hom phiaj yog tswj kev siv nyiaj txiag, txhim kho kev ua tau zoo, thiab ruaj ntseg kev ua tau zoo, ces P275N tsis yog ib qho kev xaiv xwb - nws yog qhov kev xaiv ntse tshaj plaws.

Ntawm Gnee Steel, peb npaj txhij los txhawb koj qhov project nrog:

• Cov khoom ruaj khov ntawm P275N steel phaj
• Competitive Hoobkas nqi
• Kev xa khoom sai thiab kev txhawb nqa tag nrho

Xa koj cov kev xav tau rau peb hnub no thiab tau txais cov lus hais. Vim hais tias hauv tej yaam num tiag tiag, cov khoom siv zoo tshaj plaws tsis yog qhov muaj zog tshaj - nws yog ib qho uas xa cov nqi zoo tshaj.

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 Greater los yog sib npaug rau 275MPa (rau thickness Tsawg dua los yog 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 qis thiab cov khoom sib cais 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 ntawm 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.

Yuav ua li cas weldability, thiab dab tsi yog cov lus pom zoo welding?

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 hlau 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 rau 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 pauv 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 ntsuam xyuas cuam tshuam ntawm -50 degree, muab qhov zoo dua qhov kub thiab txias dua li 16MnDR, hloov tau rau kev ua haujlwm hnyav dua cryogenic.