Qib ntawm P275N Siab Vessel Steel Phaj yog dab tsi

P275N siab hlab ntsha steel phajyog ib qho kev nplua zoo-cov qauv steel qib tau teev tseg raws li EN 10028-3. Nws yog tsim tshwj xeeb rau kev siv hauv cov hlab ntsha siab, boilers, thiab cov khoom siv cua sov, qhov twg yuav tsum tau muaj zog thiab weldability.

P275N siab hlab ntsha steel phaj

Qhov kev xaiv P275N ua raws li tus qauv kev sib tw npe:

P=Siab lub nkoj steel

275=Yam tsawg kawg nkaus tawm lub zog ntawm 275 MPa

N=Kev ua tau zoo los yog ua tau raws li tus txheej txheem xa tuaj

Yog li, P275N Cov Khoom Siv yog cov qib siab ntawm cov hlab ntsha uas muaj zog tsawg kawg nkaus ntawm 275 MPa.

Qhov kev faib tawm no ua kom ntseeg tau tias P275N siab cov hlab ntsha hlau ua tau raws li cov kev cai nruj rau cov khoom siv kho tshuab thiab weldability.

Cov khoom no ua rau cov khoom siv P275N haum rau nruab nrab - siab thiab nruab nrab - daim ntawv thov kub.

P275N steel muaj qib sib npaug lossis zoo sib xws hauv lwm cov qauv thoob ntiaj teb:

Qhov sib npaug no qhia tau tias P275N siab cov hlab ntsha hlau muaj qhov sib piv ntawm cov qauv thoob ntiaj teb sib txawv.

Vim nws cov khoom sib npaug, P275N Khoom siv dav siv hauv:

• Boiler kev tsim khoom
• Cov hlab ntsha siab thiab lub tank
• Cov khoom siv roj & roj cia
• Thaum tshav kub kub exchangers
• Cov khoom siv hluav taws xob

Nws yog qhov tshwj xeeb tshaj yog tsim rau cov ntawv thov uas xav tau weldability zoo, lub zog nruab nrab, thiab kev ua haujlwm ruaj khov nyob rau hauv siab.

Qib ntawm P275N siab lub nkoj steel phaj hais txog qhov zoo li qub -cov hlau tsis muaj zog nrog qhov tsawg kawg nkaus ntawm 275 MPa, ua raws li EN 10028-3.

Nws yog ib qho kev txhim khu kev qha thiab tus nqi - siv tau zoo P275N siab nkoj steel dav siv hauv cov khoom siv thiab cov tshuab siab.

Yog tias koj tab tom nrhiav P275N Steel Supplier uas ntseeg siab, peb muab siab - zoo P275N Khoom siv nrog daim ntawv pov thawj tag nrho, tus nqi sib tw, thiab xa khoom sai.

Tiv tauj peb hnub no kom tau txais cov lus tshaj tawm tshiab thiab kev txhawb nqa rau koj qhov project.

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.