Lub zog tensile ntawm P275N siab nkoj steel ntawv

Lub zog tensile ntawmP275N siab nkoj steel ntawvyog ib qho cuab yeej cuab tam tseem ceeb uas txiav txim siab nws lub peev xwm tiv thaiv sab nraud yam tsis muaj kev ua haujlwm.

P275N siab nkoj steel ntawv

Raws li cov khoom siv dav siv P275N raws li EN 10028-3, nws muaj kev sib xyaw ua ke ntawm lub zog, ductility, thiab weldability rau cov cuab yeej siv siab.

Raws li EN 10028-3, lub zog tensile ntawm P275N siab nkoj steel ntawv yog:

Lub zog tensile no ua kom ntseeg tau tias P275N Cov Khoom Siv tuaj yeem tswj cov kev ntxhov siab me ntsis thaum tswj kev ua haujlwm zoo.

Lub zog tensile hais txog qhov siab tshaj plaws ntawm cov khoom siv tuaj yeem tiv taus ua ntej tawg. Rau P275N siab nkoj steel, qhov no txhais tau tias:

• Nws tuaj yeem tiv taus deformation nyob rau hauv siab
• Nws muab kev nyab xeeb margin tshaj qhov taw tes tawm los
• Nws ua kom muaj kev ntseeg siab thaum ua haujlwm

Kev sib xyaw ua ke ntawm Ntau dua lossis sib npaug ntawm 275 MPa yield zog thiab 390-510 MPa tensile lub zog ua rau nws haum rau siab -cov qauv kabmob.

Hauv kev siv xws li boilers thiab cia tank, tensile zog plays lub luag haujlwm tseem ceeb:

• Siab Resistance

Lub zog tensile siab dua tso cai rau cov ntawv hlau tuaj yeem tiv thaiv sab hauv los ntawm cov pa roj lossis kua dej.

• Kev Nyab Xeeb Kev Nyab Xeeb

Tiv thaiv tsis ua hauj lwm tam sim ntawd thaum thauj khoom, ua kom muaj kev nyab xeeb ntev - lub sijhawm ua haujlwm.

• Fabrication Performance

Qhov sib npaug tensile lub zog ua kom ntseeg tau tias P275N Khoom tseem yooj yim rau kev tsim, khoov, thiab vuam yam tsis muaj kev tawg.

Lub zog tensile ntawm P275N siab nkoj steel ntawv ua rau nws zoo tagnrho rau:

• Boiler shells thiab chav nruas
• Cov hlab ntsha siab thiab LPG tanks
• Roj thiab roj cia tank
• Kub exchangers
• Industrial pipelines

Hauv cov ntawv thov no, cov hlau yuav tsum tswj kev sib koom ua ke, kev hloov pauv kub, thiab lub voj voog siab.

Piv rau qib siab dua li P355N:

• P275N Khoom siv → Lub zog tensile qis, tus nqi ntau dua - zoo
• P355N → Lub zog ntau dua rau kev xav tau ntau dua

Qhov no ua rau P275N siab cov hlab ntsha hlau yog qhov kev xaiv zoo tshaj plaws rau nruab nrab - cov ntawv thov siab uas tsis tas yuav muaj zog heev.

Lub zog tensile ntawm P275N siab hlab ntsha steel ntawv (390-510 MPa) muab qhov sib npaug txhim khu kev qha ntawm lub zog thiab kev ua haujlwm. Nws ua kom muaj kev nyab xeeb kev ua haujlwm hauv qhov chaw siab thaum tswj xyuas cov khoom zoo.

Rau kev siv lub nkoj siab thiab boiler, xaiv txoj cai tensile lub zog yog qhov tseem ceeb rau kev nyab xeeb thiab kev ua haujlwm. Peb P275N siab cov hlab ntsha steel ntawv ua tau raws li EN cov qauv nrog kev ua haujlwm ruaj khov thiab xa khoom sai.

Tiv tauj peb hnub no kom tau txais kev txhawb nqa thiab tus nqi tshiab rau P275N 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 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.