Lub vuam kev ua tau zoo ntawm Q345R yog dab tsi?
Q345Ryog ib qho qis- alloy, siab - lub zog siab lub nkoj steel nrog zoo vuam kev ua tau zoo, tus yam ntxwv los ntawm zoo ductility, toughness, thiab tsis kam mus rau txias cracking. Nws yog qhov tsim nyog rau kev vuam nrog txoj kev zoo li SAW thiab MAG, feem ntau tsim cov pob qij txha nrog lub zog tensile siab tshaj 565 MPa thiab lub zog muaj zog. Nws pom zoo toughness nyob rau hauv ob lub hauv paus hlau thiab tshav kub- cuam tshuam cheeb tsam.
Q345R yog hom qis- alloy steel feem ntau tsim los tsim cov hlab ntsha siab, xws li boilers thiab cia tso tsheb hlau luam, uas ua haujlwm nyob rau hauv qhov kub thiab txias. Nws yog txhais raws li SuavGB 713-2014tus qauv, uas qhia meej txog qhov yuav tsum tau ua rau cov hlau phaj siv hauv kev tsim cov hlab ntsha siab. Cov qib steel no yog siv dav hauv kev lag luam uas xav tau cov ntaub ntawv muaj peev xwm tiv taus qhov kub thiab txias, xws li tshuaj lom neeg, petrochemical, thiab hluav taws xob tsim kev lag luam.
Cov yam ntxwv tseem ceeb ntawm Q345R:
Yield zog: 345 MPa - qhov no txhais tau tias cov hlau tuaj yeem tiv taus mus txog 345 megapascals ntawm quab yuam ua ntej nws pib mus tas li deform.
Tensile zog: 470–630 MPa - qhia kev ua haujlwm siab rau kev tawg hauv kev ntxhov siab.
Elongation: Ntau dua 20% - qhia txog qib siab ntawm ductility thiab muaj peev xwm ncav cuag yam tsis muaj tawg.
Impact Toughness: Nws tuav tau zoo toughness txawm nyob rau hauv qis kub, uas yog ib qho tseem ceeb rau cov hlab ntsha siab uas tej zaum yuav raug rau ib puag ncig txias.
Weldability: Q345R yog qhov zoo tshaj plaws weldable yam tsis muaj kev pheej hmoo ntawm kev tawg lossis kev puas tsuaj hauv cov pob qij txha welded, kom ntseeg tau tias muaj kev ntseeg ruaj khov.
Corrosion Resistance: Txawm hais tias tsis zoo li corrosion-tiv taus zoo li stainless hlau, nws ua tau zoo nyob rau hauv cov xwm txheej kev lag luam thiab tuaj yeem siv nrog cov txheej txheem tiv thaiv.
Qib Qib:
Q345Ryog ib feem ntawmGB 713-2014txheem rau siab nkoj steel phaj nyob rau hauv Suav teb.
Tus "Q" yog hais txog tusyield zogntawm 345 MPa, thaum lub "R" qhia tias nws yog tsim los raulub nkoj siabdaim ntawv thov.
Cov khoom ntog nyob rau hauv ib chav kawm ntawmqis- hlau alloysoptimized rau lub zog thiab toughness nyob rau hauv siab -kub ib puag ncig.
Nws txawv ntawm cov qib qis xws liQ235(yield zog qis) thiabQ345(general-lub hom phiaj steel qauv) vim nws tshwj xeeb tsom rau cov hlab ntsha siab.
Kev sib piv:
Q345R vs Q460:
Q460muaj lub zog tawm los ntau dua (460 MPa) piv rau Q345R, muab cov qauv tsim muaj zog ntau dua rau cov ntawv thov xav tau.
ThaumQ460yog siv rau hnyav- lub luag haujlwm cov khoom siv,Q345Ryog tshwj xeeb tsim rau cov hlab ntsha siab thiab thermal ua daim ntawv thov, qhov twg lub zog, toughness, thiab tsis kam mus rau siab siab yog qhov tseem ceeb.Q345Rmuab lub zog ntau dua thiab tsim tshwj xeeb rau siab - qhov chaw siab, ua rau nws zoo tagnrho rau cov hlab ntsha siab thiab boilers.
Kev siv ntau yam ntawm Q345R:
Cov nkoj siab: Siv dav hauv kev lag luam xws li petrochemical, tshuaj lom neeg, thiab roj thiab roj rau khaws cia thiab ua cov kua dej hauv qab siab.
Boilers: Qhov tseem ceeb hauv kev tsim cov siab -siab chav boilers, feem ntau pom muaj nyob rau hauv fais fab nroj tsuag.
Cia Tank: Siv nyob rau hauv loj cia tso tsheb hlau luam rau cov khoom siv phom sij, xyuas kom cov tso tsheb hlau luam tuaj yeem tswj lub siab sab hauv yam tsis muaj kev poob.
Thaum tshav kub kub Exchangers: Ua hauj lwm hauv kev tsim cov khoom siv hluav taws xob hloov pauv hluav taws xob, tshwj xeeb tshaj yog nyob rau hauv kev lag luam uas muaj cov dej kub siab tshaj -.
Piping Systems: Qhov tseem ceeb tshaj plaws rau cov kav dej uas nqa cov dej siab siab -, nrog rau chav dej, dej kub, thiab tshuaj lom neeg, tshwj xeeb tshaj yog nyob rau hauv cov nroj tsuag.
Qhov cuam tshuam toughness ntawm Q345R yog dab tsi?
Q345R muaj kev cuam tshuam zoo, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias, ua rau nws resistant rau tawg thiab nkig tsis ua hauj lwm nyob rau hauv hnyav kev khiav hauj lwm ib puag ncig, uas yog ib qho tseem ceeb rau cov hlab ntsha siab mus rau lub fluctuating kub.
Q345R ua raws li cov qauv dab tsi?
Q345R feem ntau yog tswj hwm los ntawm Suavwb 713tus qauv, uas qhia txog cov khoom yuav tsum tau rau steel daim hlau siv nyob rau hauv siab hlab ntsha. Nws tseem ua tau raws li cov qauv thoob ntiaj teb xws li ASME thiab ASTM rau kev siv lub nkoj siab.
Lub zog tensile ntawm Q345R yog dab tsi?
Lub zog tensile ntawm Q345R yog li ntawm 470 MPa rau 630 MPa, uas qhia tias nws muaj peev xwm tiv taus kev ntxhov siab ua ntej tawg. Qhov no ua rau nws tsim nyog rau cov ntawv thov uas muaj siab - ib puag ncig siab.
Cov khoom siv kho tshuab ntawm Q345R sib txawv raws li phaj thickness:
| Thickness (hli) | Yield zog (MPa) | Tensile zog (MPa) | Elongation (%) | Impact Test Temp (degree) | Min. Absorbed zog (J) |
|---|---|---|---|---|---|
| Tsawg dua los yog sib npaug li 16 | Ntau dua lossis sib npaug rau 345 | 510-640 | Ntau dua lossis sib npaug li 21 | 0 | Ntau dua lossis sib npaug rau 41 (longitudinal) |
| >16-36 | Ntau dua lossis sib npaug rau 325 | 500-630 | Ntau dua lossis sib npaug li 21 | 0 | Ntau dua lossis sib npaug li 41 |
| >36-60 | Ntau dua lossis sib npaug rau 315 | 490-620 | Ntau dua lossis sib npaug li 21 | 0 | Ntau dua lossis sib npaug li 41 |
| >60-100 | Ntau dua lossis sib npaug rau 305 | 490-620 | Ntau dua lossis sib npaug li 20 | 0 | Ntau dua lossis sib npaug li 41 |
| >100-150 | Ntau dua lossis sib npaug li 295 | 480-610 | Ntau dua lossis sib npaug li 20 | 0 | Ntau dua lossis sib npaug li 41 |
| >150-250 | Ntau dua lossis sib npaug li 285 | 470-600 | Ntau dua lossis sib npaug li 20 | 0 | Ntau dua lossis sib npaug li 41 |
Main tshuaj muaj pes tsawg leeg
| C | Si | Mn | P | S | Alt (min.) |
| Tsawg dua los yog sib npaug li 0.20 | Tsawg dua los yog sib npaug li 0.55 | 1.20-1.60 | Tsawg dua lossis sib npaug li 0.025 | Tsawg dua lossis sib npaug li 0.015 | Ntau dua lossis sib npaug rau 0.020 |
1. Q345R yog dab tsi?
Q345R yog ib qho qis- alloy steel tsim los siv rau hauv cov hlab ntsha siab, boilers, thiab lwm yam khoom uas raug kub thiab siab. Nws ua tau raws li Suav GB 713 tus qauv thiab muaj cov khoom zoo weldability, siab zog, thiab tsis kam mus rau deformation nyob rau hauv siab, ua rau nws zoo tagnrho rau kev lag luam kev siv.
2. Puas yog Q345R haum rau qhov qis - qhov kub thiab txias?
Yog lawm, Q345R yog tsim los ua haujlwm zoo nyob rau hauv qis- qhov kub thiab txias. Nws qhov cuam tshuam toughness tseem siab txawm tias qhov kub thiab txias, ua rau nws xaiv qhov kev xaiv zoo rau cov hlab ntsha thiab cov khoom siv uas yuav ua haujlwm hauv cov huab cua txias.
3. Cov tshuaj muaj pes tsawg leeg ntawm Q345R yog dab tsi?
Q345R feem ntau muaj cov pa roj carbon (C), manganese (Mn), silicon (Si), phosphorus (P), sulfur (S), thiab lwm yam khoom xws li tooj liab (Cu) thiab npib tsib xee (Ni). Cov muaj pes tsawg leeg ua kom cov hlau lub zog, weldability, thiab toughness ntawm high pressures thiab kub.
4. Qhov elongation ntawm Q345R yog dab tsi?
Q345R feem ntau muaj qhov elongation ntau dua 20%. Qhov no txhais tau hais tias nws tuaj yeem ncab ntau dua 20% ntawm nws qhov ntev ntev ua ntej tawg, uas ua rau nws cov ductility thiab tsis kam mus tawg hauv siab.
5. Cov kev lag luam twg siv Q345R?
Q345R yog siv thoob plaws ntau yam kev lag luam xws li petrochemical, tsim hluav taws xob, thiab kev tsim khoom. Nws yog tshwj xeeb tshaj yog nyiam nyob rau hauv zus tau tej cov hlab ntsha siab, cia tso tsheb hlau luam, boilers, thiab piping systems uas yuav tsum tau cov ntaub ntawv uas muaj peev xwm tiv taus kub thiab siab.
6. Q345R puas tuaj yeem siv rau hauv kev tsim cov boilers?
Yog lawm, Q345R feem ntau yog siv rau hauv kev tsim kho ntawm siab -siab boilers, tshwj xeeb tshaj yog nyob rau hauv lub zog tsim cov nroj tsuag. Nws lub zog siab, toughness, thiab kub tsis kam ua rau nws zoo tagnrho rau cov kev xav tau hauv cov tshuab boiler.
7. Cov txheej txheem vuam rau Q345R yog dab tsi?
Q345R tuaj yeem welded siv cov txheej txheem ib txwm muaj xws li arc vuam, roj tungsten arc vuam (TIG), thiab roj hlau arc vuam (MIG). Preheating tej zaum yuav xav tau rau cov ntu tuab kom tsis txhob muaj qhov tsis xws luag xws li tawg.
Yog xav paub ntxiv txog GNEE cov khoom steel, tiv tauj peb ntawm info@gneesteels.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
