SA516Gr70 (ASME SA516 Qib 70) steel yog cov pa roj carbon steel phaj rau nruab nrab thiab qis kub siab cov hlab ntsha, thiab cov qauv siv yog ASME SA-516 / SA-516M (uas yog tag nrho sib npaug rau ASTM txuj A516 / A516M-10).
Q345R steel belongs rau Suav tus qauv boiler thiab siab nkoj steel phaj, tus qauv siv: GB713-2014.
Ob lub SA516Gr70 steel thiab Q345R steel yog cov phaj siab. Qhov sib txawv ntawm SA516Gr70 thiab Q345R muaj cov ntsiab lus hauv qab no.
Kev sib piv ntawm SA516Gr70 thiab Q345R cov khoom tsim thiab xa khoom
SA516Gr70 steel manufacturing txheej txheem yog tua hlau, thiab yuav tsum tau raws li qhov yuav tsum tau ntawm A20 / A20M tus qauv zoo austenite grain loj. Lub thickness tsawg dua los yog sib npaug rau 40mm feem ntau yog xa hauv lub xeev ntawm kub dov, thiab steel phaj siab dua 40mm yuav tsum normalized. Tshwj tsis yog txwv tsis pub teev los ntawm tus neeg yuav khoom, thaum yuav tsum tau ntsuas qhov kev sib tw toughness rau lub phaj steel nrog lub thickness ntawm 40 mm los yog tsawg dua, lub phaj steel yuav tsum normalized.
Q345R steel manufacturing txheej txheem yog smelted los ntawm oxygen converter los yog hluav taws xob rauv, thiab yuav tsum tau refined sab nraum lub cub tawg, feem ntau xa nyob rau hauv kub dov, tswj dov, normalizing lub xeev.
Los ntawm kev sib piv, SA516Gr70 steel khoom tsim thiab kev xa khoom yog nruj dua.
Kev sib piv ntawm cov tshuaj muaj pes tsawg leeg ntawm SA516Gr70 thiab Q345R steel
SA516Gr70 steel muaj pes tsawg leeg yuav tsum:
Cov pa roj carbon (phaj tuab tsawg dua lossis sib npaug li 12.5mm) Cov ntsiab lus Tsawg dua lossis sib npaug li 0.27%
Cov pa roj carbon (phaj tuab ntawm 12.5mm -50mm) Tsawg dua lossis sib npaug li 0.28%
Carbon (thickness ntawm 50mm thiab 100mm) Tsawg dua los yog sib npaug rau 0.30%
Carbon (thickness ntau dua 100mm) Cov ntsiab lus Tsawg dua lossis sib npaug li 0.31%
Manganese cov ntsiab lus 0.85-1.20
Cov ntsiab lus phosphorus Tsawg dua lossis sib npaug rau 0.025%
Cov ntsiab lus sulfur Tsawg dua lossis sib npaug rau 0.025%
Silicon cov ntsiab lus 0.15-0.40
Lus Cim: Rau txhua qhov kev txo qis ntawm 0.01% qis dua cov ntsiab lus siab tshaj plaws ntawm cov pa roj carbon monoxide, qhov kev txwv sab saud ntawm cov ntsiab lus siab tshaj plaws ntawm manganese tuaj yeem nce ntxiv los ntawm 0.06%, qhov siab tshaj plaws tso cai smelting tsom xam yog 1.5%, thiab qhov siab tshaj plaws tso cai tshuaj ntsuam xyuas yog 1.6%.
Q345R steel muaj pes tsawg leeg yuav tsum:
C: Tsawg dua lossis sib npaug rau 0.20, Si: Tsawg dua lossis sib npaug rau 0.55, Mn: 1.20-1.70, P: Tsawg dua lossis sib npaug 0.025, S: Tsawg dua lossis sib npaug 0.010, Cu: Tsawg dua lossis sib npaug 0.30, Ni: Tsawg dua lossis sib npaug li 0.3, Moess dua lossis sib npaug li 0.3 Tsawg dua lossis sib npaug rau 0.08, Nb: Tsawg dua lossis sib npaug rau 0.050, V: Tsawg dua lossis sib npaug 0.050, Ti: Tsawg dua lossis sib npaug rau 0.030, Alt: Ntau dua lossis sib npaug rau 0.020, lwm yam Cu + Ni + Cr + Mo Tsawg dua lossis sib npaug rau 0.70
Los ntawm kev sib piv cov tshuaj muaj pes tsawg leeg, cov tshuaj muaj pes tsawg leeg ntawm ob muaj ib qho chaw sib xws, tab sis Q345R muaj qhov yuav tsum tau muaj rau kab kawm, thiab kev tswj xyuas qis dua ntawm cov piam thaj thiab phosphorus.
Kev sib piv ntawm cov khoom siv kho tshuab ntawm SA516Gr70 thiab Q345R steel
Muab piv cov khoom tensile ntawm SA516Gr70 steel thiab Q345R, nws tuaj yeem pom tau tias Q345R siab dua SA516Gr70, tab sis Charpy cuam tshuam qhov kub ntawm SA516Gr70 qis dua, qhia tias SA516Gr70 tuaj yeem siv rau hauv ib puag ncig ntawm rho tawm 46 degrees. Q345R tau teev nyob rau hauv lub teb chaws tus qauv 713 tuaj yeem ua Charpy rho tawm 20 degrees cuam tshuam. Q345R tsim cov paib cuam tshuam ntawm rho tawm 40 degrees hauv ib tus neeg hauv tsev steel mills.
Tseem Ceeb Similarities & Differences
Lub Hom Phiaj: Ob qho tib si yog tsim los rau qhov hnyav zoo sib xws - lub luag haujlwm siab tswj.
Lub zog: Zoo heev cov khoom siv kho tshuab, nrog Q345R feem ntau muaj lub zog me ntsis siab dua cov txiaj ntsig.
Daim Ntawv Thov: Hloov pauv tau hauv ntau qhov haujlwm thoob ntiaj teb uas cov qauv tso cai, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov hlab ntsha siab.
