1. Q: Cov cuab yeej cuab tam tseem ceeb rau SA210C qib yeeb nkab yog dab tsi?
A:Raws li ASME tus qauv, SA210C yeeb nkab yuav tsum tau raws li qhov tsawg kawg nkaus tensile lub zog ntawm485 MPa ua, qhov tsawg kawg nkaus tawm lub zog ntawm275 MPa rau, thiab qhov tsawg kawg nkaus elongation ntawm30%-2-5. Nws qhov siab tshaj plaws hardness yuav tsum tsis pub tshaj 179 HB-5.
2. Q: Dab tsi yog qhov kev hloov pauv ntawm metallurgical pom hauv cov raj SA210 ua tsis tiav tom qab siv sijhawm ntev -?
A:Kev tshawb fawb ntawm cov hlab ntsha ua tsis tau zoo qhia qhov tseem ceebnplej loj hlobpiv rau cov ntaub ntawv nkauj xwb-4. Cov qauv zoo ferrite-pearlite coarsens dhau sijhawm nyob rau hauv thermal raug thiab kev ntxhov siab, ua rau cov khoom tsis muaj zog. Tsis tas li ntawd, kev tsim thiab spheroidization ntawm carbide thiab oxidation tuaj yeem pom-4.
3. Q: Dab tsi yog ib qho ntawm feem ntau ua rau tsis ua hauj lwm hauv SA210 dej- cov phab ntsa hauv cov tshuab fais fab?
A:Ib qho ua rau ua tsis tiav yognyob rau hauv - deposit corrosion (los yog scale-induced corrosion) ntawm phab ntsa sab hauv-10. Qhov no feem ntau yog txuas ncaj qha rauntev - lub sij hawm tsis zoo boiler dej tsis zoo, uas ua rau scale tsim thiab tsim ib cheeb tsam corrosive ib puag ncig hauv qab cov deposits-10.
4. Q: Dhau li ntawm - tso nyiaj corrosion, dab tsi lwm yam kev puas tsuaj yog qhov tseem ceeb rau SA210 cov kav dej hauv siab - kev pabcuam kub?
A: Ntsigyog ib qho tseem ceeb tsis ua hauj lwm mechanism. Thaum cov hlab raug kub ntawm qhov kub ntawm 450-510℃rau ncua sij hawm nyob rau hauv kev ntxhov siab, lawv muaj peev xwm maj mam thiab mus tas li deform, nws thiaj li ua rau rupture-4. Microstructural degradation zoo li carbide coarsening accelerates tus txheej txheem no.
5. Q: Cov tshuaj muaj pes tsawg leeg ntawm SA210C txawv ntawm SA210 A-1 li cas, thiab cov txiaj ntsig zoo li cas?
A:Qhov sib txawv tseem ceeb yog carbon (C) thiab manganese (Mn) cov ntsiab lus. SA210C muaj cov pa roj carbon ntau dua (txog 0.35% vs . 0.27% rau A-1) thiab ntau dua manganese ntau-5-7. Qhov no muaj pes tsawg leeg muab SA210C nwssiab tensile thiab yield zogpiv rau A-1 qib-2.
