Dab tsi yog Stba12? Dab tsi yog nws cov ntsiab lus txhais?
Stba12 yog ib tug carbon - molybdenum alloy steel raj rau boilers thiab tshav kub sib pauv, raws li txhais nyob rau hauv Japanese muaj kev pab cuam tus qauv (JIS). Nyob rau hauv nws lub npe, "stb sawv ntsug rau" steel raj rau "steel raj rau boiler," "" "Steels rau Alloy Steel, thiab" 12 "yog nws tus qauv tsim qauv. Cov hlau no yog qhov tseem ceeb qhov tsawg- Alloy Alloy Alloy Alloy alloy keeb kwm, uas imparts zoo tshaj cov roj ntsha hlau. Yog li ntawd, nws tau tsim tshwj xeeb rau siv cov cuab yeej siv cov cuab yeej ua haujlwm hauv siab {{}} kub thiab siab}}}}}}} cov chaw siab. To taub txog cov keeb kwm yav dhau ntawm nws tus qauv JIS yog thawj kauj ruam to taub nws daim ntawv thov.
Tus qauv thoob ntiaj teb no ua rau tus mob International Nws cuam tshuam li cas rau cov qauv zoo sib xws?
Stba12 feem ntau adheres rau tus qauv Japanese muaj JIS G 3462, muaj cai "Alloy Steel leeg rau boilers thiab tshav kub hloov." Txawm hais tias muab tau los ntawm tus qauv Japanese, nws cov tshuaj muaj kuab lom thiab cov kws kho mob tau zoo heev rau cov qauv zoo sib xws hauv ntau tus qauv hauv ntiaj teb. Piv txwv li, nws yog sib zog thiab hloov tau yooj yim nrog Tuam Tshoj 15mo3 (GB 5310), Lub teb chaws Yelemees}}}}}}}}}}} t t3, thiab Tebchaws Asmeskas AT209 T1A. Qhov kev sib txheeb no pab txhawb kev ua haujlwm thoob ntiaj teb thiab daim ntawv thov ntawm STBA12, ntsib cov kev cai ntawm ntau cov tub rog thiab cov phiaj xwm.
Dab tsi yog qhov tshwj xeeb tshuaj lom neeg ntawm STBA12? Lub luag haujlwm ntawm txhua lub caij yog dab tsi?
Stba12 cov tshuaj lom neeg muaj kev xav tau ntau yam yuav tsum tau ua: cov ntsiab lus carbon (lab) Qhov tseem ceeb tshaj plaws yog Molybdenum (mo), nrog cov ntsiab lus ntawm 0.40-0.60%. Qhov kev sib ntxiv ntawm MO tau txhim kho cov hlau kub thiab lub zog ua kom muaj zog, ua rau nws tsis txaus ntseeg thiab tsis ua haujlwm ntawm cov kub. Lwm cov ntsiab lus, xws li cov manganese thiab silicon, feem ntau yog ntxiv dag zog rau cov khoom siv tag nrho cov khoom siv tag nrho.
Dab tsi yog cov khoom siv tshwj xeeb rau cov khoom lag luam rau STBA12?
Raws li JIS G 3462 tus qauv, STBA12 yeeb nkab muaj cov specifications rau nws cov khoom siv hauv chav tsev. Nws lub zog tensile yuav tsum tsis pub tsawg tshaj 415 MPa, thaum nws cov nyiaj tau los ntawm lub zog lossis cov yas elongation yas yuav tsum tsis pub tsawg tshaj 205 MPa. Tus qauv kuj tseem qhia qhov tsawg kawg nkaus kom ntseeg tau cov khoom muaj cov khoom siv txaus thiab tawv kom tiv thaiv tau loj. Cov ntaub ntawv kev ua tau zoo no yog cov qauv tseem ceeb uas cov kws tsim qauv tsim tawm thaum suav nrog cov yeeb nkab muaj zog, ua kom muaj kev nyab xeeb thiab kev ntseeg tau ntawm cov khoom siv.
Dab tsi ntawm cov cuab yeej thiab cov khoom lag luam yog STBA12 feem ntau siv rau?
Stba12 muaj cov ntawv thov tseem ceeb thiab tseem ceeb hauv kev tsim cov kev siv lub siab xws li superheaters, rov ua dua tshiab, thiab cov nyiaj txiag hauv cov fais fab nroj tsuag boilers. Lub Stba12 kuj tseem siv dav hauv ntau yam cua sov sib pauv, cov hws, thiab cov raj kav dej hauv petrochemical. Nws yog qhov zoo tagnrho rau cov chaw ib puag ncig nrog rau nruab nrab- {6} Cov qib siab (kwv yees li 450 degree) thiab nruab nrab}- siab}} kub siab. Nws qhov kev ntseeg tau ncaj qha ncaj qha ntsig txog qhov ntev-} Term Kev Nyab Xeeb Kev Nyab Xeeb ntawm tag nrho cov zog lossis chav lim dej.
