| Sa202 Qib BTshuaj Muaj Tshuaj | |||||
| Teem nqi | Lub caij max (%) | ||||
| C | Si | Mn | P | S | |
| Sa202 Qib B | 0.25 | 0.54-0.90 | 0.97-1.52 | 0.035 | 0.035 |
| Teem nqi | Sa202 Qib BCov Cuab Yeej Cuab Yeej Cuab Yeej | |||
| Qhov tuab | Pub | Lub tensile | Elongation | |
| Sa202 Qib B | lub hli | Min MPa | MPa | Min% |
| 6-50 | 325 | 587-760 | 18% | |
| 50-100 | 325 | 587-760 | 15% | |
Q1:Dab tsi kub-siab qhov kev txwv tsis pub dhau saws txawv sa202 Qib b?
ASME Tshooj Viii d d div .1 Daim Ntawv Pov Thawj:
Qhov siab tshaj plaws kub:345℃(650℃f) rau kev ua haujlwm txhawb nqa
Siab Ntsuam Xyuas:Txog li 10MPA ntawm 300℃(uts ntau dua los yog sib npaug rau 485mpa)
Hydrogen Service:Raws li NACE MR0175 txog li 230 degree
Kev Kuaj Tshwj Xeeb:Yuav tsum tauKev Ntsuas Cov Kev Ntsuas Hluav Taws Xob (>100hrs ntawm 450 degree)
Q2:Lub CL-Mo muaj pes tsawg leeg kev ua tau zoo?
Alloy Tsim:
Chromium (CR):{{0 {}}% (oxidation tsis kam)
Molybdenum (MO):{{00.45-0.60% (lub zog nkag)
Vanadium (v):{{0 {}}% (nag lossis daus ua kom tawv)
Cov txiaj ntsig tau teeb meem microstructure:
Tempered BainiteTus qauv nrog 300-350 hv hardness
Lub zog nkag los ntawm lub zog:100MPA ntawm 100, 000 hrs (500 degree)
Q3:Dab tsi vuam cov txheej txheem tseem ceeb rau cov nkoj zeb?
Hydrogen Service Vuam Raws Cai:
Preheat:{{0 {}}℃(saib xyuas ntawm thermocouples)
Consumables:Aws Aws A5.28 E 8018- b2 (2.25Cr {{4} mo)
Interpass tswj:Tsawg dua lossis sib npaug nrog 300℃nrog 15-25 kj / cm pib tawm tswv yim
Kev kho mob weld:
Yuav tsum tau PWHT:{{0 {}}℃rau 1hr / 25mm thickness
Hardness tswj:Tsawg dua los yog sib npaug rau 225hb hauv haz
Cim npe nrov: ASME Sa202 Qib B Rau Cov Hlab Siab Phem Phaj, Tuam Tshoj Asme Sa202 Qib Ben Rau Cov Hlua Siab Phaj Chaw Tsim Tshuaj, Chaw muag khoom, Hoobkas
