1. Lus nug:Dab tsi yog thawj daim ntawv thov rau SA-210 Qib A1 carbon steel boiler raj?
Teb:SA-210 A1 feem ntau yog siv rau hauv kev lag luam thiab lwm yam qis- qhov kub thiab txias ntawm boilers qhov chaw siab yog qhov tseem ceeb tab sis qhov kub ua haujlwm tsis siab dhau. Nws cov nqi-zoo ua rau nws haum rau cov ntawv thov no.
2. Lus nug:Vim li cas SA-213 T11 yog qhov kev xaiv zoo tshaj plaws rau superheater thiab reheater raj?
Teb:SA-213 T11 (1.25Cr-0.5Mo) muaj kev tiv thaiv zoo rau oxidation thiab creep lub zog ntawm qhov kub txog li 1000℃F (540 degree), ua rau nws zoo tagnrho rau cov seem raug tshav kub nruab nrab.
3. Lus nug:Dab tsi yog qhov tseem ceeb ntawm kev txhawj xeeb thaum vuam SA-213 T22 (2.25Cr-1Mo) raj?
Teb:Ib qho kev txhawj xeeb tseem ceeb yog kev tsim cov tawv, tawg -ssceptible martensite nyob rau hauv lub tshav kub-Teb chaws cuam tshuam (HAZ). Qhov no yuav tsum muaj kev tswj hwm nruj ntawm preheat thiab post-weld heat treatment (PWHT) kom npau taws rau martensite thiab xyuas kom muaj kev sib koom ua ke.
4. Lus nug:Dab tsi muab SA-213 T91 (9Cr-}1Mo-V) nws lub zog kub kub zoo dua piv rau T22?
Teb:Qhov sib ntxiv ntawm vanadium (V) thiab niobium (Nb) hauv T91, nrog rau kev kho cua sov tshwj xeeb thiab tempering, tsim kom zoo -grained martensitic qauv nrog zoo heev creep zog ntawm kub txog 1150℃F (620℃).
5. Lus nug:Cov ntsiab lus chromium hauv SA-213 TP304H stainless hlau tau txais txiaj ntsig li cas boiler ua haujlwm?
Teb:Cov ntsiab lus chromium siab (18-}20%) muab oxidation zoo heev thiab corrosion kuj nyob rau hauv high-temperature ib puag ncig, xws li nyob rau hauv superheaters, tso cai rau cov chav kub kub tsis muaj tube degradation.
