1. Lus nug:Dab tsi yog qhov teeb meem tshwm sim thaum khoov SA-213 T91 hlab thaum tsim khoom?
Teb:Txias dabtsi yog khoov yam tsis muaj kev kho cua sov tom ntej tuaj yeem ua rau muaj kev ntxhov siab ntxiv thiab hloov cov qauv tempered martensite, cuam tshuam tsis zoo rau lub raj lub neej. Kev tswj nruj ntawm kev khoov thiab PWHT yog qhov tseem ceeb.
2. Lus nug:Qhov microstructure ntawm SA-213 T5 (5Cr-0.5Mo) txawv li cas ntawm T22?
Teb:Ob leeg yog ferritic, tab sis T5 muaj cov ntsiab lus chromium qis. Nws cov bainitic microstructure muab lub zog zoo, tab sis nws cov oxidation kuj qis dua T22, txwv nws qhov siab tshaj plaws kev pabcuam kub.
3. Lus nug:Dab tsi yog qhov zoo ntawm kev siv SA-209 T1a rau kev siv boiler?
Teb:SA-209 T1a yog cov pa roj carbon-molybdenum steel uas muaj lub zog zoo dua ntawm qhov kub siab dua li cov pa roj carbon zoo li SA-210, ua rau nws muaj txiaj ntsig zoo rau qhov ntsuas kub me ntsis zoo li qee cov qib superheater.
4. Lus nug:Dab tsi ntawm corrosion yog SA-213 TP410 raug rau hauv ib puag ncig boiler?
Teb:Raws li martensitic stainless hlau, TP410 yog qhov ua rau muaj kev cuam tshuam dav dav, pitting, thiab kev ntxhov siab corrosion tawg nyob rau hauv aqueous ib puag ncig, tshwj xeeb tshaj yog nrog cov chlorides tam sim no. Nws tsis yog feem ntau siv rau qhov chaw siab hauv niaj hnub siab - siab boilers vim li no.
5. Lus nug:Thaum tshuaj xyuas SA-335 P22 piping, dab tsi yog ib txoj hauv kev NDE kom pom kev puas tsuaj?
Teb:Replication metallography yog ib qho uas tsis yog -kev ntsuam xyuas kev puas tsuaj (NDE) txheej txheem. Nws koom nrog kev noj nyob rau hauv - qhov kev xav ntawm cov yeeb nkab saum npoo los tshuaj xyuas cov txheej txheem hauv qab lub tshuab tsom rau cov cim qhia ntawm creep cavitation thiab tawg.
