1. Lo lus nug: Rau cov chaw cog tshuaj uas xav tau ultra-kev huv, yog vim li cas ASTM A270 TP316L Sanitary Tube siv?
Teb:ASTM A270 raj muaj cov tshuab polished thiab electropolished sab hauv nto rau qhov tsis tshua muaj Ra (roughness nruab nrab) tus nqi. Qhov no ultra- du tiav tiv thaiv kab mob adhesion, tso cai rau kev tu kom zoo-Hauv-Qhov chaw (CIP), thiab ua tau raws li cov qauv kev tu cev nruj ntawm cov chaw muag tshuaj thiab zaub mov & dej haus, uas cov qib yeeb nkab txheem tsis ua.
2. Lo lus nug: Thaum thauj kub, muaj zog nitric acid, yog vim li cas ASTM A312 TP304L yog qhov kev xaiv kom raug es tsis yog TP316L?
Teb:Nitric acid yog oxidizing acid. TP304L, nrog nws cov chromium siab dua - rau - npib tsib xee piv, ua pov thawj zoo dua nyob rau hauv qhov chaw muaj zog oxidizing. TP316L's molybdenum tsis yog tsuas yog tsis tsim nyog tab sis tuaj yeem ruaj khov me ntsis hauv qhov tshwj xeeb no, oxidizing heev.
3. Nqe Lus Nug: Rau cov kav dej ua kua nitrogen ntawm -196 degree, vim li cas ASTM A333 Qib 6 yuav tsum?
Teb:ASTM A333 Qib 6 yog npib tsib xee- alloyed steel (3.5% Ni) tsim tshwj xeeb rau qis- kev pabcuam kub. Cov npib tsib xee ntxiv tiv thaiv cov ductile - mus rau - kev hloov pauv uas tshwm sim hauv cov pa roj carbon steel ntawm qhov kub thiab txias, ua kom cov yeeb nkab tseem tawv thiab cuam tshuam - tiv taus, yog li tiv thaiv kev puas tsuaj rau pob txha tawg.
4. Lo lus nug: Nyob rau hauv lub refinery hydrocracker chav tsev nrog hydrogen kev pab cuam ntawm 450℃thiab 1500 psi, vim li cas ASTM A335 P11 siv?
Teb:ASTM A335 P11 yog chromium-molybdenum alloy steel (1.25Cr-0.5Mo) uas tuav lub zog siab thiab tiv thaiv hydrogen nres (blistering thiab embrittlement) ntawm qhov kub thiab txias. Nws cov alloy muaj pes tsawg leeg muab qhov tsim nyog creep zog thiab microstructural stability uas carbon hlau tsis muaj nyob rau hauv qhov kev pab cuam hnyav.
5. Nqe Lus Nug: Rau cov kav dej hauv qab hiav txwv tuav cov dej hiav txwv nrog cov tshuaj chlorides, vim li cas UNS S32205 (Duplex 2205) tau xaiv dhau tus qauv 316L?
Teb:Duplex 2205 muaj ib qho sib xyaw austenitic-ferritic microstructure, muab nws kwv yees li ob npaug ntawm cov khoom muaj zog ntawm 316L thiab superior tsis kam rau chloride-induced pitting thiab stress corrosion cracking (SCC). Qhov no ua rau nws zoo tagnrho rau ib puag ncig hnyav xws li dej hiav txwv uas 316L yuav ua tsis tau ntxov ntxov.
