1. Q: Dab tsi yog qhov tseem ceeb ntawm EN10297-2 X5CrNi18-10 raj?
A:
Khoom siv Standard:Seamless precision raj hauv qabTS EN 10297-2, sib npaugTIAB SA 304austenitic stainless hlau.
Cov yam ntxwv tseem ceeb:
Corrosion Resistance:Zoo heev hauv oxidizing ib puag ncig (PREN Ntau dua lossis sib npaug rau 18).
Qhov kub thiab txias:Haum rau -196℃rau 800℃(intermittent).
Cov ntawv thov tseem ceeb:
Kev ua tshuaj lom neeg:Kub exchangers, reactor piping.
Khoom noj / dej haus:Sanitary tubing, fermentation tanks.
2. Q: Cov khoom siv tshuab dab tsi yuav tsum tau ua los ntawm tus qauv?
A:
Raws li -Annealed Condition:
Tensile zog:500-700 MPa.
Yield zog (Rp0.2):Ntau dua lossis sib npaug li 190 MPa.
Elongation (A₅):Ntau dua lossis sib npaug li 45% (superior formability).
Hardness:Tsawg dua lossis sib npaug li 210 HB.
Cryogenic Performance:Impact toughness Ntau dua los yog sib npaug rau 100 J ntawm -196 degree.
3. Q: Cov alloy muaj pes tsawg leeg (18% Cr, 10% Ni) cuam tshuam kev ua haujlwm li cas?
A:
Cr (17.5-19.5%):Cov ntawvCr₂O₃ passive txheejrau kev tiv thaiv corrosion.
Niag (8.0–10.5%):Stabilizes austenite theem, txhim kho ductility thiab cryogenic toughness.
C (tsawg dua lossis sib npaug rau 0.07%):Siab dua 304L (X2CrNi18-9), muab lub zog zoo dua, tab sis yuav tsum tau ua tom qab vuam annealing rau cov ntawv thov tseem ceeb.
4. Q: Dab tsi yog qhov tseem ceeb ntawm kev tswj xyuas qhov zoo?
A:
Kev kuaj:
Kev kuaj Corrosion:ASTM A262 Xyaum E (intergranular).
NDT:Eddy tam sim no (EN 10246-3) rau qhov tsis xws luag.
Cov ntawv pov thawj:
EN 10204 3.1nrog cov ntaub ntawv traceability.
FDA CFR 21rau kev ua raws li kev noj zaub mov.
5. Q: Dab tsi yog qhov vuam thiab tom qab- cov txheej txheem kho?
A:
Vuam:SivAWS ER308nrog Ar+2% O₂ shielding gas.
Ncej - Weld: Anneal at 1010–1120°C for sensitized zones (if C >0.03%).
Nco ntsoov:Tsis txhob muaj sulfur- thaj chaw nplua nuj los tiv thaiv kub tawg.
