1. Q: Dab tsi yog yam ntxwv ntawm EN10297-2 X2CrTi12 raj, thiab lawv siv qhov twg?
A:
Khoom txhais:Seamless precision raj hauv qabTS EN 10297-2, ua los ntawmX2CrTi12(ib qho ferritic stainless hlau nrog titanium stabilization).
Cov yam ntxwv tseem ceeb:
Corrosion Resistance:Kev tiv thaiv zoo heev rau kev ntxhov siab corrosion tawg (SCC) thiab oxidation mus txog 600 degree.
Weldability:Titanium (Ti) stabilization tiv thaiv chromium carbide nag lossis daus hauv tshav kub- thaj chaw cuam tshuam (HAZ).
Daim ntawv thov:
Automotive Exhausts:Manifolds, catalytic converter vaj tsev (siab-kub durability).
Zog:Thaum tshav kub kub exchanger raj nyob rau hauv lub hnub ci thermal systems.
2. Q: Cov khoom siv dab tsi tau teev tseg rau X2CrTi12 raj hauv EN10297-2?
A:
Chav ntsuas kub:
Tensile zog:450-600 MPa.
Yield zog (Rp0.2):Ntau tshaj lossis sib npaug li 280 MPa.
Elongation (A₅):Ntau dua los yog sib npaug li 20% (kom paub tseeb tias formability).
Hardness:Tsawg dua lossis sib npaug li 220 HB.
High -Tsub Ua Haujlwm:Khaws ntau dua lossis sib npaug li 80% tawm lub zog ntawm 500 degree.
3. Q: titanium (Ti) stabilization cuam tshuam li cas ntawm cov khoom siv?
A:
Ti/C ratio:Ti Ntau dua lossis sib npaug rau 6 × (C + N) cov ntsiab lus kom ruaj khov tiv thaiv kev nkag siab.
Cov txiaj ntsig:
Tiv thaivintergranular corrosionlos ntawm kev khi cov pa roj carbon li TiC.
Khaws ductility tom qab vuam (tsis muaj HAZ brittleness).
Kev pauv - tawm:Txo me ntsis machinability vs. non- cov qhab nia ruaj khov.
4. Q: Cov tshuaj muaj pes tsawg leeg ntawm X2CrTi12 yog dab tsi?
A:
Alloy Design (wt.%):
Cr (10.5-12.5%):Muab kev tiv thaiv corrosion.
C (tsawg dua lossis sib npaug rau 0.03%):Ultra- cov pa roj carbon tsawg kom txo qis kev tsim cov carbide.
Ti (Ntau dua lossis sib npaug rau 0.30%):Stabilizing element (Ti Ntau dua lossis sib npaug rau 6 × [C + N]).
N (tsawg dua lossis sib npaug rau 0.03%):Tswj kom tsis txhob muaj nitride nag lossis daus.
5. Q: Cov ntawv pov thawj zoo thiab cov qauv siv li cas?
A:
Kev Ntsuas Cov Txheej Txheem:
Kev kuaj Corrosion:ASTM A262 Xyaum E (intergranular corrosion).
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.
PEB 2014/68/EUrau kev ua raws li cov khoom siv siab.
