1. Q: Dab tsi txhais tau hais tias EN10297-2 X6CrNiTi18-10 raj, thiab qhov twg yog qhov tseem ceeb?
A:
Khoom siv Standard:Seamless precision raj hauv qabTS EN 10297-2, ua los ntawmX6CrNiTi18-10(ib titanium-stabilized austenitic stainless hlau, sib npaug rau AISI 321).
Cov yam ntxwv tseem ceeb:
Stabilization:Titanium (Ti) tiv thaiv chromium carbide nag lossis daus thaum vuam (Ti Ntau dua lossis sib npaug rau 5 × C cov ntsiab lus).
Kub Resistance:Haum rau kev pabcuam txuas ntxiv mus txog800 degree(nruab nrab rau 900 degree).
Daim ntawv thov:
Aerospace:Exhaust manifolds, dav hlau cav Cheebtsam.
Tshuaj:Catalytic converter plhaub, pyrolysis raj.
2. Q: Cov khoom siv tshuab dab tsi yuav tsum tau ua los ntawm tus qauv?
A:
Raws li -Annealed State:
Tensile zog:520-720 MPa.
Yield zog (Rp0.2):Ntau tshaj lossis sib npaug li 200 MPa.
Elongation (A₅):Ntau dua los yog sib npaug li 40% (zoo heev rau txias- sib sau).
Hardness:Tsawg dua lossis sib npaug li 215 HB.
High -Tsub Ua Haujlwm:Khaws ntau dua lossis sib npaug li 65% tawm lub zog ntawm 750 degree.
3. Q: titanium (Ti) stabilization ua haujlwm li cas?
A:
Ti/C ratio:Ti Ntau dua lossis sib npaug rau 5 × (C + N) los khi cov pa roj carbon zoo liTiC, tiv thaiv rhiab heev hauv tshav kub- thaj chaw cuam tshuam (HAZ).
Cov txiaj ntsig:
Tshem tawm qhov xav tau rau kev tshaj tawm -weld annealing feem ntau.
Txhim kho creep tsis kam ntawm qhov kub thiab txias.
Kev pauv - tawm:Me ntsis txo machinability vim nyuaj TiC hais.
4. Q: Cov tshuaj muaj pes tsawg leeg thiab kev tswj tsis huv yog dab tsi?
A:
Alloy Design (wt.%):
Cr (17.0-19.0%):Base corrosion kuj.
Niag (9.0–12.0%):Austenite stabilization.
Ti (Ntau dua lossis sib npaug rau 0.40%):Stabilizing element (Ti Ntau dua lossis sib npaug rau 5 × [C + N]).
C (tsawg dua lossis sib npaug rau 0.08%):Tswj kom txo qis kev tsim TiC.
Tseem ceeb txwv: P/S Tsawg dua lossis sib npaug li 0.040%kom tsis txhob kub tawg.
5. Q: Cov ntawv pov thawj thiab cov ntawv pov thawj zoo li cas?
A:
Kev Ntsuas Cov Txheej Txheem:
Kev kuaj Corrosion:ASTM A262 Xyaum E (intergranular) + ASTM G28 Txoj Kev A (acid exposure).
NDT:Phaseed -array UT (EN ISO 17640) rau kev ncaj ncees weld.
Cov ntawv pov thawj:
EN 10204 3.2nrog tag nrho traceability.
ASME SWB-688rau kev siv nuclear / siab.
