ASTM A312 Tus Qauv: Kev Siv Kev Lag Luam thiab Kev Xav Tau Kev Xav Tau rau Austenimer Stainless Hlau Kav

1. Cov Qauv Txheej txheem cej luam

ASTM A312 / A312m {{{2} b (tshuaj xyuas cov khoom siv, cov khoom siv tsim khoom, khoom noj, khoom noj khoom haus, khoom siv marine engineering teb.

 

2. Cov kev xav tau cov txuj ci tseem ceeb

2.1 Cov ntaub ntawv thiab kev tsim khoom
Cov Khoom Siv Ntau Yam:
Anustenitic Stainless hlau: xws li Tp304, Tp346L, Tp347H, muaj cov chromium (ni), thiab lwm yam, thiab lwm yam.
Duplex Stainless hlau Stainless: Xws li UNS unic s31254 (254smo), haum rau cov tub sab uas muaj cov kua qaub rau hauv).
Txoj Kev Raug:
Seamless yeeb nkab: tsim los ntawm cov txheej txheem kub kub lossis cov txheej txheem kos khaub thuas kom ntseeg tau qhov tseeb thiab qhov zoo tshaj plaws.
Welded Yeeb: Tsis Siv Neeg Vuam Technology Xws Li Tig Thiab Mig Yuav Tsum Tau Kev Tshuaj Xyuas (xws li Asmorgic Soj Ntsuam (ASTM A262 Txuj Ci E).
Kev Kho Cua Sov:
Kev daws Annealing: Austenitic steel yuav tsum tau sai sai txias ntawm 1040-1100 degree los tshem tawm kev ntxhov siab thiab txhim kho corrosion tsis kam.
Kev kho mob ruaj khov: Cov qib muaj titanium (TP321h) lossis niobium (TPRACH) yuav tsum muaj kev kho cua sov ntxiv kom tiv thaiv kev txhim kho cua sov.
2.2 Tshuaj Muaj Tshuaj

2.3 dimension kam thiab kev kho mob nto
Txheej tooj uas hla kev ua kom tsis kam:
Txias Drawn Tube: thev taus ± {0}}}}}. 10 mm rau lub taub tsawg dua los yog sib npaug ntawm 88.9 hli.
Kub Rolled Tube: Totionance ± |6 mm rau txoj kab uas hla tsawg dua lossis sib npaug rau 127 hli.
Phab Ntsa Thickness kam Zam:
Cold drawn tube: tolerance + 20%/-0% for wall thickness ≤3 mm, tolerance + 22%/-0% for wall thickness >3 hli.
Nto Kho:
Sab hauv thiab sab nraud phab ntsa yuav tsum tau ua kom mechanically polished (roughness tsawg dua lossis sib npaug}. 8μm), pickled los yog passivated kom tau raws li kev lag luam huv si (zoo li kev lag luam khoom noj).

3. Cov ntsiab lus tseem ceeb

3.1 "H" qib thiab qhov ntsuas kub
Cov qib muaj "H" (xws li Tp347H, TPRANCE cov ntsiab lus lossis ntxiv rau supercritical boiler superheaters (kub tsawg dua lossis sib npaug rau 871 degree).
Cov ntaub ntawv thov daim ntawv thov: TP347 tau siv rau loj boiler Superheater leeg, thiab nws tseem tswj hwm zoo heev tiv thaiv oxidation thiab anti-corrosion thaj chaw ntawm 750 degree.
3.2 Kev Ua Lag Luam Kev Kuaj Tsis Zoo thiab Kev Tswj Xyuas Zoo
Yuav tsum tshuaj xyuas cov khoom:
Kev ntsuam xyuas hydraulic: siab tsawg dua los yog sib npaug ntawm 198.9 mm) lossis tsawg dua los yog sib npaug ntawm 31 MPA (txheej txheem> 88.9 hli).
EDDY kev sim tam sim no (ASTM E426): Tshawb xyuas cov chaw saum npoo thiab ze-nto tsis taus.
Intergranular ntsuam xyuas (ASTM A262 Txuj Ci E): Txheeb xyuas cov khoom siv tiv thaiv txhawm rau txhawm rau txhawm rau txhim kho corrosion.