WCB valve yog dab tsi?
WCB li qub xa mus rau li qub ua los ntawm WCB cov khoom (carbon steel) raws li ASTM A216 tus qauv. WCB yog cov khoom siv hlau cam khwb cia uas paub txog nws qhov zoo heev - kub tsis kam thiab zoo weldability. Cov khoom siv no feem ntau yog siv rau hauv siab - siab thiab siab - daim ntawv thov kub, xws li chav tshuab thiab siab - cov roj hluav taws xob kub. Vim lawv cov kav ntev thiab kev ntseeg tau, WCB li qub ua lub luag haujlwm tseem ceeb hauv ntau yam txheej txheem kev lag luam thiab cov kav dej.
- Qhov kub thiab txias: Kev ua haujlwm ruaj khov ntawm-29℃rau 425 degree.
- Lub zog ua haujlwm: Tensile zog Ntau dua los yog sib npaug rau 485 MPa, txaus rau feem ntau ua hauj lwm tej yam kev mob.
- Nqe Zoo: 1/3 rau 1/2 tus nqi ntawm stainless hlau.
Dab tsi yog qhov txawv ntawm ASTM A216 WCC thiab WCB?
Material Letter txhais lus
"W": Sawv cevweldability, qhia txog cov khoom siv vuam zoo heev.
"C": Denotescasting, qhia tias cov khoom yog tsim los ntawm cov txheej txheem casting.
"B": Stands raunruab nrab -lub zog carbon cam khwb cia hlau.
Cov ntsiab lus tshuaj muaj pes tsawg leeg
Cov pa roj carbon (C): Tswj nruj kom tsawg dua lossis sib npaug li 0.30%. Cov pa roj carbon ua kom lub zog tsim nyog, thaum silicon (Si Tsawg dua lossis sib npaug li 0.60%) txhim kho lub zog, hardness, thiab oxidation kuj.
Manganese (Mn): Tsawg dua lossis sib npaug li 1.00%, nrog rau qhov siab tshaj plaws ntawm 1.28% (thaum cov ntsiab lus carbon raug txo) los txhim kho hardenability thiab toughness.
Cov khoom tsis zoo:
Phosphorus (P): Tsawg dua lossis sib npaug li 0.040%
Sulfur (S): Tsawg dua lossis sib npaug li 0.045%
Tshawb nrhiav impurities: Chromium (Cr), molybdenum (Mo), vanadium (V), npib tsib xee (Ni), thiab tooj liab (Cu) yog nruj me ntsis txwv kom ntseeg tau cov khoom purity.
WCB Cast Steel Performance Yam ntxwv
Mechanical Excellence:
Tensile zogUa haujlwm siab: 485-655 MPa
Yield zog: Ntau dua lossis sib npaug li 250 MPa
Elongation: Ntau dua lossis sib npaug li 22%
Kev cog lus: Ntau dua lossis sib npaug li 35%
Tsim yooj: Enables complex duab ntawm casting.
Tus nqi- zoo: ~ 1/3-1/2 tus nqi ntawm stainless hlau.
Daim ntawv thov: Valves, twj tso kua mis lub cev, gearboxes, structural Cheebtsam, thiab choj qhov chaw.
WCC Cast Steel Performance Yam ntxwv
Cov tshuaj sib txawvCov ntsiab lus carbon ntau dua (0.25–0.35%).
Zoo sib xws zog:
Tensile zogUa haujlwm siab: 485-620 MPa
Yield zog: Ntau dua lossis sib npaug li 275 MPa
Kev siv dav dav
WCB (sib npaug rau Tuam Tshoj ZG280-520) yog siv rau hauv cov khoom tseem ceeb (valve, flanges) rau roj, tshuaj, thiab fais fab kev lag luam.
Kev ua tau zoo tshaj plaws yuav tsum muaj kev tsim qauv, kev siv tshuab, thiab kev kho cua sov kom haum rau kev ua haujlwm.
Tiv tauj peb rau wcb valve hnub ntawv