Thaum sib piv cov hlau cam khwb cia hlau thiab cov hlua hlau, nws yog ib qho tseem ceeb kom nkag siab tias thaum ob qho tib si yog hom cam khwb cia hlau, lawv muaj cov khoom sib txawv thiab tsim nyog rau kev siv sib txawv. Nov yog qhov kev sib piv ntxaws:
1. Cov khoom sib xyaw thiab cov qauv
Malleable Cam khwb cia hlau:
Kev sib xyaw:Malleable cam khwb cia hlauyog tsim los ntawm tshav kub-kho dawb cam khwb cia hlau, uas muaj carbon nyob rau hauv daim ntawv ntawm hlau carbide (Fe3C). Kev kho cua sov, hu ua annealing, rhuav tshem cov hlau carbide, tso cai rau cov pa roj carbon monoxide rau hauv daim ntawv nodular lossis rosette.
Structure: Cov txheej txheem annealing hloov lub microstructure ntawm cov hlau, ua rau me me, irregularly zoo li graphite hais. Cov qauv no muab cov khoom siv nrog qee qhov ductility thiab toughness, ua rau nws tsawg dua li cov hlau cam khwb cia.
Hlau Hlau:
Muaj pes tsawg leeg: Cov hlau hlau, tseem hu ua nodular lossis spheroidal graphite hlau, yog tsim los ntawm kev ntxiv nodulizing ntsiab xws li magnesium los yog cerium rau molten hlau ua ntej casting. Cov ntsiab lus no ua rau cov pa roj carbon zoo li spheroidal (round) graphite nodules.
Structure: Lub spherical graphite qauv nyob rau hauv cov hlau ductile txhim khu nws ductility thiab cuam tshuam tsis kam, muab nws superior txhua yam khoom piv rau malleable hlau.
2. Mechanical Properties
Malleable Cam khwb cia hlau:
Tensile Strength: Malleable cam khwb cia hlau muaj lub zog tensile nruab nrab, feem ntau yog li ntawm 350 txog 450 MPa (megapascals).
Ductility: Nws muaj qhov tsim nyog ductility, uas tso cai rau nws khoov lossis deform nyob rau hauv kev ntxhov siab yam tsis muaj kev tawg. Qhov no ua rau nws haum rau cov ntawv thov uas yuav tsum muaj qee qhov hloov pauv.
Impact Resistance: Thaum nws yog tawv dua li cov cam khwb cia hlau, malleable cam khwb cia hlau tsis tshua muaj kev cuam tshuam-resistant piv rau cov hlau ductile.
Hlau Hlau:
Tensile Strength: Cov hlau muaj zog tensile ntau dua, feem ntau ntawm 400 txog 800 MPa, nyob ntawm qib thiab kev kho cua sov.
Ductility: Nws yog ductile heev, nrog elongation feem pua ntawm 10% thiab 20%, txhais tau tias nws tuaj yeem ncab ntau ua ntej tawg.
Impact Resistance: Ductile hlau paub txog nws cov kev cuam tshuam zoo heev, ua rau nws zoo tagnrho rau cov ntawv thov raug rau kev thauj khoom hnyav lossis kev ntxhov siab.
3. Cov ntawv thov
Malleable Cam khwb cia hlau:
Kev Siv Feem Ntau: Malleable cam khwb cia hlau feem ntau yog siv rau hauv me me, ntau intricate castings xws li cov yeeb nkab fittings, brackets, thiab kho vajtse qhov twg lub zog nruab nrab thiab ib co yooj yuav tsum tau.
Ib puag ncig ib puag ncig: Nws yog feem ntau siv hauv cov kav dej, kav dej, thiab kev siv lub teeb. Cov khoom muaj peev xwm nqus tau cov kev poob siab thiab kev vibrations ua rau nws tsim nyog rau kev teeb tsa uas muaj kev txav mus los lossis thermal expansion.
Hlau Hlau:
Kev Siv Feem Ntau: Vim nws lub zog zoo dua thiab muaj zog, cov hlau nplaum yog siv rau hauv cov ntawv loj thiab xav tau ntau dua xws li cov khoom siv tsheb (xws li, crankshafts, gears), cov kav dej hnyav, thiab cov khoom siv hauv kev tsim kho.
Ib puag ncig ib puag ncig: Cov khoom siv hlau yog qhov zoo tagnrho rau siv hauv cov kav dej siab, dej thiab dej phwj tuaj, thiab cov xwm txheej uas cov khoom raug cuam tshuam los ntawm kev ntxhov siab lossis hnav.
Xaus
Malleable hlau thiab ductile hlau tsis zoo ib yam. Lawv yog cov sib txawv ntawm cov cam khwb cia hlau nrog cov khoom sib txawv thiab kev siv.
Malleable hlau yog tsim rau cov ntawv thov tsawg dua qhov uas tus nqi siv tau zoo thiab cov khoom siv tshuab nruab nrab txaus.
Hauv qhov sib piv, cov hlau nplaum raug xaiv rau qhov nyuaj dua qhov chaw uas yuav tsum muaj zog dua, ductility, thiab kev cuam tshuam.
Post lub sij hawm: Aug-24-2024