Thaum muab piv cov hlau nplaum cam khwb cia hlau thiab hlau hlau, nws yog ib qho tseem ceeb kom nkag siab tias thaum lub sij hawm cam khwb cia thiab haum rau cov ntawv thov sib txawv. Ntawm no yog cov ncauj lus piav qhia:
1. Cov khoom siv muaj pes tsawg leeg thiab cov qauv
Mallable cam khwb cia hlau:
Composition:Mallable cam khwb cia hlauyog tsim los ntawm tshav kub-kho cov hlau cam khwb cia zas, uas muaj cov pa roj carbon monoxide hauv daim ntawv ntawm carbide (FE3C). Kev kho cua sov, hu ua anealing, tawg cia cov hlau carbide, tso cai rau cov pa roj carbonite hauv daim ntawv nodular lossis rosette.
Tus qauv: Qhov anealing txheej txheem hloov microstructure ntawm cov hlau, uas ua rau me me, tsis xwm yeem cov kab graphite me me. Tus qauv no muab cov khoom siv nrog qee qhov sib luag thiab tawv, ua rau nws muaj me tshaj li hlau pov tseg.
Das Hlau:
Kev Sau Tseg: Hlau Hlau, tseem hu ua nodular lossis spheroid graphite hlau, yog tsim los ntawm kev ntxiv nodulizing ntsiab xws li magnesium lossis cov hlau ua ntej ua ntej ua. Cov ntsiab no ua rau cov pa roj carbon ua los ua cov tshuaj ua kom zoo li spheroidal (puag ncig) graphite nodules.
Tus qauv: Tus qauv sib dhos ntawm cov hlau sib dhos hauv cov hlau sib dhos txhim kho nws cov qauv thiab cuam tshuam nws cov hlau siab dua piv rau malleable cov hlau.
2. Cov Khoom Siv Neeg Kho Tshuab
Mallable cam khwb cia hlau:
Lub zog tensile: Mallable cam khwb cia hlau muaj qhov muaj zog tensile lub zog, feem ntau yog kwv yees li 350 txog 450 mpa (megapualals).
Ductility: Nws muaj lub zog tsim nyog, uas tso cai rau nws khoov lossis deform hauv kev ntxhov siab yam tsis muaj kev tawg. Qhov no ua rau nws haum rau cov ntawv thov uas yuav tsum tau hloov pauv qee yam.
Kev Cuam Tshuam: Thaum nws yog kev sib tw nruj dua li hlau, mallable cam khwb cia hlau yog tsawg tsis cuam tshuam-tiv taus rau cov hlau coo.
Das Hlau:
Lub zog tensile: ductile cov hlau muaj lub zog tensile siab dua, feem ntau yog kwv yees li 400 rau 800 mpa, nyob ntawm qib thiab kev kho cua sov.
Ductility: Nws yog condile heev, nrog kev pab cuam elongation feem ntau ntawm 10% thiab 20%, lub ntsiab lus nws tuaj yeem ncab tau ua ntej poob.
Kev Cuam Tshuam: Zas Hlau Tseem paub txog nws cov kev cuam tshuam zoo, ua rau nws zoo tagnrho rau cov ntaub ntawv thauj khoom lossis kev ntxhov siab siab.
3. Kev thov
Mallable cam khwb cia hlau:
Feem siv siv: Mallable cam khwb cia hlau feem ntau siv nyob rau hauv me me, ntau intricte cov fittings xws li cov khoom siv hluav taws xob, thiab muaj qee yam hloov tau.
Cov chaw ib puag ncig: Nws nquag siv nyob rau hauv cov kav dej, roj piping, thiab cov ntawv thov teeb. Cov khoom siv muaj peev xwm nqus tau poob siab thiab tshee ua rau nws haum rau kev teeb tsa nrog kev nthuav dav lossis kev nthuav dav.
Das Hlau:
Feem ntau siv cov khoom siv: vim nws lub zog zoo dua thiab cov hlau tou hauv cov ntawv siv ntau dua xws li cov tshuab hluav taws xob ntau dua xws li cov tshuab hluav taws xob, lub zog), cov txheej txheem hnyav hauv kev tsim kho.
Cov neeg siv hluav taws xob ib txwm muaj: cov hlau tiv nrho yog qhov zoo tagnrho rau kev siv hauv cov tshuab hluav taws xob siab, thiab cov dej pheebsium, qhov twg cov khoom siv hluav taws xob kev ntxhov siab lossis hnav.
Tag
Malleable hlau thiab ductile hlau tsis zoo ib yam. Lawv txawv hom cam khwb cia hlau nrog cov khoom sib txawv thiab cov ntawv thov.
Malleable hlau yog haum rau cov ntawv thov tsawg dua qhov twg tus nqi-ua tau zoo thiab muaj cov kws kho mob hnyav yog qhov txaus.
Hauv kev sib piv, hlau hlau yog xaiv rau cov chaw sib tw ntau qhov chaw uas siab dua lub zog, ductility, thiab kev cuam tshuam yuav tsum muaj.
Lub Sijhawm Post: Lub Yim Hli 24-2024