I. Qhov sib txawv ntawm cov khoom qauv thiab cov txheej txheem
| Lus | Nrum Hlau Li Qub (Grey Cam Khwb Cia Hlau) | Zas Hlau Li Qub |
|---|---|---|
| Kev cim cov khoom | Cim raws li HT200 (Fine graphite qauv) | Cim raws li qt450 (spheroidal graphite qauv) |
| Graphite daim ntawv | Fleake graphite, yooj yim ua rau muaj kev ntxhov siab hauv lub substrate | Spherical Graphite, Txhim Kho Matrix Cov Khoom Siv Neeg Kho Tshuab |
| Cov txheej txheem tsim khoom | Paasal Casting, tsis tuaj yeem txhawb nqa los ntawm kev kho cua sov | Tshav kub kho kom muaj zog (piv txwv li annealing) |
Ii. Kev sib piv ntawm lub cev thiab tshuab cov khoom
Ntom ntom thiab qhov hnyav
Cov kav hlau muaj qhov ntom ntom dua (7. {3-7. 4g \/ cm³) thiab lub valve hnyav dua;
Cam khwb cia hlau ceev yog qis dua (6. {8-7. 2g \/ cm³), lub valve yog lub teeb.
Cov Khoom Siv Neeg Kho Tshuab
Zas cov hlau tensile lub zog ntau dua los yog sib npaug rau 450mpa, tawm kom muaj zog dua los yog sib npaug rau 310mpa, ze rau cov pa roj carbon;
Cam khwb cia hlau tensile lub zog tsuas yog ntau dua los yog sib luag rau 200Mpa, brittleness loj dua.
Cov Khoom Tshwj Xeeb
Tuab cam khwb cia hlau kev cuam tshuam tsis kam, hnav tsis kam thiab seismic kev ua tau zoo dua, hloov mus rau qhov chaw hloov chaw;
Nrum hlau kev sib cav ua tsis taus yog qhov zoo dua, tab sis cov kev cuam tshuam tsis muaj zog, yooj yim kom tawg tsis muaj kev ua haujlwm hnyav.
III. Muaj feem ntau cov xwm txheej thiab kev khwv nyiaj txiag
| Cov Ntawv Thov | Nrum Hlau Li Qub | Zas Nrum Hlau Li Qub |
|---|---|---|
| Raug Media | Dej, chav dej, qis dua huab cua thiab roj (tsawg dua los yog sib npaug rau 1. {} Mpa) | Corrosive Media, muaj kev kub siab roj \/ kua (tsawg dua los yog sib npaug rau 42mpa) |
| Qhov ntsuas kub ntau | {{0 {} degree ~ 200 degree | -30 degree ~ 350 degree |
| Kev lag luam | Tus nqi qis rau cov pa hluav taws xob tsis tshua muaj hluav taws xob | Cov nqi siab dua tab sis zoo dua tus nqi rau nyiaj ntau dua li cam khwb cia hlau |
IV. Cov Ntsiab Lus Cim
Cov xim nto
Cov av ntawm cov hlau duc yog grey nrog hlau tawv lus;
Lub saum npoo ntawm cov hlau cam khwb cia yog tsaus grey lossis dub, yam tsis muaj qhov tseem ceeb luster.
SEC TES
Zas nrum hlau lov ua lag luam yog uniform nyiaj-gran granular;
Cam khwb cia hlau muaj ntxhib pob txha lov thiab ib puag ncig ntawm flaky graphite yuav pom.
