Txoj kev los txiav txim qhov loj me thiab qhov ntau ntawm daim ntawv thov ntawm Dawb Corundum Abrasives
Dawb corundum abrasive yog ib hom khoom siv abrasive, nws txoj kev tsim khoom yog qhov nyuaj heev, ua los ntawm cov txheej txheem tshwj xeeb melting, thiab tom qab ntawd los ntawm kev sib tsoo thiab kev sib nqus, sib nqus sib nqus rau hlau thiab lwm yam txheej txheem, tshuaj xyuas rau hauv ntau qhov me me, cov xim dawb corundum. qhov loj me, yuav ua li cas thiaj kuaj tau nws? Nov yog cov ntsiab lus tshwj xeeb los piav qhia txog ntau txoj hauv kev:
(1) kev tshuaj ntsuam xyuas. Qhov zoo: yooj yim, intuitive, tus nqi qis ntawm cov khoom siv, feem ntau siv rau cov qauv loj dua 40um. Disadvantages: Qhov tshwm sim yog cuam tshuam los ntawm tib neeg yam thiab kev tshuaj ntsuam deformation.
(2) Microscopic method (duab). Qhov zoo: Yooj yim, intuitive, morphological tsom xam, haum rau nqaim faib (qhov sib piv ntawm qhov siab tshaj plaws rau qhov me me ntawm qhov tsawg dua 10: 1) ntawm cov qauv. Qhov tsis zoo: kev pom tsis zoo, kev soj ntsuam cov qauv nrog ntau qhov kev faib tawm yog qhov teeb meem ntau dua, thiab cov qauv nrog qhov loj dua 1 um tsis tuaj yeem txheeb xyuas.
(3) Kev daws teeb meem (nrog rau lub ntiajteb txawj nqus zaum thiab Lixin settling). Qhov zoo: kev ua haujlwm tsis tu ncua, kev ua haujlwm tsis tu ncua ntawm qhov ntsuas, tus nqi qis, qhov raug zoo thiab rov ua dua, ntau yam kev sim. Disadvantages: Lub sij hawm xeem yog ntev dua thiab kev ua haujlwm nyuaj dua.
(4) Txoj kev tiv thaiv. Qhov zoo: Tus naj npawb ntawm cov khoom tuaj yeem ntsuas tau ib qib zuj zus, lub tswv yim sib npaug yog qhov tseeb, qhov nrawm nrawm, thiab qhov tseeb yog qhov zoo. Qhov tsis zoo: Nws tsis haum rau kev ntsuas particle hauv qab no 0.1 um, thiab nws yog ib qho teeb meem los hloov cov raj nrog qhov me me rau cov qauv uas muaj qhov loj me me.
(5) Laser txoj kev. Qhov zoo: kev ua haujlwm yooj yim, ntsuas nrawm nrawm, ntsuas qhov ntsuas loj, rov ua tau zoo thiab raug, ntsuas hauv online thiab ntsuas qhuav. Disadvantages: Cov txiaj ntsig tau cuam tshuam los ntawm cov qauv kev faib tawm, cov nqi ntsuas yog siab thiab qhov kev daws teeb meem tsawg.
(6) Electron microscopy. Qhov zoo: tsim nyog rau kev sim cov khoom tshiab ultra-tshiab lossis txawm tias nanoparticles, kev daws teeb meem siab, morphology thiab qauv kev soj ntsuam tuaj yeem ua tau, Qhov tsis zoo: cov qauv me me, cov duab tsis zoo, kev ntsuas tau raug cuam tshuam rau tib neeg yam, thiab cov cuab yeej yog kim.
(7) Txoj kev Photoresistance. Qhov zoo: kev sim yooj yim thiab ceev, tuaj yeem ntsuas cov khoom hauv cov kua lossis roj, kev daws teeb meem siab. Disadvantages: tsis haum rau cov qauv nrog particle loj tsawg dua 1umde, lub system yog tshwj xeeb, tsuas yog haum rau ntsuas plua plav, pa phem los yog cov tshuaj uas tau diluted, thiab tsis ntau rau cov hmoov.
(8) Txoj kev ua pa. Qhov zoo: Cov khoom siv qis qis. Cov khoom siv hmoov tuaj yeem ntsuas tsis tau dispersing tus qauv. Qhov tsis zoo: tsuas yog qhov nruab nrab particle loj tuaj yeem tau txais, thiab qhov loj me me tsis tuaj yeem ntsuas tau; Tsis txhob ntsuas tsawg dua 5um hmoov zoo.
(9) X-ray me me scattering txoj kev. Siv los ntsuas particle loj ntawm nanoscale hais.
(10) Photon correlation spectroscopy (dynamic light scattering method). Siv rau kev ntsuas particle loj ntawm nanoscale hais.
Dawb corundum abrasives yog ua los ntawm bauxite thiab graphite electrodes, thiab yog tsim los ntawm ib tug tshiab ultrafine hmoov technology. Hauv cov txheej txheem tsim khoom, cov khoom siv raw yuav tsum tau ntxiv, nplawm, zoo li tus thiab raug rho tawm haujlwm ntawm qhov kub thiab txias. Kev siv cov yam ntxwv ntawm dawb corundum: siab refractoriness, ruaj khov kev ua haujlwm ntawm qhov kub thiab txias, tsis muaj tawg. Nws tsis pulverise. Corrosion kuj, siab hardness, tab sis kuj muaj ib tug tej yam toughness. Dawb corundum yog tsim rau txhua yam ntawm cov ntaub ntawv refractory nyob rau hauv kub kub ntau lawm. Nws yog siv dav hauv kev sib tsoo ntawm cov tshuaj, iav thiab ntau yam ntaub ntawv hlau, thiab tuaj yeem siv rau hauv kev pom cov dej zoo.
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