Hauv kev lag luam, muaj ib yam khoom hu uadawb aluminium oxide, uas plays lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam nrog nws lub cev thiab tshuaj lom neeg tshwj xeeb. Yog li, dab tsi yog dawb corundum? Dab tsi yog nws cov khoom tseem ceeb thiab daim ntawv thov teb? Cov txiaj ntsig tseem ceeb yog dab tsi? Hauv qab no, cia peb taug kev mus rau hauv lub ntiaj teb ntawm dawb corundum thiab tshawb txog nws qhov tsis paub.
Dab tsi yog qhov muaj pes tsawg leeg ntawm dawb aluminium oxide?
Dawb corundum, raws li lub npe qhia, yog cov khoom siv dawb. Nws cov khoom tseem ceeb yog aluminium oxide (Al₂O₃), uas yog cov khoom siv tawv tawv ceramic. Ntxiv rau alumina, dawb corundum kuj tseem muaj me me ntawm cov hlau, titanium, silicon thiab lwm yam impurities, muaj cov impurities yuav cuam tshuam rau nws cov xim thiab kev ua haujlwm. Los ntawm kev tswj cov ntsiab lus thiab hom impurities, dawb corundum ntawm cov qib sib txawv thiab siv tau tuaj yeem tsim.
Dab tsi yog daim ntawv thov tseem ceeb ntawm aluminium oxide?
Dawb corundum yog dav siv nyob rau hauv ntau lub teb vim nws siab hardness, siab hnav tsis kam thiab siab tshuaj stability.
1. Abrasives kev lag luam: Dawb corundum yog cov khoom siv tseem ceeb rau kev tsim cov log tsheb abrasive, ntawv xuab zeb, txiav daim thiab lwm yam abrasives, siv rau kev sib tsoo, polishing thiab txiav cov hlau thiab cov khoom tsis yog hlau.
2. Refractory kev lag luam: Vim tias dawb corundum muaj cov ntsiab lus melting siab thiab hluav taws kub tsis kam, nws yog siv los ua ib qho ntxiv rau cov ntaub ntawv refractory xws li refractory bricks thiab refractory castables.
3. Kev lag luam tshuaj: Dawb corundum yog siv los ua catalyst carrier, muab tub lim thiab sib tsoo nruab nrab hauv kev lag luam tshuaj, uas yuav pab txhim kho kev ua haujlwm ntawm cov tshuaj tiv thaiv thiab cov khoom zoo.
4. Ceramic kev lag luam: Lub siab tawv thiab hnav tsis kam ntawm corundum dawb ua rau nws yog ib qho khoom siv zoo tshaj plaws rau cov khoom siv ceramic xws li cov vuas luaj ceramic thiab cov pob plooj (porcelain), uas tuaj yeem txhim kho lub cev thiab kev pabcuam lub neej ntawm cov khoom siv ceramic.
vim li casdawb aluminium oxidetuaj yeem siv dav hauv ntau qhov chaw?
Nws qhov zoo tsis tuaj yeem tsis quav ntsej:
1. Siab hardness: Lub hardness ntawm dawb corundum yog thib ob tsuas yog pob zeb diamond, uas ua rau nws muaj txiaj ntsig hauv kev sib tsoo thiab polishing txheej txheem kom tshem tawm cov ntaub ntawv.
2. Zoo hnav tsis kam: dawb corundum tsis yooj yim rau hnav thaum lub sij hawm sib tsoo high-speed, yog li tuav lub durability thiab stability ntawm cov cuab yeej sib tsoo.
3. Muaj zog chemical stability: dawb corundum muaj cov kua qaub zoo thiab alkali corrosion kuj thiab tuaj yeem tswj kev ua haujlwm ruaj khov nyob rau hauv ib puag ncig hnyav tshuaj.
4. Zoo thermal stability: dawb corundum tuaj yeem tswj tau lub cev thiab tshuaj lom neeg ruaj khov ntawm qhov kub thiab txias, haum rau qhov chaw ua haujlwm kub.
Los ntawm cov lus qhia saum toj no, peb tuaj yeem pom tias yog ib qho tseem ceeb ntawm cov khoom siv raw, nrog rau nws lub cev thiab tshuaj lom neeg lub cev, corundum dawb plays lub luag haujlwm tseem ceeb hauv ntau qhov chaw. Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis thiab kev txhim kho kev lag luam, daim ntawv thov kev lag luam ntawm corundum dawb yuav txuas ntxiv nthuav dav, thiab nws cov nqi hauv kev lag luam yav tom ntej yuav muaj txiaj ntsig zoo dua. Yog li ntawd, kev tshawb fawb tob thiab kev txhim kho ntawm daim ntawv thov thev naus laus zis ntawm corundum dawb yog qhov tseem ceeb los txhawb kev lag luam kev vam meej thiab txhim kho kev tsim khoom.
Yog tias koj xav tau dawb aluminium oxide, thov mus saib hauv lub vev xaib hauv qab no:
https://www.xfabrasive.com/abrasive-material/white-aluminium-oxide.html
