Corundum Txheej txheem cej luam:
Corundum, lub npe originated nyob rau hauv Is Nrias teb, yog ib tug mineralogical lub npe. Muaj peb lub ntsiab sib txawv ntawm corundum Al2O3, uas yog -Al2O3, -Al2O3 thiab -Al2O3. Hauv gemology, cov xwm txheej ntawm gemstones hu ua Ruby (Ruby) thiab Sapphire (Sapphire). Myanmar, Sri Lanka, Thaib, Nyab Laj thiab Qhab Meem teb yog lub ntiaj teb cov khoom tseem ceeb tshaj plaws ntawm cov khoom zoo siab ruby thiab sapphire. Lwm lub tebchaws tsim khoom yog Tuam Tshoj, Australia, Tebchaws Meskas, Tanzania thiab lwm yam. Corundum yog thib ob tsuas yog pob zeb diamond hauv hardness.
Kev siv tseem ceeb ntawm corundum:
Vim tias nws cov khoom kub kub zoo heev thiab lub zog txhua yam, corundum tau siv dav hauv ntau yam kev lag luam xws li metallurgy, tshuab, tshuaj lom neeg kev lag luam, hluav taws xob, aviation thiab kev tiv thaiv hauv tebchaws. Nws cov kev siv tseem ceeb tau piav qhia hauv qab no.
1, vim qhov kub tsis kam, corrosion kuj, siab zog thiab lwm yam khoom, nws yog siv los ua lub rooj vag zawv zawg rau cov hlau, smelting tsawg hlau, tshwj xeeb alloy, siab purity hlau, iav hlau kos duab, ua laser iav crucible thiab cov hlab ntsha; Ntau yam kub kub rauv, xws li cov ntaub ntawv refractory, ceramics, hauv ob sab phlu (phab ntsa thiab kav dej) ntawm ironmaking blast furnaces; Cov khoom siv lub cev thiab tshuaj lom neeg, cov khoom siv hluav taws xob, hluav taws xob tiv thaiv thiab oxidation resistant txheej. Tsawg silicon sintered corundum cib nrog SiO2 tsawg dua 0.5% yog cov txheej txheem tshwj xeeb ntawm carbon dub, boron chemical kev lag luam, chiv, hluavtaws ammonia reactor thiab vaporization rauv.
2, vim muaj cov yam ntxwv ntawm kev ua haujlwm siab, zoo hnav tsis kam, siab zog, nyob rau hauv cov tshuaj lom neeg, siv ntau hom tshuaj tiv thaiv cov hlab ntsha thiab cov kav dej, cov khoom siv tshuaj lom neeg; Rau cov khoom siv tshuab, ntau yam pwm, xws li hlau kos duab tuag, extrusion mem hluav core tuag qhov ncauj, thiab lwm yam.; Rau cov cuab yeej txiav, abrasives, cov ntaub ntawv mos txwv, tib neeg cov pob qij txha, sealing sib tsoo rings, thiab lwm yam.
3, vim qhov kub thiab txias rwb thaiv tsev, nws yog siv los ua thermocouple hlau raj thiab cov raj tiv thaiv, atomic reactor nrog zoo rwb thaiv tsev, ua ke nrog me ntsis poob, dielectric tas li tsis loj, nyob rau hauv kev lag luam electronics yog dav siv nyob rau hauv cov khoom sib xyaw hluav taws xob rauv puag. raj puag, plhaub, porcelain ncej, nyias qhov rais, missile radar kav hlau txais xov tiv thaiv npog.
4, Al2O3 yog ib qho ionic siv lead ua, cov qauv ruaj khov heev. Siv nyob rau hauv high zaus, siab siab thiab kub kub, nws rwb thaiv tsev yog tseem zoo, ua ke nrog me ntsis poob, dielectric tas li tsis loj, nyob rau hauv lub electronics kev lag luam yog dav siv nyob rau hauv cov khoom extrusion subgrade phaj raj puag, plhaub, porcelain thav duab, micro iav. qhov rais, missile radar kav hlau txais xov tiv thaiv npog thiab lwm yam.
5, corundum cov khoom muaj cua nruj zoo, txawm tias kub kub kuj tseem nruj thiab airtight, yog li nws yog dav siv hauv lub tshuab nqus tsev, xws li kev siv corundum los ua ntau yam ntawm lub tshuab nqus tsev loj, cov khoom microcircuits hauv ob sab hauv. -line pob plhaub.
6, corundum rwb thaiv tsev cov ntaub ntawv, xws li corundum lub teeb ci ci, corundum hollow npas thiab fiber ntau cov khoom, yog dav siv nrog ntau yam kub kub rauv phab ntsa thiab lub cub tawg, ob qho tib si kub thiab kub preservation.
7, pob tshab corundum khoom tuaj yeem ua los ntawm lub teeb, microwave fairing. Tsis tas li ntawd, Na-b-Al2O3 cov khoom yog cov khoom siv electrolyte rau kev tsim cov roj teeb sodium-sulfur.
Lub hom phiaj tshwj xeeb
Raws li ib yam ntawm abrasive, corundum yog dav siv nyob rau hauv abrasive abrasives, uas muaj ntau hom corundum, kev siv ntau hom corundum tsis zoo ib yam, kab lus no yuav qhia koj txog hom yam ntxwv thiab kev siv ntawm corundum.
1. Xim av corundum
Cov tsos ntawm xim av corundum yog xim av, thiab cov ntsiab lus yog 94.5% - 97%. Nws muaj cov yam ntxwv ntawm siab hardness, siab toughness, ntse particle thiab tus nqi qis, haum rau kev sib tsoo hlau nrog lub zog tensile siab, thaum tsis muaj lwm yam abrasives, feem ntau tuaj yeem hloov los ntawm nws.
Nws yog dav siv rau kev sib tsoo ntawm cov hlau zoo tib yam, xws li: carbon steel, dav hlau alloy, calcined cam khwb cia hlau, tawv bronze thiab lwm yam. Brown corundum qib thib ob abrasive feem ntau siv los ua kev sib tsoo log, cob txiav log. Xuab zeb pobzeb, emery ntaub, sandpaper, thiab lwm yam.
2. Dawb corundum (dawb alumina oxide)
Lub hardness ntawm dawb corundum yog me ntsis siab dua li cov xim av corundum, tab sis lub toughness yog me ntsis zuj zus thaum sib tsoo, nws yog ib qho yooj yim mus txiav rau hauv lub workpiece, thiab nws tus kheej-ntse yog zoo dua, lub tshav kub yog me me, muaj peev xwm sib tsoo muaj zog. , qhov ua tau zoo yog siab, thiab tus nqi siab dua li cov xim av corundum.
Haum rau kev sib tsoo high hardness steel, xws li kev kub ceev steel, siab carbon steel, hardened steel, alloy steel thiab lwm yam.
3. Dub corundum
Dub corundum yog ib tug derivative ntawm xim av corundum thiab muaj ib tug dub tsos. Tsawg hardness tab sis zoo toughness.
Nws feem ntau yog siv rau kev sib tsoo dawb, xws li polishing los yog ntxhib sib tsoo ua ntej electroplating, thiab tseem siv los ua cov cuab yeej coated abrasive, resin txiav daim, polishing blocks, thiab lwm yam.
4. Ib leeg siv lead ua corundum
Cov khoom siv ntawm ib qho siv lead ua corundum abrasive yog tsim los ntawm ib qho siv lead ua, thiab muaj qhov zoo ntawm ntau cov ntug txiav, siab hardness thiab toughness, muaj zog sib tsoo muaj peev xwm, sib tsoo kub tsawg, qhov tsis zoo yog tias cov nqi tsim khoom yog siab, muaj pov tseg. gas nyob rau hauv ntau lawm, tsim dej pov tseg, thiab cov zis yog tsawg.
Nws tuaj yeem siv rau kev sib tsoo cov ntaub ntawv nyuaj thiab tawv tawv, xws li stainless hlau, siab vanadium siab ceev steel, kub resistant alloy steel thiab yooj yim deformed thiab yooj yim hlawv workpieces, txiav txim siab tias ib leeg siv lead ua corundum abrasive yog txwv los ntawm kev tsim khoom, feem ntau. tsuas yog pom zoo rau kev sib tsoo ntawm tshav kub resistant alloys thiab nyuaj rau zom cov ntaub ntawv hlau.
5. Microcrystalline corundum
Microcrystalline corundum yog ib qho derivative ntawm xim av corundum, thiab nws cov tsos xim thiab tshuaj muaj pes tsawg leeg zoo ib yam li cov xim av corundum. Nws yog tus cwj pwm los ntawm cov siv lead ua me me (50-280 μm), zoo abrasive toughness, siab zog thiab zoo tus kheej ntse.
Haum rau kev sib tsoo stainless hlau, carbon hlau, pob zeb cam khwb cia hlau, thiab lwm yam. Txoj kev sib tsoo yog tsim rau kev sib tsoo, txiav kev sib tsoo, nplua sib tsoo thiab hnyav sib tsoo.
6. Zirconium corundum
Nws yog tus cwj pwm los ntawm me ntsis qis hardness, tab sis tus nqi toughness yog loj, lub zog yog siab, siv lead ua loj yog feem ntau zoo, thiab hnav kuj zoo.
Txawv teb chaws zirconium corundum abrasive yog tsuas yog siv rau hnyav load sib tsoo, haum rau sib tsoo kub resistant alloy steel, titanium alloy thiab austenitic stainless hlau.
7. Chrome corundum
Chrome corundum yog derivative ntawm dawb corundum, cov tsos yog rosy, hardness zoo ib yam li dawb corundum, lub toughness yog me ntsis siab dua dawb corundum thiab lub zog yog siab, kev sib tsoo kev ua tau zoo, kev sib tsoo precision siab. Abrasives ua los ntawm hom abrasive no muaj qhov zoo zoo khaws cia.
Daim ntawv thov ntau yam zoo ib yam li cov dawb corundum, tshwj xeeb tshaj yog haum rau kev sib tsoo zoo thiab molding ntawm ntau yam cuab yeej, ntsuas cov cuab yeej, ntsuas qhov chaw, feem ntau chrome corundum muaj kev sib tsoo zoo dua li dawb corundum.
8. Sintered corundum
Sintered corundum yog ua los ntawm nplua alumina los yog alumina hmoov sintered, tus yam ntxwv los ntawm zoo toughness, yuav ua tau rau hauv ntau yam tshwj xeeb duab thiab qhov ntau thiab tsawg ntawm abrasive hais.
Feem ntau yog siv rau lub luag haujlwm hnyav ingot sib tsoo lub log, haum rau kev sib tsoo stainless hlau ingot thiab lwm yam.
