Ntau yam ntawm Abrasives

Ntau yam ntawm abrasivesCov ntau yam ntawm abrasives yuav muab faib ua ob pawg: natural abrasives thiab artificial abrasives. Ua ntej, ntau yam ntawm ntuj abrasivesTag nrho cov khoom ntuj uas siv tau rau kev sib tsoo los yog sib tsoo yog sib sau ua ke hu ua natural abrasives. Feem ntau siv natural abrasives yog cov hauv qab no: 1. Pob zeb diamond (1) rau kev hnav khaub ncaws sib tsoo; (2) sib tsoo thiab sib tsoo cov ntaub ntawv nyuaj (xws li cemented carbide, lub pov haum iav, pob zeb, thiab lwm yam).2. Ntuj corundum (1) qib siab corundum (feem ntau hu ua gemstone) sapphire (muaj titanium), ruby ​​(muaj chromium), thiab lwm yam siv rau cov hniav nyiaj hniav kub, ob hom tuaj yeem siv ua abrasive, siv los ua kev sib tsoo log, whetstone, sandpaper, emery daim ntaub los yog micro-hmoov, sib tsoo paste, thiab lwm yam.

Thib ob, ntau yam khoom siv abrasives1, corundum series dag abrasivesCorundum series ntawm cov khoom cuav abrasives yog xim av corundum, dawb corundum, zirconium corundum, microcrystalline corundum, ib leeg siv lead ua corundum, chrome corundum, praseodymium corundum, dub corundum thiab soob. 1) Brown corundum (A) Brown corundum yog tsim los ntawm bauxite, anthracite thiab hlau filings, uas yog smelted ntawm kub kub nyob rau hauv hluav taws xob arc rauv. Nyob rau hauv cov txheej txheem smelting, cov pa roj carbon nyob rau hauv anthracite bauxite silicon oxide (SiO2), hlau oxide thiab titanium oxide thiab lwm yam impurities txo mus rau hlau, cov hlau ua ke los ua ferroalloy, vim nws qhov ntom yog loj dua corundum molten kua thiab nyob rau hauv lub smelting txheej txheem. Hauv qab ntawm lub cub tawg thiab corundum molten kua sib cais.Brown corundum crushing kuj muaj zog, anti-oxidation, anti-corrosion, muaj tshuaj zoo stability, yog ib hom ntawm lug siv abrasive. Nws yog tsim rau kev sib tsoo cov ntaub ntawv hlau nrog lub zog tensile siab, xws li cov pa roj carbon zoo tib yam, tawv bronze, hlau alloy, malleable cam khwb cia hlau, thiab lwm yam. (2) Dawb fused alumina (WA) Dawb corundum (a-Al2o3) yog ib qho abrasive ua los ntawm txhuas oxide hmoov rhuab thiab melted nyob rau hauv ib tug arc rauv. Cov impurities nyob rau hauv raw cov ntaub ntawv tsis raug tshem tawm nyob rau hauv lub smelting txheej txheem, yog li ntawd, qhov zoo ntawm dawb corundum yog ze ze rau lub purity ntawm raw cov ntaub ntawv.Cov ntsiab lus ntawm A1203 nyob rau hauv dawb corundum yuav tsum ntau tshaj 97%, thiab nws hardness yog siab tshaj qhov ntawd. xim av corundum, tab sis nws yog nkig. Nws muaj kev txiav zoo, oxidation tsis kam thiab roj corrosion, thiab muaj cov rwb thaiv tsev zoo. Feem ntau siv rau cov hlau tawv tawv, hlau alloy hlau zoo sib tsoo thiab zoo sib tsoo, sib tsoo xov thiab iav, dawb corundum kuj tseem siv tau rau precision casting thiab refractory cov ntaub ntawv. Lawv yeej zoo ib yam li cov xim av corundum. Tam sim ntawd tom qab tso tseg lub cub tawg, cov kua molten yog nchuav rau hauv pwm kom txias sai (feem ntau nyob rau hauv 30 feeb), thiaj li kom tau txais cov aggregate ntawm zoo crystals.Microcrystalline corundum nyob rau hauv cov txheej txheem smelting, cov degree ntawm txo impurities yog pluag, Cov ntsiab lus ntawm Al203 yog 94% ~ 96%, cov siv lead ua loj yog feem ntau 80 ~ 300 / tm, cov khoom siv lead ua rau 57% ~ 85%, cov siv lead ua loj tshaj plaws tsis tshaj 400 ~ 600um. Nws muaj cov yam ntxwv ntawm siab zog thiab toughness. Haum rau kev sib tsoo hnyav, tuaj yeem sib tsoo stainless hlau, carbon steel, bearing steel thiab tshwj xeeb ductile hlau thiab lwm yam ntaub ntawv, vim hais tias cov abrasive hais nyob rau hauv cov txheej txheem sib tsoo yog micro-ntug tawg lub xeev, kuj yog siv rau precision sib tsoo thiab txawm iav sib tsoo. (4) Ib leeg siv lead ua corundum (SA) Ib leeg siv lead ua corundum yog bauxite, anthracite, hlau filings thiab pyrite (FeS) raws li raw cov ntaub ntawv, nyob rau hauv lub arc rauv eutectic, bauxite nyob rau hauv hlau oxide, silicon dioxide thiab titanium oxide tau raug txo thiab tsim ntawm hlau alloy los ntawm cov kua molten nyob rau hauv qab ntawm lub cub tawg. Ib feem me me ntawm alumina thiab carbon, ferrous sulfide decomposition cov tshuaj tiv thaiv, ib qho me me ntawm txhuas sulfide (AI2S3) tau ntim rau hauv nruab nrab ntawm cov khoom siv lead ua, thaum lub frit txias rau hauv dej, aluminium sulfide yog yaj, thiab txhuas sulfide sib cais los ntawm Ib qho siv lead ua corundum tuaj yeem tawg mus rau hauv qhov loj me me ntawm cov abrasive.Monocrystalline corundum yog grey, nws cov duab particle feem ntau sib npaug rau cov duab, cov siv lead ua tsis muaj impurities, nrog ntau lub kaum sab xis txiav, nyob rau hauv tib lub zog sib tsoo. , cov tsim torque yog tsawg dua li lwm yam abrades, yog li nws tsis yooj yim rau tawg, siab mechanical zog, ib qho particle compressive zog yog 22 ~ 38 kg, thiab xim av corundum tsuas yog 10 ~ 20kg. Ib leeg siv lead ua corundum vim siab hardness thiab toughness, yog li lub peev xwm txiav muaj zog, tuaj yeem siv los ua cov cuab yeej steel, alloy steel, stainless hlau, siab vanadium hlau thiab lwm yam.(5) Dub fused alumina (BA) Txoj kev smelting ntawm corundum dub yog tib yam li cov xim av corundum, uas yog ua los ntawm bauxite li raw khoom, nrog ib tug me me ntawm txo tus neeg sawv cev, thiab yog melted, thiab nws lub hwj chim noj yog li ntawm ob feem peb ntawm cov xim av corundum. Yog xim dub, cov ntsiab lus tshuaj tseem ceeb: A1203 tsis tsawg dua 77%, SiO2 cov ntsiab lus yog 10% ~ 12%, Fe203 cov ntsiab lus yog 7% ~ 10%, TiO2 txog 3%, qhov ceev tsis tsawg dua 3.61 g / cm3.Black corundum muaj qhov zoo ntawm tus kheej, tsis tshua muaj cua sov thaum sib tsoo, qhov roughness ntawm lub workpiece zoo dua, haum rau hauv qab polishing ntawm qhov chaw ua ntej electroplating, polishing ntawm txhuas cov khoom thiab stainless hlau, kuj tseem siv tau rau polishing optical iav, ua. ntoo thiab lwm yam. Vim nws qhov zoo hydrophilicity, nws tuaj yeem siv rau hauv kev tsim cov ntawv xuab zeb, emery daim ntaub thiab cov cuab yeej siv tshuaj abrasive, thiab tseem tuaj yeem siv los ua kev sib tsoo thiab polishing hmoov. Vim nws cov ntsiab lus hlau siab, corundum dub tsis haum rau kev tsim cov ceramic abrades.

2, carbide series dag abrasive silicon carbide (C, GC) Silicon carbide yog quartz, roj av coke ua cov khoom tseem ceeb, ntoo hmoov, ntsev raws li cov khoom pab raws li ib qho kev faib ua feem ntawm kev sib xyaw rau hauv lub qhov cub tiv thaiv, los ntawm kev kub kub smelting thiab ua. ntawm cov khoom siv abrasive ntau yam.Silicon carbide muab faib ua xim dub thiab ntsuab ob hom: dub silicon carbide yog dub lossis xiav-dub, ntsuab silicon carbide yog ntsuab lossis xiav-ntsuab. Nyob rau hauv cov txheej txheem tsim, zus tau tej cov ntsuab silicon carbide yog yus muaj los ntawm kev siv cov ntshiab raw cov ntaub ntawv, lub nra rau ntxiv ntsev, nws yuav txhawb cov khoom yog ntsuab. Lub purity ntawm ntsuab silicon carbide yog siab dua dub silicon carbide.Silicon carbide tsis hnov ​​​​mob nrog cov kua qaub, tab sis cov yaj ntawm lub hauv paus oxide tuaj yeem txhawb cov decomposition ntawm silicon carbide.Piv nrog corundum dag abrasives, dub silicon carbide muaj zog dua thiab ntau dua brittleness. Nws yog qhov tsim nyog rau kev ua cov hlau thiab cov ntaub ntawv tsis yog xim hlau nrog lub zog tensile qis, xws li grey cam khwb cia hlau, tooj dag, txhuas thiab lwm yam hlau tsis muaj hlau, nrog rau cov ntaub ntawv tawv tawv xws li ceramics thiab iav pob zebGreen silicon carbide piv nrog cov silicon dub. carbide, nws purity, hardness, brittleness yog me ntsis siab dua, haum rau kev ua cov ntaub ntawv nyuaj thiab nkig, xws li carbide, iav, agate, thiab lwm yam, kuj yog siv dav hauv kev ntsuas cov cuab yeej, cov cuab yeej txiav, pwm sib tsoo thiab aircraft, tsheb, nkoj. thiab lwm yam cav lub tog raj kheej honing.