The zizindikiro luso apamwamba diamondi yaying'ono ufa kumaphatikizapo kugawa tinthu kukula, tinthu mawonekedwe, chiyero, katundu thupi ndi miyeso ina, amene mwachindunji zimakhudza zotsatira zake ntchito mu zochitika zosiyanasiyana mafakitale (monga kupukuta, akupera, kudula, etc.). Izi ndi zizindikiro zazikulu zaukadaulo ndi zofunikira zomwe zasanjidwa kuchokera pazotsatira zakusaka:
Kugawa kwa magawo ndi magawo a zilembo
1. Mtundu wa kukula kwa tinthu
Kukula kwa tinthu ta diamondi yaying'ono ya ufa nthawi zambiri kumakhala ma microns 0.1-50, ndipo zofunikira pakukula kwa tinthu zimasiyana kwambiri pamagwiritsidwe osiyanasiyana.
Kupukutira: Sankhani 0-0.5 micron mpaka 6-12 micron ya ufa wocheperako kuti muchepetse zokala ndikuwongolera kutha kwa pamwamba 5
Kupera: Ufa wawung'ono kuyambira 5-10 mpaka 12-22 microns ndiwoyenera kwambiri pakuchita bwino komanso mawonekedwe apamwamba.
Kupera bwino: 20-30 micron ufa ukhoza kupititsa patsogolo kugaya bwino
2. Kugawa kagawo kakang'ono
D10: kukula kwa tinthu ting'onoting'ono kwa 10% ya kugawa kokwanira, kuwonetsa kuchuluka kwa tinthu tating'onoting'ono. Gawo la tinthu tating'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono ting'onoting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono ting'ono.
D50 (apakatikati awiri): amaimira pafupifupi tinthu kukula, amene ndi pachimake chizindikiro cha tinthu kukula kugawa ndi mwachindunji zimakhudza processing dzuwa ndi molondola.
D95: lolingana tinthu kukula kwa 95% zikuchulukirachulukira kugawa, ndi kulamulira zili coarse particles (monga D95 kuposa muyezo n'zosavuta chifukwa zikanda pa workpieces).
Mv (voliyumu pafupifupi kukula kwa tinthu): imakhudzidwa kwambiri ndi tinthu tating'onoting'ono tomwe timagwiritsidwa ntchito poyesa kugawa kwakutali
3. Dongosolo lokhazikika
Miyezo yapadziko lonse lapansi yomwe imagwiritsidwa ntchito kwambiri ndi ANSI (mwachitsanzo D50, D100) ndi ISO (monga ISO6106:2016).
Chachiwiri, mawonekedwe a tinthu ndi mawonekedwe apamwamba
1. Mawonekedwe magawo
Kuzungulira: kuyandikira kozungulira kumakhala kwa 1, tinthu tating'onoting'ono tating'onoting'ono timakhala tozungulira komanso kupukuta bwino; particles ndi otsika roundness (ambiri ngodya) ndi oyenera kwambiri electroplating waya macheka ndi zithunzi zina zimene zimafuna m'mbali lakuthwa.
Tinthu tating'onoting'ono tokhala ngati mbale: tinthu tating'onoting'ono todutsa 90% timawoneka ngati mbale, ndipo gawoli liyenera kukhala lochepera 10%; kuchulukirachulukira ngati tinthu tating'onoting'ono kungayambitse kupatuka kwa kuzindikira kukula kwa tinthu komanso kusakhazikika kwa ntchito.
Tinthu tating'onoting'ono tokhala ngati mikanda: kutalika ndi m'lifupi chiŵerengero cha particles> 3: 1 iyenera kuyendetsedwa mosamalitsa, ndipo chiwerengerocho sichiyenera kupitirira 3%.
2. Njira yodziwira mawonekedwe
Ma microscope a kuwala: oyenera kuyang'ana mawonekedwe a tinthu tating'onoting'ono ta 2 microns
Scanning electron maikulosikopu (SEM): yogwiritsidwa ntchito pofufuza ma morphology a ultrafine particles pa nanometer level.
Kuwongolera chiyero ndi kusadetsedwa
1. Zonyansa
Chiyero cha diamondi chiyenera kukhala choposa 99%, ndipo zonyansa zachitsulo (monga chitsulo, mkuwa) ndi zinthu zovulaza (sulfure, klorini) ziyenera kulamulidwa mosamalitsa pansi pa 1%.
Zonyansa zamaginito ziyenera kukhala zotsika kuti zipewe kuphatikizika pakupukuta kolondola.
2. Kutengeka ndi maginito
Daimondi yoyera kwambiri iyenera kukhala pafupi ndi yopanda maginito, ndipo kutengeka kwambiri kwa maginito kumawonetsa zotsalira zachitsulo zotsalira, zomwe zimafunika kuzindikirika ndi njira yolumikizira ma elekitiroma.
Zizindikiro za thupi
1. Kulimba kwamphamvu
Kukaniza kuphwanyidwa kwa tinthu tating'onoting'ono kumadziwika ndi kuchuluka kosasweka (kapena nthawi zosweka) pambuyo pakuyesa kwamphamvu, komwe kumakhudza mwachindunji kulimba kwa zida zogaya.
2. Kukhazikika kwa kutentha
ufa wabwino umayenera kukhala wokhazikika pa kutentha kwakukulu (monga 750-1000 ℃) kupewa mapangidwe a graphite kapena oxidation yomwe imapangitsa kuchepetsa mphamvu; kudziwika kwa thermogravimetric analysis (TGA).
3. Microhardness
The microhardness wa diamondi ufa ndi mpaka 10000 kq/mm2, choncho m'pofunika kuonetsetsa mkulu tinthu mphamvu kusunga kudula bwino.
Zofunikira pakusinthika kwa ntchito 238
1. Kusamala pakati pa kugawa tinthu kukula ndi zotsatira processing
Tinthu tating'onoting'ono (monga D95 yokwera) imathandizira kugaya bwino koma imachepetsa kutha: tinthu tating'onoting'ono (D10 yaying'ono) imakhala ndi zotsatira zosiyana. Sinthani magawo ogawa malinga ndi zofunikira.
2. Kusintha mawonekedwe
Block Mipikisano m'mphepete particles ndi oyenera mawilo utomoni akupera; particles ozungulira ndi oyenera kupukuta mwatsatanetsatane.
Njira zoyesera ndi miyezo
1. Kuzindikira kukula kwa tinthu
Laser diffraction: yogwiritsidwa ntchito kwambiri kwa micron / submicron particles, ntchito yosavuta ndi deta yodalirika;
Njira ya sieve: imagwira ntchito ku tinthu tating'onoting'ono toposa 40 microns;
2. Kuzindikira mawonekedwe
Particle image analyzer imatha kuwerengera magawo monga sphericity ndikuchepetsa zolakwika pakuwonera pamanja;
mwachidule
Ufa wapamwamba wa diamondi umafunikira kuwongolera kokwanira pakukula kwa tinthu (D10 / D50 / D95), mawonekedwe amtundu (kuzungulira, flake kapena singano), chiyero (zonyansa, maginito), ndi zinthu zakuthupi (mphamvu, kukhazikika kwamafuta). Opanga akuyenera kukhathamiritsa magawo potengera momwe amagwiritsidwira ntchito ndikuwonetsetsa kusasinthika kudzera m'njira monga laser diffraction ndi electron microscopy. Posankha, ogwiritsa ntchito akuyenera kuganizira zofunikira pakukonza (monga kuchita bwino ndi kumaliza) ndikufananiza zizindikiro moyenerera. Mwachitsanzo, kupukuta molondola kuyenera kuika patsogolo kulamulira D95 ndi kuzungulira, pamene kugaya movutikira kungathe kupumula zofunikira za mawonekedwe kuti ziwongolere bwino.
Zomwe zili pamwambazi zatengedwa kuchokera ku netiweki ya superhard materials.
Nthawi yotumiza: Jun-11-2025
