Zizindikiro zaukadaulo za ufa wa diamondi wabwino kwambiri zimaphatikizapo kufalikira kwa tinthu tating'onoting'ono, mawonekedwe a tinthu tating'onoting'ono, kuyera, mawonekedwe enieni ndi miyeso ina, zomwe zimakhudza mwachindunji momwe imagwiritsidwira ntchito m'mafakitale osiyanasiyana (monga kupukuta, kupera, kudula, ndi zina zotero). Izi ndi zizindikiro zazikulu zaukadaulo ndi zofunikira zomwe zasankhidwa kuchokera ku zotsatira zonse zosaka:
Kugawa kukula kwa tinthu ndi magawo a zizindikiro
1. Kukula kwa tinthu tating'onoting'ono
Kukula kwa tinthu tating'onoting'ono ta ufa wa diamondi nthawi zambiri kumakhala ma microns 0.1-50, ndipo zofunikira pa kukula kwa tinthu zimasiyana kwambiri malinga ndi momwe zimagwiritsidwira ntchito.
Kupukuta: Sankhani 0-0.5 micron mpaka 6-12 micron ya ufa wochepa kuti muchepetse kukanda ndikukongoletsa mawonekedwe ake.
Kupera: Ufa waung'ono kuyambira ma microns 5-10 mpaka ma microns 12-22 ndi woyenera kwambiri pakugwira ntchito bwino komanso pamwamba pake.
Kupera bwino: ufa wa 20-30 micron ukhoza kupititsa patsogolo ntchito yopera
2. Kufotokozera kukula kwa tinthu tating'onoting'ono
D10: kukula kwa tinthu tofanana ndi 10% ya kugawa kokwanira, kusonyeza kuchuluka kwa tinthu tating'onoting'ono. Kuchuluka kwa tinthu tating'onoting'ono kuyenera kulamulidwa kuti tipewe kuchepetsa mphamvu yopera.
D50 (m'mimba mwake wapakati): imayimira kukula kwa tinthu tating'onoting'ono, komwe ndi gawo lalikulu la kufalikira kwa tinthu tating'onoting'ono ndipo kumakhudza mwachindunji magwiridwe antchito ndi kulondola kwa ntchito yokonza.
D95: kukula kofanana kwa tinthu tating'onoting'ono ta 95%, ndikuwongolera kuchuluka kwa tinthu tating'onoting'ono tating'onoting'ono (monga D95 yoposa muyezo ndi yosavuta kuyambitsa mikwingwirima pazida zogwirira ntchito).
Mv (voliyumu yapakati pa tinthu tating'onoting'ono): imakhudzidwa kwambiri ndi tinthu tating'onoting'ono tating'onoting'ono ndipo imagwiritsidwa ntchito poyesa kufalikira kwa malekezero a coarse
3. Dongosolo lokhazikika
Miyezo yapadziko lonse yomwe imagwiritsidwa ntchito kwambiri ndi monga ANSI (monga D50, D100) ndi ISO (monga ISO6106:2016).
Chachiwiri, mawonekedwe a tinthu ndi mawonekedwe a pamwamba
1. Magawo a mawonekedwe
Kuzungulira: kuzungulira kuli pafupi ndi 1, tinthu tating'onoting'ono timakhala tozungulira kwambiri ndipo kupukuta kumakhala bwino; tinthu tating'onoting'ono tozungulira pang'ono (makona ambiri) ndi toyenera kwambiri pa macheka a waya opangidwa ndi electroplating ndi malo ena omwe amafunika m'mbali zakuthwa.
Tinthu tofanana ndi mbale: tinthu tomwe timadutsa> 90% timaonedwa ngati mbale, ndipo chiwerengerocho chiyenera kukhala chochepera 10%; tinthu tofanana ndi mbale zambiri tingayambitse kusokonekera kwa kuzindikira kukula kwa tinthu ndi zotsatira zosakhazikika za kugwiritsa ntchito.
Tinthu tofanana ndi mikanda: chiŵerengero cha tinthu tating'onoting'ono m'litali ndi m'lifupi> 3:1 chiyenera kulamulidwa mosamala, ndipo chiwerengerocho sichiyenera kupitirira 3%.
2. Njira yodziwira mawonekedwe
Maikulosikopu yowoneka bwino: yoyenera kuyang'ana mawonekedwe a tinthu tating'onoting'ono toposa ma microns awiri
Kusanthula ma electron microscope (SEM): imagwiritsidwa ntchito pofufuza mawonekedwe a tinthu tating'onoting'ono ta ultrafine pamlingo wa nanometer.
Kulamulira ukhondo ndi kusayera
1. Zinthu zodetsedwa
Kuyera kwa diamondi kuyenera kukhala> 99%, ndipo kuipitsidwa kwachitsulo (monga chitsulo, mkuwa) ndi zinthu zovulaza (sulfure, chlorine) ziyenera kulamulidwa mosamalitsa pansi pa 1%.
Zonyansa zamaginito ziyenera kukhala zochepa kuti tipewe zotsatira za agglomeration pa kupukuta kolondola.
2. Kuthekera kwa maginito
Daimondi yoyera kwambiri iyenera kukhala pafupi ndi yopanda maginito, ndipo kuthekera kwakukulu kwa maginito kumasonyeza kuti pali zinyalala zotsalira zachitsulo, zomwe ziyenera kuzindikirika pogwiritsa ntchito njira yopangira maginito.
Zizindikiro za magwiridwe antchito
1. Kulimba kwa mphamvu
Kukana kuphwanya kwa tinthu tating'onoting'ono kumadziwika ndi liwiro losasweka (kapena nthawi zosweka pang'ono) pambuyo pa mayeso a kugwedezeka, zomwe zimakhudza mwachindunji kulimba kwa zida zopukusira.
2. Kukhazikika kwa kutentha
Ufa wosalala uyenera kukhala wokhazikika pa kutentha kwakukulu (monga 750-1000℃) kuti upewe kupangika kwa graphite kapena okosijeni zomwe zimapangitsa kuti mphamvu ichepe; kuzindikira kwa thermogravimetric analysis (TGA) komwe kumagwiritsidwa ntchito kwambiri.
3. Kuuma pang'ono
Kulimba kwa ufa wa diamondi kuli mpaka 10000 kq/mm2, kotero ndikofunikira kuonetsetsa kuti tinthu tating'onoting'ono tambiri tili ndi mphamvu zambiri kuti tisunge bwino kudula.
Zofunikira pakusinthasintha kwa ntchito 238
1. Kulinganiza pakati pa kugawa kukula kwa tinthu ndi momwe timagwirira ntchito
Tinthu tating'onoting'ono (monga D95 yokwera) timathandiza kuti kugaya kugwire bwino ntchito koma timachepetsa kutha kwa pamwamba: tinthu tating'onoting'ono (D10 yaying'ono) timakhala ndi zotsatira zosiyana. Sinthani kuchuluka kwa kugawa malinga ndi zofunikira.
2. Kusintha mawonekedwe
Tinthu tating'onoting'ono tokhala ndi mbali zambiri ndi toyenera kupukutira mawilo a utomoni; tinthu tating'onoting'ono tozungulira ndi toyenera kupukutira bwino.
Njira zoyesera ndi miyezo
1. Kuzindikira kukula kwa tinthu
Laser diffraction: imagwiritsidwa ntchito kwambiri pa tinthu ta micron/submicron, ntchito yosavuta komanso deta yodalirika;
Njira yosefera: imagwira ntchito pa tinthu toposa ma microns 40 okha;
2. Kuzindikira mawonekedwe
Chowunikira zithunzi za tinthu tating'onoting'ono chingathe kuyeza magawo monga sphericity ndikuchepetsa cholakwika cha kuwona ndi manja;
chidule
Ufa wa diamondi wabwino kwambiri umafuna kuwongolera kwathunthu kukula kwa tinthu tating'onoting'ono (D10/D50/D95), mawonekedwe a tinthu tating'onoting'ono (kuzungulira, kung'ambika kapena kuchuluka kwa singano), kuyera (zosayera, mphamvu zamaginito), ndi makhalidwe enieni (mphamvu, kukhazikika kwa kutentha). Opanga ayenera kukonza magawo kutengera zochitika zinazake zogwiritsidwa ntchito ndikuwonetsetsa kuti zinthuzo ndi zabwino nthawi zonse kudzera munjira monga laser diffraction ndi electron microscopy. Posankha, ogwiritsa ntchito ayenera kuganizira zofunikira zina zogwiritsira ntchito (monga kuchita bwino ndi kumaliza) ndikufanizira zizindikiro moyenera. Mwachitsanzo, kupukuta kolondola kuyenera kukhala patsogolo kuwongolera D95 ndi kuzungulira, pomwe kupukuta kosalala kumatha kumasula zofunikira za mawonekedwe kuti ziwongolere magwiridwe antchito.
Zomwe zili pamwambapa zatengedwa kuchokera ku netiweki ya zinthu zolimba kwambiri.
Nthawi yotumizira: Juni-11-2025
