Iyo tekinoroji yemhando yepamusoro yedhaimondi micro poda inosanganisira kugovera saizi, chidimbu chimiro, kuchena, zvimiro zvemuviri uye mamwe mativi, ayo anokanganisa zvakananga mashandisiro ayo ekushandisa mumamiriro akasiyana emaindasitiri (sekupukuta, kugaya, kucheka, nezvimwewo). Aya anotevera ndiwo akakosha ehunyanzvi zviratidzo uye zvinodiwa zvakarongwa kubva kune yakazara tsvakurudzo mhinduro:
Particle size division uye characterization parameters
1. Particle size range
Saizi yedhaimondi micro poda inowanzoita 0.1-50 microns, uye zvinodiwa pakukura kwechikamu zvinosiyana zvakanyanya mumamiriro akasiyana ekushandisa.
Kupenya: Sarudza 0-0.5 micron kusvika 6-12 micron yehupfu hudiki kuderedza mavanga uye kunatsiridza kupera kwepamusoro 5.
Kukuya: Micro-upfu kubva pa5-10 microns kusvika 12-22 microns inonyanya kukodzera kune zvese zviri zviviri kunyatsoshanda uye pamusoro pemhando.
Kukuya zvakanaka: 20-30 micron poda inogona kuvandudza kugona kwekukuya
2. Particle saizi yekugovera maitiro
D10: inoenderana saizi yegumi muzana yekuwedzeredza kugovera, ichiratidza chikamu chezvakanaka zvimedu. Chiyero chezvimedu zvakanaka chinofanira kudzorwa kudzivirira kuderedzwa kwekuita kwekugaya.
D50 (yepakati dhayamita): inomiririra avhareji saizi, inova ndiyo yepakati parameter yekugovera saizi yekugovera uye inokanganisa zvakananga kugadzirisa uye iko kurongeka.
D95: iyo inoenderana particle saizi ye95% yakawedzera kugovera, uye kudzora zviri mukati mezvakakora zvimedu (senge D95 inodarika mwero zviri nyore kukonzeresa zvikwambo pazvishandiso).
Mv (vhoriyamu avhareji saizi): yakanyanya kukanganiswa nezvimedu zvihombe uye inoshandiswa kuongorora kuomarara kwekupedzisira kugoverwa.
3. Standard system
Mitemo yepasi rose inowanzoshandiswa inosanganisira ANSI (semuenzaniso D50, D100) uye ISO (semuenzaniso ISO6106:2016).
Chechipiri, chimiro chechidimbu uye maitiro epamusoro
1. Shape parameters
Roundness: iyo iri pedyo nekutenderera ndeye 1, iyo yakawanda spherical zvidimbu uye zviri nani kupenya kwekuita; zvimedu zvine kutenderera kwakaderera (makona mazhinji) zvakanyanya kufanirwa kune electroplating waya masaha uye zvimwe zviitiko zvinoda micheto inopinza.
Plate-senge zvidimbu: zvimedu zvine transmittance> 90% zvinoonekwa seplate-senge, uye chikamu chinofanira kunge chiri pasi pegumi muzana; yakawandisa ndiro-senge zvimedu zvinozotungamira mukutsauka kwekuona saizi yechinhu uye kusagadzikana kwekushandisa.
Bead-like particles: kureba kusvika kuhupamhi chiyero chezvikamu> 3: 1 inofanira kunyatsodzorwa, uye chikamu hachifaniri kudarika 3%.
2. Nzira yekuona chimiro
Optical microscope: yakakodzera kutarisa kwechimiro chezvikamu zviri pamusoro pe 2 microns
Scanning electron maikorosikopu (SEM): inoshandiswa pakuongorora morphology ye Ultrafine zvimedu padanho re nanometer.
Kuchena nekusachena kutonga
1. Kusachena kwemukati
Kuchena kwedhaimondi kunofanirwa kunge kuri> 99%, uye tsvina yesimbi (yakaita sedare, mhangura) uye zvinhu zvinokuvadza (sarufa, chlorine) inofanira kunyatsodzorwa pasi pe1%.
Magnetic tsvina inofanira kunge yakaderera kudzivirira mhedzisiro yeagglomeration pane chaiyo polishing.
2. Magnetic susceptibility
Kuchena kwedhaimondi kunofanirwa kunge kuri padyo neasiri-magineti, uye yakakwirira magineti susceptibility inoratidza yasara tsvina yesimbi, iyo inoda kuonekwa nemagetsi induction nzira.
Zviratidzo zvekushanda kwemuviri
1. Impact kuoma
Kupwanya kuramba kwezvimedu kunoratidzwa nechiyero chisina kuvhurika (kana semi-yakatsemuka nguva) mushure mekukanganisa bvunzo, iyo inokanganisa zvakananga kusimba kwezviyo zvekuya.
2. Kugadzikana kwekushisa
Poda yakatsetseka inoda kuchengetedza kugadzikana pakupisa kwepamusoro (se750-1000 ℃) kudzivirira kuumbwa kwegraphite kana oxidation zvichikonzera kuderera kwesimba; inowanzoshandiswa thermogravimetric analysis (TGA) kuonekwa.
3. Microhardness
Iyo microhardness yedhaimani poda inosvika 10000 kq/mm2, saka zvinodikanwa kuve nechokwadi chepamusoro chesimba rekuchengetedza kuchengetedza kushanda zvakanaka.
Chishandiso chinochinjika zvinodiwa 238
1. Kuenzana pakati pe particle size distribution and processing effect
Coarse particles (senge yakakwira D95) inonatsiridza kugaya zvakanaka asi inoderedza kupera kwepamusoro: zvimedu zvakanaka (zvidiki D10) zvine mhedzisiro. Gadzirisa kugoverwa kwehuwandu maererano nezvinodiwa.
2. Shape kugadzirisa
Block-multi-edge particles akakodzera resin grinding mavhiri; spherical particles akakodzera kunyatsokwenenzverwa.
Kuedza nzira uye zviyero
1. Particle saizi yekuona
Laser diffraction: yakashandiswa zvakanyanya kune micron / submicron particles, nyore kushanda uye yakavimbika data;
Sieve nzira: inoshanda chete kune zvidimbu zviri pamusoro pe40 microns;
2. Kuonekwa kwechimiro
Particle image analyzer inogona kuyera ma parameter akadai se sphericity uye kuderedza chikanganiso chekutarisa kwemanyorero;
sum up
Yakakwirira-mhando yedhaimani micro-upfu inoda kudzora kwakadzama pamusoro pekugovera saizi (D10 / D50 / D95), chimiro chechidimbu (kutenderera, flake kana tsono yemukati), kuchena (kusvibiswa, magineti zvimiro), uye hunhu hwemuviri (simba, kugadzikana kwekupisa). Vagadziri vanofanirwa kukwidziridza maparamendi zvichibva pane chaiwo mamiriro ekushandisa uye kuve nechokwadi chakaenderana mhando kuburikidza nenzira dzakadai seye laser diffraction uye electron microscopy. Paunenge uchisarudza, vashandisi vanofanirwa kufunga nezve chaiyo yekugadzirisa zvinodiwa (sekugona uye kupedza) uye kuenzanisa zviratidzo zvinoenderana. Semuyenzaniso, kunyatsokwenenzverwa kunofanirwa kukoshesa kudzora D95 uye kutenderera, nepo kugaya kwakashata kuchigona kuzorodza chimiro zvinodiwa kuti uwedzere kushanda zvakanaka.
Izvo zviri pamusoro apa zvakatorwa kubva kune superhard materials network.
Nguva yekutumira: Jun-11-2025
