PCD yekucheka maturusi ane kuomarara kwakanyanya, yakakwira yekumanikidza simba, yakanaka yekupisa conductivity uye kupfeka kuramba, uye inogona kuwana yakakwira machining kurongeka uye kushanda zvakanaka mukumhanya-mhanya machining.
Aya maitiro ari pamusoro anotemerwa nekristaro mamiriro edhaimondi.Mukristaro yedhaimondi, maerekitironi mana evalence emaatomu ekabhoni anoumba mabhondi zvichienderana nechimiro che tetrahedral, uye atomu imwe neimwe kabhoni inoumba mabhondi akabatana ane maatomu mana ari padyo, nokudaro achigadzira chimiro chedhaimondi.Chimiro ichi chine simba rakasimba rekusunga uye kutungamira, nokudaro zvichiita kuti dhaimondi riome zvakanyanya.Nekuda kwekuti chimiro chepolycrystalline diamond (PCD) muviri wakanyoroveswa wedhaimondi rakatsetseka rine mativi akasiyana, kuomarara kwayo uye kupfeka kuramba kuchiri kwakadzikira pane kuya kwedhaimondi rekristaro rimwechete zvisinei nekuwedzerwa kwebinder.Nekudaro, PCD sintered body is isotropic, saka hazvisi nyore kutsemuka nendege imwe chete yakatsemuka.
2. Kusiyana kwezviratidzo zvekushanda
Kuoma kwePCD kunogona kusvika 8000HV, 80 ~ 120 nguva dzeiyo simende carbide;Muchidimbu, PCD ine hupenyu hurefu hwesevhisi uye inovandudza kugadzirwa kwakanaka.
Thermal conductivity yePCD ndeye 700W / mK, 1.5 ~ 9 nguva dzeiyo cemented carbide, uye kunyange yakakwirira kudarika yePCBN nemhangura, saka kupisa kwekushisa kwePCD zvishandiso kunokurumidza;
Iko friction coefficient yePCD inowanzova 0.1 ~ 0.3 chete (iyo friction coefficient ye cemented carbide ndeye 0.4 ~ 1), saka maturusi ePCD anogona kuderedza zvakanyanya simba rekucheka;
Iyo coefficient yekuwedzera kwekushisa kwePCD inongova 0.9 × 10 ^ -6～1.18 × 10 ^ - 6, iyo inongova 1/5 ye carbide yakasimbiswa, saka kupisa kwekushisa kwePCD tool kuduku uye machining accuracy akakwirira;
Kubatana pakati pePCD chishandiso uye nonferrous simbi uye isiri-simbi zvinhu idiki kwazvo, uye machipisi haasi nyore kusungirira pane chishandiso tipi kugadzira chip deposit panguva yekugadzirisa.
Nguva yekutumira: Feb-23-2023