1. Nzira yekuchenesa yezvigadzirwa
Nokuti WBN, HBN, pyrophyllite, graphite, magnesium, iron nezvimwe zvisina kuchena zvinoramba zviri muCBN powder;Mukuwedzera, iyo uye binder powder ine adsorbed oxygen, mhute yemvura, nezvimwewo, izvo zvisingafadzi kunyura.Nokudaro, nzira yekuchenesa yezvigadzirwa ndeimwe yezvibatanidza zvakakosha kuti tive nechokwadi chekushanda kwe synthetic polycrystals.Munguva yekuvandudzwa, takashandisa nzira dzinotevera dzekuchenesa CBN micropowder uye kusunga zvinhu: kutanga, kubata CBN chiratidzo chepfu neNaOH inenge 300C kubvisa pyrophyllite neHBN;Zvadaro bika perchloric acid kubvisa graphite;Chekupedzisira, shandisa HCl kufashaidza pamagetsi ekudziya ndiro kubvisa simbi, woigeza kuti isarerekera nemvura yakadirwa.Co, Ni, Al, etc. inoshandiswa pakubatanidza inobatwa nekuderedza hydrogen.Zvadaro CBN uye binder zvinosanganiswa zvakaenzana maererano nechimwe chikamu uye zvinowedzerwa mu graphite mold, uye inotumirwa muchoto chevacuum ine pressure isingasviki 1E2, inopisa pa 800 ~ 1000 ° C kwe 1h kubvisa tsvina, adsorbed oxygen. uye mhute yemvura pamusoro payo, kuitira kuti iyo CBN yezviyo nzvimbo yakachena kwazvo.
Panyaya yekusarudzwa uye nekuwedzera kwezvinhu zvekusungirirana, mhando dzemabonding agents anoshandiswa parizvino muCBN polycrystals anogona kupfupikiswa muzvikamu zvitatu:
(1) Mabhinda esimbi, akadai saTi, Co, Ni.Cu, Cr, W uye mamwe simbi kana alloys, zviri nyore kupfava pakupisa kwakanyanya, zvichikanganisa hupenyu hwezvishandiso;
(2) Ceramic bond, yakadai seAl2O3, inopesana nekushisa kwepamusoro, asi ine hutsika husina kunaka, uye chishandiso chiri nyore kudonha uye kukuvadza;
(3) Cermet bond, yakadai semhinduro yakasimba inoumbwa ne carbides, nitrides, borides uye Co, Ni, nezvimwewo, inogadzirisa kukanganisa kwemhando mbiri dzepamusoro dzebhondi.Huwandu hwebhainda huchakwana asi husingawandisi.Mhedzisiro yekuedza inoratidza kuti kupfeka kuramba uye kukotama simba repolycrystal zvakabatana neavhareji yemahara nzira (ukobvu hwekubatanidza chikamu chikamu), apo avhareji nzira yemahara iri 0.8 ~ 1.2 μ M, iyo polycrystalline yekupfeka ratio ndiyo yepamusoro, uye huwandu hwebhainda i10% ~ 15% (huwandu hwehuwandu).
2. Cubic boron nitride (CBN) mudziyo embryo inogona kukamurwa kuita mapoka maviri
Imwe ndeyekuisa musanganiswa weCBN uye bonding agent uye simende carbide matrix mumukombe wemolybdenum wakapatsanurwa nemunyu kabhoni chubhu inodzivirira layer.
Imwe yacho ndeyekupinza zvakananga iyo polycrystalline CBN inocheka muviri isina alloy substrate: tora iyo mativi matanhatu-yepamusoro muchina wokudhinda, uye shandisa padivi-inodziya gungano kudziyisa.Unganidza iyo yakasanganiswa CBN diki-upfu, ibate kwenguva yakati pasi pekumanikidza uye kugadzikana, wobva waidonhedza zvishoma nezvishoma kune tembiricha yekamuri uye wozoiburitsa zvishoma nezvishoma kune yakajairwa kumanikidza.Iyo polycrystalline CBN banga embryo inogadzirwa
3. Geometric parameters ye cubic boron nitride (CBN) chishandiso
Hupenyu hwesevhisi ye cubic boron nitride (CBN) chishandiso chakabatana zvakanyanya neiyo geometric paramita.Yakakodzera pamberi uye kumashure makona anogona kuvandudza kukanganisa kupikisa kwechishandiso.Chip kubvisa simba uye kupisa kupisa simba.Kukura kwekona yerake kunokanganisa zvakananga mamiriro ekudzvinyirira ekucheka uye mukati mekunetseka kwemukati weblade.Kuti udzivise kushushikana kwakanyanya kunokonzerwa nekukanganisa kwemechani pane tepi yekushandisa, iyo yakashata yekumberi kona (- 5 ° ~ - 10 °) inowanzo gamuchirwa.Panguva imwecheteyo, kuti uderedze kupfekedzwa kwekona yekumashure, makona makuru uye anobatsira kumashure ari 6 °, radius yetipi rekushandisa ndeye 0.4 - 1.2 mm, uye chamfer ivhu rakatsetseka.
4. Kuongororwa kwe cubic boron nitride (CBN) zvishandiso
Pamusoro pekuyedza indekisi yekuomarara, simba rekukotama, kusimba kwesimba uye zvimwe zvinhu zvemuviri, zvinonyanya kukosha kushandisa yakakwirira-simba erekitironi maikorosikopu kutarisa pamusoro uye kumucheto kwekurapa kwerapi yega yega.Inotevera chiyero chekuongorora, kurongeka kwechiyero, M kukosha, kushivirira kwejometri, kushata kwechishandiso, uyezve kurongedza uye kuchengetera.
Nguva yekutumira: Feb-23-2023