Artificial single crystal diamond yakagadziridzwa zvishoma nezvishoma mushure memakore ekuma1950.Iyo inogadzirwa kubva kugraphite seyakagadzirwa zvinhu, yakawedzerwa necatalyst, uye inoiswa pasi pekupisa kwakanyanya uye yakanyanya-yakanyanya kudzvanywa.Artificial polycrystalline diamond (PCD) imhando yepolycrystalline inoumbwa nekupolymerization yehupfu hwedhaimondi uchishandisa mabhinda esimbi akadai seCo, Ni, etc. Artificial polycrystalline diamond imhando yakakosha yehupfu metallurgy chigadzirwa, iyo inokwevera pane dzimwe nzira uye nzira dzehupfu hwakajairwa. metallurgy mukugadzira kwayo nzira.
Munguva yekupisa, nekuda kwekuwedzera kwezvinowedzera, bhiriji rekubatanidza rinoumbwa zvakanyanya neCo, Mo, W, WC, uye Ni rinoumbwa pakati pePCD makristasi, uye madhaimondi akaiswa zvakasimba muchimiro chakasimba chakaumbwa nebhiriji rekubatanidza.Basa resimbi binder ndere kubata zvakasimba dhaimani uye kushandisa zvizere kucheka kwayo.Mukuwedzera, nekuda kwekugoverwa kwemahara kwezviyo mumativi akasiyana-siyana, zvakaoma kuti kutsemuka kupararire kubva kune imwe tsanga kuenda kune imwe, iyo inovandudza zvikuru simba uye kuoma kwePCD.
Muchinyorwa chino, tichapfupikisa muchidimbu mamwe maitiro ePCD kuisa.
1. Ultra yakakwirira kuoma uye kupfeka kusagadzikana: zvisingaenzaniswi mumasikirwo, zvinhu zvine kuomarara kusvika ku10000HV, uye kushomeka kwavo kwekusagadzikana kunosvika zana kune iyo Carbide insert;
2. Kuoma, kupfeka kusagadzikana, microstrength, kuoma mukukuya, uye friction coefficient pakati peanisotropic single crystal diamond crystals uye workpiece zvinhu zvinosiyana zvikuru mumakwikwi ekristal akasiyana uye maitiro.Naizvozvo, kana uchigadzira uye kugadzira imwe crystal diamond maturusi, zvinodikanwa kusarudza nemazvo nzira yekristaro, uye kutaridzika kwekristaro kunofanirwa kuitwa kune madhaimondi zvigadzirwa.Kusarudzwa kwepamberi uye kumashure kwekucheka kwepamusoro kwePCD kucheka maturusi inyaya yakakosha pakugadzira single crystal PCD lathe zvishandiso;
3. Low friction coefficient: Madhaimondi anopinza ane yakaderera friction coefficient pakugadzirisa zvimwe zvisiri-ferrous metal zvinhu zvichienzaniswa nezvimwe zvinoiswa, iyo inenge hafu yeiyo carbides, kazhinji inenge 0.2.
4. Iyo PCD yekucheka kumucheto yakanyanyisa, uye radius isina kujeka yekucheka inogona kuwanzosvika 0.1-0.5um.Uye zvechisikigo zvekristaro maturusi edhaimani anogona kushandiswa mumhando ye0.002-0.005um.Naizvozvo, echisikigo maturusi edhaimani anogona kuita yekupedzisira-yakaonda kucheka uye yekupedzisira-chaiyo machining.
5. Iyo coefficient yekupisa kwekuwedzera kwedhaimondi ine yakaderera coefficient yekuwedzera kwekushisa idiki pane iyo simende carbide, inenge 1/10 yeiyo yepamusoro-speed simbi.Naizvozvo, maturusi ekucheka madhaimani haaburitse akakosha ekupisa kwemafuta, zvichireva kuti shanduko yehukuru hwechishandiso inokonzerwa nekucheka kupisa ishoma, iyo inonyanya kukosha pakurongeka uye ultra precision machining ine yakakwira dimensional precision zvinodiwa.
Kushandiswa kwemidziyo yekucheka madhaimani
PCD kuisainonyanya kushandiswa kucheka kwepamusoro-kumhanya / kubhomba / kugaya kwesimbi isina-ferrous uye isina-ferrous simbi zvinhu, zvakakodzera kugadzirisa zvakasiyana-siyana kupfeka-resistant zvinhu zvisiri zvesimbi zvakadai segirazi fiber uye ceramic zvinhu;Masimbi akasiyana-siyana asina-ferrous: aluminium, titanium, silicon, magnesium, nezvimwewo, pamwe chete nemaitiro akasiyana-siyana asina-ferrous simbi yekupedzisa;
Kukanganisa: kusagadzikana kwekupisa kwekushisa.Kunyangwe chiricho chishandiso chekucheka chine kuomarara kwepamusoro, mamiriro ayo mashoma ari pasi pe700 ℃.Kana tembiricha yekucheka ikadarika 700 ℃, inorasikirwa neiyo yekutanga-yakanyanya kuoma.Ichi ndicho chikonzero maturusi edhaimani asina kukodzera kugadzira masimbi ane ferrous.Nekuda kwekusagadzikana kwemakemikari edhaimondi, iyo kabhoni element mumadhaimani inopindirana nemaatomu esimbi pakupisa kwakanyanya, uye ichashandurwa kuita graphite chimiro, ichiwedzera zvakanyanya kukuvadzwa kwemidziyo.
Nguva yekutumira: May-17-2023