Dab tsi yog Pob Zeb Diamond Tool Manufacturing Method?
Muaj plaub txoj kev ua haujlwm tseem ceeb rau pob zeb diamond: nyias-zaj duab xis txheej cov cuab yeej, tuab-zaj duab xis pob zeb diamond vuam cov cuab yeej, pob zeb diamond sintering cov cuab yeej thiab cov cuab yeej siv lead ua pob zeb diamond ib leeg, ob qho uas peb yuav qhia ua ntej.
1. Cov cuab yeej ua yeeb yaj kiab
Cov cuab yeej zaj duab xis-coated yog cov cuab yeej ua los ntawm cov tshuaj vaptor deposition (CVD) tso cov pob zeb diamond films rau cov ntaub ntawv sib sau ua ke nrog cov khoom zoo nruj thiab kub kub.
Vim tias Si3N4 ceramics, WC-Co carbide thiab hlau W lub thermal expansion system nyob ze rau pob zeb diamond, thermal stress generated los ntawm filmmaking yog me me, yog li nws yuav siv tau raws li cov khoom siv substrate ntawm riam. Nyob rau hauv WC-Co carbide, lub xub ntiag ntawm bonding theem Co ua graphite daim ntawv ntawm lub pob zeb diamond zaj duab xis thiab substrate thiab txo cov adhesion zog, uas yuav tsum tau pre-kho ua ntej deposition kom tshem tawm cov teebmeem ntawm Co (feem ntau deCo los ntawm acid corrosion) .
Cov tshuaj vapor deposition txoj kev yog siv ib txoj kev los qhib cov pa roj uas muaj C, ntawm cov pa roj tsawg heev, kom cov pa roj carbon atoms nyob rau hauv ib qho chaw deposition, carbon atoms nyob rau hauv lub condensation, deposition txheej txheem los tsim ib lub pob zeb diamond theem. CVD txoj kev tso nyiaj pob zeb diamond feem ntau suav nrog: microwave, thermal filament, DC arc txhaj tshuaj thiab lwm yam.
Qhov zoo ntawm cov yeeb yaj kiab pob zeb diamond tuaj yeem siv rau ntau yam ntawm cov cuab yeej geometric complex, xws li cov hniav txiav, kawg mills, reamers thiab laum khoom, tuaj yeem siv los txiav ntau cov ntaub ntawv tsis yog xim hlau, txiav quab yuam me me, me me deformation, ua haujlwm du. , qeeb hnav, workpiece tsis yooj yim rau deform, haum rau cov khoom siv workpiece zoo, me me kam rau ua tiav. Lub ntsiab tsis zoo yog qhov tsis zoo adhesion ntawm pob zeb diamond zaj duab xis thiab substrate, pob zeb diamond zaj duab xis cuab yeej tsis muaj rov sib tsoo.
2. Ib leeg siv lead ua pob zeb diamond cuab yeej
Cov cuab yeej siv lead ua pob zeb ib leeg feem ntau txhim kho pob zeb diamond monocrystalline rau lub taub hau riam, uas tau ruaj ntseg rau riam pas nrig nrog cov ntsia hlau lossis cov phaj siab. Cov txheej txheem tseem ceeb ntawm kev txhim kho pob zeb diamond ntawm lub taub hau riam yog: cov txheej txheem kho tshuab (sib tsoo lub pob zeb diamond puag thiab qhov chaw siab, nias nrog lub phaj siab tsau rau lub taub hau riam), hmoov hlau metallurgy txoj kev (muab pob zeb diamond rau hauv cov hmoov txhuas, sintered nyob rau hauv siab nyob rau hauv ib tug . lub tshuab nqus tsev, kom lub pob zeb diamond yog tsau rau lub taub hau riam), kev sib txuas thiab kev sib khi (siv cov ntaub ntawv inorganic los yog lwm yam binders los kho pob zeb diamond). Vim tias qhov sib txawv ntawm cov coefficient ntawm thermal expansion ntawm pob zeb diamond thiab substrate, pob zeb diamond yog yooj yim rau loosen thiab poob.
