Kev tsim cov txheej txheem ntawm pob zeb diamond hniav
Lub pob zeb diamond hniav yog cov cuab yeej tshwj xeeb rau laser txiav, uas yog siv dav hauv kev tsim thiab ua cov ntaub ntawv nyuaj thiab nkig xws li marble thiab porcelain. Lub pob zeb diamond hniav yog tsim los ntawm ob ntu; lub substrate thiab lub taub hau cutter. Lub substrate yog qhov kev txhawb nqa tseem ceeb rau kev sib txuas lub taub hau cutter. , thiab lub taub hau cutter yog ib feem ntawm lub laser txiav thaum lub sij hawm daim ntawv thov txheej txheem. Lub taub hau cutter yuav tau noj tas li thaum siv, thaum lub substrate tsis yooj yim. Lub taub hau cutter feem ntau tuaj yeem ua laser txiav vim tias nws muaj pob zeb diamond, Pob zeb diamond yog tam sim no cov khoom siv tawv tshaj plaws, uas rub cov khoom txiav hauv lub taub hau cutter. Cov pob zeb diamond hais yog encapsulated nyob rau hauv lub taub hau cutter los ntawm cov ntaub ntawv hlau. Thaum lub sij hawm daim ntawv thov txheej txheem, cov hlau embryo thiab lub pob zeb diamond ua ke Feem ntau, qhov zoo tagnrho qhov teeb meem yog hais tias kev noj cov hlau lub cev yog sai dua li cov kub thiab hlau, uas tsis tau tsuas yog xyuas kom meej lub sharpness ntawm lub cutter lub taub hau tab sis kuj xyuas kom meej ntev. kev pab cuam lub neej ntawm lub taub hau cutter.
Nrog rau kev loj hlob sai ntawm tsheb, aviation thiab aerospace, cov kev xav tau ntawm cov khoom siv thiab kev siv tshuab tau nce zuj zus. Cov ntaub ntawv tshiab xws li carbon fiber elastomer cov ntaub ntawv, particle-zoo hlau-raws li polymer cov ntaub ntawv (PRMMC) thiab structural ceramics tau lug siv. Cov ntaub ntawv no muaj cov yam ntxwv ntawm lub zog siab, zoo hnav tsis kam, thiab me me coefficient ntawm expansion, uas txiav txim siab tias lub neej kev pab cuam ntawm cov cuab yeej thaum machining lawv yog luv heev. Kev txhim kho thiab tsim qauv tshiab hnav-tiv taus thiab ruaj khov superhard drilling cuab yeej yog ib qho kev kawm ntawm kev tsim kho tshiab rau ntau lub tsev kawm qib siab thiab tsev kawm qib siab, cov koom haum tshawb fawb thiab cov lag luam. Pob zeb diamond sib xyaw cov cuab yeej siv tshuab, hluav taws xob optics, thermodynamics, acoustic cov ntaub ntawv, electron optics thiab ntau lwm yam khoom zoo heev. Nws muaj zog heev, tsis tshua muaj kev sib txhuam, kev hloov pauv kub, tsis tshua muaj kev nthuav dav coefficient thiab organic chemical plasticity. zoo tagnrho raw khoom.
Tam sim no, muaj plaub lub ntsiab tsim thiab ua cov txheej txheem ntawm pob zeb diamond: yas zaj duab xis txheej cuab yeej, tuab zaj duab xis pob zeb diamond hluav taws xob vuam cuab yeej, pob zeb diamond calcined lub cev cuab yeej thiab ib qho siv lead ua pob zeb diamond.
Yas zaj duab xis txheej cuab yeej
Cov cuab yeej yas zaj duab xis-coated yog cov cuab yeej tsim los ntawm kev tso cov pob zeb diamond yas zaj duab xis rau ntawm cov khoom siv raw nrog zoo rigidity thiab kub yam ntxwv raws li cov organic chemical kua deposition method (CVD).
Vim tias cov txheej txheem thermal deformation ntawm Si3N4 series ceramics, WC-Co series cemented carbide cov cuab yeej thiab lawv cov ntaub ntawv hlau W yog ze rau ntawm pob zeb diamond, qhov kev ntxhov siab sab hauv los ntawm kev tsim cov yeeb yaj kiab yog me me, yog li lawv tuaj yeem siv los ua cov khoom siv hauv paus. riam cev. Nyob rau hauv WC-Co-based cemented carbide cov cuab yeej, lub neej ntawm lub tsev cog khoom theem Co tuaj yeem yooj yim ua rau siab purity graphite tsim ntawm pob zeb diamond zaj duab xis thiab cov khoom siv hauv paus thiab txo cov adhesion zog. Kev npaj kho mob yuav tsum tau tshem tawm qhov kev puas tsuaj ntawm Co ua ntej tso. (Feem ntau, Co yog tshem tawm los ntawm acid etching).
Cov txheej txheem organic chemical ua kua theem tso tawm siv ib txoj hauv kev los qhib cov pa nrog C qhov, thiab nyob rau hauv cov pa roj tsawg heev, cov pa atoms tau tso rau hauv ib qho chaw, thiab cov pa atoms tsim cov pob zeb diamond hauv cov txheej txheem ntawm cohesion thiab tso nyiaj. Kev sib nrig sib. Tam sim no, CVD txoj kev siv los tso pob zeb diamond feem ntau suav nrog: microwave cua sov, kub tungsten hlau, DC fais fab arc spouting txoj kev, thiab lwm yam.
Qhov kom zoo dua ntawm pob zeb diamond yas zaj duab xis yog tias nws tuaj yeem siv rau cov cuab yeej nrog cov duab geometric nyuaj, xws li cov hniav txiav, qhov kawg tig cov cuab yeej, reamers thiab twist xyaum; Nws tuaj yeem siv los laum ntau cov ntaub ntawv uas tsis yog xim hlau, txiav Qhov ceev yog me me, qhov deformation me me, kev ua haujlwm ruaj khov, kev puas tsuaj qeeb, thiab lub workpiece tsis yooj yim deformed. Nws yog qhov tsim nyog rau kev sib sib zog nqus ntawm lub workpiece nrog cov khoom zoo thiab me me qhov ntev ntev. Lub ntsiab qhov tsis zoo yog qhov adhesion ntawm pob zeb diamond zaj duab xis thiab cov khoom siv hauv paus tsis muaj zog, thiab cov cuab yeej pob zeb diamond tsis muaj regrindability.
Pob zeb diamond tuab zaj duab xis hluav taws xob vuam vuam cuab yeej
Cov txheej txheem ntau lawm ntawm pob zeb diamond tuab zaj duab xis hluav taws xob vuam thiab vuam cov cuab yeej feem ntau suav nrog: kev npaj cov pob zeb diamond loj loj; txiav cov pob zeb diamond zaj duab xis rau hauv cov duab thiab specifications tsim nyog rau lub cuab tam; hluav taws xob vuam thiab vuam ntawm cov pob zeb diamond tuab zaj duab xis thiab cov khoom siv raw ntawm cov cuab yeej siv; drilling ntawm pob zeb diamond tuab zaj duab xis cuab yeej Edge sib tsoo thiab polishing. (1) Kev npaj thiab laser txiav ntawm pob zeb diamond tuab zaj duab xis
Cov txheej txheem ua tiav rau kev npaj pob zeb diamond tuab zaj duab xis yog ncaj qha tam sim no plasma technology dej dav hlau CVD txoj kev. Lub pob zeb diamond tau muab tso rau ntawm WC-Co aluminium alloy (daim iav iav ua rau saum npoo), thiab cov pob zeb diamond zaj duab xis ntog tawm thaum lub sij hawm txias ntawm substrate. Txoj kev no muaj qhov tso tawm sai dua (txog 930 μm / h), thiab cov lattice tas li yog sib xyaw ua ke ntau dua, tab sis qhov kev loj hlob ntawm qhov chaw yog qhov ntxhib heev. Lub zog siab, hnav tsis kam thiab tsis ua haujlwm ntawm pob zeb diamond zaj duab xis txiav txim siab nws txoj kev txiav yog fiber ntau laser txiav (txiav tuaj yeem nqa tawm hauv ib puag ncig ntawm cov pa roj, co2 thiab argon). Kev siv fiber ntau laser txiav tuaj yeem tsis tsuas yog txiav cov pob zeb diamond tuab zaj duab xis rau hauv cov duab thiab loj, tab sis kuj txiav tawm lub kaum sab xis ntawm lub cuab yeej, uas muaj qhov zoo ntawm qhov nqaim kerf thiab kev ua haujlwm siab.
Pob zeb diamond Calcined lub cev cuab yeej
Cov pob zeb diamond tuab yog ua tiav los ntawm extrusion thiab sib tsoo rau hauv pob zeb diamond siv lead ua nrog qhov nruab nrab particle loj tis ntawm 32-37 μm, los yog pob zeb diamond muaju yog tau ncaj qha los ntawm ultra-siab siab txoj kev, thiab cov hmoov siv lead ua yog tso rau ntawm WC {{ 2}}wt feem pua Co aluminium alloy , thiab tom qab ntawd tiv thaiv nws nrog Ta foil, calcined ntawm 5.5GPa, 1500 degree rau ib teev los ua lub pob zeb diamond calcined lub cev, thiab cov cuab yeej tig ua los ntawm cov txheej txheem calcined no muaj kev hnav tsis kam.
Tib Crystal Pob Zeb Diamond cuab yeej
Tib siv lead ua pob zeb diamond cov cuab yeej feem ntau kho cov pob zeb diamond ib leeg siv rau ntawm lub taub hau me me, thiab lub taub hau me me yog tsau rau ntawm lub tshuab dhos tig cuab yeej tho txawv nrog cov ntsia hlau lossis pins. Cov txheej txheem tseem ceeb ntawm kev kho cov pob zeb diamond ntawm lub taub hau me me yog: cov txheej txheem kev txhim kho cov txheej txheem (sib tsoo hauv qab ntug thiab qhov siab ntawm pob zeb diamond, thiab nias thiab kho nws ntawm lub taub hau me me nrog pins); hmoov metallurgy txoj kev (lub pob zeb diamond muab tso rau hauv cov hmoov hlau alloy, pressurize thiab calcinate nyob rau hauv lub tshuab nqus tsev twj tso kua mis los txhim kho lub pob zeb diamond ntawm lub me me riam taub hau); kev sib txuas thiab kev sib txuas (siv cov ntaub ntawv tsis muaj kab mob lossis lwm yam khoom siv los kho cov pob zeb diamond). Vim tias qhov sib txawv ntawm qhov sib txawv ntawm cov pob zeb diamond thiab cov khoom siv hauv paus yog qhov loj heev, lub pob zeb diamond yooj yim rau loosen thiab poob.
