Cov cuab yeej PCD yog ua los ntawm cov pob zeb diamond polycrystalline thiab cov carbide matrix los ntawm kev kub siab thiab siab sintering. Nws tsis tsuas yog muab kev ua si tag nrho rau qhov zoo ntawm kev nyuaj siab, kev ua kom sov siab, kev sib txhuam qis, kev nthuav dav thermal qis, kev sib raug zoo me me nrog hlau thiab tsis yog hlau, modulus siab elastic, tsis muaj qhov chaw txiav, isotropic, tab sis kuj xav txog lub zog siab ntawm cov hlau tawv.
Kev ruaj khov ntawm thermal, kev cuam tshuam thiab kev tiv taus hnav yog cov cim qhia kev ua tau zoo tseem ceeb ntawm PCD. Vim tias nws feem ntau siv rau hauv qhov kub thiab txias thiab qhov chaw muaj kev ntxhov siab, kev ruaj khov thermal yog qhov tseem ceeb tshaj plaws. Kev tshawb fawb qhia tau hais tias kev ruaj khov thermal ntawm PCD muaj feem cuam tshuam loj heev rau nws qhov kev tiv taus hnav thiab kev cuam tshuam. Cov ntaub ntawv qhia tau hais tias thaum qhov kub siab dua 750 ℃, kev tiv taus hnav thiab kev cuam tshuam ntawm PCD feem ntau txo qis 5% -10%.
Lub xeev siv lead ua ntawm PCD txiav txim siab nws cov khoom. Hauv microstructure, cov pa roj carbon atoms tsim covalent bonds nrog plaub lub atoms sib ze, tau txais cov qauv tetrahedral, thiab tom qab ntawd tsim cov atomic siv lead ua, uas muaj kev taw qhia muaj zog thiab lub zog khi, thiab qhov nyuaj siab. Cov ntsuas kev ua tau zoo tseem ceeb ntawm PCD yog raws li nram no: ① qhov nyuaj tuaj yeem ncav cuag 8000 HV, 8-12 zaug ntawm carbide; ② thermal conductivity yog 700W / mK, 1.5-9 zaug, txawm tias siab dua PCBN thiab tooj liab; ③ coefficient sib txhuam feem ntau tsuas yog 0.1-0.3, tsawg dua 0.4-1 ntawm carbide, txo qhov txiav zog; ④ thermal expansion coefficient tsuas yog 0.9x10-6-1.18x10-6,1 / 5 ntawm carbide, uas tuaj yeem txo qhov thermal deformation thiab txhim kho qhov tseeb ntawm kev ua; ⑤ thiab cov ntaub ntawv tsis yog hlau muaj qhov sib raug zoo tsawg dua los tsim cov nodules.
Cubic boron nitride muaj zog tiv taus oxidation thiab tuaj yeem ua cov khoom muaj hlau, tab sis qhov nyuaj qis dua li pob zeb diamond ib leeg, qhov ceev ua tiav qeeb thiab qhov ua tau zoo tsawg. Pob zeb diamond ib leeg muaj qhov nyuaj siab, tab sis qhov tawv tsis txaus. Anisotropy ua rau nws yooj yim rau kev sib cais raws (111) nto hauv qab kev cuam tshuam ntawm lub zog sab nraud, thiab qhov ua tau zoo ntawm kev ua tiav yog txwv. PCD yog ib qho polymer synthesized los ntawm cov pob zeb diamond me me micron los ntawm qee txoj kev. Qhov xwm txheej chaotic ntawm kev sib sau ua ke ntawm cov khoom me me ua rau nws qhov xwm txheej macroscopic isotropic, thiab tsis muaj qhov kev taw qhia thiab qhov sib cais ntawm qhov chaw hauv lub zog tensile. Piv nrog pob zeb diamond ib leeg, ciam teb ntawm PCD txo qhov anisotropy thiab ua kom zoo dua cov khoom siv kho tshuab.
1. Cov ntsiab cai tsim ntawm PCD cov cuab yeej txiav
(1) Kev xaiv qhov loj me ntawm PCD particle tsim nyog
Hauv kev xav, PCD yuav tsum sim ua kom cov noob zoo, thiab kev faib cov khoom ntxiv ntawm cov khoom yuav tsum sib xws li sai tau kom kov yeej qhov anisotropy. Kev xaiv ntawm PCD qhov loj me kuj tseem cuam tshuam rau cov xwm txheej ua tiav. Feem ntau hais lus, PCD nrog lub zog siab, zoo toughness, zoo cuam tshuam thiab cov noob zoo tuaj yeem siv rau kev ua tiav lossis super finishing, thiab PCD ntawm cov noob loj tuaj yeem siv rau kev ua haujlwm dav dav. Qhov loj me ntawm PCD tuaj yeem cuam tshuam rau kev ua haujlwm hnav ntawm cov cuab yeej. Cov ntaub ntawv cuam tshuam taw qhia tias thaum cov khoom siv raw loj, qhov kev tiv thaiv hnav maj mam nce nrog qhov txo qis ntawm qhov loj me ntawm cov noob, tab sis thaum qhov loj me ntawm cov noob me heev, txoj cai no tsis siv tau.
Cov kev sim cuam tshuam tau xaiv plaub lub hmoov pob zeb diamond nrog qhov nruab nrab ntawm 10um, 5um, 2um thiab 1um, thiab nws tau xaus lus tias: ① Nrog rau qhov txo qis ntawm qhov loj me ntawm cov khoom siv raw, Co diffuses ntau dua; nrog rau qhov txo qis ntawm ②, qhov kev tiv thaiv hnav thiab kev tiv thaiv cua sov ntawm PCD maj mam txo qis.
(2) Kev xaiv tsim nyog ntawm daim ntawv qhov ncauj hniav thiab cov hniav tuab
Cov qauv ntawm lub qhov ncauj hniav feem ntau muaj plaub lub qauv: ntug tig rov qab, lub voj voog tsis muaj zog, ntug tig rov qab sib xyaw thiab lub kaum ntse ntse. Lub qauv ntse ua rau ntug ntse, qhov ceev txiav ceev, tuaj yeem txo qhov kev siv zog txiav thiab burr, txhim kho qhov zoo ntawm cov khoom, nws tsim nyog dua rau cov hlau txhuas silicon qis thiab lwm yam hlau uas tsis muaj zog, sib xws. Lub qauv puag ncig obtuse tuaj yeem ua rau lub qhov ncauj hniav dhau, tsim lub kaum sab xis R, tiv thaiv cov hniav tawg, tsim nyog rau kev ua cov hlau txhuas silicon nruab nrab / siab. Hauv qee qhov xwm txheej tshwj xeeb, xws li qhov tob txiav tsis tob thiab kev pub riam me me, cov qauv puag ncig blunt yog qhov nyiam dua. Lub qauv ntug tig rov qab tuaj yeem ua rau cov npoo thiab ces kaum ntau dua, ua kom cov hniav ruaj khov, tab sis tib lub sijhawm yuav ua rau lub siab thiab kev tiv thaiv txiav ntau dua, tsim nyog dua rau kev txiav hnyav hnyav silicon siab txhuas alloy.
Yuav kom yooj yim rau EDM, feem ntau xaiv ib txheej PDC nyias nyias (0.3-1.0 hli), ntxiv rau txheej carbide, tag nrho cov tuab ntawm cov cuab yeej yog li 28 hli. Cov txheej carbide yuav tsum tsis txhob tuab dhau kom tsis txhob muaj kev faib ua pawg los ntawm qhov sib txawv ntawm kev ntxhov siab ntawm cov nplaim sib txuas.
2, PCD cov cuab yeej tsim khoom txheej txheem
Cov txheej txheem tsim khoom ntawm PCD cuab yeej txiav txim siab ncaj qha rau qhov kev ua tau zoo ntawm kev txiav thiab lub neej ua haujlwm ntawm cov cuab yeej, uas yog qhov tseem ceeb rau nws daim ntawv thov thiab kev txhim kho. Cov txheej txheem tsim khoom ntawm PCD cuab yeej tau qhia nyob rau hauv Daim Duab 5.
(1) Kev tsim cov ntsiav tshuaj PCD sib xyaw (PDC)
① Cov txheej txheem tsim khoom ntawm PDC
PDC feem ntau yog ua los ntawm cov hmoov pob zeb diamond ntuj lossis hluavtaws thiab cov neeg sawv cev khi ntawm qhov kub siab (1000-2000 ℃) thiab siab siab (5-10 atm). Tus neeg sawv cev khi tsim lub choj khi nrog TiC, Sic, Fe, Co, Ni, thiab lwm yam ua cov khoom tseem ceeb, thiab lub pob zeb diamond siv lead ua ke nyob rau hauv lub pob txha ntawm lub choj khi hauv daim ntawv ntawm covalent bond. PDC feem ntau yog ua rau hauv cov disks nrog lub cheeb tsam ruaj khov thiab tuab, thiab sib tsoo thiab polished thiab lwm yam kev kho mob lub cev thiab tshuaj lom neeg. Hauv qhov tseem ceeb, daim ntawv zoo tagnrho ntawm PDC yuav tsum khaws cov yam ntxwv zoo ntawm lub cev pob zeb diamond siv lead ua ke ntau li ntau tau, yog li ntawd, cov khoom ntxiv hauv lub cev sintering yuav tsum tsawg li ntau tau, tib lub sijhawm, cov khoom me me DD bond ua ke ntau li ntau tau,
② Kev faib tawm thiab kev xaiv cov binders
Cov binder yog qhov tseem ceeb tshaj plaws uas cuam tshuam rau qhov thermal stability ntawm PCD cuab yeej, uas cuam tshuam ncaj qha rau nws qhov hardness, hnav tsis kam thiab thermal stability. Cov txheej txheem PCD bonding feem ntau yog: hlau, cobalt, nickel thiab lwm yam hlau hloov pauv. Co thiab W sib xyaw hmoov tau siv ua tus neeg sawv cev bonding, thiab kev ua tau zoo ntawm PCD sintering zoo tshaj plaws thaum lub siab synthesis yog 5.5 GPa, qhov kub sintering yog 1450 ℃ thiab rwb thaiv tsev rau 4 feeb. SiC, TiC, WC, TiB2, thiab lwm yam khoom siv ceramic. SiC Lub thermal stability ntawm SiC zoo dua li ntawm Co, tab sis qhov hardness thiab fracture toughness yog qis dua. Kev txo qis ntawm cov khoom siv raw loj tuaj yeem txhim kho qhov hardness thiab toughness ntawm PCD. Tsis muaj nplaum, nrog graphite lossis lwm yam carbon qhov chaw hauv qhov kub ultra-high thiab siab siab hlawv rau hauv nanoscale polymer pob zeb diamond (NPD). Siv graphite ua tus precursor los npaj NPD yog qhov xav tau tshaj plaws, tab sis cov khoom siv hluavtaws NPD muaj qhov hardness siab tshaj plaws thiab cov khoom siv kho tshuab zoo tshaj plaws.
Kev xaiv thiab kev tswj hwm ntawm ③ cov nplej
Cov hmoov pob zeb diamond raw yog ib qho tseem ceeb uas cuam tshuam rau kev ua haujlwm ntawm PCD. Ua ntej kho cov hmoov pob zeb diamond micropowder, ntxiv me ntsis cov tshuaj uas cuam tshuam kev loj hlob ntawm cov pob zeb diamond tsis zoo thiab xaiv cov tshuaj ntxiv sintering kom raug tuaj yeem tiv thaiv kev loj hlob ntawm cov pob zeb diamond tsis zoo.
NPD ntshiab siab nrog cov qauv sib xws tuaj yeem tshem tawm qhov anisotropy thiab txhim kho cov khoom siv kho tshuab ntxiv. Cov hmoov nanographite precursor uas npaj los ntawm txoj kev sib tsoo pob siab zog tau siv los tswj cov pa oxygen ntawm qhov kub siab ua ntej sintering, hloov graphite mus rau hauv pob zeb diamond hauv qab 18 GPa thiab 2100-2300 ℃, tsim cov lamella thiab granular NPD, thiab qhov nyuaj nce nrog qhov txo qis ntawm lamella thickness.
④ Kev kho mob tshuaj lig
Ntawm tib qhov kub (200 ° ℃) thiab lub sijhawm (20 teev), qhov kev tshem tawm cobalt ntawm Lewis acid-FeCl3 zoo dua li dej, thiab qhov piv zoo tshaj plaws ntawm HCl yog 10-15g / 100ml. Kev ruaj khov thermal ntawm PCD zoo dua thaum qhov tob tshem tawm cobalt nce ntxiv. Rau kev loj hlob ntawm PCD, kev kho mob acid muaj zog tuaj yeem tshem tawm Co tag nrho, tab sis muaj kev cuam tshuam loj rau kev ua tau zoo ntawm polymer; ntxiv TiC thiab WC los hloov cov qauv polycrystal hluavtaws thiab sib xyaw nrog kev kho mob acid muaj zog los txhim kho kev ruaj khov ntawm PCD. Tam sim no, cov txheej txheem npaj ntawm PCD cov ntaub ntawv zoo dua, cov khoom tawv zoo, anisotropy tau zoo dua, tau pom kev tsim khoom lag luam, kev lag luam cuam tshuam tab tom txhim kho sai.
(2) Kev ua cov hniav PCD
① txheej txheem txiav
PCD muaj qhov nyuaj siab, tiv taus kev hnav zoo thiab cov txheej txheem txiav nyuaj heev.
② txoj kev vuam
PDC thiab lub cev riam los ntawm kev siv lub tshuab clamp, kev sib txuas thiab kev sib txhuam. Kev sib txhuam yog nias PDC rau ntawm cov carbide matrix, suav nrog kev sib txhuam nqus tsev, kev sib txhuam nqus tsev diffusion, kev sib txhuam cua sov induction siab zaus, kev sib txhuam laser, thiab lwm yam. Kev sib txhuam cua sov induction siab zaus muaj tus nqi qis thiab rov qab zoo, thiab tau siv dav. Qhov zoo ntawm kev sib txhuam yog cuam tshuam nrog cov flux, kev sib txhuam hlau thiab qhov kub ntawm kev sib txhuam. Qhov kub ntawm kev sib txhuam (feem ntau qis dua 700 ° ℃) muaj qhov cuam tshuam loj tshaj plaws, qhov kub siab dhau, yooj yim ua rau PCD graphitization, lossis txawm tias "hlawv dhau", uas cuam tshuam ncaj qha rau qhov cuam tshuam ntawm kev sib txhuam, thiab qhov kub qis dhau yuav ua rau tsis txaus lub zog vuam. Qhov kub ntawm kev sib txhuam tuaj yeem tswj tau los ntawm lub sijhawm rwb thaiv tsev thiab qhov tob ntawm PCD liab.
③ txheej txheem sib tsoo hniav
Cov txheej txheem sib tsoo PCD yog qhov tseem ceeb rau cov txheej txheem tsim khoom. Feem ntau, tus nqi siab tshaj plaws ntawm cov hniav thiab cov hniav yog nyob rau hauv 5um, thiab lub vojvoog arc yog nyob rau hauv 4um; qhov chaw txiav pem hauv ntej thiab tom qab ua kom muaj qhov tiav ntawm qhov chaw, thiab txawm tias txo qhov chaw txiav pem hauv ntej Ra rau 0.01 μ m kom ua tau raws li qhov yuav tsum tau ua ntawm daim iav, ua rau cov chips ntws raws qhov chaw ntawm cov hniav pem hauv ntej thiab tiv thaiv riam lo.
Cov txheej txheem sib tsoo hniav suav nrog lub log sib tsoo pob zeb diamond, lub log sib tsoo hluav taws xob (EDG), lub log sib tsoo hlau superhard abrasive online electrolytic finishing sib tsoo hniav (ELID), kev sib tsoo hniav sib xyaw ua ke. Ntawm lawv, lub log sib tsoo pob zeb diamond yog qhov paub tab tshaj plaws, siv dav tshaj plaws.
Cov kev sim cuam tshuam: ① lub log sib tsoo cov khoom me me yuav ua rau cov hniav tawg loj heev, thiab qhov loj ntawm cov khoom me me ntawm lub log sib tsoo txo qis, thiab qhov zoo ntawm cov hniav zoo dua; qhov loj ntawm cov khoom me me ntawm ② lub log sib tsoo muaj feem cuam tshuam nrog qhov zoo ntawm cov hniav ntawm cov khoom me me lossis cov khoom me me ultrafine PCD cov cuab yeej, tab sis muaj cov nyhuv tsawg rau cov cuab yeej PCD cov khoom me me.
Kev tshawb fawb cuam tshuam hauv tsev thiab txawv teb chaws feem ntau tsom mus rau lub tshuab thiab cov txheej txheem ntawm kev sib tsoo hniav. Hauv lub tshuab sib tsoo hniav, kev tshem tawm thermochemical thiab kev tshem tawm tshuab yog qhov tseem ceeb, thiab kev tshem tawm brittle thiab kev tshem tawm qaug zog yog qhov me me. Thaum sib tsoo, raws li lub zog thiab kev tiv thaiv kub ntawm cov neeg sawv cev sib txawv ntawm cov pob zeb diamond sib tsoo log, txhim kho qhov ceev thiab zaus viav vias ntawm lub log sib tsoo kom deb li deb tau, zam kev brittleness thiab kev tshem tawm qaug zog, txhim kho qhov sib piv ntawm kev tshem tawm thermochemical, thiab txo qhov roughness ntawm qhov chaw. Qhov roughness ntawm qhov chaw ntawm kev sib tsoo qhuav yog qis, tab sis yooj yim vim yog qhov kub siab ua haujlwm, hlawv qhov chaw ntawm cov cuab yeej,
Cov txheej txheem sib tsoo hniav yuav tsum tau them sai sai rau: ① xaiv cov txheej txheem sib tsoo hniav tsim nyog, tuaj yeem ua rau qhov zoo ntawm ntug qhov ncauj zoo dua, qhov ua tiav ntawm sab pem hauv ntej thiab sab nraub qaum ntawm hniav siab dua. Txawm li cas los xij, kuj xav txog lub zog sib tsoo siab, kev poob loj, kev ua haujlwm sib tsoo qis, thiab tus nqi siab; ② xaiv qhov zoo ntawm lub log sib tsoo, suav nrog hom binder, qhov loj me ntawm cov khoom me me, kev sib sau ua ke, binder, kev hnav lub log sib tsoo, nrog rau qhov xwm txheej sib tsoo hniav qhuav thiab ntub tsim nyog, tuaj yeem ua kom zoo dua lub ces kaum pem hauv ntej thiab tom qab ntawm lub cuab yeej, tus nqi passivation ntawm lub taub hau riam thiab lwm yam, thaum txhim kho qhov zoo ntawm qhov chaw ntawm lub cuab yeej.
Cov log sib tsoo pob zeb diamond sib txuas sib txawv muaj cov yam ntxwv sib txawv, thiab cov txheej txheem sib tsoo thiab cov nyhuv sib txawv. Cov log xuab zeb pob zeb diamond resin binder yog mos, cov khoom sib tsoo yooj yim poob ua ntej lub sijhawm, Tsis muaj kev tiv taus kub, Qhov chaw yooj yim deformed los ntawm cua sov, Qhov chaw sib tsoo hniav yog qhov yooj yim hnav, Qhov ntxhib loj; Cov log sib tsoo pob zeb diamond binder hlau yog khaws cia ntse los ntawm kev sib tsoo, Zoo formability, surfaced, Qhov ntxhib qis ntawm qhov chaw ntawm cov hniav sib tsoo, Kev ua haujlwm siab dua, Txawm li cas los xij, lub peev xwm sib tsoo ntawm cov khoom sib tsoo ua rau qhov kev ntse tus kheej tsis zoo, Thiab ntug txiav yooj yim tawm qhov sib txawv, Ua rau muaj kev puas tsuaj loj heev; Cov log sib tsoo pob zeb diamond binder ceramic muaj lub zog nruab nrab, Kev ua haujlwm tus kheej zoo, Ntau lub qhov sab hauv, Nyiam rau kev tshem tawm plua plav thiab cua sov dissipation, Tuaj yeem hloov kho rau ntau yam dej txias, Qhov kub sib tsoo qis, Lub log sib tsoo tsis hnav, Khaws cov duab zoo, Qhov tseeb ntawm qhov ua haujlwm siab tshaj plaws, Txawm li cas los xij, lub cev ntawm pob zeb diamond sib tsoo thiab binder ua rau muaj qhov ntawm qhov chaw ntawm cov cuab yeej. Siv raws li cov ntaub ntawv ua tiav, kev sib tsoo zoo, kev ruaj khov abrasive thiab qhov zoo ntawm qhov chaw ntawm cov khoom siv.
Cov kev tshawb fawb txog kev sib tsoo ua haujlwm zoo feem ntau tsom mus rau kev txhim kho kev tsim khoom thiab kev tswj tus nqi. Feem ntau, qhov nrawm sib tsoo Q (PCD raug tshem tawm ib lub sijhawm) thiab qhov hnav piv G (piv ntawm PCD raug tshem tawm rau lub log sib tsoo poob) yog siv ua cov qauv ntsuas.
Tus kws tshawb fawb German KENTER sib tsoo PCD cuab yeej nrog lub siab tas li, sim: ① nce qhov ceev ntawm lub log sib tsoo, PDC qhov loj me thiab cov dej txias concentration, qhov sib tsoo ceev thiab qhov sib piv hnav raug txo qis; ② nce qhov loj me ntawm cov khoom sib tsoo, nce qhov siab tas li, nce qhov concentration ntawm pob zeb diamond hauv lub log sib tsoo, qhov sib tsoo ceev thiab qhov sib piv hnav nce ntxiv; ③ hom binder txawv, qhov sib tsoo ceev thiab qhov sib piv hnav txawv. KENTER Cov txheej txheem sib tsoo hniav ntawm PCD cuab yeej tau kawm txog kev ua haujlwm, tab sis qhov cuam tshuam ntawm cov txheej txheem sib tsoo hniav tsis tau soj ntsuam tsis tu ncua.
3. Kev siv thiab kev ua tsis tiav ntawm cov cuab yeej txiav PCD
(1) Kev xaiv cov cuab yeej txiav cov txheej txheem
Thaum lub sijhawm pib siv PCD cuab yeej, lub qhov ncauj ntse maj mam dhau mus, thiab qhov zoo ntawm qhov chaw ua haujlwm tau zoo dua. Kev siv Passivation tuaj yeem tshem tawm qhov me me thiab cov burrs me me uas los ntawm kev sib tsoo hniav, txhim kho qhov zoo ntawm qhov chaw ntawm ntug txiav, thiab tib lub sijhawm, tsim cov ntug voj voog kom nias thiab kho qhov chaw ua tiav, yog li txhim kho qhov zoo ntawm qhov chaw ua haujlwm.
PCD cuab yeej nto milling aluminium alloy, qhov ceev txiav feem ntau yog 4000m / feeb, qhov ua qhov feem ntau yog 800m / feeb, kev ua cov hlau uas tsis yog ferrous-plastic siab elastic yuav tsum siv qhov ceev tig siab dua (300-1000m / feeb). Feem ntau pom zoo kom pub ntim ntawm 0.08-0.15mm / r. Ntim pub loj dhau, lub zog txiav ntau ntxiv, thaj chaw geometric seem ntawm qhov chaw ua haujlwm ntxiv; Ntim pub me dhau, cua sov txiav ntau ntxiv, thiab hnav ntau ntxiv. Qhov tob txiav nce, lub zog txiav nce, cua sov txiav nce, lub neej txo qis, qhov tob txiav ntau dhau tuaj yeem ua rau hniav tawg yooj yim; qhov tob txiav me me yuav ua rau machining hardening, hnav thiab txawm tias hniav tawg.
(2) Daim ntawv hnav
Vim muaj kev sib txhuam, kub thiab lwm yam ua rau cov cuab yeej ua haujlwm hnav tsis zam. Kev hnav ntawm cov cuab yeej pob zeb diamond muaj peb theem: theem hnav sai sai (tseem hu ua theem hloov pauv), theem hnav ruaj khov nrog tus nqi hnav tas li, thiab theem hnav sai tom qab. Theem hnav sai qhia tias cov cuab yeej tsis ua haujlwm thiab xav tau kev sib tsoo dua. Cov qauv hnav ntawm cov cuab yeej txiav suav nrog kev hnav nplaum (kev hnav vuam txias), kev hnav diffusion, kev hnav abrasive, kev hnav oxidation, thiab lwm yam.
Txawv ntawm cov cuab yeej ib txwm muaj, daim ntawv hnav ntawm PCD cov cuab yeej yog kev hnav nplaum, kev hnav diffusion thiab kev puas tsuaj ntawm polycrystalline txheej. Ntawm lawv, kev puas tsuaj ntawm polycrystal txheej yog qhov laj thawj tseem ceeb, uas yog qhia tias yog qhov tawg ntawm cov hniav me me los ntawm kev cuam tshuam sab nraud lossis poob ntawm cov nplaum hauv PDC, tsim ib qho sib txawv, uas yog los ntawm kev puas tsuaj rau lub cev, uas tuaj yeem ua rau kev ua haujlwm raug txo qis thiab cov khoom seem. PCD qhov loj me ntawm cov khoom me me, daim ntawv hniav, lub kaum sab xis ntawm cov hniav, cov khoom siv ua haujlwm thiab cov txheej txheem ua haujlwm yuav cuam tshuam rau lub zog ntawm cov hniav hniav thiab lub zog txiav, thiab tom qab ntawd ua rau kev puas tsuaj ntawm cov txheej polycrystal. Hauv kev xyaum ua haujlwm engineering, qhov loj me ntawm cov khoom siv raw, cov txheej txheem cuab yeej thiab cov txheej txheem ua haujlwm yuav tsum tau xaiv raws li cov xwm txheej ua haujlwm.
4. Kev loj hlob ntawm cov cuab yeej txiav PCD
Tam sim no, ntau yam kev siv PCD cov cuab yeej tau nthuav dav los ntawm kev tig ib txwm mus rau kev khawb, milling, txiav ceev ceev, thiab tau siv dav hauv tsev thiab txawv teb chaws. Kev txhim kho sai ntawm cov tsheb fais fab tsis yog tsuas yog coj kev cuam tshuam rau kev lag luam tsheb ib txwm muaj, tab sis kuj coj cov teeb meem tsis tau muaj dua los rau kev lag luam cuab yeej, txhawb kom kev lag luam cuab yeej ua kom nrawm dua qhov kev ua kom zoo dua thiab kev tsim kho tshiab.
Kev siv dav dav ntawm PCD cov cuab yeej txiav tau ua rau kev tshawb fawb thiab kev tsim cov cuab yeej txiav tob zuj zus thiab txhawb nqa. Nrog rau kev tshawb fawb tob zuj zus, PDC cov lus qhia tau txais me dua thiab me dua, kev ua kom zoo dua ntawm cov noob, kev ua haujlwm sib xws, kev sib tsoo nrawm thiab kev hnav piv siab dua thiab siab dua, cov duab thiab cov qauv sib txawv. Cov lus qhia tshawb fawb ntawm PCD cov cuab yeej suav nrog: ① tshawb fawb thiab tsim cov txheej PCD nyias; ② tshawb fawb thiab tsim cov khoom siv cuab yeej PCD tshiab; ③ tshawb fawb kom zoo dua cov cuab yeej PCD vuam thiab txo nqi ntxiv; ④ tshawb fawb txhim kho PCD cov cuab yeej hniav sib tsoo txheej txheem kom txhim kho kev ua haujlwm; ⑤ tshawb fawb txhim kho cov cuab yeej PCD thiab siv cov cuab yeej raws li cov xwm txheej hauv zos; ⑥ tshawb fawb xaiv cov kev txiav raws li cov ntaub ntawv ua tiav.
kev piav qhia luv luv
(1) PCD cov cuab yeej txiav kev ua tau zoo, ua kom muaj qhov tsis txaus ntawm ntau cov cuab yeej carbide; tib lub sijhawm, tus nqi qis dua li cov cuab yeej pob zeb diamond ib leeg, hauv kev txiav niaj hnub no, yog cov cuab yeej zoo cog lus;
(2) Raws li hom thiab kev ua tau zoo ntawm cov ntaub ntawv ua tiav, kev xaiv tsim nyog ntawm qhov loj me ntawm cov khoom me me thiab cov yam ntxwv ntawm PCD cov cuab yeej, uas yog lub hauv paus ntawm kev tsim khoom siv thiab siv cov cuab yeej,
(3) Cov khoom siv PCD muaj qhov nyuaj siab, uas yog cov khoom zoo tshaj plaws rau kev txiav riam, tab sis nws kuj coj qhov nyuaj rau kev tsim cov cuab yeej txiav. Thaum tsim khoom, yuav tsum xav txog qhov nyuaj ntawm cov txheej txheem thiab cov kev xav tau ua tiav, txhawm rau ua tiav qhov kev ua tau zoo tshaj plaws;
(4) Cov ntaub ntawv ua PCD hauv riam lub nroog, peb yuav tsum xaiv cov kev txiav txim siab kom raug, raws li kev ua tau zoo ntawm cov khoom, kom deb li deb tau kom txuas lub neej ua haujlwm ntawm cov cuab yeej kom ua tiav qhov sib npaug ntawm lub neej cuab yeej, kev ua haujlwm zoo thiab cov khoom zoo;
(5) Tshawb nrhiav thiab tsim cov khoom siv PCD tshiab los kov yeej nws cov teeb meem uas muaj nyob hauv
Tsab xov xwm no yog los ntawm "cov khoom siv superhard network"
Lub sijhawm tshaj tawm: Lub Peb Hlis-25-2025
