Kev txhim kho thiab kev siv ntawm PDC (polycrystalline pob zeb diamond sib xyaw) cutters rau mining engineering tsis tsuas yog txhim kho pob zeb zoo nkauj xwb - rhuav tshem kev ua haujlwm thiab kev cia siab rau kev ua haujlwm hauv engineering, tab sis kuj ua rau pom tus nqi tshiab tsim los ntawm kev sib sib zog nqus ntawm cov khoom siv science, mechanics, manufacturing processes, and mining engineering at the scientific level. Nws qhov tseem ceeb ntawm kev tshawb fawb yog nyob rau hauv kev ua txhaum ntawm kev ua tau zoo ntawm cov pob zeb tsoos tsoos - cov cuab yeej tawg, tsim kom muaj kev sib raug zoo ntawm cov khoom siv microscopic tsim thiab macroscopic engineering kev ua tau zoo, thiab muab ib qho tshiab theoretical paradigm thiab cov tswv yim txoj hauv kev rau kev txhim kho cov cuab yeej hauv kev ua haujlwm hnyav.
Los ntawm cov ntaub ntawv tshawb fawb pom, lub hauv paus ntawm PDC cutter yog cov qauv sib xyaw ntawm polycrystalline pob zeb diamond txheej thiab cemented carbide matrix. Polycrystalline pob zeb diamond yog tsim los ntawm sintering micron- cov pob zeb diamond me me nyob rau hauv qhov kub thiab txias siab los ntawm cov hlau catalyst los ua ib qho txuas txuas mus rau peb- qhov txuas. Nws hardness yog ze rau ntawm ntuj pob zeb diamond, thiab nws hnav tsis kam deb tshaj li cov pa cemented carbide. Txawm li cas los xij, lub brittleness ntawm ib pob zeb diamond txwv nws daim ntawv thov nyob rau hauv kev cuam tshuam loads. Cov kws tshawb fawb tau ua tiav cov txiaj ntsig zoo ntawm "ultra-nyuaj thiab hnav- tiv taus- muaj zog thiab hnyav load-cov kabmob" los ntawm kev qhia cov cemented carbide matrix thiab optimizing interfacial metallurgical bonding. Qhov kev sib xyaw ua ke no nkag siab tob txog kev nkag siab ntawm kev sib txuas ntawm kev sib txuas ntawm cov khoom siv sib txawv, txhawb kev txhim kho cov khoom siv ua haujlwm zoo thiab cov qauv sib xyaw ua ke ntau hom kev xav, thiab muab cov qauv kev tshawb fawb rau kev txhim kho cov khoom siv hauv lwm yam kev ua haujlwm hnyav.
Hauv kev kawm txog kev siv tshuab thiab pob zeb- rhuav tshem cov txheej txheem, PDC cutter tso tseg qhov cuam tshuam - tsoo hom ntawm tsoos roller cone laum khoom, txais yuav txiav txiav txuas ntxiv. Kev tshawb fawb tshawb fawb, los ntawm kev sim thiab cov lej simulations, qhia tias cov ntsiab lus ntawm shear pob zeb tawg yog tias cov pob zeb diamond txheej ua rau ntawm pob zeb nto nrog lub siab tsis tu ncua, thiab cov kev ntxhov siab shear tsim los ntawm siab - ceev txheeb ze zog ua rau cov yas deformation thiab microcrack propagation nyob rau hauv lub pob zeb, thaum kawg tev nws tawm mus rau hauv tawg. Cov txheej txheem no hloov cov pob zeb macroscopic-tawg teeb meem mus rau hauv qhov kev ntsuam xyuas kev ntxhov siab thiab qhov teeb meem tawg evolution, ua kom nkag siab txog pob zeb txiav tshuab thiab txhawb nqa kev ua kom zoo ntawm pob zeb- cov qauv kev sib tshuam, tso lub hauv paus theoretical rau optimizing txiav tsis thiab kwv yees pob zeb - tawg efficiency.
Kev nce qib hauv kev tsim cov txheej txheem kev tshawb fawb tseem yog ib feem tseem ceeb ntawm kev tshawb fawb tseem ceeb ntawm PDC cutter. Cov kev tswj tsis tau ntawm qhov siab - kub, siab - cov txheej txheem sintering siab (qhov kub thiab txias, qhov sib npaug ntawm qhov sib npaug, thiab lub sijhawm tuav) cuam tshuam ncaj qha rau cov nplej loj thiab qhov ntom ntom ntawm polycrystalline pob zeb diamond txheej; Qhov thib ob sintering ntawm cov ntawv sib xyaw thiab cov matrix suav nrog kev cuam tshuam ntawm kev sib tshuam, kev tswj hwm kev ntxhov siab, thiab kev sib raug zoo ntawm kev sib raug zoo. Cov txheej txheem kev tshawb fawb no tau txhawb txoj kev loj hlob ntawm thermodynamics thiab kinetics nyob rau hauv superhard khoom npaj, txhim kho kev tswj precision ntawm precision kub nias cov cuab yeej, thiab tsim ib tug reusable txheej txheem - qauv- kev ua tau zoo correlation database, muab ib tug scientific hauv paus rau kev lag luam ntau lawm ntawm lwm yam superhard composite Cheebtsam.
Nyob rau theem ntawm kev siv science hauv mining engineering, daim ntawv thov teb ntawm PDC cutter tau txheeb xyuas nws qhov kev hloov pauv raws li cov pob zeb thiab cov pob zeb sib txawv. Raws li qhov no, cov kws tshawb fawb tau tsim cov qauv kev sib txuam ntawm lithology, kev txiav tsis zoo, thiab kev ua haujlwm drilling, hloov kev xaiv ntawm pob zeb- rhuav tshem cov cuab yeej los ntawm kev paub dhau los-tsav mus rau cov ntaub ntawv- thiab kev xav-tsav. Qhov no tsis yog tsuas yog txhim kho tus qauv tsim thiab kev ua haujlwm ntawm kev ua haujlwm mining engineering tab sis kuj tseem muab kev txhawb nqa kev tshawb fawb rau kev sib sib zog nqus mining, nyuaj pob zeb tunneling, thiab kev txhim kho cov peev txheej hauv cov txheej txheem geological nyuaj, txhawb kev hloov pauv ntawm cov mining engineering los ntawm kev dav mus rau kev ua kom zoo thiab ntse.
Tsis tas li ntawd, kev tshawb fawb ntawm PDC cutter tau txhawb kev tsim kom muaj kev sib koom tes sib koom ua ke ntawm kev tsim kho tshiab. Cov kws tshawb fawb txog cov ntaub ntawv, cov kws tshawb fawb txog kev siv tshuab, cov kws tsim khoom tsim khoom, thiab cov kws tshaj lij mining tau sib koom ua ke ntawm cov ncauj lus tshawb fawb, ua kom tiav cov saw hlau tshiab los ntawm kev tshawb fawb txog kev siv engineering. Cov qauv no rhuav tshem cov teeb meem kev qhuab qhia, ua kom cov kev hloov pauv ntawm cov kev tshawb fawb tshawb fawb rau hauv kev tsim khoom, thiab qhia txog kev sib cuam tshuam zoo ntawm kev coj noj coj ua ntawm kev tshawb fawb thiab kev tawm tswv yim engineering hauv kev tsim kho tshiab engineering technology.
Hauv cov ntsiab lus, qhov tseem ceeb ntawm kev tshawb fawb ntawm PDC cutters rau mining engineering tsis yog nyob rau hauv lawv cov kev ua tau zoo dua, tab sis kuj nyob rau hauv lawv lub luag hauj lwm ua lub tsheb rau kev tshawb fawb interdisciplinary. Lawv nkag siab txog peb cov kev nkag siab ntawm cov khoom siv sib xyaw ua ke, pob zeb txiav tshuab, kev tsim cov txheej txheem precision, thiab lawv cov kev hloov pauv mus rau mining engineering. Qhov no muab kev txhawb nqa theoretical thiab cov txheej txheem kev tshoov siab rau cov cuab yeej tsim nyob rau hauv cov xwm txheej huab cua thiab kev txhim kho cov peev txheej nyuaj, ua kom pom qhov tseem ceeb ntawm kev tsav tsheb ntawm kev tshawb fawb tshiab rau engineering kev vam meej.
