Hauv kev ntsuas qhov ntsuas siab heev, qhov tseeb yog qhov tseem ceeb rau kev ntsuas tus nqi ntawm cov khoom siv. Nyob rau xyoo tas los no, 95% ntawm cov khoom siv ntsuas siab heev tau tso tseg cov hlau cam khwb cia ib txwm muaj thiab hloov chaw siv cov granite bases. Tom qab qhov kev hloov pauv hauv kev lag luam no yog qhov kev tshawb pom tshiab los ntawm cov yam ntxwv ntawm nano-level damping ntawm granite bases. Tsab xov xwm no yuav tshuaj xyuas tob txog cov txiaj ntsig tshwj xeeb ntawm granite bases thiab tshawb pom qhov tsis paub meej tom qab lawv dhau los ua "nyiam tshiab" ntawm cov khoom siv ntsuas siab heev.
Cov kev txwv ntawm cov hlau cam khwb cia: Nws nyuaj rau ua kom tau raws li cov kev cai ntsuas siab kawg
Cov hlau cam khwb cia yog ib zaug cov khoom siv tseem ceeb rau lub hauv paus ntawm cov khoom siv ntsuas thiab tau siv dav vim nws tus nqi qis thiab yooj yim ua. Txawm li cas los xij, hauv cov xwm txheej ntsuas siab, cov kev txwv ntawm cov hlau cam khwb cia tau dhau los ua qhov tseem ceeb. Ntawm ib sab tes, cov hlau cam khwb cia muaj kev ruaj khov thermal tsis zoo, nrog rau cov coefficient thermal expansion siab txog 11-12 × 10⁻⁶ / ℃. Thaum cov khoom siv tsim cua sov thaum lub sijhawm ua haujlwm lossis qhov kub thiab txias hloov pauv, nws yooj yim rau thermal deformation, ua rau muaj kev hloov pauv ntawm qhov ntsuas siv. Ntawm qhov tod tes, cov qauv sab hauv ntawm cov hlau cam khwb cia muaj cov qhov me me, thiab nws cov kev ua haujlwm vibration damping tsis txaus, ua rau nws tsis tuaj yeem nqus tau cov kev cuam tshuam sab nraud vibration. Thaum kev ua haujlwm ntawm cov cuab yeej tshuab thiab kev txav mus los ntawm cov tsheb hauv lub chaw ua haujlwm tsim kev co, lub hauv paus hlau cam khwb cia yuav xa cov kev co mus rau cov khoom siv ntsuas, ua rau muaj kev hloov pauv hauv cov ntaub ntawv ntsuas thiab ua rau nws nyuaj rau ua kom tau raws li qhov yuav tsum tau ntsuas siab ntawm nanometer thiab micrometer.
Cov yam ntxwv ntawm cov granite damping hauv paus: Lub hauv paus lav rau kev ntsuas kom meej
Granite yog ib lub pob zeb ntuj tsim los ntawm cov txheej txheem geological ntau pua lab xyoo. Nws cov pob zeb hauv av sab hauv yog compact thiab nws cov qauv yog ntom thiab sib xws, muab nws nrog cov khoom zoo heev nano-scale damping. Thaum cov kev co sab nraud raug xa mus rau lub hauv paus granite, nws cov qauv sab hauv tuaj yeem hloov lub zog co mus rau hauv lub zog thermal sai sai, ua tiav kev txo qis zoo. Piv nrog cov hlau cam khwb cia, lub sijhawm teb vibration ntawm cov hauv paus granite luv dua ntau dua 80%, thiab lawv tuaj yeem rov qab mus rau lub xeev ruaj khov hauv lub sijhawm luv luv heev, zoo zam kev cuam tshuam ntawm kev co rau qhov tseeb ntawm kev ntsuas ntawm cov khoom siv ntsuas.
Los ntawm lub zeem muag me me, cov qauv siv lead ua ntawm granite muaj ntau cov ciam teb me me thiab cov khoom me me, thiab cov yam ntxwv ntawm cov qauv no tsim ib qho "kev nqus kev co" ntuj. Thaum cov nthwv dej vibration kis mus rau hauv granite, lawv yuav sib tsoo, cuam tshuam thiab tawg nrog cov ciam teb thiab cov khoom me me no ntau zaus. Lub zog vibration raug siv tas li hauv cov txheej txheem no, yog li ua tiav cov txiaj ntsig ntawm kev co damping. Cov kev tshawb fawb qhia tau hais tias lub hauv paus granite tuaj yeem txo qhov amplitude vibration kom tsawg dua ib feem kaum ntawm thawj, muab ib puag ncig ntsuas ruaj khov rau cov khoom siv ntsuas.
Lwm yam zoo ntawm cov granite bases: Ua tau raws li qhov xav tau siab kawg
Ntxiv rau nws cov khoom siv nanoscale damping zoo tshaj plaws, lub hauv paus granite kuj muaj ntau yam zoo, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov khoom siv ntsuas siab. Nws cov coefficient ntawm thermal expansion yog qis heev, tsuas yog 5-7 × 10⁻⁶ / ℃, thiab nws yuav luag tsis cuam tshuam los ntawm kev hloov pauv kub. Nws tuaj yeem tswj tau qhov loj me thiab cov duab ruaj khov nyob rau hauv ntau yam ib puag ncig, ua kom ntseeg tau qhov tseeb ntawm qhov ntsuas siv. Lub caij no, granite muaj qhov nyuaj siab (nrog Mohs hardness ntawm 6-7) thiab muaj zog hnav tsis kam. Txawm tias tom qab siv ntev, nws qhov chaw tseem tuaj yeem tswj tau lub xeev siab-precision planar, txo qhov zaus ntawm kev saib xyuas khoom siv thiab calibration. Tsis tas li ntawd, granite muaj cov khoom siv tshuaj ruaj khov thiab tsis yooj yim corroded los ntawm acidic lossis alkaline tshuaj, ua rau nws haum rau ntau yam kev lag luam nyuaj.
Kev coj ua hauv kev lag luam tau ua pov thawj tias tus nqi ntawm cov pob zeb granite tseem ceeb heev
Hauv kev tsim khoom siv semiconductor, qhov loj ntawm cov chips tau nkag mus rau lub sijhawm nanoscale, thiab qhov yuav tsum tau ua kom raug rau cov khoom siv metrology yog siab heev. Tom qab lub tuam txhab semiconductor thoob ntiaj teb paub zoo hloov cov khoom siv metering nrog lub hauv paus hlau cam khwb cia nrog lub hauv paus granite, qhov yuam kev ntsuas tau txo qis los ntawm ± 5μm mus rau ± 0.5μm, thiab cov khoom tsim tau nce 12%. Hauv kev lag luam aerospace, cov khoom siv metrology siab siv rau kev ntes cov duab thiab qhov chaw kam rau ntawm cov khoom, tom qab siv cov hauv paus granite, zoo zam kev cuam tshuam kev co, ua kom ntseeg tau tias qhov tseeb ntawm cov khoom tseem ceeb xws li cov hniav dav hlau thiab cov thav duab fuselage, thiab muab kev lav zoo rau kev nyab xeeb thiab kev ntseeg siab ntawm cov khoom siv aerospace.
Nrog rau kev txhim kho tas mus li ntawm cov kev cai rau kev ntsuas qhov tseeb hauv kev lag luam tsim khoom siab, cov hauv paus granite, nrog lawv cov yam ntxwv nano-scale damping thiab cov txiaj ntsig kev ua tau zoo, tab tom hloov kho cov qauv kev ntsuas ntawm cov khoom siv ntsuas. Kev hloov pauv ntawm cov hlau cam khwb cia mus rau granite tsis yog tsuas yog kev hloov kho tshiab ntawm cov ntaub ntawv; nws tseem yog kev hloov pauv hauv kev lag luam uas txhawb nqa cov thev naus laus zis ntsuas qhov tseeb mus rau qhov siab tshiab.
Lub sijhawm tshaj tawm: Tsib Hlis-13-2025