Thaum tsim lub platform uas muaj zog thiab ruaj khov, qhov kev xaiv ntawm lub hauv paus ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm lub platform. Lub hauv paus granite thiab lub hauv paus hlau cam khwb muaj lawv tus kheej cov yam ntxwv, thiab muaj qhov sib txawv ntawm qhov tseem ceeb xws li kev ruaj khov, kev saib xyuas qhov tseeb, kev ruaj khov thiab tus nqi.
Ua ntej, kev ruaj khov: ntuj tsim thiab cov qauv hlau
Tom qab ntau lab xyoo ntawm kev hloov pauv geological, granite tau sib xyaw ua ke los ntawm quartz, feldspar thiab lwm yam minerals los tsim cov qauv ntom ntom thiab sib xws. Thaum muaj kev cuam tshuam sab nraud, xws li kev co muaj zog los ntawm kev ua haujlwm ntawm cov khoom siv loj hauv lub Hoobkas ua haujlwm, lub hauv paus granite tuaj yeem thaiv thiab ua kom tsis txhob muaj zog los ntawm kev cia siab rau nws cov qauv siv lead ua ke, uas tuaj yeem txo qhov kev co ntawm lub platform siab zoo li qub los ntawm ntau dua 80%, muab lub hauv paus ruaj khov rau lub platform kom ntseeg tau tias muaj kev txav mus los zoo thaum lub sijhawm ua tiav lossis nrhiav pom tseeb. Piv txwv li, hauv cov txheej txheem photolithography ntawm kev tsim khoom siv hluav taws xob, qhov kev piav qhia meej ntawm cov qauv nti tau lees paub.
Lub hauv paus hlau cam khwb cia yog cam khwb cia los ntawm hlau-carbon alloy, thiab sab hauv graphite yog faib ua daim ntawv lossis spheres. Txawm hais tias nws muaj qee qhov kev co damping peev xwm, nws cov qauv uniformity tsis zoo piv rau granite. Thaum cuam tshuam nrog lub zog siab thiab kev co tas mus li, nws nyuaj rau lub hauv paus hlau cam khwb cia kom txo qhov kev cuam tshuam kev co mus rau tib qib qis li lub hauv paus granite, uas yuav ua rau muaj kev hloov pauv me me hauv kev txav mus los ntawm precision static pressure air floating platform, cuam tshuam rau kev ua haujlwm precision ntawm lub platform hauv kev ua haujlwm ultra-precision.
Qhov thib ob, qhov tseeb khaws cia: qhov zoo ntawm qhov nthuav dav tsawg thiab qhov kev sib tw ntawm kev hloov pauv thermal hlau
Granite paub txog nws cov coefficient qis heev ntawm thermal expansion, feem ntau ntawm 5-7 × 10⁻⁶ / ℃. Hauv qhov kub thiab txias hloov pauv, qhov loj ntawm granite precision base hloov me ntsis. Hauv thaj chaw ntawm astronomy, lub precision hydrostatic air float platform rau kev kho kom zoo ntawm lub lens telescope yog paired nrog lub granite base, txawm tias qhov sib txawv ntawm qhov kub thiab txias ntawm hnub thiab hmo ntuj yog qhov tseem ceeb, nws tuaj yeem ua kom ntseeg tau tias qhov tseeb ntawm lub lens yog khaws cia ntawm qib submicron, pab cov kws tshawb fawb txog hnub qub kom ntes tau cov dynamics me me ntawm cov cev ntuj ceeb tsheej nyob deb.
Tus coefficient ntawm thermal expansion ntawm cov hlau cam khwb cia yog qhov siab heev, feem ntau yog 10-20 × 10⁻⁶ / ℃. Thaum qhov kub hloov pauv, qhov loj ntawm cov hlau cam khwb cia puag hloov pauv pom tseeb, uas yooj yim ua rau thermal deformation ntawm qhov tseeb static siab cua ntab platform, ua rau qhov kev txav mus los ntawm qhov tseeb ntawm lub platform poob qis. Hauv cov txheej txheem sib tsoo ntawm cov iav kho qhov muag uas rhiab heev rau qhov kub, qhov deformation ntawm cov hlau cam khwb cia puag nyob rau hauv qhov cuam tshuam ntawm qhov kub yuav ua rau qhov sib txawv ntawm qhov kev sib tsoo precision ntawm lub lens dhau qhov ntau yam tso cai thiab cuam tshuam rau qhov zoo ntawm lub lens.
Qhov thib peb, kev ruaj khov: kev nyuaj siab ntawm cov pob zeb ntuj thiab cov hlau qaug zog
Granite qhov nyuaj siab heev, Mohs hardness tuaj yeem ncav cuag 6-7, zoo hnav tsis kam. Hauv cov khoom siv science laboratory, lub platform uas siv ntau zaus precision static pressure air float, nws lub hauv paus granite tuaj yeem tiv taus kev sib txhuam mus sij hawm ntev, piv rau lub hauv paus ib txwm, tuaj yeem ntev lub voj voog txij nkawm ntawm lub platform ntau dua 50%, txo cov nqi txij nkawm khoom siv, thiab xyuas kom meej tias kev ua haujlwm tshawb fawb txuas ntxiv mus. Txawm li cas los xij, cov khoom siv granite yog qhov tsis ruaj khov, thiab muaj kev pheej hmoo ntawm kev tawg thaum nws raug cuam tshuam tsis raug.
Lub hauv paus hlau cam khwb cia muaj qee yam kev tawv thiab tsis yooj yim tawg thaum muaj qee lub zog cuam tshuam. Txawm li cas los xij, thaum lub sijhawm ntev ntawm kev txav mus los ntawm lub platform siab zaus siab, cov hlau cam khwb cia yuav raug kev puas tsuaj los ntawm kev qaug zog, ua rau muaj kev hloov pauv hauv cov qauv sab hauv, cuam tshuam rau kev txav mus los thiab kev ruaj khov ntawm lub platform. Tib lub sijhawm, cov hlau cam khwb cia yuav raug xeb thiab xeb hauv cov chaw noo noo, txo nws lub zog, sib piv, granite hauv kev tiv thaiv corrosion zoo dua.
Qhov thib plaub, tus nqi tsim khoom thiab kev ua haujlwm nyuaj: kev khawb pob zeb ntuj thiab kev ua cov teeb meem thiab cov txheej txheem casting hlau
Kev khawb av thiab kev thauj mus los ntawm cov khoom siv granite yog qhov nyuaj heev, thiab kev ua cov khoom siv thiab thev naus laus zis siab heev. Vim nws qhov nyuaj siab, brittleness, txiav, sib tsoo, polishing thiab lwm yam txheej txheem yog qhov yooj yim tawg, tawg, thiab cov khoom seem ntau, ua rau cov nqi tsim khoom siab.
Lub hauv paus hlau cam khwb cia yog tsim los ntawm cov txheej txheem casting laus, ntau qhov chaw ntawm cov khoom siv raw thiab tus nqi qis. Los ntawm cov pwm tuaj yeem ua tiav ntau lawm, ua haujlwm tau zoo. Txawm li cas los xij, txhawm rau kom ua tiav qhov tseeb siab thiab ruaj khov zoo li lub hauv paus granite, cov txheej txheem casting thiab cov kev cai tom qab ua tiav yog nruj heev, xav tau kev ua haujlwm raug thiab kev kho laus, thiab lwm yam, thiab tus nqi kuj tseem yuav nce siab heev.
Hauv kev xaus, granite precision base muaj qhov zoo tseem ceeb hauv cov ntawv thov scenarios ntawm precision static pressure air float platform uas xav tau high precision, stability thiab hnav tsis kam; Lub hauv paus hlau cam khwb cia muaj qee qhov zoo hauv tus nqi thiab toughness, thiab yog tsim rau cov sijhawm uas qhov tseeb xav tau qis, kev nrhiav kev siv nyiaj zoo thiab kev co thiab qhov kub thiab txias ib puag ncig yog qhov ruaj khov.
Lub sijhawm tshaj tawm: Plaub Hlis-09-2025