Granite vs. Marble hauv Cov Cuab Yeej Siv Tau Zoo: Vim Li Cas Qhov Ceev thiab Kev Ruaj Ntseg Tseem Ceeb

Taug kev mus rau hauv yuav luag txhua lub chaw kuaj ntsuas metrology, chav CMM, lossis lub Hoobkas semiconductor, thiab koj yuav pom ib daim pob zeb tsaus nti nyob hauv qab cov khoom siv. Rau lub qhov muag tsis tau kawm, granite thiab marble zoo li sib pauv tau - ob qho tib si yog pob zeb quarried, ob qho tib si tuaj yeem polished rau daim iav tiav, ob qho tib si zoo li "khoom." Hauv kev tsim khoom precision, qhov kev zoo sib xws ntawd xaus rau lub sijhawm koj pib ntsuas ntawm qib micron.

Qhov Ceev Tsis Yog Ib Qho Kev Qhia Txog Kev Zoo Nkauj

Marble yog pob zeb metamorphic uas tsim los ntawm recrystallized calcite lossis dolomite. Nws cov qauv siv lead ua yog mos thiab porous piv rau igneous granite, uas tsim los ntawm magma txias qeeb thiab yog dominated los ntawm cov zaub mov tawv xws li quartz thiab feldspar. Qhov sib txawv ntawm cov qauv qhia ncaj qha hauv qhov ceev: granite dub siv rau cov hauv paus precision feem ntau khiav ib ncig ntawm 3,000–3,100 kg / m³, pom tseeb denser dua li feem ntau marbles lag luam.

Qhov ceev tseem ceeb vim nws muaj feem cuam tshuam nrog kev ruaj khov sab hauv thiab kev tiv thaiv kev nkag mus - qhov qeeb, kev hloov pauv tas mus li uas cov khoom siv raug cuam tshuam los ntawm kev thauj khoom lossis nws qhov hnyav. Lub phaj granite nto txhawb nqa alub tshuab ntsuas kev sib koom tes(CMM) lossis lub tshuab tshuaj xyuas qhov muag yuav tsum tuav nws qhov tiaj tiaj rau ntau xyoo, tsis yog ntau lub hlis. Cov khoom siv uas muaj qhov ceev tsawg dua thiab cov qauv sab hauv uas muaj qhov ntau dua yuav muaj qhov hloov pauv maj mam, nqus dej noo, thiab tawg me me hauv qab kev hloov pauv thermal.

Vim li cas qee tus neeg muag khoom hloov Marble li cas los xij

Marble pheej yig dua rau kev khawb thiab tshuab, thiab cov pob zeb tiav lawm yuav nyuaj rau pom qhov txawv ntawm granite thaum polished thiab dyed dub. Hauv kev ua lag luam uas cov neeg yuav khoom feem ntau tsis tuaj yeem sim qhov ceev lossis kev ruaj khov mus sij hawm ntev ua ntej yuav, qhov no ua rau muaj chaw rau kev sau ntawv tsis raug - muag cov khoom siv marble ua "granite" hauv paus. Qhov tshwm sim tiag tiag tsis yog cosmetic; nws yog ib qho kev ntsuas uas maj mam poob qhov calibration, feem ntau tsis muaj qhov laj thawj pom tseeb kom txog thaum rov ua qhov kev ntsuas pib poob qis.

Yuav Tsum Tshawb Xyuas Dab Tsi Ua Ntej Yuav Khoom

Rau cov engineers uas teev cov granite bases, ob peb qhov kev kuaj xyuas yuav pab cais cov granite precision tiag tiag los ntawm cov khoom siv qib qis dua:

• Nug cov lej ceev, zoo dua yog tias muaj ib lub chaw kuaj mob sab nraud lees paub dua li tsuas yog daim ntawv thov cov ntaub ntawv xwb.
• Thov kom muaj kev taug qab qhov ntsuas tau - cov phaj nto yuav tsum xa nrog daim ntawv pov thawj tiaj tiaj uas taug qab tau mus rau lub koom haum ntsuas hauv tebchaws.
• Tshawb xyuas cov qauv ntawm cov noob hauv qab kev tsom iav loj; cov granite igneous tiag tiag qhia txog cov qauv siv lead ua sib xyaw ua ke, thaum cov qauv siv lead ua ntawm marble zoo dua thiab sib xws dua.
• Tshawb xyuas cov ntaub ntawv nthuav dav thermal, vim tias granite qhov coefficient qis thiab ruaj khov ntawm thermal expansion yog ib qho ntawm cov laj thawj tseem ceeb uas nws nyiam rau cov khoom siv kub-sensitive xws li CMMs thiab optical benches.

Raws li kev tsim khoom raug thawb mus rau qhov kev kam rau siab dua - nanometer-level flatness ntawm cov phaj nto tam sim no ua tau - kev xaiv cov khoom siv raw tsis yog qhov me me thiab dhau los ua qhov txiav txim siab ntev npaum li cas ib lub cuab yeej tseem raug. Cov tuam txhab zoo li ZHHIMG, uas tsim cov khoom granite thiab cov cuab yeej ntsuas ntawm qhov ntsuas, kho qhov kev txheeb xyuas qhov ceev raws li ib feem ntawm kev tswj hwm zoo vim tias qhov sib txawv ntawm lub hauv paus ruaj khov thiab qeeb qeeb feem ntau tsis pom kom txog thaum nws lig dhau lawm.