I. Cov Txheej Txheem Tsim Khoom ntawm Granite Straightedge
Kev tshuaj xyuas thiab txiav cov khoom siv raw
Cov txheej txheem xaiv cov khoom siv: Yuav tsum xaiv cov granite zoo nrog qhov ceev ntawm ≥2.7g / cm³ thiab qhov nqus dej ntawm <0.1% (xws li "Jinan Green" los ntawm Shandong thiab "Black Gold Sand" los ntawm Is Nrias teb). Cov khoom me me ntawm cov pob zeb yuav tsum sib xws (quartz particles ≤2mm), tsis muaj kab nrib pleb thiab qhov hws, thiab cov pob zeb zais tsis zoo yuav tsum raug tshem tawm los ntawm kev kuaj pom qhov tsis zoo ntawm X-ray.
Kev txiav tsis zoo: Siv lub tshuab txiav pob zeb diamond los txiav qhov seem kom loj dua 5-10 hli ntawm qhov loj ntawm cov khoom tiav. Qhov yuam kev ntawm qhov tiaj tiaj ntawm qhov chaw txiav yuav tsum tswj tau hauv ± 0.5 hli.
2. Kev kho mob laus
Kev laus ntuj: Muab lub cev ntsuab tso rau hauv huab cua qhib rau 6 txog 12 lub hlis. Los ntawm qhov sib txawv ntawm qhov kub thiab txias ntawm hnub thiab hmo ntuj thiab kev hloov pauv ntawm cov av noo, ntau tshaj 90% ntawm kev ntxhov siab sab hauv raug tso tawm los tiv thaiv kev hloov pauv hauv theem tom qab.
Kev laus dag (xaiv tau): Qee cov chaw tsim khoom siv lub cub tawg kub tas li (100-150 ℃) rau 24 teev kom ua kom nrawm dua kev tso tawm kev ntxhov siab, uas yog qhov tsim nyog rau kev txiav txim sai, tab sis cov nyhuv qis dua li ntawm kev laus ntuj.
3. Kev sib tsoo ntxhib thiab kev ua cov khoom siv saum npoo
Kev sib tsoo thiab ua kom zoo nkauj: Siv lub log sib tsoo pob zeb diamond 200-400 mesh los sib tsoo cov khoom seem, tshem cov kab txiav, kho qhov tiaj tiaj ntawm ± 0.5 hli txog ± 0.1 hli / m (100μm / m), thiab txiav txim siab qhov chaw siv.
Kev kho qhov chaw tsis ua haujlwm: Txiav lossis pleev xim rau sab thiab hauv qab (xws li txau xim tiv thaiv xeb) kom tiv thaiv kev tawg ntawm ntug thiab kev nqus dej noo.
4. Kev sib tsoo precision (txheej txheem tseem ceeb)
Qhov kev dhia ceev yog ua tiav los ntawm kev sib tsoo hierarchical, uas muab faib ua peb theem:
Kev sib tsoo tsis zoo: Siv 400-800 mesh abrasives (silicon carbide lossis diamond micro-hmoov) ua ke nrog lub platform sib tsoo granite kom kho qhov tiaj tiaj rau ± 10μm / m, thiab qhov roughness ntawm qhov chaw Ra≤0.8μm.
Kev sib tsoo kom raug: Los ntawm kev hloov mus rau 1200-2000 mesh abrasives thiab sib xyaw nrog qib hluav taws xob (qhov tseeb ± 1μm / m) rau kev saib xyuas lub sijhawm tiag tiag, qhov tiaj tiaj tau txhim kho mus rau ± 3μm / m, thiab qhov roughness ntawm qhov chaw Ra yog ≤0.4μm.
Kev sib tsoo zoo heev (qhov tseem ceeb rau cov khoom lag luam siab): Los ntawm kev siv W10-W5 qib micro-hmoov (qhov loj me 5-10μm) thiab cov kua txhuam tshuaj, los ntawm kev ua ob zaug ntawm "kev sib tsoo tshuab + kev xeb tshuaj", qhov kawg tiaj tiaj tuaj yeem ncav cuag ± 1μm / m, thiab qhov roughness ntawm qhov chaw Ra≤0.2μm.
5. Kev kuaj pom thiab kho kom raug
Cov khoom siv nrhiav: Lub laser interferometer (qhov tseeb ± 0.1μm) thiab qib hluav taws xob (kev daws teeb meem 0.001mm / m) yog siv los ua qhov kev tshawb pom tag nrho ntawm qhov tiaj tus thiab ncaj, thiab kos daim ntawv qhia kev faib tawm qhov yuam kev.
Kev kho qhov kaw-voj voog: Raws li cov ntaub ntawv kuaj pom, kev sib tsoo ntxiv hauv zos yog ua tiav rau thaj chaw muaj qhov yuam kev siab los ntawm lub tshuab sib tsoo CNC kom txog thaum qhov yuam kev loj tag nrho raug tswj hwm hauv qhov ntau ntawm lub hom phiaj.
6. Kev tiv thaiv nto thiab ntim khoom
Kev tiv thaiv kev kho mob: Tshuaj tsuag ib txheej nano-scale silica (tuab 5-10μm) rau ntawm qhov chaw siv, thiab siv ib txheej tshuaj tiv thaiv xeb rau ntawm qhov chaw tsis ua haujlwm kom tiv thaiv kev nqus dej lossis oxidation thaum siv ntev.
Kev ntim khoom kom raug: Nws tau ntim rau hauv cov thawv ntoo uas tsis yooj yim poob nrog cov tshuaj desiccants. Thaum lub sijhawm thauj mus los, qhov sib txawv ntawm qhov kub thiab txias raug tswj tsis pub dhau ± 5 ℃ kom tsis txhob muaj qhov tsis raug los ntawm kev co.
II. Qib Siab Tshaj Plaws thiab Cov Qauv Kev Lag Luam
Qhov tseeb ntawm granite straightedge yog raws li qhov yuam kev flatness ua tus core index. Raws li lub teb chaws tus qauv (GB / T 4977-2018) thiab tus qauv thoob ntiaj teb (ISO 2768-2), nws cov qib tseeb thiab cov kev cai sib xws yog raws li nram no:
Cov chaw soj nstuam saum toj kawg nkaus tuaj yeem ua tiav qhov tseeb tshaj plaws:
Los ntawm cov txheej txheem sib tsoo nano-scale (xws li magneorheological polishing thiab ion beam modification), qhov tiaj tiaj ntawm qee cov khoom lag luam siab tuaj yeem tawg mus txog ± 0.5μm / m (piv txwv li, qhov yuam kev ib 'meter' ntev tsis tshaj 0.5 micrometers), mus txog qhov siv optical-grade dav hlau. Lawv feem ntau yog siv rau hauv cov xwm txheej meej heev xws li aerospace thiab metrology institutes.
III. Kev Sib Piv ntawm Cov Yam Uas Cuam Tshuam Rau Qhov Tseeb
Kev xaus lus: Qhov kev ua tau zoo ntawm granite straightedge vam khom kev tswj hwm tag nrho ntawm "cov khoom siv raw zoo + kev laus ntev heev + kev sib tsoo qib + ib puag ncig hnyav", ntawm cov txheej txheem sib tsoo yog lub hauv paus rau kev tawg ua qhov tseeb. Nrog rau kev txhim kho ntawm nanofabrication thev naus laus zis, nws qhov kev ua tau zoo maj mam nce mus rau qib sub-micron thiab tau dhau los ua cov cuab yeej ntsuas tsis tau hauv kev tsim khoom siab.
Lub sijhawm tshaj tawm: Tsib Hlis-19-2025