Saib iav saib iav

LOOKING GLASS: Pob tshab lo ntsiab muag nyob rau saum npoo ntawm lub moos, tseem hu ua iav saib, siv los tiv thaiv qhov chaw (dial) ntawm lub moos. Cov iav tsom iav tuaj yeem muab faib ua peb pawg raws li cov khoom siv: hluavtaws iav saib iav, cov iav siv lead ua iav saib iav, thiab sapphire siv lead ua iav saib iav. Cov iav iav hluavtaws kuj tiv taus qhov poob, thaum iav sapphire yog qhov hnav-tiv taus tshaj plaws.
Material Science
1. Sapphire siv lead ua iav saib daim iav
Sapphire yog ib hom pob zeb diamond ntuj uas muaj kev hnav tsis kam thiab corrosion kuj thaum sib xyaw nrog alumina. Lub hardness ranges ntawm 2200 mus rau 2300 degrees Fahrenheit (xya lub sij hawm hardness ntawm hlau), nrog ib tug Mohs hardness ntawm 9. Nws hardness yog thib ob rau pob zeb diamond, nrog siab hardness, zoo lub teeb kis tau tus mob, tsis tshua muaj kev sib txhuam, kub tsis kam, thiab hnav. tsis kam. Nws tuaj yeem daws cov teeb meem xws li khawb, kev laus, thiab kev xeb, tab sis nws tsis yooj yim. Feem ntau siv los ua daim iav saib thiab pom hauv qab npog. (feem ntau yog siv rau high-end watches.)
Cov sapphire puas tuaj yeem ua rau hauv av lossis iav zoo tib yam? Tsis yog, vim tej zaum yuav muaj pob zeb diamond lossis pob zeb diamond hmoov thiab cov khib nyiab rau hauv av lossis hauv iav zoo tib yam. Yog kov, nws yuav khawb lub sapphire siv lead ua; Lwm qhov xwm txheej yog thaum cov khoom siv softer dua li sapphire siv lead ua adheres rau nws, ua rau sapphire siv lead ua raug khawb. Qhov no yog ib qho illusion ntawm lub paj tawg uas tuaj yeem polished thiab rov qab los ntawm tus tswv.
Yog xav paub ntxiv txog sapphire siv lead ua iav saib iav, thov nyem rau ntawm: http://baike.xbiao.com/69.html
2. Synthetic iav saib daim iav
Synthetic iav, feem ntau hu ua acrylic, tseem hu ua organic iav, yog ib hom ntawm cov iav tsom iav nrog cov ntaub ntawv softer thiab ntau dua plasticity. Yav dhau los, watches feem ntau siv cov khoom siv no, tab sis tam sim no tseem muaj ntau cov qauv saib siv.
Qhov tsis zoo ntawm cov khoom siv no yog tias nws yooj yim rau khawb thiab muaj qhov pom tsis zoo me ntsis. Txawm hais tias nws yooj yim los khawb, thaum khawb tshwm rau ntawm nws, tib neeg tuaj yeem nug tus neeg saib xyuas kom ncaj qha polish lub iav kom rov qab nws daim iav qub, yog li tsis tas yuav hloov lub lens. Yog tias qhov khawb tob dhau, koj tuaj yeem xaiv los hloov daim iav ncaj qha, vim cov iav acrylic yog pheej yig heev. Qhov zoo dua yog tias nws muaj elasticity zoo heev thiab tsis yooj yim tawg, yog li nws tseem hu ua iav kev nyab xeeb. Organic iav muaj lub zog muaj zog, nrog tensile thiab cuam tshuam tsis kam 7 mus rau 18 npaug siab dua li iav zoo tib yam. Muaj ib hom iav organic uas tau txais kev kho cua sov tshwj xeeb thiab ncab. Cov ntsia hlau yog siv los tsav rau hauv cov iav organic no, thiab txawm tias cov ntsia hlau nkag mus, tsis muaj qhov tawg ntawm cov iav organic. Vim yog cov yam ntxwv no, nws tau siv dav hauv cov tshuab ua tub rog, xws li cockpit npog ntawm lub dav hlau, windshields ntawm armored tsheb, thiab ntau lub hnab ris thaum ntxov.
Yog xav paub ntxiv txog cov iav hluavtaws, thov nyem rau ntawm: http://baike.xbiao.com/47.html
3. Mineral siv lead ua iav saib daim iav
Mineral siv lead ua iav saib lo ntsiab muag yog ib hom ntawm cov khoom siv tsom iav uas feem ntau yog polished thiab tom qab ntawd tawv, tab sis lawv cov tawv tawv tseem qis dua li cov iav siv lead ua sapphire. Mineral siv lead ua iav, tseem hu ua dag siv lead ua, tau yug los vim qhov tsis txaus thiab nyuaj hauv kev mining ntawm ntuj siv lead ua, uas tsis tuaj yeem ua tau raws li cov neeg xav tau. Vim nws qhov siab pob tshab, nws tuaj yeem ua rau ntau yam khoom siv tes ua thiab tau txais kev nyiam los ntawm lub ntiaj teb. Mineral siv lead ua iav yog tsim los ntawm boiling thiab dissolving silicon thiab lead oxide (tom ntej no lead-free crystals siv lwm yam ntaub ntawv xws li potassium oxide thiab barium oxide), ua rau cov siv lead ua tshwj xeeb yog ci iab. Lub clarity yog los ntawm polishing tshuab thiab zoo.
Yog xav paub ntxiv txog cov pob zeb siv lead ua iav saib iav, thov nyem rau ntawm: http://baike.xbiao.com/64.html
4. Dab tsi yog qhov feem ntau hnov ​​​​cov iav iav qhov muag?
Cias muab tso, anti glare daim iav nto yog hais txog electroplating ntau txheej ntawm zaj duab xis rau lub lens kom tiv thaiv lub teeb refraction. Zoo ib yam li daim ntawv rwb thaiv tsev tsheb, tseem hu ua ntau txheej zaj duab xis lossis cov khaub ncaws xim, nws feem ntau yog siv rau kev ua haujlwm aviation, dhia dej saib, lossis saib nrog daim iav loj curvature. Thiab nws tseem tuaj yeem muab faib ua ob txheej los tiv thaiv glare iav thiab ib txheej los tiv thaiv glare iav. Qhov txawv yog tias yav dhau los yog electroplated ntawm ob sab hauv thiab sab nrauv ntawm lub lens, thaum lub tom kawg tsuas yog coated rau sab hauv ntawm lub iav, thiab qhov sib txawv ntawm ob qhov tsis tseem ceeb.
Qhov sib txawv ntawm cov iav siv lead ua iav saib iav, iav hluavtaws, thiab sapphire siv lead ua iav saib iav
Cov tsos ntawm pob zeb siv lead ua iav saib iav, iav hluavtaws, thiab sapphire siv lead ua iav saib iav yog qhov zoo sib xws, tab sis lawv yog peb yam sib txawv kiag li. Lub ntsiab sib txawv yog raws li nram no:
1. Cov ntaub ntawv sib txawv: Cov iav siv lead ua iav yog cov muaju ntawm silicon dioxide, cov iav hluavtaws tsuas yog cov khoom sib xyaw uas muaj silicon dioxide, thiab sapphire siv lead ua iav iav yog txhuas oxide uas tshem tawm impurities xws li hlau oxide thiab titanium oxide.
2. Nqe sib txawv: Sapphire siv lead ua iav muaj tus nqi siab tshaj plaws, ua raws li cov iav siv lead ua iav, thiab qhov pheej yig tshaj yog hluavtaws iav saib lo ntsiab muag.
3. Hardness txawv: Sapphire siv lead ua iav tsom iav muaj qhov nyuaj tshaj plaws (Mohs qib 9), thaum cov iav siv lead ua iav yog crystalline thiab kuj muaj qhov hardness siab (Mohs qib 7). Synthetic iav muaj qhov hardness qis dua (Mohs 5.5).
4. Cov txheej txheem kev ua haujlwm sib txawv: cov iav hluavtaws tuaj yeem ua rau kub cam, txuag cov ntaub ntawv thiab kev ua haujlwm, thiab muaj cov nqi qis. Mineral siv lead ua iav thiab pob zeb siv lead ua iav yog cov crystalline lub cev uas tsis tuaj yeem thim rov qab tom qab cua sov thiab yaj. Yog li ntawd, kub casting tsis tuaj yeem siv, thiab kev ua haujlwm txias xws li txiav thiab sib tsoo tsuas yog siv tau. Lub sapphire siv lead ua iav saib daim iav yog ua los ntawm cov hmoov siv lead ua kom sov siab tshaj 2000 degree C. Tom qab ntawd, cov sapphire thaiv yog txiav rau hauv cov khoom zoo nkauj nrog cov khoom siv siab heev, thiab tom qab ntawd txiav thiab polished los ua cov iav saib.
Peb hom iav tsom iav no tuaj yeem txheeb xyuas tau li cas?
Ua ntej, koj tuaj yeem coj koj tus ntiv tes rau ntawm daim iav saum npoo thiab ua tib zoo mloog lub suab. Daim iav acrylic nto yuav ua suab zoo li yas, thaum lub suab ntawm iav yog tuab. Thib ob, los ntawm qhov kev xav ntawm qhov hnyav, daim iav acrylic yog qhov sib zog tshaj plaws thiab daim iav sapphire yog qhov hnyav tshaj plaws. Vim yog qhov zoo heev thermal conductivity ntawm sapphire, thaum koj kov nws nrog koj txhais tes, nws yuav ua rau koj txias. Vim qhov tseeb tias daim iav saum npoo ntawm sapphire yog smoother dua li ntawm ob cov ntaub ntawv, yog tias koj tso dej rau ntawm daim iav sapphire, nws yuav tsis kis tau yooj yim, thaum lwm cov ntaub ntawv yuav tawg mus rau hauv ib daim.