Borosilicate iav: yam ntxwv, ntau lawm thiab daim ntawv thov

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Muab cov khoom siv ib txwm muaj cov yam ntxwv tshwj xeeb tau ua ntev ntev. Cov khoom uas muaj kev txhim kho cov khoom ntawm kev tiv thaiv tshuaj lom neeg, muaj zog tiv thaiv thiab hardness yog siv nyob rau hauv lub zog, mechanical engineering, tsim cov khoom siv hauv tsev thiab lwm qhov chaw. Nyob rau tib lub sijhawm, qhov chaw nqaim ntawm daim ntawv thov ntawm cov khoom siv hluav taws kub-resistant tib yam tsis tau tso tseg yam tsis muaj kev saib xyuas. Yog li, hauv tshuaj, borosilicate iav yog dav siv, cov tais diav uas yooj yim siv thiab muaj ntau yam kev tiv thaiv.

iav composition

Qhov kev ua haujlwm thiab lub cev zoo ntawm cov ntaub ntawv yog txiav txim siab los ntawm ob yam - cov txheej txheem ua haujlwm hauv cov txheej txheem tsim khoom thiab cov khoom ntawm lub hauv paus ntsiab lus. Los ntawm thiab loj, lub khob no yog ib tug neeg sawv cev ntawm ib pawg ntawm cov pa silicate cov ntaub ntawv, uas yog raws li oxides. Qhov no yog cov npe tseem ceeb ntawm cov khoom, suav nrog sodium carbonate, quartz xuab zeb thiab calcium oxide, uas yog, limestone. Nyob rau tib lub sijhawm, borosilicate iav yog qhov txawv los ntawm qhov muaj nyob hauv cov ntsiab lus ntawm ib qho ntxiv, uas feem ntau txiav txim siab qhov tsis zoo ntawm cov qauv. Boron oxide yog ntxiv rau qhov dav silicate muaj pes tsawg leeg, uas ua kom cov iav tsis kamkub hloov pauv. Tau kawg, cov iav tsom iav niaj hnub no tsis txwv rau qhov no, txij li cov kws tshaj lij hloov kho cov ntsiab lus, tsom mus rau cov kev xav tau tshwj xeeb rau cov khoom kawg.

iav technology

Feem ntau, cov txheej txheem tsim khoom ntawm cov khoom siv borosilicate zoo ib yam li cov cuab yeej tsim khoom ntawm cov iav siv. Nyob rau hauv tus txheej txheem ntawm kev ua noj lub ntsiab yaj, cov chav nyob rau hauv qhov cub nrog kub ntawm ntau tshaj 1300ºC yog siv. Cov kua loj yog molded ntawm cov hlau tshwj xeeb. Raws li cov txheej txheem ntab, daim ntawv borosilicate iav yog tsim nrog qhov ntev. Qhov peculiarity ntawm txoj kev no yog tias cov nplooj ntawv tshwm sim tsis raug txiav thiab tsis kho txhua, tab sis siv rau hauv daim ntawv tiav los ntawm tus neeg siv kawg.

Los ntawm cov iav zoo li no, ob chav glazed qhov rais, qhov rooj, thiab qee zaum, cov khoom siv hluav taws xob tiv thaiv tau txuas ntxiv. Feem ntau ntawm cov kev lag luam koom nrog hauv kev tsim cov iav zoo li no yog tsom rau kev tsim cov tais diav tiav. Cov no tuaj yeem yog cov hlab ntsha, cov hlab ntsha, lub tais thiab lwm yam khoom siv hauv cov tshuaj thiab kev txhawb nqa ntawm cov chaw tshawb fawb. Ntawm cov cuab yeej tshwj xeeb, kev txiav thiab polishing ntawm ingots yog ua, los ntawm qhov chaw kuaj iav hauv ntau hom tom qab tau txais. Qhov tseeb, qhov sib txawv tseem ceeb ntawm kev tsim cov khoom siv no thiab cov pa roj silicate analogues yog lub koom haum ntawm kev ua haujlwm ntawm qhov kub siab dua.

Cov yam ntxwv tseem ceebiav

iav hom no tau txais txiaj ntsig hauv ntau yam khoom thiab kev ua haujlwm zoo. Ua ntej ntawm tag nrho cov, qhov no yog qhov dav ntawm qhov kub thiab txias ntawm ib puag ncig uas iav tuaj yeem siv tau. Raws li tus qauv, cov khoom siv tiv taus te rau -80ºC thiab kub txog 525ºC. Los ntawm qhov pom ntawm kev ua haujlwm hauv kev kuaj mob, kev tiv thaiv tshuaj lom neeg ua ntej. Nws yog cov khoom zoo no uas tau txais txiaj ntsig nrog lub raj kuaj mob. Borosilicate iav nrog nws inertness yog txaus rau cov neeg siv kom ntseeg tau kev tiv thaiv cov ntsiab lus ntawm acids, ntsev, alkalis thiab organic tebchaw. Mechanical stability ntawm cov khoom no kuj tau sau tseg. Txij li qhov ceev ntawm borosilicate backing yog siab dua li cov iav silicate, nws yog qhov zoo dua los tiv thaiv kev pheej hmoo ntawm lub cev puas tsuaj. Tsis tas li ntawd, muaj zog thermal cuam tshuam tsis ua kom cov iav nto rau hauv cov khoom me me, tab sis tawg cov panels, uas ua rau blunt thiab ruaj ntseg npoo.

Qhov ntau thiab hom ntawm qhov teeb meem

Cov iav tshwj xeeb feem ntau yog tsim raws li kev txiav txim ntawm cov chaw kuaj mob thiab chaw kho mob. Txawm li cas los xij, kev tsim cov ntaub ntawv muab rau qee cov qauv tso tawm. Hauv particular, lub thickness ntawm lub iav vaj huam sib luag yuav yog 6-12 hli. Hauv qhov no, qhov yuam kev feem ntau tsis tshaj 0.3 hli. Cov hom ntawv siab tshaj plaws uas cov ntawv kub-resistant iav tau tsim yog sawv cev los ntawm qhov loj ntawm 150x300 cm. Tab sis, dua, los ntawm kev txiav txim tshwj xeeb, ntau lub lag luam, yog tias ua tau, nthuav cov kev txwv no.kev tsim khoom. Raws li qhov tsawg kawg nkaus qhov tseem ceeb, nws yog kev cai los txiav txim siab txog 10x10 cm hom raws li qhov tsawg tshaj plaws ntawm kev tsim cov iav.

thaj chaw thov

Raws li twb tau sau tseg lawm, cov yam ntxwv ntawm cov khoom siv yog qhov zoo tshaj plaws rau kev siv hauv chaw soj nstuam, hauv cov chaw kho mob, thiab lwm yam. Rau cov laj thawj zoo li no, cov tuam txhab tsim cov raj mis, cov hlab ntsha, cov hlab ntsha thiab lwm yam khoom siv. Lub borosilicate iav nqus raj, ntxiv rau cov yam ntxwv tshwj xeeb ntawm lub cev, kuj muaj cov qauv tsim. Txawm hais tias outwardly nws yuav zoo li tias qhov no yog ib lub raj, qhov tseeb muaj ob ntawm lawv thiab lawv tsim lub tshuab nqus tsev. Daim iav ntawm hom no kuj pom nws daim ntawv thov. Nws yog feem ntau siv los ua kev faib tawm, hauv kev siv tshuab kho qhov muag thiab thaum muab cov chav nrog kev tiv thaiv.

Fireproof borosilicate iav

Qhov zoo ntawm hluav taws kub yog qhov tshwj xeeb tshaj yog muaj nuj nqis - ib qho ntawm cov yam ntxwv tseem ceeb ntawm cov khoom siv borosilicate. Cov neeg tsim khoom tsim cov vaj huam sib luag tshwj xeeb rau glazing thiab qhov rooj thiab qhov rais panels nrog kev tiv thaiv zoo. Nyob rau tib lub sij hawm, piv txwv li, kab laug sab glazing yog qhov txawv tsis yog los ntawm hluav taws-resistant zog, tab sis kuj los ntawm mechanical resistance. Nyob rau hauv ib tug ua tiav txheej txheem yas qhov rais systems, kub-resistant iav kuj siv, uas muab thermal tiv thaiv. Cov khoom siv hluav taws kub-resistant rau kho kom zoo nkauj qab nthab thiab hauv pem teb kuj tau txais koob meej.

Kev txwv kev siv iav

Txawm tias muaj ntau yam kev pabcuam thiab kev ua haujlwm zoo,Cov khoom borosilicate muaj qee qhov kev txwv rau lawv siv. Raws li kev sib cuam tshuam nrog cov nplaim taws qhib, cov khoom muaj peev xwm tuav tau hluav taws tsis pub dhau ib teev. Qhov nuance no tsis tso cai rau siv cov iav zoo li no hauv chav nrog kev xav tau ntxiv rau kev nyab xeeb hluav taws. Kuj tseem muaj kev txwv rau lwm daim ntawv thov. Tshwj xeeb, chav kuaj iav iav tsis tiv thaiv kev sib cuag nrog hydrofluoric thiab hydrofluoric acids. Caustic alkali, cov nyhuv ntawm qhov muaj zog ntxiv los ntawm qhov kub thiab txias, kuj ua rau tsis zoo rau cov hlab ntsha nrog cov dej haus. Los ntawm nws tus kheej, huab cua kub tsis ua kom puas lub iav, tab sis tam sim ntawd kev hloov pauv tsis pub cov khoom siv los hloov cov qauv raws sij hawm.

Zaj lus

Borosilicate iav khoom yuav tsum tsis txhob raug suav tias yog cov khoom siv tshwj xeeb rau cov tshuaj tiv thaiv thiab tiv thaiv hluav taws. Peb tuaj yeem hais tias cov no yog cov yam ntxwv thib ob thiab txawm tias tus yam ntxwv pabcuam uas cov khoom siv ib txwm muaj los ua kom muaj kev ua tau zoo. Txawm li cas los xij, borosilicate iav, ntxiv rau kev tiv thaiv zoo, khaws cov khoom xws li pob tshab thiab lub teeb kis. Yog li ntawd, kev sib xyaw ua ke ntawm cov neeg kho tshuab tsis kam, hluav taws kub thiab translucency tso cai rau peb los txiav txim siab cov khoom siv tshwj xeeb. Yam tsawg kawg yog qhov chaw kuaj iav iav yog, uas, ntxiv rau cov yam ntxwv saum toj no, kuj muaj qhov zoo tshaj plaws inertness.