Tus coefficient ntawm kev nthuav dav ntawm granite feem ntau yog nyob ib puag ncig 5.5-7.5x10 - ⁶ / ℃. Txawm li cas los xij, ntau hom granite, nws cov coefficient ntawm kev nthuav dav yuav txawv me ntsis.
Granite muaj kev ruaj khov kub zoo, feem ntau yog pom hauv cov hauv qab no:
Kev hloov pauv me me ntawm cov cua sov: vim nws cov coefficient nthuav dav tsawg, qhov kev hloov pauv ntawm cov cua sov ntawm granite yog qhov me me thaum qhov kub hloov pauv. Qhov no tso cai rau cov khoom granite kom tswj tau qhov loj me thiab cov duab ruaj khov dua hauv cov chaw kub sib txawv, uas yog qhov zoo rau kev ua kom muaj qhov tseeb ntawm cov khoom siv precision. Piv txwv li, hauv cov cuab yeej ntsuas siab, kev siv granite ua lub hauv paus lossis lub rooj ua haujlwm, txawm tias qhov kub thiab txias ib puag ncig muaj qee qhov kev hloov pauv, qhov kev hloov pauv ntawm cov cua sov tuaj yeem tswj tau hauv qhov me me, yog li kom ntseeg tau qhov tseeb ntawm cov txiaj ntsig ntsuas.
Kev tiv thaiv zoo thermal shock: Granite tuaj yeem tiv taus qee qib ntawm kev hloov pauv kub sai yam tsis muaj qhov tawg lossis puas tsuaj pom tseeb. Qhov no yog vim nws muaj kev ua tau zoo thermal conductivity thiab lub peev xwm cua sov, uas tuaj yeem hloov pauv cua sov sai thiab sib npaug thaum qhov kub hloov pauv, txo qhov kev ntxhov siab thermal sab hauv. Piv txwv li, hauv qee qhov chaw tsim khoom lag luam, thaum cov khoom siv tam sim ntawd pib lossis tsis ua haujlwm, qhov kub yuav hloov pauv sai, thiab cov khoom granite tuaj yeem hloov kho zoo dua rau qhov kev poob siab thermal no thiab tswj kev ruaj khov ntawm lawv cov kev ua tau zoo.
Kev ruaj khov zoo mus sij hawm ntev: Tom qab lub sij hawm ntev ntawm kev laus ntuj thiab kev ua haujlwm geological, kev ntxhov siab sab hauv ntawm granite tau raug tso tawm, thiab cov qauv ruaj khov. Hauv cov txheej txheem siv mus sij hawm ntev, txawm tias tom qab ntau lub voj voog kub hloov pauv, nws cov qauv sab hauv tsis yooj yim hloov pauv, tuaj yeem txuas ntxiv tswj kev ruaj khov kub zoo, muab kev txhawb nqa txhim khu kev qha rau cov khoom siv siab.
Piv nrog rau lwm cov ntaub ntawv siv, qhov thermal stability ntawm granite yog nyob rau theem siab dua, cov hauv qab no yog qhov sib piv ntawm granite thiab cov ntaub ntawv hlau, cov ntaub ntawv ceramic, cov ntaub ntawv sib xyaw hauv cov nqe lus ntawm thermal stability:
Piv nrog cov ntaub ntawv hlau:
Tus coefficient ntawm thermal expansion ntawm cov khoom siv hlau dav dav yog qhov loj heev. Piv txwv li, tus coefficient linear expansion ntawm cov hlau carbon ib txwm yog li 10-12x10 - ⁶/℃, thiab tus coefficient linear expansion ntawm txhuas alloy yog li 20-25x10 - ⁶/℃, uas yog siab dua li granite. Qhov no txhais tau tias thaum qhov kub hloov pauv, qhov loj ntawm cov khoom siv hlau hloov pauv ntau dua, thiab nws yooj yim los tsim kev ntxhov siab sab hauv ntau dua vim yog thermal expansion thiab txias contraction, yog li cuam tshuam rau nws qhov tseeb thiab kev ruaj khov. Qhov loj ntawm granite hloov pauv tsawg dua thaum qhov kub hloov pauv, uas tuaj yeem tswj tau cov duab qub thiab qhov tseeb zoo dua. Lub thermal conductivity ntawm cov khoom siv hlau feem ntau siab, thiab thaum lub sijhawm ua kom sov lossis txias sai, cua sov yuav raug coj mus sai, ua rau muaj qhov sib txawv ntawm qhov kub thiab txias loj ntawm sab hauv thiab qhov chaw ntawm cov khoom siv, ua rau muaj kev ntxhov siab thermal. Qhov sib piv, lub thermal conductivity ntawm granite yog qis, thiab lub cua sov conductivity qeeb, uas tuaj yeem txo qhov kev tsim ntawm thermal stress rau qee qhov thiab qhia tau tias thermal stability zoo dua.
Piv nrog cov ntaub ntawv ceramic:
Qhov coefficient ntawm thermal expansion ntawm qee cov khoom siv ceramic ua tau zoo tuaj yeem qis heev, xws li silicon nitride ceramics, uas nws cov coefficient ntawm linear expansion yog li 2.5-3.5x10 - ⁶/℃, uas qis dua granite, thiab muaj qee qhov zoo hauv thermal stability. Txawm li cas los xij, cov khoom siv ceramic feem ntau yog brittle, thermal shock tsis kam yog qhov tsis zoo, thiab cov kab nrib pleb lossis txawm tias cov kab nrib pleb yooj yim tshwm sim thaum qhov kub hloov pauv sai. Txawm hais tias qhov coefficient ntawm thermal expansion ntawm granite siab dua me ntsis dua li qee cov ceramics tshwj xeeb, nws muaj cov tawv zoo thiab thermal shock tsis kam, tuaj yeem tiv taus qee qib ntawm kev hloov pauv kub, hauv kev siv tiag tiag, rau feem ntau qhov chaw tsis hloov pauv kub heev, granite thermal stability tuaj yeem ua tau raws li qhov xav tau, thiab nws cov kev ua tau zoo yog qhov sib npaug ntau dua, tus nqi qis dua.
Piv nrog cov ntaub ntawv sib xyaw:
Qee cov ntaub ntawv sib xyaw ua ke siab heev tuaj yeem ua tiav cov coefficient qis ntawm kev nthuav dav thermal thiab kev ruaj khov thermal zoo los ntawm kev tsim qauv tsim nyog ntawm kev sib xyaw ua ke ntawm fiber thiab matrix. Piv txwv li, cov coefficient ntawm kev nthuav dav thermal ntawm cov khoom sib xyaw carbon fiber reinforced tuaj yeem hloov kho raws li kev taw qhia thiab cov ntsiab lus ntawm cov fiber, thiab tuaj yeem ncav cuag cov nqi qis heev hauv qee qhov kev taw qhia. Txawm li cas los xij, cov txheej txheem npaj ntawm cov ntaub ntawv sib xyaw yog qhov nyuaj thiab tus nqi siab. Raws li cov khoom siv ntuj, granite tsis xav tau cov txheej txheem npaj nyuaj, thiab tus nqi qis dua. Txawm hais tias nws yuav tsis zoo li qee cov ntaub ntawv sib xyaw ua ke siab hauv qee qhov ntsuas ntawm kev ruaj khov thermal, nws muaj qhov zoo ntawm kev ua tau zoo ntawm tus nqi, yog li nws tau siv dav hauv ntau daim ntawv thov ib txwm muaj uas muaj qee qhov yuav tsum tau ua rau kev ruaj khov thermal. Hauv cov lag luam twg yog cov khoom siv granite, kev ruaj khov kub yog qhov tseem ceeb xav txog? Muab qee cov ntaub ntawv xeem tshwj xeeb lossis cov ntaub ntawv ntawm granite thermal stability. Dab tsi yog qhov sib txawv ntawm ntau hom granite thermal stability?
Lub sijhawm tshaj tawm: Lub Peb Hlis-28-2025