Lub linear expansion coefficient ntawm granite feem ntau yog nyob ib ncig ntawm 5.5-7.5x10 - ⁶ / ℃. Txawm li cas los xij, ntau hom granite, nws cov coefficient expansion yuav txawv me ntsis.
Granite muaj qhov kub thiab txias stability, feem ntau xav txog hauv qab no:
Cov thermal deformation me me: vim nws qhov nthuav dav coefficient tsawg, thermal deformation ntawm granite yog me me thaum kub hloov. Qhov no tso cai rau cov khoom siv granite kom muaj qhov loj thiab ruaj khov nyob rau hauv qhov sib txawv ntawm qhov kub thiab txias, uas yog qhov tsim nyog los xyuas kom meej cov khoom siv precision. Piv txwv li, nyob rau hauv high-precision ntsuas ntsuas, kev siv granite ua lub hauv paus lossis workbench, txawm tias qhov kub thiab txias muaj qhov hloov pauv, cov thermal deformation tuaj yeem tswj tau ntau yam me me, txhawm rau xyuas qhov tseeb ntawm qhov ntsuas tau.
Zoo thermal poob siab tsis kam: Granite tuaj yeem tiv taus qee qhov kev hloov pauv kub sai yam tsis muaj kev sib tsoo lossis kev puas tsuaj. Qhov no yog vim nws muaj cov thermal conductivity zoo thiab muaj peev xwm ua kom sov, uas tuaj yeem hloov cov cua sov sai thiab sib npaug thaum qhov kub hloov pauv, txo cov thermal stress concentration. 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 thiab txias yuav hloov pauv sai, thiab cov khoom siv granite tuaj yeem hloov kho kom zoo dua rau qhov thermal shock thiab tswj kev ruaj ntseg ntawm lawv cov kev ua tau zoo.
Kev ruaj ntseg zoo rau lub sijhawm ntev: Tom qab lub sijhawm ntev ntawm kev laus thiab kev ua haujlwm ntawm geological, cov kev ntxhov siab sab hauv ntawm granite tau raug tso tawm, thiab cov qauv ruaj khov. Nyob rau hauv txoj kev siv lub sij hawm ntev, txawm tias tom qab ntau lub voj voog kub hloov, nws cov qauv sab hauv tsis yooj yim hloov, tuaj yeem ua kom muaj kev ruaj ntseg zoo, muab kev txhawb nqa zoo rau cov khoom siv siab.
Piv nrog rau lwm yam khoom siv, thermal stability ntawm granite yog nyob rau theem siab dua, cov hauv qab no yog kev sib piv ntawm granite thiab hlau cov ntaub ntawv, cov ntaub ntawv ceramic, cov ntaub ntawv sib xyaw ua ke ntawm thermal stability:
Piv nrog cov khoom siv hlau:
Lub coefficient ntawm thermal expansion ntawm cov ntaub ntawv hlau dav dav kuj loj. Piv txwv li, linear expansion coefficient ntawm cov pa roj carbon zoo tib yam yog hais txog 10-12x10 - ⁶ / ℃, thiab linear expansion coefficient ntawm aluminium alloy yog li 20-25x10 - ⁶ / ℃, uas yog ho siab dua granite. Qhov no txhais tau hais tias thaum qhov kub thiab txias hloov, qhov loj ntawm cov khoom siv hlau hloov pauv ntau dua, thiab nws yooj yim los tsim cov kev ntxhov siab ntau dua vim yog thermal expansion thiab txias contraction, yog li cuam tshuam rau nws qhov tseeb thiab ruaj khov. Qhov luaj li cas ntawm granite hloov tsawg dua thaum qhov kub thiab txias hloov, uas tuaj yeem tswj tau qhov zoo ntawm qhov qub thiab raug. Lub thermal conductivity ntawm cov ntaub ntawv hlau feem ntau yog siab, thiab nyob rau hauv cov txheej txheem ntawm cov cua kub ceev los yog txias, cua sov yuav ua sai sai, uas ua rau ib tug loj kub sib txawv ntawm sab hauv thiab saum npoo ntawm cov khoom, ua rau thermal stress. Nyob rau hauv sib piv, thermal conductivity ntawm granite yog tsawg, thiab lub tshav kub conduction kuj qeeb, uas yuav txo tau lub tiam ntawm thermal kev nyuaj siab rau ib tug tej yam thiab qhia tau zoo thermal stability.
Piv nrog cov ntaub ntawv ceramic:
Lub thermal expansion coefficient ntawm qee cov khoom siv ceramic tuaj yeem ua tau tsawg heev, xws li silicon nitride ceramics, nws cov kab nthuav dav coefficient yog li 2.5-3.5x10 - ⁶ / ℃, uas yog qis dua granite, thiab muaj qee yam zoo hauv thermal stability. Txawm li cas los xij, cov ntaub ntawv ceramic feem ntau yog nkig, thermal shock kuj tsis zoo, thiab cov kab nrib pleb los yog cov kab nrib pleb yooj yim tshwm sim thaum kub hloov pauv. Txawm hais tias lub thermal expansion coefficient ntawm granite yog me ntsis siab dua qee qhov tshwj xeeb ceramics, nws muaj qhov zoo toughness thiab thermal shock tsis kam, tuaj yeem tiv taus qee qhov kev hloov pauv ntawm qhov kub thiab txias, hauv kev siv, rau feem ntau qhov kub tsis txias hloov ib puag ncig, granite thermal stability tuaj yeem ua tau raws li qhov yuav tsum tau ua, thiab nws cov kev ua tau zoo tshaj plaws yog qhov sib npaug, tus nqi kuj tsawg.
Piv nrog cov ntaub ntawv sib xyaw:
Qee cov ntaub ntawv sib xyaw ua tau zoo tuaj yeem ua tiav qis coefficient ntawm thermal expansion thiab thermal stability zoo los ntawm kev tsim tsim nyog ntawm kev sib xyaw ntawm fiber ntau thiab matrix. Piv txwv li, cov coefficient ntawm thermal expansion ntawm carbon fiber reinforced composites tuaj yeem hloov kho raws li cov kev taw qhia thiab cov ntsiab lus ntawm fiber ntau, thiab tuaj yeem ncav cuag qhov tseem ceeb hauv qee cov lus qhia. Txawm li cas los xij, cov txheej txheem kev npaj ntawm cov ntaub ntawv sib xyaw yog qhov nyuaj thiab tus nqi siab. Raws li cov khoom siv ntuj tsim, granite tsis xav tau cov txheej txheem kev npaj ua haujlwm nyuaj, thiab tus nqi kuj tsawg. Txawm hais tias nws yuav tsis zoo li qee cov khoom siv high-end hauv qee qhov ntsuas ntawm thermal stability, nws muaj qhov zoo ntawm cov nqi kev ua tau zoo, yog li nws yog dav siv nyob rau hauv ntau cov pa siv uas muaj qee yam kev xav tau rau thermal stability. Hauv kev lag luam twg yog cov khoom siv granite siv, qhov kub thiab txias yog qhov tseem ceeb rau kev txiav txim siab? Muab qee cov ntaub ntawv xeem tshwj xeeb lossis rooj plaub ntawm granite thermal stability. Dab tsi yog qhov sib txawv ntawm ntau hom granite thermal stability?
Lub sij hawm xa tuaj: Mar-28-2025