Thaum peb xaiv cov khoom siv fiber ntau ceramic, peb yuav nug cov chaw tsim khoom rau cov ntaub ntawv tseem ceeb ntawm cov khoom lag luam thiab nkag siab cov ntaub ntawv tus nqi rau kev siv hauv kev xaiv, tab sis tej zaum tus neeg siv khoom tsis meej heev txog lub ntsiab lus ntawm tus nqi lossis qee qhov tshiab. cov neeg siv khoom tsis nkag siab lub ntsiab lus ntawm cov ntaub ntawv, ib txwm nrog peb tham txog lub ntsiab lus ntawm cov ntaub ntawv.Hnub no 100 kos rau koj los piav qhia cov khoom siv fiber ntau ntawm cov kev paub me me no, Kuv vam tias yuav pab koj!
1 Qhov sib txawv ntawm cov khoom siv rwb thaiv tsev thermal thiab cov ntaub ntawv refractory
Feem ntau hais lus, qis dua 1570 ℃ yog hu ua cov khoom siv rwb thaiv tsev;Tshaj 1570 ℃ yog cov khoom siv refractory.Ib txwm siv cov ntaub ntawv refractory feem ntau xa mus rau hnyav firebrick, castable, thiab lwm yam., qhov ntim ceev yog feem ntau 1000-2000kg / m3.
Qhov zoo ntawm ceramic fiber yog qhov pom tseeb heev, nyob rau hauv qhov chaw ntawm kev ua haujlwm zoo thermal rwb thaiv tsev, tab sis kuj muaj qhov hluav taws kub zoo, thiab yog cov khoom siv lub teeb, txo qhov hnyav ntawm lub cub tawg, txo cov tsoos installation vim kev txhawb nqa hnyav. cov khoom siv los ntawm ntau cov hlau.
2 kub hlau shrinkage
Index rau kev ntsuas qhov kub tsis kam (kev pabcuam kub) ntawm cov khoom siv fiber ntau ceramic.Kev sib koom ua ke thoob ntiaj teb ntawm cov khoom siv fiber ntau hauv cov khoom siv hluav taws xob tsis muaj cua sov rau qee qhov kub, kev txuag hluav taws xob rau 24 teev ntawm cov kab kub kub shrinkage qhia txog cov cua sov ua haujlwm ntawm ceramic fiber.
Qhov ntsuas kub ntawm cov cua sov xaim shrinkage tus nqi ≤3% yog qhov kev pabcuam kub kub ntawm cov khoom siv fiber ntau.Ntawm qhov kub no, amorphous ceramic fibers crystallize thiab loj hlob qeeb, thiab cov khoom fiber ntau ruaj khov thiab elastic.
Cua sov hlau shrinkage tus nqi ≤4% ntsuas kub rau cov khoom siv fiber ntau siv kub.
3 Thermal conductivity
Thermal conductivity yog ib yam khoom ntawm lub cev ntawm cov khoom, uas yog qhov Performance index ntawm thermal rwb thaiv tsev khoom ntawm ceramic fiber.
Nyob ntawm cov qauv ntawm cov khoom siv fiber ntau ceramic, ntim ntim, qhov kub thiab txias, cua sov cua sov, av noo thiab lwm yam.
Ceramic fiber yog sib xyaw ntawm cov khoom siv fiber ntau thiab cua nrog lub porosity ntawm 93%.Ib tug loj npaum li cas ntawm cov huab cua uas tsis muaj thermal conductivity yog sau nyob rau hauv lub qhov hws, thiab lub nruam network qauv ntawm cov khoom molecules raug puas tsuaj, thiaj li mus tau zoo heev adiabatic kev ua tau zoo.Thiab qhov me me ntawm lub pore txoj kab uas hla, raws li cov kev taw qhia ntawm tshav kub ntws los ntawm cov khoom fiber ntau muab faib ua lub xeev kaw ntawm cov pores, qhov zoo dua thermal rwb thaiv tsev kev ua tau zoo ntawm ceramic fiber.
4. Kev cuam tshuam ntawm cov tshuaj muaj pes tsawg leeg
Cov tshuaj muaj pes tsawg leeg ncaj qha txiav txim siab qhov kub ntawm cov fiber ntau:
(1) Al2O3, SiO2, ZrO2, Cr2O3 thiab lwm yam zoo Cheebtsam ≥99%, siab kub oxide ntsiab lus, ncaj qha txiav txim qhov kev ua tau zoo ntawm ceramic fiber.
(2) Fe2O3, Na2O, K2O, MgO thiab lwm yam impurities tsawg dua 1%, muaj teeb meem impurities, ncaj qha coj mus rau deterioration ntawm ceramic fiber ntau.
Post lub sij hawm: Feb-27-2023
