Yuav ua li cas txhim kho qhov hnav tsis kam ntawm mullite casket

Yuav ua li cas txhim kho qhov hnav tsis kam ntawm mullite casket

Thaum muas ib tug saggar, peb yuav xyuam xim rau cov khoom ntawm lub saggar, raws li cov khoom ncaj qha txiav txim siab kub tsis kam thiab tus naj npawb ntawm rov firing ntawm lub saggar. Yog li, dab tsi cuam tshuam los txiav txim siab qhov zoo ntawm saggar thaum khaws cov khoom tsis tu ncua? Tam sim no peb siv mullite saggar ua cov khoom tsom xam thiab tsuas yog txheeb xyuas qhov tom ntej, uas yog qhov hnav tsis kam ntawm saggar. Cia peb ua ib qho kev sib piv tshwj xeeb: Kev hnav tsis kam ntawm mullite casket muaj feem xyuam rau nws cov kev tiv thaiv rau cov neeg kho tshuab hnav ntawm nws qhov chaw los ntawm cov khoom, kua, thiab plua plav airflow.

Feem ntau, kev puas tsuaj los ntawm kev siv tshuab thiab tsim kua muag ntawm qhov chaw ntawm lub tais mullite feem ntau hnyav heev. Nws feem ntau yog qhov ua rau ncaj qha ntawm qhov hnav thiab tsim kua muag ntawm lub hleb mullite vim nws qhov kev ua haujlwm zoo. Qee zaum, nws ua rau muaj kev puas tsuaj ntau dua li cov tshuaj tiv thaiv corrosion, los yog kev puas tsuaj los ntawm cov tshuaj lom neeg corrosion, feem ntau exacerbated los ntawm txhua yam teebmeem. Lub refractory hauv ob sab phlu thiab hlau ditch nyob rau hauv lub Upper ib feem ntawm lub moj tej tawg rauv yog feem ntau hnav vim tsis hnav tsis kam. Cov ntaub ntawv refractory ntawm coking chamber ntawm lub qhov cub coke kuj raug rau hnav thiab tsim kua muag los ntawm coke. Lub qhov cub lub qhov ncauj, lub qhov hluav taws xob hlau, thiab lwm qhov chaw cuam tshuam los ntawm cov roj ntws yaig thiab cov kua dej ntau ntau feem ntau raug kev txom nyem los ntawm kev hnav thiab tsim kua muag vim qhov hnav tsis zoo ntawm cov khoom siv. Yog li ntawd, hnav tsis kam ntawm mullite casket yog ib qho khoom tseem ceeb.

Kev hnav tsis kam ntawm mullite casket nyob ntawm qhov muaj pes tsawg leeg thiab kev teeb tsa ntawm cov ntaub ntawv. Thaum cov ntaub ntawv yog tsim los ntawm ib tug siv lead ua thiab ib tug ntom polycrystalline cov ntaub ntawv, nws hnav tsis kam feem ntau yog nyob ntawm hardness ntawm cov pob zeb hauv av crystals uas ua rau cov ntaub ntawv. High hardness, siab hnav tsis kam ntawm cov khoom. Thaum cov pob zeb hauv av tsis yog isotropic, cov nplej loj yog qhov zoo thiab qhov hnav tsis kam ntawm cov ntaub ntawv yog siab dua. Thaum ib qho khoom tsim los ntawm ntau theem, nws qhov hnav tsis kam yog ncaj qha ntsig txog qhov ntim ntom ntom lossis porosity ntawm cov khoom, nrog rau lub zog ntawm kev sib raug zoo ntawm txhua qhov khoom. Yog li ntawd, nyob rau hauv chav tsev kub, hnav tsis kam ntawm ib yam ntawm mullite lub tais yog ncaj qha proportional rau nws compressive zog, thiab cov khoom uas zoo heev sintering kuj muaj zoo hnav tsis kam. Qhov hnav tsis kam ntawm cov khoom siv refractory muaj feem xyuam rau qhov kub thiab txias. Qee cov ntaub ntawv, xws li silicon aluminium refractory khoom, feem ntau xav tias ntawm qhov kub thiab txias (xws li nyob rau hauv qhov elasticity hauv qab 700-900 degree), qhov kub thiab txias, qhov hnav tsis kam. Qhov no tuaj yeem raug ntaus nqi rau qhov txo qis hauv kev hnav tsis kam vim qhov kub nce ntxiv thiab cov elastic modulus ntxiv. Thaum qhov kub thiab txias nce mus txog qhov siab tshaj plaws ntawm cov elastic modulus, qhov hnav tsis kam ua tau zoo nrog qhov txo qis ntawm elastic modulus. Aluminium silicate refractory khoom muaj kev hnav zoo dua li cov nyob hauv chav sov ntawm qhov kub ntawm 1200 txog 1350 degree. Thaum qhov kub thiab txias ntxiv mus rau saum 1400 degree, qhov hnav tsis kam txo qis vim qhov txo qis hauv cov kua viscosity hauv cov khoom refractory. Qee cov ntaub ntawv refractory, xws li chromium muaj cov khoom, ua rau lawv hnav tsis kam nrog qhov kub thiab txias.

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