Nws puas tsim nyog ntxiv cov pob zeb hlawv rau cov av porosity tsawg?
Tsawg porosity av nplaum cibyuav tsum tau ntxiv nrog burnt gemstones kom txo tau lub pores. Cov theem ntawm qhov pores yog cuam tshuam nrog cov nyiaj hlawv gemstones ntxiv. Qhov ntau dua qhov ntxiv, qhov porosity qis dua, thiab kev pabcuam lub neej yuav ntev dua 2 npaug ntawm cov av nplaum zoo tib yam.
1. Cov yam ntxwv ntawm low porosity av nplaum cib
Charcoal yog ib yam khoom ntawm refractory raw khoom. Nws yog ib hom tawv refractory av nplaum. Lub ntsiab ntxhia yog kaolin. Hluav ncaig hluav taws xob muaj qhov ruaj khov, cov qauv sib zog, cov qauv ntom thiab cov plhaub zoo li tus ntoo khaub lig. Nws kuj muaj cov yam ntxwv ntawm qhov ruaj khov ntim, siab zog thiab tsis tshua muaj dej nqus. Los ntawm kev ntxiv ib qho kev faib ua feem ntawm burnt gemstones rau raw cov ntaub ntawv ntawm av nplaum cib, uas tsis muaj porosity av nplaum cib yuav ua tau. Tsawg-pore av nplaum muaj cov yam ntxwv ntawm kev ntom ntom ntom, cov hws qis thiab kev tawm tsam rau cov kua qaub yaig. muaj peev xwm. Nws cov yam ntxwv yog tias nws tsis yog oxidized thiab deformed ntawm qhov kub thiab txias. Los ntawm kev ntxiv ib qho kev faib ua feem ntawm charred gemstones, thiab tom qab ntawd los ntawm high-pressure molding thiab high-temperature firing, lub zog ntawm low-porosity av nplaum cib nce, qhov porosity tsawg tsawg, thiab cov dej nqus tus nqi qis dua.
2. Burnt gemstones raug muab qhab nia
Burnt gemstones muab faib ua qib, thiab cov khoom ntawm cov qib sib txawv kuj txawv. Lawv kuj muab faib ua tej daim loj thiab tej me me. Muaj ntau yam impurities nyob rau hauv me me. Tom qab ntxiv rau cov txheej txheem cib, cov pob dub thiab cov qhov tsua yuav tshwm sim. Raws li qhov yuav tsum tau muaj ntawm cov pores sib txawv, qee cov tuam ntxhab yuav nruj me ntsis tswj qhov zoo thaum yuav cov khoom siv raw, thiab yuav xaiv thiab huab cua qee qhov impurities. Ntawm chav kawm, qhov tsos, qhov pores thiab kev ua tau zoo ntawm cov av porosity tsawg ntawm cov av nplaum uas tsim los ntawm ntau theem ntawm cov pob zeb tawg yuav txawv.
3.Suitable kub rau mullite castable
Tom qab ntxiv charred gems rau low-porosity av nplaum cib, cov khoom ntawm charred gemstones yuav nyob rau hauv lub cib los tiv thaiv thiab inhibit qhov tshwm sim ntawm micro-pores thiab puas. Thaum muaj ntau cov micropores tsim nyob rau hauv cib, qhov ntev ntawm cov kab nrib pleb nyob rau hauv cov av nplaum cib nyob rau hauv thermal shock yuav luv luv, tab sis cov degree uas shortened tawg yuav sib tshuam nrog ib leeg los tsim ib lub network yuav nce. Yog li ntawd, ntxiv cov pob zeb kub hnyiab rau cov av nplaum cib tuaj yeem txhim kho thermal shock stability ntawm av nplaum cib thiab txhim kho cov spilling tsis kam ntawm av nplaum cib.
4. Burnt gems yuav tsum tau ntxiv los kho
Thaum cov txheej txheem ntawm cov khoom siv hluav taws xob yog cov roj av acidic, nws yog qhov tsim nyog los siv cov av nplaum uas tsis muaj porosity av nplaum, vim cov av nplaum zoo tib yam muaj qhov tsis zoo ntawm tev tawm, porosity siab, thiab nqus dej loj, tshwj xeeb tshaj yog tom qab qhov kub thiab txias, tiam ntawm cov dej. vapor ua rau Clay bricks yog spalling. Qhov sib ntxiv ntawm burnt gemstone av nplaum cib tsub kom tus nqi ntawm cov kua theem nyob rau hauv lub cev matrix, thiab burnt gemstone yuav txhawb sintering thiab txo lub pores ntawm lub cib.
Yog li ntawd, qhov pore qhov siab ntawm cov av porosity tsawg yuav tsum tau hloov kho los ntawm kev ntxiv cov pob zeb hlawv.
