Nyob rau hauv ib lub cub hluav taws kub uas khiav ib lub voj voog 45-feeb, cov rooj tog hauv tsev ua kom sov los ntawm qhov chaw mus rau qhov kub thiab txias thiab rov qab ntau dua peb caug zaug txhua hnub. Qhov ntawd yog peb caug thermal shock xwm txheej ib lub txee, ib hnub twg. Tshaj ib xyoos, ib lub txee muaj ntau tshaj kaum txhiab lub voj voog.
Feem ntau cov ntaub ntawv refractory tsis tuaj yeem muaj sia nyob qhov no. Lawv tawg, warp, los yog tsim nto spalling uas paug cov khoom. Cordierite kiln rooj tog tuav nws - tsis tu ncua thiab kev lag luam - vim yog ib qho khoom siv uas txawv ntawm txhua qhov kev hloov hauv tib qhov kub thiab nqi ntau yam.
Cov Khoom Uas Tseem Ceeb: Thermal Expansion
Cordierite (2MgO·2Al₂O₃·5SiO₂) muaj cov thermal expansion coefficient ntawm kwv yees li 1.5–2.5 × 10⁻⁶ / degree, ntsuas los ntawm chav tsev kub txog 1,000 degree. Rau kev sib piv:
Mullite: ~ 5.3 × 10⁻⁶ / degree
Corundum (alumina): ~ 8.1 × 10⁻⁶ / degree
Silicon carbide: ~ 4.5 × 10⁻⁶ / degree
Nthuav fireclay: ~ 5.5 × 10⁻⁶ / degree
Thaum lub qhov cub hluav taws kub ceev ceev, qhov saum npoo ntawm lub qhov hluav taws xob nthuav dav sai dua li cov khoom siv txias tom qab nws. Qhov kev nthuav dav sib txawv no ua rau muaj kev ntxhov siab tensile ntawm lub ntsej muag txias. Yog hais tias qhov kev ntxhov siab dhau los ntawm cov khoom siv ntawm qhov kev sib hloov ntawm qhov tawg, lub txee tawg.
Cordierite qhov sib txawv qis qis txhais tau hais tias qhov sib txawv ntawm lub ntsej muag kub thiab lub ntsej muag txias yog me dua nyob rau hauv siab dua - cov ntaub ntawv nthuav dav, txawm tias nyob rau hauv cov cua kub ceev. Lub tensile kev nyuaj siab uas yuav tawg ib tug mullite txee nyob rau hauv ib tug 30- feeb voj voog tsuas yog tsis tsim mus rau tsis ua hauj lwm nyob rau hauv cordierite. Qhov no tsis yog qhov kev txhim kho marginal - ntawm qhov sib npaug ntawm qhov nrawm nrawm, cordierite tiv taus thermal shock uas rhuav tshem ntau txoj hauv kev.
Cordierite-mullite compositions - feem ntau coj mus muag formulation - muab cordierite qhov tsawg expansion nrog mullite lub siab load- bearing zog. Cov khoom tsim tau muaj cov thermal expansion coefficient ntawm kwv yees li 2.5-3.5 × 10⁻⁶ / degree, me ntsis siab dua cov ntshiab cordierite tab sis tseem nyob deb ntawm lwm txoj hauv kev, thaum muab lub zog zoo dua nyob rau hauv cov khoom thauj ntawm qhov kub thiab txias.
Qhov twg qhov teeb meem no hauv kev xyaum
Sanitaryware thiab tableware tunnel kilns
Phab ntsa thiab hauv pem teb pobzeb, cov khoom siv tu cev, thiab cov tais diav ceramic yog raug rho tawm haujlwm hauv qhov cub los yog cov menyuam lub qhov cub ntawm qhov kub ntawm 1,150℃txog 1,280 degree. Cov kilns no yog tsim los rau throughput - pieces txav los ntawm qhov kub thiab txias profile tsis tu ncua. Cov rooj tog hauv qhov cub txav nrog lawv lossis nyob ruaj khov thaum cov khoom hla dhau nws, tab sis nyob rau hauv ob qho tib si lub thermal cycling tus nqi yog siab txheeb ze rau batch kilns.
Cordierite-mullite txee thiab setters yog tus qauv specification rau cov ntawv thov no. Lawv lub neej kev pab cuam nyob rau hauv lub pobzeb kiln khiav ntawm 1,180℃-1,220℃feem ntau mus txog 200-400 firing mus ua ntej yuav tsum tau hloov. Hom tsis ua hauj lwm thaum lub neej ua haujlwm tau mus txog yog maj mam sagging thiab warping es tsis txhob tam sim ntawd puas lawm - uas txhais tau hais tias cov rooj tog pom kev ceeb toom ua ntej nws ua rau cov khoom tsis xws luag.
Fast- hluav taws kub ceramic kiln
Fast- cov txheej txheem hluav taws kub - qhov twg tag nrho lub voj voog ntawm chav tsev kub mus rau qhov siab tshaj plaws thiab rov qab khiav hauv 40 mus rau 90 feeb - yog siv rau cov vuas, cov txheej txheem ceramics, thiab qee cov khoom siv hluav taws xob ntawm qhov kub txog li 1,300℃. Nyob rau hauv lub voj voog ceev no, thermal shock yog thawj tsim txwv rau kiln xaiv rooj tog. Cordierite-mullite rooj tog muaj sia nyob cov voj voog no; alumina-raws li lossis mullite-tsuas yog rooj tog zaum ntawm tus nqi tib yam nkaus xwb.
LTCC (Low Temperature Co-cuam tshuam Ceramic) sintering
LTCC substrates siv hauv cov khoom siv hluav taws xob yog sintered ntawm 850℃-950℃hauv kev tswj cov huab cua. Lub voj voog hluav taws xob luv luv thiab cov khoom lag luam muaj qhov sib txawv me me - txhua lub txee warpage txhais ncaj qha rau cov khoom sib txawv. Cordierite rooj tog, nrog rau nws qhov seem stability nyob rau hauv thermal cycling thiab tshuaj inertness ntawm cov kub, yog cov nyiam setter khoom rau LTCC ntau lawm.
Lithium roj teeb cathode khoom calcination
Cov khoom siv roj teeb cathode (NMC, LFP) yog calcined ntawm 700℃-1,000℃hauv huab cua lossis oxygen atmospheres. Kev caij tsheb kauj vab tuaj yeem ua tau siab, thiab ib puag ncig tshuaj lom neeg - lithium vapor ntawm qhov kub siab - tawm tsam cov ntaub ntawv uas tsim cov theem reactive nrog lithium. Cordierite qhov kev ruaj ntseg nyob rau hauv qhov no, ua ke nrog nws cov thermal shock kuj, ua rau nws haum rau qis dua - cov khoom siv roj teeb kub. Tshaj li 1,000℃rov calcination cycles, corundum mullite dhau los ua qhov kev xaiv zoo tshaj plaws vim tias cov thermal thiab tshuaj xav tau nce ntau dua li cordierite qhov kev pabcuam txhim khu kev qha.
Lub Ceiling Kub: Qhov twg Cordierite nres ua haujlwm
Cordierite kiln rooj tog muaj qhov ua tau zoo tshaj qhov kev pabcuam kub ntawm kwv yees li 1,280℃txog 1,320 degree, nyob ntawm seb muaj pes tsawg leeg thiab kev siv thauj khoom.
Saum toj no, ob qhov teeb meem tshwm sim. Ua ntej, theem cordierite nws tus kheej pib ua kom tsis ruaj khov - nws tuaj yeem decompose rau hauv mullite thiab iav ntawm qhov kub thiab txias siab tshaj 1,350 degree, poob qis - nthuav dav tus yam ntxwv uas ua rau nws muaj txiaj ntsig. Thib ob, lub load-cov kabmob muaj peev xwm poob qis tshaj 1,280 degree, ua rau cov txee sag hauv qab cov khoom hnyav hauv txoj hauv kev uas ua rau tsis zoo nrog txhua lub voj voog ua tiav.
Rau cov ntawv thov saum toj no 1,320℃- advanced technical ceramic sintering, siab -kub plooj (porcelain), qee yam hluav taws xob ceramics - corundum mullite kiln rooj tog yog qhov kev xaiv raug. Nws ua haujlwm kub txog 1,600℃thiab siab dua, nrog kev nkag siab zoo dua nyob rau hauv kev thauj mus los. Kev lag luam tawm - tawm yog tus nqi siab dua thiab qis dua thermal shock tsis kam, uas yog siv tau nyob rau hauv qeeb qeeb - voj voog, siab dua - kub kilns qhov twg thermal cycling tus nqi tsis yog thawj qhov kev txwv.
Cov ciam teb ua tau zoo: yog tias qhov kub siab tshaj nyob qis dua 1,280℃nrog kev caij tsheb kauj vab ntau zaus, cordierite-mullite. Tshaj 1,320℃los yog qhov chaw thauj khoom ntawm qhov kub thiab txias yog qhov kev txhawj xeeb tseem ceeb, corundum mullite.
Cordierite vs. Silicon Carbide: Lwm Txoj Kev
Silicon carbide (SiC) kiln rooj togyog qee zaus piv rau cordierite rau ceev- daim ntawv thov hluav taws. SiC muaj thermal conductivity ntau dua - nws heats thiab cools ntau uniformly, uas txo thermal gradients. Nws cov load-cov kabmob muaj peev xwm ntawm qhov kub thiab txias kuj siab dua cordierite.
Yog vim li cas cordierite-mullite tseem tseem ceeb rau cov khoom siv huv huv thiab cov pobzeb kiln rooj tog txawm tias SiC qhov zoo thermal zoo los ntawm ob yam.
Tshuaj compatibility.SiC kiln rooj tog tuaj yeem cuam tshuam cov xim thiab qhov chaw tiav ntawm cov khoom siv ceramic ntawm qhov kub siab tshaj 1,100℃los ntawm oxidation thiab huab cua cuam tshuam. Cordierite yog tshuaj nruab nrab hauv cov qauv oxidizing kiln cua thoob plaws nws cov kev pabcuam tag nrho.
Nqi.SiC kiln rooj tog nqa cov nqi tsev ntau dua li cordierite-mullite ntawm qhov sib piv. Nyob rau hauv siab -throughput pobzeb thiab cov khoom siv huv huv uas cov rooj tog tau noj hauv ntim thiab hloov tsis tu ncua, tus nqi sib txawv ntawm ib lub voj voog tseem ceeb ua haujlwm.
SiC rooj tog tau teev nyob qhov twg qhov kub siab tshaj cordierite qhov kev txwv, qhov twg load hnyav dua cordierite tuaj yeem nqa tau, lossis qhov twg cov thermal conductivity ntau dua ntawm SiC yog qhov tshwj xeeb rau cov khoom zoo. Rau qhov kub thiab txias thiab load tej yam kev mob uas cordierite npog, tus nqi -kev sib cav ua kom cordierite-mullite raws li tus qauv.
Cov Khoom Muag Khoom Muaj
Cordierite kiln rooj togyog tsim nyob rau hauv ntau hom qauv, txhua tus haum rau kev thauj khoom thiab kev txhawb nqa haujlwm:
Kiln txee (batts / phaj)- daim hlau tiaj tus hauv cov qauv thiab qhov ntev, siv los txhawb cov khoom txheej hauv cov khoom siv thiab qhov cub. Muaj nyob rau hauv cov khoom tsim thiab perforated; perforated rhawv txo qhov hnyav thiab tso cai rau cov pa roj los txhim kho kev sib tw tua hluav taws.
Cov txheej txheem- zoo li tus txhawb nqa tsim los tuav cov khoom geometry tshwj xeeb thaum tua. Setter profiles raug kho kom haum rau cov khoom lag luam kom ntseeg tau tias kev txhawb nqa tsis muaj kev tiv tauj.
Saggers- lub thawv- zoo li lub thawv ntim khoom ntim khoom thaum tua hluav taws, tswj cov huab cua hauv zos thiab tiv thaiv cov nplaim hluav taws ncaj qha los yog muaj plua plav paug. Cordierite-mullite saggers yog siv rau cov khoom rhiab rau huab cua variation hauv qab 1,280℃.
Props thiab posts- columnar txhawb cov pawg ntawm cov qib txee. Qhov siab thiab txoj kab uas hla yog xaiv raws li qhov load thiab inter- txheej txheej yuav tsum tau.
Kev cai profiles thiab qhov ntev yog muaj rau kev tsim khoom- cov kev cai tshwj xeeb.
Cov lus nug nquag
Dab tsi yog qhov kub ntawm cordierite kiln rooj tog ntsuas rau?Standard cordierite-mullite kiln rooj tog yog ntsuas rau 1,280℃-1,320℃siab tshaj qhov kev pabcuam kub. Cov kev ua tau zoo-cov kabmob txwv nyob rau hauv cov khoom hnyav feem ntau qis dua - ze rau 1,250℃-1,280℃rau cov khoom hnyav hnyav. Rau cov ntawv thov saum toj 1,320 degree, corundum mullite kiln rooj tog raug pom zoo.
cordierite kiln rooj tog piv rau corundum mullite li cas?Cordierite-mullite muaj qis thermal expansion (~ 2.5–3.5 × 10⁻⁶/℃vs. ~ 5–6 × 10⁻⁶/℃rau corundum mullite), muab nws zoo thermal shock resistance nyob rau hauv ceev- cycling kilns. Corundum mullite tuav qhov kub siab dua (txog 1,600℃+) thiab nqa hnyav dua ntawm qhov kub. Qhov kev xaiv nyob ntawm seb puas yog thermal cycling los yog siab -kub load bearing yog thawj qhov kev txwv.
Muaj pes tsawg lub voj voog hluav taws xob yuav tsum cordierite kiln rooj tog zaum kawg?Kev pabcuam lub neej txawv ntawm daim ntawv thov. Nyob rau hauv ib lub pobzeb kiln ntawm 1,180℃-1,220 degree, 200-400 cycles yog ib tug raug ntau yam rau rhawv. Hauv kev nrawm dua - kev caij tsheb kauj vab lossis siab dua - cov ntawv thov kub, kev pab cuam lub neej luv dua. Warping thiab maj mam deterioration deterioration yog ib txwm kawg- ntawm- lub neej qhia - kev puas tsuaj puas tsuaj los ntawm thermal shock, yog tias nws tshwm sim, qhia tias cov rooj tog tau siv saum toj no nws qhov kub thiab txias los yog caij tsheb kauj vab.
cordierite kiln rooj tog siv tau rau hauv lithium roj teeb cathode sintering?Yog lawm, rau calcination kub hauv qab 1,000℃qhov twg lithium vapor raug nruab nrab. Ntawm qhov kub thiab txias dua lossis nrog cov tshuaj tiv thaiv cathode aggressive (siab -nickel NMC), corundum mullite lossis alumina-raws li setters muab cov tshuaj zoo dua qub rau kev ua haujlwm txuas ntxiv. Sib tham txog qhov tshwj xeeb cathode chemistry thiab calcination kub nrog koj tus neeg muag khoom ua ntej cog lus rau cov rooj tog tshwj xeeb.
Rau cordierite-mullite kiln rooj tog specifications, cov duab kev cai, los yog daim ntawv thov tswv yim ntawm kiln xaiv rooj tog rau koj tshwj xeeb firing kub thiab voj voog profile,hu rau Thermaxcel Refractory.
