Nyob rau hauv cov txheej txheem ntawm kev debugging thiab siv glazes, ntxiv rau kom tau raws li cov kev kho kom zoo nkauj thiab kev ua tau zoo, lawv yuav tsum tau ua raws li cov txheej txheem yooj yim tshaj plaws. Peb sau thiab sib tham txog ob qhov teeb meem feem ntau hauv cov txheej txheem ntawm kev siv glazes.
1. Kev ua haujlwm ntawm glaze slurry tsis zoo
Vim tias kev tsim khoom ntawm lub Hoobkas ceramic yog tas li, yog tias muaj teeb meem nrog kev ua haujlwm ntawm glaze slurry, ntau yam tsis xws luag yuav tshwm sim hauv cov txheej txheem glazing, uas yuav cuam tshuam ncaj qha rau tus nqi zoo ntawm cov chaw tsim khoom cov khoom. Qhov tseem ceeb thiab kev ua tau zoo tshaj plaws. Cia peb ua raws li qhov yuav tsum tau ua ntawm lub tswb thawv glaze ntawm glaze slurry ua piv txwv. Ib qho zoo glaze slurry yuav tsum muaj: zoo fluidity, tsis muaj thixotropy, tsis muaj nag lossis daus, tsis muaj npuas nyob rau hauv lub glaze slurry, tsim nyog noo noo tuav, thiab ib tug tej yam lub zog thaum qhuav, thiab lwm yam txheej txheem kev ua tau zoo. Tom qab ntawd cia peb txheeb xyuas cov xwm txheej uas cuam tshuam rau kev ua haujlwm ntawm glaze slurry.
1) Dej zoo
Lub hardness thiab pH ntawm dej yuav cuam tshuam rau kev ua haujlwm ntawm glaze slurry. Feem ntau, kev cuam tshuam ntawm cov dej zoo yog hauv cheeb tsam. Cov dej kais dej hauv ib cheeb tsam feem ntau yog qhov ruaj khov tom qab kev kho mob, tab sis cov dej hauv av feem ntau tsis ruaj khov vim muaj cov ntsiab lus xws li cov ntsev ntsev hauv cov pob zeb thiab cov pa phem. Kev ruaj ntseg, yog li cov chaw tsim khoom lub pob zeb glaze slurry yog qhov zoo tshaj plaws los siv cov kais dej, uas yuav ruaj khov.
2) Soluble ntsev cov ntsiab lus nyob rau hauv raw cov ntaub ntawv
Feem ntau, nag lossis daus ntawm alkali hlau thiab alkaline ntiaj teb hlau ions hauv dej yuav cuam tshuam rau pH thiab muaj peev xwm sib npaug hauv glaze slurry. Yog li ntawd, hauv kev xaiv cov khoom siv ntxhia, peb sim siv cov ntaub ntawv uas tau ua tiav los ntawm flotation, dej ntxuav, thiab dej milling. Nws yuav tsawg, thiab cov ntsiab lus ntawm soluble ntsev nyob rau hauv raw cov ntaub ntawv kuj muaj feem xyuam rau tag nrho cov tsim ntawm ore veins thiab cov degree ntawm weathering. Cov mines sib txawv muaj cov ntsiab lus ntsev sib txawv. Ib txoj hauv kev yooj yim yog ntxiv dej hauv ib qho kev faib ua feem thiab ntsuas qhov ntws ntawm glaze slurry tom qab pob milling. , Peb sim siv tsawg los yog tsis muaj raw cov ntaub ntawv nrog tus nqi ntws tsis zoo.
3) Sodiumcarboxymethyl cellulosethiab sodium tripolyphosphate
Tus neeg sawv cev ncua kev siv nyob rau hauv peb architectural ceramic glaze yog sodium carboxymethylcellulose, feem ntau hu ua CMC, molecular saw ntev ntawm CMC ncaj qha cuam tshuam nws viscosity nyob rau hauv lub glaze slurry, yog hais tias lub molecular saw ntev dhau lawm, lub viscosity yog zoo, tab sis nyob rau hauv lub glaze slurry Npuas yog ib qho yooj yim tshwm sim nyob rau hauv nruab nrab thiab nws yog ib qho nyuaj rau tso tawm. Yog tias cov saw hlau molecular luv dhau, qhov viscosity raug txwv thiab kev sib txuas tsis tuaj yeem ua tiav, thiab glaze slurry yog ib qho yooj yim rau deteriorate tom qab muab tso rau ib lub sij hawm. Yog li ntawd, feem ntau ntawm cov cellulose siv nyob rau hauv peb factories yog nruab nrab thiab tsawg viscosity cellulose. . Qhov zoo ntawm sodium tripolyphosphate yog ncaj qha ntsig txog tus nqi. Tam sim no, ntau yam khoom ntawm kev ua lag luam tau ua phem heev, ua rau muaj kev poob qis hauv kev ua haujlwm degumming. Yog li ntawd, nws yog feem ntau tsim nyog los xaiv cov tuam txhab lag luam niaj hnub mus yuav, txwv tsis pub qhov poob ntau dua qhov nce!
4) Txawv teb chaws impurities
Feem ntau, qee cov roj pa phem thiab tshuaj lom neeg flotation yog inevitably coj los rau hauv lub sijhawm mining thiab ua cov ntaub ntawv raw. Ntxiv mus, ntau cov av nkos tam sim no siv qee cov organic additives nrog cov chains loj molecular. Roj paug ncaj qha ua rau concave glaze defects ntawm glaze nto. Flotation agents yuav cuam tshuam cov kua qaub-puag tshuav thiab cuam tshuam cov fluidity ntawm glaze slurry. Artificial av nkos additives feem ntau muaj cov saw loj molecular thiab ua rau muaj npuas.
5) Organic teeb meem nyob rau hauv raw cov ntaub ntawv
Mineral raw khoom yog inevitably coj mus rau hauv cov organic teeb meem vim ib nrab-lub neej, sib txawv thiab lwm yam. Qee yam ntawm cov organic teeb meem no nyuaj rau yaj hauv dej, thiab qee zaum yuav muaj cua npuas, sieving thiab thaiv.
2. Lub hauv paus glaze tsis zoo sib xws:
Kev sib piv ntawm lub cev thiab glaze tuaj yeem tham los ntawm peb yam: kev sib txuam ntawm kev tua hluav taws xob ntau, ziab thiab tua hluav taws sib txuam, thiab kev nthuav dav coefficient txuam. Cia peb txheeb xyuas lawv ib qho los ntawm ib qho:
1) Tshem tawm cov pa tawm lub sijhawm sib txuam
Thaum lub sij hawm cua sov txheej txheem ntawm lub cev thiab glaze, ib tug series ntawm lub cev thiab tshuaj hloov pauv yuav tshwm sim nrog rau qhov kub thiab txias, xws li: adsorption ntawm dej, tso dej siv lead ua, oxidative decomposition ntawm organic teeb meem thiab decomposition ntawm inorganic minerals, thiab lwm yam. ., cov tshuaj tiv thaiv tshwj xeeb thiab decomposition Qhov kub thiab txias tau raug sim los ntawm cov kws tshawb fawb laus, thiab nws tau luam tawm raws li hauv qab no rau kev siv ① Chav ntsuas kub -100 degrees Celsius, dej adsorbed volatilizes;
② 200-118 degrees Celsius dej evaporation ntawm compartments ③ 350-650 degrees Celsius hlawv tawm cov organic teeb meem, sulfate thiab sulfide decomposition ④ 450-650 degrees Celsius siv lead ua recombination, siv lead ua dej tshem tawm ⑤ 573 degrees Celsius quartz conversion, ntim hloov 0-9 ⑥ degrees Celsius calcite, dolomite decomposition, roj Exclude ⑦ 700 degrees Celsius los tsim tshiab silicate thiab complex silicate theem.
Qhov saum toj no sib thooj decomposition kub tsuas yog siv raws li ib tug siv nyob rau hauv tiag tiag ntau lawm, vim hais tias cov qib ntawm peb raw cov ntaub ntawv tau qis thiab qis, thiab, thiaj li yuav txo tau cov nqi ntau lawm, lub kiln firing voj voog yog luv thiab luv. Yog li ntawd, rau cov vuas luaj ceramic, qhov sib thooj decomposition cov tshuaj tiv thaiv kub kuj tseem yuav ncua sij hawm teb rau kev kub ceev, thiab txawm tias cov pa tawm hauv qhov kub siab yuav ua rau muaj ntau yam tsis xws luag. Txhawm rau ua noj dumplings, txhawm rau ua kom lawv ua noj sai, peb yuav tsum ua haujlwm hnyav rau ntawm daim tawv nqaij thiab cov khoom noj, ua rau cov tawv nqaij nyias, ua kom tsawg dua los yog tau txais qee yam khoom noj uas yooj yim ua noj, thiab lwm yam zoo tib yam rau cov vuas luaj ceramic. Hlawv, lub cev thinning, glaze firing ntau widening thiab hais txog. Kev sib raug zoo ntawm lub cev thiab glaze yog tib yam li cov ntxhais pleev xim. Cov neeg uas tau pom cov ntxhais pleev xim yuav tsum tsis txhob nyuaj rau kev nkag siab tias yog vim li cas muaj cov glazes hauv qab thiab sab saum toj glazes ntawm lub cev. Lub hom phiaj tseem ceeb ntawm kev pleev yog tsis zais qhov tsis zoo thiab Beautify nws! Tab sis yog tias koj tawm hws me ntsis, koj lub ntsej muag yuav stains, thiab koj tuaj yeem ua xua. Tib yam muaj tseeb rau cov vuas ceramic. Lawv tau raug hlawv zoo, tab sis cov pinholes tshwm sim, yog li vim li cas cov tshuaj pleev ib ce thiaj li ua pa thiab xaiv raws li ntau hom tawv nqaij? Cov tshuaj pleev ib ce sib txawv, qhov tseeb, peb cov glazes yog tib yam, rau lub cev sib txawv, peb kuj muaj cov glazes sib txawv kom haum rau lawv, ceramic vuas raug rho tawm haujlwm ib zaug, kuv tau hais hauv tsab xov xwm dhau los: Nws yuav zoo dua los siv cov ntaub ntawv raw ntau dua yog tias huab cua yog lig thiab qhia bivalent alkaline ntiaj teb hlau nrog carbonate. Yog hais tias lub cev ntsuab yog qaug zog ua ntej, siv ntau frits los yog qhia divalent alkaline ntiaj teb hlau nrog cov ntaub ntawv nrog tsawg ignition poob. Lub hauv paus ntsiab lus ntawm kev qaug zog yog: qhov kub ntawm lub cev ntsuab feem ntau qis dua qhov glaze, yog li ntawd lub glazed nto yog qhov zoo nkauj tom qab cov roj hauv qab no tawm, tab sis nws yog qhov nyuaj rau kev ua tiav hauv cov khoom tiag tiag, thiab softening point ntawm glaze yuav tsum tau txav mus kom zoo rov qab los ua kom lub cev tso tawm.
2) Drying thiab tua shrinkage matching
Txhua tus hnav khaub ncaws, thiab lawv yuav tsum tau xis nyob, lossis yog tias muaj kev saib xyuas me ntsis, cov seams yuav qhib, thiab glaze ntawm lub cev zoo li cov khaub ncaws peb hnav, thiab nws yuav tsum haum zoo! Yog li ntawd, lub drying shrinkage ntawm glaze yuav tsum sib phim lub cev ntsuab, thiab nws yuav tsum tsis txhob loj los yog me me, txwv tsis pub cov kab nrib pleb yuav tshwm sim thaum ziab, thiab cov cib tiav yuav muaj qhov tsis xws luag. Tau kawg, raws li kev paub dhau los thiab qib kev ua haujlwm ntawm cov neeg ua haujlwm glaze tam sim no Nws tau hais tias qhov no tsis yog qhov teeb meem nyuaj ntxiv lawm, thiab cov kev debuggers kuj tseem zoo heev ntawm kev tuav cov av nplaum, yog li cov xwm txheej saum toj no tsis tshwm sim ntau zaus, tshwj tsis yog cov teeb meem saum toj no tshwm sim nyob rau hauv qee lub chaw tsim khoom nrog cov khoom hnyav heev.
3) Expansion coefficient matching
Feem ntau, qhov nthuav dav coefficient ntawm lub cev ntsuab yog me ntsis loj dua li ntawm cov glaze, thiab cov glaze raug kev nyuaj siab tom qab tua ntawm lub cev ntsuab, kom lub thermal stability ntawm glaze zoo dua thiab tsis yooj yim rau tawg. . Qhov no kuj yog qhov kev xav uas peb yuav tsum kawm thaum peb kawm silicates. Ob peb hnub dhau los ib tug phooj ywg nug kuv: yog vim li cas qhov expansion coefficient ntawm lub glaze yog loj dua li ntawm lub cev, yog li lub cib puab yuav warped, tab sis lub expansion coefficient ntawm glaze yog me dua li ntawm lub cev, yog li lub cib. puab yog nkhaus? Nws yog qhov tsim nyog hais tias tom qab ua kom sov thiab nthuav dav, lub glaze loj dua lub hauv paus thiab yog nkhaus, thiab glaze yog me dua lub hauv paus thiab yog warped ...
Kuv tsis maj muab lus teb, cia peb saib seb qhov coefficient ntawm thermal expansion yog dab tsi. Ua ntej tshaj plaws, nws yuav tsum yog tus nqi. Tus nqi zoo li cas? Nws yog tus nqi ntawm qhov ntim ntawm cov khoom uas hloov nrog kub. Zoo, txij li thaum nws hloov nrog "kub", nws yuav hloov thaum kub nce thiab ntog. Lub thermal expansion coefficient peb feem ntau hu ua ceramics yog qhov tseeb qhov ntim expansion coefficient. Lub coefficient ntawm ntim expansion feem ntau muaj feem xyuam rau cov coefficient ntawm linear expansion, uas yog hais txog 3 npaug ntawm linear expansion. Qhov ntsuas kev nthuav dav coefficient feem ntau muaj qhov chaw, uas yog, "nyob rau hauv ib qho kev ntsuas kub". Piv txwv li, qhov nkhaus zoo li cas yog tus nqi ntawm 20-400 degrees Celsius feem ntau? Yog tias koj hais kom sib piv tus nqi ntawm 400 degrees rau 600 degrees Tau kawg, tsis muaj lub ntsiab lus xaus tuaj yeem rub tawm los ntawm kev sib piv.
Tom qab nkag siab lub tswvyim ntawm expansion coefficient, cia peb rov qab mus rau lub ntsiab lus qub. Tom qab cov vuas yog rhuab nyob rau hauv lub kiln, lawv muaj ob qho tib si expansion thiab contraction theem. Cia peb tsis txhob xav txog qhov kev hloov pauv ntawm thaj chaw kub siab vim yog thermal expansion thiab contraction ua ntej. Vim li cas? Vim tias, ntawm qhov kub thiab txias, ob lub cev ntsuab thiab glaze yog yas. Muab nws bluntly, lawv yog mos, thiab lub zog ntawm lub ntiajteb txawj nqus yog ntau tshaj lawv tus kheej nro. Qhov zoo tshaj plaws, lub cev ntsuab yog ncaj thiab ncaj, thiab kev nthuav dav coefficient tsis tshua muaj txiaj ntsig. Tom qab cov pobzeb ceramic dhau los ntawm qhov kub thiab txias, nws nkag mus rau qhov txias txias thiab qeeb qeeb, thiab cov nplais ceramic yuav nyuaj los ntawm lub cev yas. Raws li qhov kub thiab txias, lub ntim shrinks. Yog lawm, qhov loj dua qhov nthuav coefficient, qhov loj dua qhov shrinkage, thiab qhov me me ntawm expansion coefficient, qhov me dua qhov sib thooj shrinkage. Thaum lub expansion coefficient ntawm lub cev yog ntau dua li ntawm glaze, lub cev shrinks ntau tshaj lub glaze thaum lub sij hawm txias, thiab lub cib yog nkhaus; Yog hais tias lub expansion coefficient ntawm lub cev yog me dua li ntawm glaze, lub cev shrinks tsis muaj lub glaze thaum lub sij hawm txias. Yog tias muaj ntau lub cib, cov cib yuav tig mus, yog li nws tsis yooj yim los piav cov lus nug saum toj no!
Lub sij hawm xa tuaj: Plaub Hlis-25-2024