A guide in choosing the right material and glazes.Full description
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This paper defines thermal shock and discusses why thermal shock is important in ceramics. Thermal gradients are also described and the properties and conditions needed for thermal shock res…Full description
Ceramicists have been plying their art and craft for thousands of years, and never more prolifically than today. The Ceramics Bible is the most comprehensive and up-to-date volume on the sub…Full description
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This report is an individual assignment as a part ofFIN 501course under the MBA curriculum of IUBAT. The primary objective of this report is to analyze the financial statement of two prosperous cer...
Lecture notes, Ceramics and lasses, materials engineering, technology
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This document is about processing and application of ceramics
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Whiteware Definition- A term for ceramics products which are usually white and of fine texture. Types of Whitewares 1. EarthenwareEarthenware- a semi-vitreous semi-vitreous low fired dinnerware dinnerware which is porous porous and non-translucent. non-translucent. It has a soft glae and fired in the range of 1!""-#1"" $ahrenheit #. %hinawear%hinawear- a vitrified vitrified translucent translucent ware. ware. It has has an a&rasion resistance coated with a medium glae. '. (orcelain- a vitrified translucent translucent ware. It has higher a&rasion resistance than the the china ware and coated with hard glae. ). *toneware*toneware- also +nown +nown as as a crude crude porcelain. porcelain. ,ne ,ne of the the oldest oldest ceramic ceramic wares. . Whiteware tiles- floor floor and wall wall tiles which which are resistant to a&rasion. a&rasion. $loor $loor tiles may &e glaed or unglaed while wall tiles have a hard permanent surface. (roperties/ (hysical 0aturity/ Water a&sorption or porosity2 is the most common measure of maturity. It is most common to target ero-porosity. $ired shrin+age is also a good indication of maturity
(lasticity/ 3ighly plastic porcelains can have up to 45 drying shrin+age Drying (erformance. (orcelains often tend to crac+ when drying they do not have the green strength of stoneware &odies and can have very high drying shrin+ages Thermal *hoc+ 6esistance. This refers to the fired clay7s a&ility to withstand thermal gradients sudden changes in temperature to one part of a piece2 without crac+ing. *urface %haracter. The most pleasant surfaces are the most vitrified. %hemical/
"5 8aolinite #5$eldspar #5 $lint
6aw 0aterials/ 1. $lin lint- *i *i,# 2 It is also +nown as *ilica *and or 9uat. It provides an aggregate framewor+ for the fired matrix. A ma:or raw materials in ceramics and refractories. #. %hin %hina a %lay %lay-- Al Al#,'.#*i,#.#3#,2 It is also called as 8aolinite or 8aolin %lay. *econdary geologic deposits. (rimary source of aluminosilicates. Imparts plasticity and drying hardness to the wet materials and transforms into a mesh of crystals during firing
'. $eldspar- 8#,.Al#,'.;*i, #2 It acts as the fluxing agent to reduce melting temperatures of aluminosilicate phases.The melting of the feldspar fills the voids &etween the silica and clay particles and cements them into a strong mass. 6atio of 6aw 0aterials
Feldspar; 25%
0a:or %hemical 6eactions in the (rocess Al#,'.#*i,#.#3#,
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0anufacturing (rocess of (orcelain Ta&lewares 1. 0ixing of 6aw 0aterials- (roportioned raw materials were mixed inside the 3opper =ins #. =lunging- water is added to clay mixture. It produces slurry after passing through the =lunger '. $iltration- 0agnetic filter removes iron in the slurries bec aus ei r onoc c ur ss oper v as i v el y
i nmos tc l a y sandwi l l i mpar tundes i r abl er eddi s hhuet ot hebodyi fi to xi di z es ,r emo v i ng i tbef or efi r i ngi ses s ent i al ). Pr es s i ng-I ti sus edt or emo v ewat erf r om t hes l ur r yandf or m ac l a ymas s . . >iggering- it is a term used for mechanical way of forming of clay mass into different molds. ;. =is?ue $iring- first firing of the molds without glae. It is performed to remove excess water and volatile components and to minimie shrin+age. 0olds will &e heated up to ;" degrees %elsius 4. @laing- Applied to the ware &y means of painting spraying dipping or pouring. sually contains alumina silica and calcia. !. Bitrification- The heart of the process which will heat the glaed wares into a 1"" degrees %elsius. The formation of glass accomplished in this case through the melting of crystalline silicate compounds into the amorphous noncrystalline atomic structure associated with glass. C. Decoration- Designing the surface of the porcelain. This process is optional since not all of the porcelain products have decoration. 1". (ac+aging- The porcelain is now pac+ed and ready to &e transported.
%ompanies 1. (hilinco International %orporation %avite (hilippines Decorated Dolomite and (orcelain (lates
#. %*0 (hilippines Inc. =inan aguna Assorted (orcelain Decorations