Adopt the pottery production method of engobe decorating
Technical field
The present invention relates to the manufacture method of ceramic, especially relate to a kind of pottery production method that adopts engobe decorating.
Background technology
Modern ceramic, particularly ceramic ware for daily use is to becoming more meticulous and high-quality future development, and the starting material of its use require higher, more become more meticulous, cause the meticulous and high-quality raw material supply of part nervous, and low grade or coarse starting material are dropped, and are not used.For example, the potter's clay that iron-holder is higher, when making ceramic, the whiteness of goods declines, and outward appearance is plain, and these mineral material storages are very large, and price is lower.How to adopt the potter's clay that iron-holder is higher, produce the ceramic of high-quality, the sexual development held that is related to ceramic industry, also be directly connected to products production cost, utilize the potter's clay that iron-holder is higher to make carcass, adopt special trailing, as cosmetic soil (engobe) is decorated, the visual appearance that improves ceramic is the problem of research of technique in ceramic industry always.
Summary of the invention
The invention provides a kind of pottery production method that adopts engobe decorating, specifically, is the method that adopts engobe decorating on the made ceramic matrix of potter's clay that iron-holder is higher adopting, and makes outward appearance and the quality of the pottery product made reach higher class.
A pottery production method that adopts engobe decorating, comprises the following steps:
1. prepare finished product blank
Potter's clay 85-92%, clay 7-13%, the talcum 0.5-3% of getting by weight percentage iron-holder 3-8% are blended into after blank raw material, get by weight blank raw material 50%, clear water 50%, pack ball mill into and carry out ball milling formation slurries, slurries are crossed to 200 mesh sieves, by pressing the ceramic raw material preparation method of the routines such as (squeezings) mud, pugging, making water content, be that 23-25% finished product blank is standby;
2. prepare cosmetic soil finished product slurries
Finished product transparent (fine pottery glaze) 3-5%, albite 36-38%, potassium felspar sand 47-49%, clay 3%, the zirconium silicate 8% of getting by weight percentage 1080-1120 ℃ of firing temperatures are blended into after cosmetic soil raw material, get by weight cosmetic soil raw material 50%, clear water 50%, packing ball mill into carries out ball milling and becomes slurries, slurries are crossed to 250 mesh sieves, make water ratio and be 50% cosmetic soil finished product slurries standby;
3. transparent is standby
The finished product transparent (fine pottery glaze) of getting 1080-1120 ℃ of firing temperatures is standby;
4. prepare shale carcass
Get the ordinary method (comprising roll forming or injection forming) that finished product blank adopts ceramic moulding to produce, make the shale carcass (as dish, bowl) of upward opening, then seasoning is to shale carcass water ratio 8-10%;
5. adopt cosmetic soil to decorate shale carcass
(1) engobe decorating of shale carcass inner chamber
Finished product slurries are packed in the container that is equipped with slush pump, container upward opening, a stainless steel tube that diameter is 2-3cm is erect in container center position, stainless steel tube upper end is consistent with container upper end height, stainless steel tube lower end is connected with the outlet pipe of slush pump, and the pulp-entering pipe of slush pump is connected with container; Open slush pump, make stainless steel tube upper end vertical up-spray go out slurries, slurries jetting height is 30-40cm;
With stainless steel clamp clamps shale carcass, shale carcass (as dish, bowl) is bottom-up, vertical decline from top to bottom, the slurries that spray to the inner chamber uniform contact of shale carcass, contact slurries are after 5-10 seconds, shale carcass rises and leaves injection slurries, stops after 5-10 seconds, again declines and accepts slurries injection; The surface of internal cavity of the shale carcass spraying through twice slurries, forms the engobe decorating layer of thickness 28-32mm, shale carcass seasoning 8-10 hours;
(2) engobe decorating of shale carcass outside (non-inner chamber)
Finished product slurries are contained in to (in plastic tank) in plastic containers, with stainless steel clamp clamps shale carcass, by the bottom of shale carcass down, opening up, flatly decline and contact the slurries in plastic containers, the opening part that slurries are dipped to shale carcass stops declining, and stops 10-15 seconds, and shale carcass rises and departs from slurries; The slurries of wiping shale carcass base plane with wet cloth, retain the formed engobe decorating layer of shale carcass outer periphery, engobe decorating layer thickness 28-30mm, shale carcass seasoning 8-10 hours;
6. sintering
By putting into kiln through the shale carcass of engobe decorating, carry out sintering, sintering time 6-7 hours, 1040-1060 ℃ of temperature, sintering atmosphere is oxidizing atmosphere, shale carcass forms goods through sintering; Shale carcass in goods and the fusion of engobe decorating layer are integrated, and products appearance color is engobe decorating layer color, surface smoothing;
7. glazing
Adopt standby finished product transparent, concentration is adjusted to 28-30 degree Beaume; The glaze mode of soaking that adopts ceramic routine, goods soak glaze 4-6 seconds, through soaking the goods seasoning 5-8 hours of glaze;
8. burn till
By putting into kiln through the goods of glazing, burn till, 1080-1120 ℃ of firing temperatures, firing time 6-7 hours, firing atmosphere is oxidizing atmosphere, makes product.
The present invention adopts the material of low-quality to make, and can reach waste material utilization, has realized again low cost production, and the product appearance of making and quality can reach higher class.
Accompanying drawing explanation
Fig. 1 is the structural representation that in the embodiment of the present invention, shale carcass inner chamber carries out engobe decorating.In figure, except slush pump, all adopt sectional view form to draw.
Description of symbols in Fig. 1: 1---slush pump; 2---the container of slush pump is equipped with; 3---stainless steel tube; 4---shale carcass; 5---shale carcass bottom; 6---shale carcass inner chamber.
Embodiment
Embodiment: as shown in Figure 1, the pottery production method of employing engobe decorating of the present invention, comprises following production stage:
1. prepare finished product blank
The potter's clay 88% of getting by weight percentage clay 10%, talcum 2%, iron-holder 5% is blended into after blank raw material, get by weight blank raw material 50%, clear water 50%, pack ball mill into and carry out ball milling formation slurries, slurries are crossed to 200 mesh sieves, by pressing the ceramic raw material preparation method of the routines such as (squeezings) mud, pugging, making water content, be that 24% finished product blank is standby;
2. prepare cosmetic soil finished product slurries
Finished product transparent 4%, albite 37%, potassium felspar sand 48%, clay 3%, the zirconium silicate 8% of getting by weight percentage 1080-1120 ℃ of firing temperatures are blended into after cosmetic soil raw material, get by weight cosmetic soil raw material 50%, clear water 50%, packing ball mill into carries out ball milling and becomes slurries, slurries are crossed to 250 mesh sieves, make water ratio and be 50% cosmetic soil finished product slurries standby;
3. transparent is standby
The finished product transparent of getting 1080-1120 ℃ of firing temperatures is standby;
4. prepare shale carcass
Get the ordinary method that finished product blank adopts ceramic moulding to produce, make the shale carcass of upward opening, then seasoning is to shale carcass water ratio 10%;
5. adopt cosmetic soil to decorate shale carcass
(1) engobe decorating of shale carcass inner chamber
Finished product slurries are packed in the container that is equipped with slush pump, container upward opening, a stainless steel tube that diameter is 3cm is erect in container center position, and stainless steel tube upper end is consistent with container upper end height, stainless steel tube lower end is connected with the outlet pipe of slush pump, and the pulp-entering pipe of slush pump is connected with container; Open slush pump, make stainless steel tube upper end vertical up-spray go out slurries, slurries jetting height is 35cm;
With stainless steel clamp clamps shale carcass, shale carcass is bottom-up, vertical decline from top to bottom, to the slurries that the inner chamber uniform contact of shale carcass is sprayed, contact slurries are after 8 seconds, and shale carcass rises and leaves injection slurries, stop after 8 seconds, again decline and accept slurries injection; The surface of internal cavity of the shale carcass spraying through twice slurries, forms the engobe decorating layer of thickness 30mm, shale carcass seasoning 9 hours;
(2) engobe decorating of shale carcass outside (non-inner chamber)
Finished product slurries are contained in plastic containers, with stainless steel clamp clamps shale carcass, by the bottom of shale carcass down, opening up, flatly decline and contact the slurries in plastic containers, the opening part that slurries are dipped to shale carcass stops declining, and stops 12 seconds, and shale carcass rises and departs from slurries; The slurries of wiping shale carcass base plane with wet cloth, retain the formed engobe decorating layer of shale carcass outer periphery, engobe decorating layer thickness 28mm, shale carcass seasoning 9 hours;
6. sintering
By putting into kiln through the shale carcass of engobe decorating, carry out sintering, sintering time 7 hours, 1050 ℃ of temperature, sintering atmosphere is oxidizing atmosphere, shale carcass forms goods through sintering; Shale carcass in goods and the fusion of engobe decorating layer are integrated, and products appearance color is engobe decorating layer color, surface smoothing;
7. glazing
Get standby finished product transparent, concentration is adjusted to 29 degree Beaume; The glaze mode of soaking that adopts ceramic routine, goods soak glaze 5 seconds, through soaking the goods seasoning 6 hours of glaze;
8. burn till
By putting into kiln through the goods of glazing, burn till, 1120 ℃ of firing temperatures, firing time 6 hours, firing atmosphere is oxidizing atmosphere, makes product.The product colour of making is soft, and texture is good, and job efficiency reaches 99%.
Comparative example 1: different from embodiment, adopt conventional ceramic raw materials formulation (kaolin, feldspar, quartz are main raw material) to make shale carcass as blank, make the product of comparative example 1.The products material cost of comparative example 1 is high, and cracking phenomena appears in shale carcass and cosmetic soil layer when sintering.
Comparative example 2: different from embodiment, the engobe decorating layer thickness of product surface is only 10mm, makes the product of comparative example 2.The opacifying power of the product cosmetic soil ornament layer of comparative example 2 is poor, can see the red pottery matter color of carcass through sintered products surface, affects attractive in appearance.
Comparative example 3: different from embodiment, the engobe decorating of shale carcass inner chamber only adopts once whitewashing, makes the product of comparative example 3.The not enough 12mm of product cosmetic soil decorative layer thickness of comparative example 3, opacifying power is poor.
Comparative example 4: different from embodiment, shale carcass, after engobe decorating, without sintering, burns till after directly using transparent, makes the product of comparative example 4.The product glaze low in glossiness of comparative example 4, there is large quantity micropore in glaze.
Comparative example 5: different from embodiment, in cosmetic soil composition of raw materials, potassium felspar sand and albite add-on respectively reduce half, reduces part and replaces with clay, makes the product of comparative example 5.The product of comparative example 5 is when sintering, and engobe decorating layer ftractures.