CN112428397A

CN112428397A - Manufacturing process of ceramic plastic

Info

Publication number: CN112428397A
Application number: CN202011437171.2A
Authority: CN
Inventors: 李志鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-03-02

Abstract

The invention relates to a manufacturing process of ceramic plastic, which comprises the following steps: slurry mixing, slurry strip rubbing, dehairing and slurry hanging, slurry piling, shaping and firing: placing the ceramic plastic subjected to shade drying treatment in a kiln, placing the ceramic plastic in the kiln, heating to 50 ℃, uniformly heating for 200min, heating the temperature from 50 ℃ to 100 ℃, uniformly heating for 200min to heat the temperature from 100 ℃ to 200 ℃, uniformly heating for 260min to heat the temperature from 200 ℃ to 1000 ℃, uniformly heating for 30min to heat the temperature from 1000 ℃ to 1120 ℃, uniformly heating for 30min to heat the temperature from 1120 ℃ to 1155 ℃, and finally preserving heat for 20min to obtain a final product; the process solves the problem that various patterns are piled and molded by Rongchang pottery clay outside the biscuit, and the pattern cracking on the Rongchang pottery piled and molded product is reduced.

Description

Manufacturing process of ceramic plastic

Technical Field

The invention belongs to the technical field of ceramic plastics, and particularly relates to a manufacturing process of ceramic plastics.

Background

The raw material of Rongchang pottery plastic, commonly called Rongchang pottery clay, adopts a pottery clay mineral belt with a length of 25 km and a width of 2.5-4.5 km in the Anfu environment, the average thickness is 1.2 m, the total storage amount of pottery clay is 1.1 hundred million tons, and the clay color is red and white. The clay has fine texture and large shrinkage ratio which is generally about 20 percent, and the Rongchang pottery clay is known as 'clay essence', is a high-quality raw material for producing various exquisite process ceramics, can be added with no auxiliary material, and is naturally divided into red clay and white clay.

At present, Rongchang pottery moulds are made by carving patterns on the outer surface of a biscuit and then firing the rough blank, so that the product effect is good, and at present, in order to develop Rongchang pottery mould products, various patterns are piled and molded by Rongchang pottery clay on the outer surface of the biscuit, and in the firing process, the products have large and small cracks, so that the product percent of pass is influenced.

Disclosure of Invention

The invention provides a manufacturing process of ceramic plastic for solving the technical problems.

The technical scheme for solving the technical problems is as follows: a manufacturing process of ceramic plastic comprises the following steps:

A. slurry mixing: mixing the clay with water to prepare slurry;

B. kneading mud strips: taking clay, twisting strips, dipping the clay in the slurry obtained in the step A, and placing the obtained strips on a green tea pot blank for coiling, pressing and thinning;

C. scraping hair and hanging mud: scraping hair at the vacant position on the surface of the tea pot biscuit, controlling the hair scraping depth to be 0.2-0.3mm, lightly paving the slurry in the step A in the transverse direction in the hair scraping area on the outer surface of the tea pot biscuit, and then lightly paving the slurry in the step A in the longitudinal direction, wherein the slurry lightly paved in the two directions are mutually crossed without leaving a gap;

D. piling mud and repairing: lightly stacking and molding a small amount of clay on the outer surface of the tea pot biscuit by using a sculpture tool, performing modeling according to different patterns according to the requirements of drawing lines, stacking the clay, shaping and pressing the clay strips of the works, spraying water on the whole body of the tea pot biscuit every 15-30 min to ensure that the surface humidity of the tea pot biscuit is 90-99%, and then repeatedly performing detail shaping until the step is completed;

E. drying in the shade: wrapping the prepared ceramic green body with a plastic bag, and naturally drying in the shade;

F. firing: the pottery teapot after the drying in the shade is placed in a kiln, and the temperature control process in the kiln comprises the following steps: putting the ceramic plastic into a kiln to be heated to 50 ℃, then uniformly heating for 200min, raising the temperature from 50 ℃ to 100 ℃, then uniformly heating for 200min, raising the temperature from 100 ℃ to 200 ℃, then uniformly heating for 260min, raising the temperature from 200 ℃ to 1000 ℃, then uniformly heating for 30min, raising the temperature from 1000 ℃ to 1120 ℃, then uniformly heating for 30min, raising the temperature from 1120 ℃ to 1155 ℃, and finally preserving the heat for 20min to obtain the final product.

The invention has the beneficial effects that: the process solves the problems that various patterns are piled and molded by secondary Rongchang pottery mud outside a biscuit, and the patterns on Rongchang pottery piled and molded products are cracked in the firing process, solves the problems of single decoration technique and single product variety in the Rongchang pottery manual art pottery market, and enriches the cultural characteristics of the Rongchang pottery.

Detailed Description

The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.

Examples

A manufacturing process of teapot pottery plastic comprises the following steps:

A. slurry mixing: the ceramic clay is uniformly mixed with water to prepare slurry with the water content of 90-99.9%, the slurry does not need to keep the dry and wet degree, the slurry is only used when the slurry is piled on the original green body of the teapot ceramic plastic, and the dry and wet degree of the slurry does not need to be adjusted in the process as long as the slurry is prepared;

B. marking and shaving: drawing the shape of lotus leaf with a sharp needle, and shaving hair on the lotus leaf-drawn figure on the surface of the biscuit with a sawtooth edge tool, wherein the depth of a groove for shaving hair is controlled to be 0.2-0.3 mm;

C. mud rubbing strips (the length and the thickness are uniform, the mud rubbing strip time is controlled between 30 and 50 seconds, the water content is kept between 93.3 and 99.9 percent, and the mud strips can be dried and broken when the mud strips are coiled for a long time): taking clay, rubbing a long strip, dipping the clay in the slurry obtained in the step A, placing the obtained long strip on a biscuit, and arranging a plate edge, a blank pressing and a fine trimming (when the fine trimming is carried out, a beveled bamboo knife is used for inwards pressing the blank), wherein the thickness of the clay strip is 4 mm, the diameter of the concrete clay strip is 2-4 mm, the probability of cracking is increased, in addition, the thickness of the clay strip is uniform, and the humidity is close to the humidity of a teapot blank (the moisture is kept between 90 and 99.9 percent);

D. slurry hanging: and C, lightly paving the slurry in the step A transversely in a hair scraping area on the outer surface of the biscuit, and lightly paving the slurry in the step A longitudinally, wherein the lightly paved slurries are mutually crossed without leaving a gap. The blank is shaved with a serrated tool (e.g. steel saw teeth, shaving depth of 0.1-0.3 mm). In addition, the thickness of the slurry spread on the surface of the kettle body is uniform (the thickness of the slurry spread is 0.3-1.3 mm), the slurry adheres to the surface of the kettle body so as to enable the mud piled in the later period to be better adhered to the surface of the teapot blank, meanwhile, the patterns piled for plastic molding are effectively prevented from cracking and falling off in the firing process, the slurry can be integrated with the mud humidity of the teapot blank and the mud piled in the later period to be molded (the slurry can play the role of integrating the dry humidity in the middle), and the slurry is poured: the slurry is paved on the positions where the ceramic patterns need to be manufactured.

E. Piling mud and repairing: using a willow leaf-shaped sculpture tool to draw the vein shape of the leaves, lightly pressing a small amount of clay on the surface between the veins in a rotary feed mode (the thickness of the added clay is 0.1-0.5 mm), spraying water to the whole body of the blank body every 15-30 min, and then repeatedly carrying out detail finishing;

F. vein treatment of lotus leaves: taking mud, twisting into mud strips with equal length (the diameter of the mud strips is 1.5-2 mm) according to the length of the drawn leaf vein, spraying water for moisturizing, sticking the mud on one side of the mud strips and on the veins marked with the marks, using an oblique bamboo knife to unidirectionally compact one side of the mud paved on the surface, slowly finishing, and spraying water for moisturizing;

G. treating the surface texture: trimming the surface of the connection part of the compacted leaf surface and the vein by using a round flat-mouth cutter (injecting slurry to be spread next to a cutter for continuous section gathering), and spraying water to the whole body of the blank body once every 15-30 min;

H. drying in the shade: the finished ceramic-plastic product is wrapped by a plastic bag (the plastic bag is thin, the blank body is slowly evaporated and can be uniformly evaporated), and the ceramic-plastic product is placed in a shade place to be naturally dried in the shade for 1-60 days, so that the problem that mud on the piled plastic and the original blank body are cracked due to uneven shrinkage in the drying process is effectively solved. The small space can keep the relative balance of humidity, the evaporation is slow, and the simultaneous shrinkage of the blank and the pattern part can be ensured. The work is placed in the plastic bag to be sealed, the whole work is located in a sealed small space, the material of the plastic bag enables water evaporated in the work drying process to be discharged as soon as possible, the work can stay around the work, the part with patterns is protruded in a three-dimensional mode, if the finished work is directly placed in the air to be piled, the pattern part on the plastic is easy to dry first, in this time, the tea pot blank is dried slowly due to the fact that the inner seal is slow, in the process, the patterns on the plastic pile and the blank are cracked due to the fact that the patterns on the plastic pile and the blank are not uniformly shrunk quickly and quickly, and the effect of balanced evaporation can be achieved by sealing in the plastic bag. (the moisture evaporated from the blank can also be combined with the moisture of the patterns, the pug can shrink in the process of moisture evaporation during drying, the faster the drying is, the slower the drying is, and the drying can shrink at the same time, so that the cracking condition is reduced);

I. firing: placing the ceramic plastic subjected to shade drying treatment in a kiln, wherein the temperature control process in the kiln comprises the following steps: putting the ceramic plastic into a kiln to be heated to 50 ℃, then uniformly heating for 200min, raising the temperature from 50 ℃ to 100 ℃, then uniformly heating for 200min, raising the temperature from 100 ℃ to 200 ℃, then uniformly heating for 260min, raising the temperature from 200 ℃ to 1000 ℃, then uniformly heating for 30min, raising the temperature from 1000 ℃ to 1120 ℃, then uniformly heating for 30min, raising the temperature from 1120 ℃ to 1155 ℃, and finally preserving the heat for 20min to obtain the final product.

In the whole manufacturing process of the stacking plastic technique, the green body is required to be sprayed with water for moisturizing, so that the green body is at a relatively proper humidity, mud stacked on the stacking plastic at the later stage is combined with the original green body more tightly, the breakage rate of the product can be reduced only under the condition that the humidity of the mud stacked on the stacking plastic is proper, and the green body is uniformly sprayed once every 15 minutes in the whole manufacturing process, and the humidity is kept at 90-99.9%. The ceramic-plastic decoration technique is a long manufacturing process and needs continuous water spraying for moisture preservation.

The invention patent to be applied is a decoration method manufactured by a plastic stacking technique on the premise of adopting a Rongchang crude ore red mud smooth blank, and the decoration method is characterized in that a three-dimensional pattern is formed by adding mud on the surface of the blank for two times. The method can be applied to any patterns on any vessel, such as various flowers, grass carps, insects, birds and the like.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The manufacturing process of the ceramic plastic is characterized by comprising the following steps:

A. slurry mixing: mixing the clay with water to prepare slurry;