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Glazing method for reducing glaze shrinkage defects on ceramic surfaces

A ceramic surface and glaze shrinkage technology, which is applied in the field of ceramic glazes, can solve the problems of color transition stacking glaze, glaze shrinkage, and high cost, and achieve the effects of improving product quality, eliminating wavy patterns, and good thermal stability

Active Publication Date: 2020-01-10
界首市伟盛古窑彩陶制作发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the continuous improvement of people's living standards, the diversification of people's aesthetic concepts and individualized needs have become increasingly prominent, and the decorative diversification and artistic demands for ceramic products are also increasing. As a traditional Chinese ceramic industry, the glaze decoration design is monotonous and the production process The operation requirements are complex, multi-color glazes are not easy to operate on the same product, and the work efficiency is low, the cost is high, the product appearance decoration effect is jerky and dull, lack of natural and smooth design requirements, prone to glaze shrinkage, color Many defects such as dirty, color transition stacked glaze, color difference, thin glaze, etc. have seriously affected the artistic effect of ceramic products, and also seriously restricted the research and development, promotion and application of ceramic products, and also hindered the development and growth of enterprises and industries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A glazing method for reducing glaze shrinkage defects on the surface of ceramics, the specific process steps are as follows:

[0022]1) Mix and grind magnesia fine powder, alumina fine powder, chromium oxide fine powder, titanium oxide and the raw materials of the ceramic body, pass through a 200-mesh sieve, then add 1.5 times the total amount of water and stir evenly to form a ceramic slurry, and then pass through a ball mill After continuous ball milling, aging, then grouting molding, drying and demoulding, and firing at 800°C for 5 hours to obtain a ceramic green body;

[0023] 2) Weigh molybdenum silicide, tantalum silicide, glass powder and silicon boride according to the mass ratio of 25:12:10:1, put them into a ball mill jar, add ethanol and carboxymethyl cellulose, and use 400r / min Mix the ball mill at a rotating speed for 10 hours, and then evenly coat the obtained slurry on the surface of the ceramic embryo. Put the body into a calcination furnace heated to 1...

Embodiment 2

[0034] A glazing method for reducing glaze shrinkage defects on the surface of ceramics, the specific process steps are as follows:

[0035] 1) Mix and grind magnesia fine powder, alumina fine powder, chromium oxide fine powder, titanium oxide and the raw materials of the ceramic body, pass through a 200-mesh sieve, then add 0.8 times the total amount of water and stir evenly to form a ceramic slurry, and then pass through a ball mill After continuous ball milling, aging, then grouting molding, drying and demoulding, and firing at 900°C for 4 hours to obtain a ceramic green body;

[0036] 2) Weigh molybdenum silicide, tantalum silicide, glass powder and silicon boride according to the mass ratio of 28:13:12:1, put them into a ball mill jar, add ethanol and carboxymethyl cellulose, and use 450r / min Mix and ball mill at a rotating speed for 8 hours, and then evenly coat the obtained slurry on the surface of the ceramic body. After coating evenly, place it in a constant temperatu...

Embodiment 3

[0047] A glazing method for reducing glaze shrinkage defects on the surface of ceramics, the specific process steps are as follows:

[0048] 1) Mix and grind magnesia fine powder, alumina fine powder, chromium oxide fine powder, titanium oxide and the raw materials of the ceramic body and pass through a 200-mesh sieve, then add 2 times the total amount of water and stir evenly to form a ceramic slurry, and then pass through a ball mill After continuous ball milling, aging, then grouting, drying and demoulding, and firing at 1000°C for 3 hours to obtain a ceramic green body;

[0049] 2) Weigh molybdenum silicide, tantalum silicide, glass powder and silicon boride according to the mass ratio of 30:15:13:1, put them into a ball mill jar, add ethanol and carboxymethyl cellulose, and use 500r / min Rotating speed mixing ball milling for 6 hours, and then uniformly coating the obtained slurry on the surface of the ceramic body, drying in a constant temperature oven at 60°C for 10 hour...

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Abstract

The invention discloses a glazing method for reducing glaze shrinkage defects on ceramic surfaces. The glazing method comprises the following steps: 1) mixing magnesia, aluminum oxide, chromium oxide,titanium oxide and ceramic blank raw materials, grinding, and carrying out slip casting to obtain ceramic blanks; 2) coating a slurry obtained by ball-milling molybdenum silicide, tantalum silicide,glass powder, silicon boride, ethanol and carboxymethyl cellulose on the surfaces of the ceramic blanks, drying and then carrying out heat treatment; 3) immersing the ceramic blanks into a nano iron oxide dispersion liquid, taking out the ceramic blanks, and irradiating the ceramic blanksby using an ultraviolet lamp; and 4) spraying a glaze on the surfaces of the ceramic blanks for glaze sintering. According to the invention, conventional ceramic blank raw materials and glaze are improved; the surfaces of the green bodies are treated, so that sintered glaze surfaces are uniform in corrugation,high in glossiness and good in thermal stability, meanwhile, the defects of wavy lines, cracks, pinholes, even deglazing and the like of the glaze surfaces can be well eliminated, the integrity of the glaze surfaces is improved, and the product quality is obviously improved.

Description

technical field [0001] The invention belongs to the technical field of ceramic glazes, and in particular relates to a glazing method for reducing glaze shrinkage defects on the surface of ceramics. Background technique [0002] Enamel, also known as ceramic glaze, is a colorless or colored glassy thin layer covering the surface of ceramic products. Glaze is one of the important contents of ancient Chinese porcelain identification. The essence of glaze is the continuous glass quality attached to the surface of the porcelain body. Some special glazes are the mixed layer of glass and crystal, which have similar physical and chemical properties to glass. [0003] Due to the continuous improvement of people's living standards, the diversification of people's aesthetic concepts and individualized needs have become increasingly prominent, and the decorative diversification and artistic demands for ceramic products are also increasing. As a traditional Chinese ceramic industry, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/89C04B35/057C04B35/622C03C8/00
CPCC03C8/00C04B35/057C04B35/622C04B41/52C04B41/89C04B2235/3206C04B2235/3217C04B2235/3232C04B2235/3241C04B2235/3454C04B2235/3472C04B2235/349C04B2235/5436C04B2235/656C04B2235/6567C04B41/5071C04B41/507C04B41/5022C04B41/4582C04B41/455C04B41/0072C04B41/5036C04B41/4539
Inventor 郭艳张腾飞张海涛郭平郭坤
Owner 界首市伟盛古窑彩陶制作发展有限公司
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