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Blank for mending ceramic paste preforms and preparation method and mending process thereof

A technology for mud and ceramics, which is applied to the field of repairing blanks with ceramic mud, can solve the problems of displacement of mud particles, prone to fracture, secondary cracking, etc., and achieves the effects of eliminating stress concentration, low cost and convenient preparation.

Active Publication Date: 2010-06-02
LIXIL AS SANITARY MFG (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The connection between the barren material particles in the ceramic mud body is provided by the water film formed by absorbing water on the outer surface of the inner particles of the body, and its binding force is weak; moreover, the main bonding material used in the ceramic mud body is plastic clay material , while plastic clay often has a large drying shrinkage and firing shrinkage. During the drying and firing process, the mud particles are easily displaced due to the loss of water from the green body, which makes the originally weak bonding force between the green body particles even stronger. It is easy to break and cause the green body to crack
[0004] The general mud billet repair method is to add the original mud billet to the cracked part of the mud billet and then water compaction. This method only temporarily fills the cracked space of the original mud billet, and does not strengthen the broken particle connection. And the firing process is extremely easy to cause secondary cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Put the porcelain body slurry (65Kg) and glaze slurry (2.7Kg) into the container, put them into a mixer, and turn on the mixer; then add zirconium silicate (1.1Kg) while stirring the slurry; then add waste porcelain in turn Porcelain powder (25Kg), glycerin (0.36Kg), water (0.84Kg), and finally glass fiber (5Kg); keep stirring until all materials are evenly mixed.

[0045] Take the uniformly stirred mud mass, knead it repeatedly on a gypsum plate, absorb water and refine it, until the water content of the mud mass is any value within the range of 25-30%. The ceramic mud blank is obtained for repairing the blank, put into an airtight container, and sealed for use.

Embodiment 2

[0047] Put the porcelain body slurry (60Kg) and glaze slurry (1.7Kg) into the container, put them into a mixer, and turn on the mixer; then add zirconium silicate (0.1Kg) while stirring the slurry; then add waste porcelain in turn Porcelain powder (30Kg), glycerin (0.16Kg), water (1.04Kg), and finally whisker silicon (7Kg); keep stirring until all materials are evenly mixed.

[0048] Take the uniformly stirred mud mass, knead it repeatedly on a gypsum plate, absorb water and refine it, until the water content of the mud mass is any value within the range of 25-30%. The ceramic mud blank is obtained for repairing the blank, put into an airtight container, and sealed for use.

Embodiment 3

[0050] Put the porcelain body slurry (70Kg) and glaze slurry (3.7Kg) into the container, put them into the mixer, and turn on the mixer; then add zirconium silicate (2.1Kg) while stirring the slurry; then add high alumina in sequence Refractory powder (20Kg), glycerin (0.56Kg), water (0.54Kg), and finally glass wool (3.1Kg); keep stirring until all materials are evenly mixed.

[0051] Take the uniformly stirred mud mass, knead it repeatedly on a gypsum plate, absorb water and refine it, until the water content of the mud mass is any value within the range of 25-30%. The ceramic mud blank is obtained for repairing the blank, put into an airtight container, and sealed for use.

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PUM

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Abstract

The invention relates to a blank for mending ceramic paste preforms and a preparation method and a mending process thereof. The blank for mending ceramic paste preforms is characterized by adding netty reinforcement substrates and auxiliary modified materials to original paste blanks, wherein the weight percentage of the netty reinforcement substrates in the blank for mending ceramic paste preforms is 3-10%, and the weight percentage of the auxiliary modified materials is 3-31%. The blank for mending ceramic paste preforms has the advantages of simple formula, convenient preparation and low cost. The process for mending ceramic paste preforms comprises the following steps of: slightly enlarging the cracking part of a ceramic preform to remove the stress concentration at the cracking part of the preform, and filling the blank for mending ceramic paste preforms in the cracking part to change the spatial connection mode among particles of the preform. The mending process has the advantages of simplicity, convenient operation and excellent mending effect, and achieves the technical effects of thoroughly mending the surface of the ceramic preform and effectively avoiding the second cracking phenomena after sintering.

Description

technical field [0001] The invention relates to a ceramic mud base repair blank, its preparation method and repair process. Background technique [0002] There are always many small cracks or defects in actual materials. Under the action of external force, stress concentration is easy to occur near these cracks and defects. When the stress reaches a certain level, the cracks begin to expand and cause fracture. The reason for the formation of these cracks or defects is mainly that there are cracks in the crystal microstructure or the green body forms cracks due to thermal stress during drying. [0003] The connection between the barren material particles in the ceramic mud body is provided by the water film formed by absorbing water on the outer surface of the inner particles of the body, and its binding force is weak; moreover, the main bonding material used in the ceramic mud body is plastic clay material , while plastic clay often has a large drying shrinkage and firing s...

Claims

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Application Information

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IPC IPC(8): C04B35/80C04B41/80
Inventor 胡春林
Owner LIXIL AS SANITARY MFG (SHANGHAI) CO LTD
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