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Mullite based ceramic welding material

A technology of ceramic welding material and mullite, which is applied in the field of glass kiln repair, can solve the problems affecting the working life of the kiln, the damage of the inner wall of the kiln, and the quality impact of welding repair, so as to improve the controllability and welding repair Quality, Accessibility, Inexpensive Results

Active Publication Date: 2019-09-13
武汉重远炉窑工程技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The high-temperature kiln is made of refractory bricks and can withstand high temperatures. However, during use, the friction and collision of the product, the sharp change in temperature, and even the difference in acidity and alkalinity between the product and the refractory brick will cause the inner wall of the kiln to In order to improve the service life of the coke oven and avoid the shutdown of the coke oven as much as possible, it is necessary to carry out hot repair
[0003] At present, the commonly used hot repair methods mainly include welding repair and wet repair. Wet repair is relatively simple, but the main application scenario is the outer wall of the kiln. Similar to the metal welding process, refractory powder is used to repair the damaged part of the kiln by physical melting. The melting process will also be accompanied by violent chemical reactions and even produce a lot of smoke. For the welding repair inside the kiln If a large amount of smoke blocks the line of sight, it will affect the quality of welding repairs, thereby affecting the working life of the kiln

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 2g of metal aluminum powder, 13.2g of fused corundum sand with a particle size of 0.5-0.3mm, 31.2g of fused corundum sand with a particle size of 0.3-0.2mm, 12g of fused corundum sand with a particle size of 0.2-0.088mm, 3.6g of fused corundum sand with a particle size of less than 0.088mm, 15g of mullite sand, 13g of black silicon carbide sand, 6g of titanium sponge and 4g of boron nitride were uniformly mixed to obtain the first mullite ceramic welding filler.

Embodiment 2

[0031] 15g of metal aluminum powder, 26.6g of fused corundum sand with a particle size of 0.5-0.3mm, 24.5g of fused corundum sand with a particle size of 0.3-0.2mm, and 17.5g of fused corundum sand with a particle size of 0.2-0.088mm 1.4g of fused corundum sand with particle size below 0.088mm, 4g of mullite sand, 9g of black silicon carbide sand, 1g of titanium sponge and 1g of boron nitride were uniformly mixed to obtain a second mullite ceramic welding filler material.

Embodiment 3

[0033] 10g of metal aluminum powder, 15g of fused corundum sand with a particle size of 0.5-0.3mm, 23.5g of fused corundum sand with a particle size of 0.3-0.2mm, 7.5g of fused corundum sand with a particle size of 0.2-0.088mm, 4g of fused corundum sand with a particle size below 0.088mm, 11g of burnt gemstone sand, 15g of black silicon carbide sand, 8g of titanium sponge and 6g of boron nitride were evenly mixed to obtain a third mullite ceramic welding filler.

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Abstract

The invention brings forward a mullite based ceramic welding material. Raw materials of the mullite based ceramic welding material comprise metal aluminum powder, alumina particles, mullite sand, black silicon carbide sand, titanium sponge and boron nitride, wherein the purity of metal aluminum powder is no less than 99%; the alumina particles are fused pulverized corundum; granularity of the black silicon carbide sand is 0.5-0.2 mm; and purity of titanium sponge is no less than 99.7%. The mullite based ceramic welding material of the invention can greatly reduce smog generatd during the welding repair process and improve welding repair quality, can greatly enhance mechanical strength of welding repair parts, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of glass kiln repair, in particular to a mullite ceramic welding repair material. Background technique [0002] The high-temperature kiln is made of refractory bricks and can withstand high temperatures. However, during use, the friction and collision of the product, the sharp change in temperature, and even the difference in acidity and alkalinity between the product and the refractory brick will cause the inner wall of the kiln to In order to improve the service life of the coke oven and avoid the shutdown of the coke oven as much as possible, it is necessary to carry out thermal repair. [0003] At present, the commonly used hot repair methods mainly include welding repair and wet repair. Wet repair is relatively simple, but the main application scenario is the outer wall of the kiln. Similar to the metal welding process, refractory powder is used to repair the damaged part of the kiln by physical meltin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3217C04B2235/3418C04B2235/3463C04B2235/386C04B2235/402C04B2235/5216C04B2235/9607
Inventor 任重周峰李乐华刘磊刘路军
Owner 武汉重远炉窑工程技术服务有限公司