A kind of magnesia high temperature ceramic soldering material

A technology of high-temperature ceramics and welding fillers, which is applied in the field of high-temperature kiln repairs, can solve problems such as poor strength and damage to magnesia refractory bricks, and achieve the effects of strengthening mechanical properties, enhancing cohesion, and good application value

Active Publication Date: 2021-12-24
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

[0003] The melting point of magnesia is very high, up to 2800°C, so magnesia refractory bricks are generally used as refractory bricks with the best refractoriness. However, the high-temperature structural strength of magnesia refractory bricks is poor, and its load softening temperature is around 1500°C. Therefore, compared with the working temperature in the high-temperature kiln, the magnesia refractory brick is extremely vulnerable to damage, and the magnesia refractory brick is an alkaline refractory material, and the use of silicon-based welding fillers for welding repairs should be avoided as much as possible.

Method used

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  • A kind of magnesia high temperature ceramic soldering material
  • A kind of magnesia high temperature ceramic soldering material
  • A kind of magnesia high temperature ceramic soldering material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 10kg of metal aluminum powder, 30kg of metal magnesium powder, 142.5kg of fused magnesia with a particle size of 0.5-0.3mm, 665kg of fused magnesia with a particle size of 0.3-0.2mm, and fused magnesia with a particle size of 0.2-0.088mm. 66.5 kg of fused magnesia, 76 kg of fused magnesia with a particle size below 0.088 mm, 5 g of No. 10 solid pitch, and 5 g of yttrium oxide powder were mixed and stirred evenly to obtain welding filler 1.

Embodiment 2

[0030] Weigh respectively 40kg of metal aluminum powder, 100kg of metal magnesium powder, 240kg of fused magnesia with a particle size of 0.5-0.3mm, 520kg of fused magnesia with a particle size of 0.3-0.2mm, and electric fused magnesia with a particle size of 0.2-0.088mm. 8 kg of fused magnesia, 32 kg of fused magnesia with a particle size below 0.088 mm, 36 g of No. 10 solid pitch, and 24 g of yttrium oxide powder were mixed and stirred evenly to obtain welding filler 2.

Embodiment 3

[0032] Weigh 60kg of metal aluminum powder, 10kg of metal magnesium powder, 180kg of fused magnesia with a particle size of 0.5-0.3mm, 495kg of fused magnesia with a particle size of 0.3-0.2mm, and electric fused magnesia with a particle size of 0.2-0.088mm. 180kg of fused magnesia, 45kg of fused magnesia with a particle size below 0.088mm, 10g of No. 10 solid pitch and 20g of yttrium oxide powder were mixed and stirred evenly to obtain welding filler 3.

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Abstract

The present invention proposes a magnesia high-temperature ceramic welding filling material, the raw materials of the magnesia high-temperature ceramic welding filling material include metal aluminum powder, metal magnesium powder, magnesium oxide and binder, and a sieve of metal aluminum powder and metal magnesium powder The sub-mesh is 200 mesh, and the binder also includes No. 10 solid pitch and yttrium oxide powder. The magnesia high-temperature ceramic welding filler material of the present invention has a good load softening temperature, and can still make the repaired part have good performance under high temperature conditions. Excellent mechanical strength, delaying the speed of high temperature attack, thereby prolonging the service life of the kiln, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of repairing high-temperature kilns, in particular to a magnesia high-temperature ceramic welding repair material. Background technique [0002] Refractory bricks are the basic structural materials in high-temperature kilns. The types of refractory bricks used in different parts of high-temperature kilns are also different, mainly including silicon refractory bricks, zirconium corundum refractory bricks, high-alumina refractory bricks and magnesia refractory bricks. Refractory bricks. [0003] The melting point of magnesia is very high, up to 2800°C, so magnesia refractory bricks are generally used as refractory bricks with the best refractoriness. However, the high-temperature structural strength of magnesia refractory bricks is poor, and its load softening temperature is around 1500°C. Therefore, compared with the working temperature in the high-temperature kiln, magnesia refractory bricks are extremely v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/043C04B35/634C04B35/63
CPCC04B35/043C04B35/63496C04B35/6303C04B2235/401C04B2235/402C04B2235/3225C04B2235/96
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
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