Volume-stable high-temperature bedplate and manufacturing method thereof

A technology with stable volume and high temperature, applied in the field of refractory kiln furniture preparation, can solve the problems of reduced service life, increased size, large expansion coefficient, etc., to achieve the effect of improving high temperature strength and high temperature thermal shock resistance, and ensuring volume stability

Active Publication Date: 2020-04-10
江苏三恒高技术窑具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent has good thermal shock resistance and high temperature strength, but after long-term use, because the material composition of the push plate has a large linear expansion coefficient, the pushing surface of the push plate is prone to large changes due to force extrusion, and the size increases , may reduce the service life, and even affect the safe and smooth operation of the kiln

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A volume-stable high-temperature platen, the mass percentage of each component raw material is: sintered corundum 1~3mm 40%, fused mullite particles 0.3~1mm 14%, α-alumina powder ≤0.045 mm 15%, Fused mullite powder ≤0.045mm10%, aluminum titanate powder ≤0.063mm 14%, silica powder ≤0.045mm 2%, kaolin ≤0.063mm 5%. First, fused mullite powder, aluminum titanate powder, and silicon dioxide powder are ball milled on a ball mill according to the ratio plus 0.1% polyvinyl alcohol aqueous solution for about 8 hours to form a slurry, then dry powder is granulated, and then used; Sintered corundum, fused mullite particles, α-alumina micropowder, and kaolin are added to the V-type mixer according to the mass percentage, and then the granulated material is added to the mixer and mixed evenly for about 24 hours, sealed and trapped for 30-48 Hours; it is made by pressure forming on a large-tonnage press, segmented drying, and then high-temperature firing process. After being tried in...

Embodiment 2

[0020] A volume-stable high-temperature platen. The mass percentages of the raw materials of each component are: sintered corundum 1~3mm 30%, fused mullite particles 0.3~1mm 10%, α-alumina powder ≤0.045 mm 17%, Fused mullite powder ≤0.045mm 15%, aluminum titanate powder ≤0.063mm 12%, silica powder ≤0.045mm 6%, kaolin ≤0.063mm 10%. First, fused mullite powder, aluminum titanate powder, and silicon dioxide powder are ball milled on a ball mill according to the ratio plus 0.1% polyvinyl alcohol aqueous solution for about 8 hours to form a slurry, then dry powder is granulated, and then used; Sintered corundum, fused mullite particles, α-alumina powder, and kaolin are added to the V-type mixer according to the mass percentage, and then the granulated material is added to the mixer and mixed evenly for about 24 hours, sealed and trapped for 30-48 Hours; it is made by pressure forming on a large-tonnage press, segmented drying, and then high-temperature firing process. After being t...

Embodiment 3

[0022] A volume-stable high-temperature platen, the mass percentage of each component raw material is: sintered corundum 1~3mm 32%, fused mullite particles 0.3~1mm 12%, α-alumina powder ≤0.045 mm 16%, Fused mullite powder ≤0.045mm20%, aluminum titanate powder ≤0.063mm 10%, silica powder ≤0.045mm 4%, kaolin ≤0.063mm 6%. First, fused mullite powder, aluminum titanate powder, and silicon dioxide powder are ball milled on a ball mill according to the ratio plus 0.1% polyvinyl alcohol aqueous solution for about 8 hours to form a slurry, then dry powder is granulated, and then used; Sintered corundum, fused mullite particles, α-alumina micropowder, and kaolin are added to the V-type mixer according to the mass percentage, and then the granulated material is added to the mixer and mixed evenly for about 24 hours, sealed and trapped for 30-48 Hours; it is made by pressure forming on a large-tonnage press, segmented drying, and then high-temperature firing process. After being tried in...

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PUM

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Abstract

The invention discloses a volume-stable high-temperature bedplate, belonging to the field of refractory kiln furniture preparation. According to the invention, sintered corundum and fused mullite particles are used as aggregates, and an aluminum titanate composite phase material is introduced into a matrix, and sintering at a high temperature is carried out to obtain the bedplate; and the preparedbedplate can meet the requirements for high-temperature strength and good thermal shock resistance on the bedplate in use and is obviously improved in volume stability, and the size change of the bedplate in an advancing direction is less than or equal to 0.5% after long-time circulation in a use environment.

Description

Technical field [0001] The invention belongs to the field of preparation of refractory kiln furniture, in particular to a volume-stable high-temperature platen, and provides a method for manufacturing the volume-stable high-temperature platen. Background technique [0002] The platen, also known as the push plate or the move-in plate, is the key component of the push plate kiln carrying the product to move forward. It not only needs to meet the high temperature atmosphere conditions of sintering, but also requires the thin platen (generally only 30mm thick) to bear 20-30kg / Plate pressure, and the long-distance (about 30M) push force of the burned product, withstand the constant change of high and low temperature caused by the long-term cycle from room temperature to high temperature to room temperature (cycle once every 20-30h (in the furnace)), Have a long service life. As long as one of the push plates is broken, dropped, stuck, or deformed during use, it will cause a major ...

Claims

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Application Information

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IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3234C04B2235/3418C04B2235/3463C04B2235/349
Inventor 王立平王理达
Owner 江苏三恒高技术窑具有限公司
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