High-heat resistance shock resistant mullite bearing burning plate and preparation thereof

A technology of mullite and thermal shock resistance, applied in the field of refractory materials, can solve the problems of poor thermal shock stability and short service life, and achieve stable performance, long service life and good electrical performance

Inactive Publication Date: 2009-07-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome some disadvantages of existing setters such as poor thermal shock stability and short service life, th...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Raw material formula mass percentage:

[0033] Andalusite particles 1~1.5mm 20%,

[0034] Andalusite particles 0.5 ~ 1mm 10%,

[0035] Andalusite particles <0.5mm 5%,

[0036] Plate-shaped corundum particles 0.5-1mm 15%,

[0037] Tabular alumina particles <0.5mm 10%,

[0038] Fused mullite particles 0.5~1mm 10%,

[0039] Sillimanite 8%,

[0040] α-Al 2 o 3 Powder 16%,

[0041] Microsilica 2%,

[0042] Clay 4%,

[0043] Aluminum fluoride added is 5% of the total amount,

[0044] The added binder yellow dextrin solution is 4% of the total amount.

[0045] Preparation process: (1) sillimanite, α-Al 2 o 3 Powder, silica powder, clay, and aluminum fluoride are mixed in a ball mill for 2 hours according to the ratio; (2) Andalusite raw material particles are subjected to electromagnetic iron removal, and sieved into 1-1.5mm, 0.5-1mm and less than 0.5mm (3) Mix andalusite particles, tabular corundum particles and mullite particles in a mixer according to the raw ...

Embodiment 2

[0047] Raw material formula mass percentage:

[0048] Andalusite particles 1 ~ 1.5mm 18%,

[0049] Andalusite particles 0.5 ~ 1mm 7%,

[0050] Andalusite particles <0.5mm 5%,

[0051] Plate-shaped corundum particles 0.5-1mm 15%,

[0052] Tabular alumina particles <0.5mm 10%,

[0053] Fused mullite particles 0.5~1mm 10%,

[0054] sillimanite 12%,

[0055] α-Al 2 o 3 Powder 17%,

[0056] Microsilica 3%,

[0057] Clay 3%,

[0058] Add aluminum fluoride as 8% of the total amount,

[0059] The added binder yellow dextrin solution is 3% of the total amount.

[0060] Preparation process: (1) sillimanite, α-Al 2 o 3 powder, silicon micropowder, clay, and aluminum fluoride were mixed in a ball mill for 1 hour according to the ratio; (3) Mix andalusite particles, tabular corundum particles and mullite particles in a mixer according to the raw material ratio, then add the binder and stir, and then add the powder mixed uniformly in the ball mill and stir evenly; (4 ) seal the...

Embodiment 3

[0062] Raw material formula mass percentage:

[0063] Andalusite particles 1~1.5mm 23%,

[0064] Andalusite particles 0.5 ~ 1mm 5%,

[0065] Andalusite particles <0.5mm 4%,

[0066] Tabular corundum particles 0.5-1mm 12%,

[0067] Tabular alumina particles <0.5mm 8%,

[0068] Fused mullite particles 0.5~1mm 15%,

[0069] Sillimanite 8%,

[0070] α-Al 2 o 3 Powder 20%,

[0071] Microsilica 2%,

[0072] Clay 3%,

[0073] Aluminum fluoride added is 5% of the total amount,

[0074] The added binder yellow dextrin solution is 4% of the total amount.

[0075] Preparation process: (1) sillimanite, α-Al 2 o 3 powder, silica powder, clay, and aluminum fluoride are mixed in a ball mill for 1.5 hours according to the ratio; (2) andalusite raw material particles are subjected to electromagnetic iron removal, and the sieves are 1-1.5mm, 0.5-1mm and less than 0.5mm (3) Mix andalusite particles, tabular corundum particles and mullite particles in a mixer according to the ratio ...

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Abstract

The invention discloses a mullite setter plate with high thermal shock resistance and a preparation method thereof. The preparation method comprises the following steps: mixing sillimanite, alpha-Al2O3 powder, micro-silicon powder, clay and aluminum fluoride in a ball mill according to mass percentages; then evenly mixing andalusite particles, sheet-like corundum particles and mullite particles in a mixer based on mass percentages, adding a binding agent yellow dextrin solution for stirring, and then adding powder evenly mixed in the ball mill for even stirring, sealing material package, and shock shaping by double-surface pressurization on a shock press, and obtaining the mullite setter plate by high-temperature burning. The setter plate prepared in the high-temperature mullitization process by adopting andalusite aggregate and the sillimanite has the advantages of good stability and high strength of thermal shock resistance, good temperature resistance, long service life, simple preparation process and low cost, and is suitable for mass production; and when high-grade electronic components are calcined by the setter plate, the setter plate has stable performance, the sintered electronic components have higher yields and better electrical property.

Description

technical field [0001] The invention relates to refractory material technology, in particular to a mullite setter with high thermal shock resistance and a preparation method thereof. Background technique [0002] The firing plate is the carrier for sintering electronic components. Its quality and performance have a direct impact on the quality, output, energy consumption, and cost of fired products. During use, the setter plate not only has to withstand the high temperature sintering temperature of electronic components and the pressure brought by the setter product, but also has to withstand repeated cold and heat cycles. Therefore, it is required to have high temperature resistance, high mechanical strength, stable chemical properties, and heat resistance. Good vibration stability and long service life. The setter plate made of silicon carbide is easy to oxidize under high temperature conditions, and it is easy to react with the setter product, and its high temperature ch...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 王家邦王立旺
Owner ZHEJIANG UNIV
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