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High-wear-resistance low-electrostatic SiC (silicon carbide) ceramic panel for paper machine and method for producing high-wear-resistance low-electrostatic SiC ceramic panel for paper machine

A technology with high wear resistance and low static electricity, applied in the paper machine, paper machine, wet end of paper machine, etc., can solve the problem of not fully considering scratches and damage, achieve a simple and reasonable preparation method, and reduce the probability and density of adsorbing impurity particles. improved effect

Inactive Publication Date: 2014-12-10
淄博爱普浆纸科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned technologies all take into account the wear resistance of the dehydration parts, but do not fully consider the scratches on the polyester net caused by the electrostatic adsorption particles of the polyester net and the damage caused by wear and tear.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The high wear-resistant and low-static SiC ceramic panel for the paper machine of the present invention is made by assembling SiC ceramic blocks using a frame, and each SiC ceramic block is connected with a wire in turn, wherein the SiC ceramic block is prepared according to the following method:

[0028] Silicon carbide powder, metal silicon powder, carbon powder, rare earth material Y 2 o 3 Mix according to the following ratio: silicon carbide powder 80%, metal silicon powder 13%, carbon powder 5%, calcium silicate 1% and rare earth material Y 2 o 3 1%, make slurry according to the usual process, and use the grouting molding process to make the ceramic green body; put the ceramic green body into the vacuum reaction sintering furnace, and vacuumize it during the sintering process, and the vacuum degree reaches 4×10 -1 Pa, through high-temperature sintering at 1650°C to obtain high wear-resistant and low-static SiC ceramics for paper machines, with a resistivity of 0....

Embodiment 2

[0031] The high wear-resistant and low-static SiC ceramic panel for the paper machine of the present invention is made by assembling SiC ceramic blocks using a frame, and each SiC ceramic block is connected with a wire in turn, wherein the SiC ceramic block is prepared according to the following method:

[0032] Silicon carbide powder, metal silicon powder, carbon powder, rare earth material Y 2 o 3 Mix according to the following ratio: silicon carbide powder 81%, metal silicon powder 10%, carbon powder 5%, calcium silicate 2% and rare earth material Y 2 o 3 2%, add paraffin to heat and mix, use ceramic injection molding machine to make ceramic green bodies of several shapes according to the following technical parameters: material cylinder temperature 110 ℃, nozzle temperature 100 ℃, forming pressure 3MPa, injection time 6 seconds, keep The pressing time is 30 seconds, and the mold temperature is 35°C. Put the ceramic green body into the vacuum reaction sintering furnace, ...

Embodiment 3

[0035] The high wear-resistant and low-static SiC ceramic panel for the paper machine of the present invention is made by assembling SiC ceramic blocks using a frame, and each SiC ceramic block is connected with a wire in turn, wherein the SiC ceramic block is prepared according to the following method:

[0036] Silicon carbide powder, metal silicon powder, carbon powder, rare earth material Y 2 o 3 Mix according to the following ratio: silicon carbide powder 83%, metal silicon powder 10%, carbon powder 3%, calcium silicate 3% and rare earth material Y 2 o 3 1%, make slurry according to the usual process of ceramic preparation and grouting molding, and use the grouting molding process to make ceramic green bodies; put the ceramic green bodies into a vacuum reaction sintering furnace, and vacuumize during the sintering process, and the vacuum degree reaches 4× 10 -1Below Pa, after sintering at a high temperature of 1700°C, a high wear-resistant and low-static SiC ceramic pan...

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PUM

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Abstract

The invention relates to a high-wear-resistance low-electrostatic SiC (silicon carbide) ceramic panel for a paper machine, which belongs to the technical field of paper machine accessories and is made by assembling SiC ceramic blocks with a frame. The SiC ceramic blocks are connected with one another through leads, and each SiC ceramic block is made by ingredient preparation, forming, sintering, cooling and processing and includes, in weight percentage, 75-85% of silicon carbide, 8-15% of silicon powder, 5-10% of carbon powder, 1-3% of calcium silicate and the balance rare earth materials. The SiC ceramic panel is conductive and has resistivity lower than 0.3 omega m. The SiC ceramic panel is high in density, low in porosity, high in wear resistance, conductive, and capable of statically absorbing particles and eliminating scratches of a polyester wire mesh by the particles, so that the service life of the polyester wire mesh is prolonged, stoppage and maintenance time is reduced, materials are saved, and consumption is lowered. The invention further provides a simple and reasonable production method.

Description

technical field [0001] The invention relates to a highly wear-resistant and low-static SiC ceramic panel for a paper machine and a preparation method thereof, belonging to the technical field of paper machine accessories. technical background [0002] In the process from pulping to papermaking, the paper machine uses a polyester net for long-distance transmission. The pulp is gradually dehydrated on the polyester net to form paper, and the polyester net must use dehydration support parts due to the long distance. Dewatering components not only determine the quality of paper forming, but also affect the service life of the forming wire and the economic benefits of the paper mill. Therefore, the choice of dehydration element material is very important. Taking the dehydration plate as an example, the panel material has developed from ultra-high molecular high-density polyethylene to various wear-resistant ceramics, and the structural form has developed from an embedded ceramic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F1/10B28B1/24C04B35/565C04B35/622
Inventor 孟兆锁张景德石汝军孟懿晨陈克玲
Owner 淄博爱普浆纸科技有限公司