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Preparation method of ceramic wiper plate

A technology for wiper blades and ceramics, which is applied in the field of preparation of ceramic wiper blades, can solve the problems of low hardness of alumina materials, unstable product performance, and uneven seams, so as to achieve precise dimensions and avoid seams Uneven, uniform microstructure effect

Inactive Publication Date: 2013-02-13
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, ceramic wiper blades are mainly produced by alumina grouting molding technology. The disadvantages are that the hardness of alumina material is low, the wear resistance is poor, and the length of a single wiper blade is small (about 10 cm). Uneven seams, low production efficiency, manual operation, large floor area, unstable product performance

Method used

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  • Preparation method of ceramic wiper plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 1. Forming of extrusion molding body

[0012] Mix silicon carbide powder with a particle size of 0.3 μm, graphite powder with a particle size of 0.3 μm, carbon black with a particle size of 0.5 μm, phenolic resin and liquid paraffin in a weight ratio of 30:20:20:20:10 in a vacuum mud mixer The silicon carbide ceramic plastic mud is made by kneading in the medium, and the above mud is extruded and cut into an extruded body.

[0013] 2. Curing:

[0014] The extruded blank was cured at 90° C. for 8 hours to make a ceramic wiper blank.

[0015] 3. Firing:

[0016] The cured ceramic wiper blade body is fired at room temperature to 100°C for 4 hours, at 100 to 300°C for 10 hours, at 300°C for 8 hours, at a firing temperature of 1500°C, and for 4 hours in a nitrogen atmosphere , and then polished to make ceramic wipers.

[0017] The purity of the batching raw materials used in the experiment is industrial pure.

[0018] The compressive strength of the obtained extruded ce...

Embodiment 2

[0020] 1. Forming of extrusion molding body

[0021] Mix silicon carbide powder with a particle size of 0.1 μm, graphite powder with a particle size of 0.5 μm, carbon black with a particle size of 0.3 μm, phenolic resin and liquid paraffin in a weight ratio of 55:11:11:15:8 in a vacuum mud mixer The silicon carbide ceramic plastic mud is made by kneading in the medium, and the above mud is extruded and cut into an extruded body.

[0022] 2. Curing:

[0023] The extruded blank was cured at 70° C. for 9 hours to make a ceramic wiper blank.

[0024] 3. Firing:

[0025] The cured ceramic wiper blade body is fired at room temperature to 100°C for 5 hours, at 100 to 300°C for 13 hours, at 300°C for 10 hours, at a firing temperature of 1800°C, and for 3 hours in a nitrogen atmosphere , and then polished to make ceramic wipers.

[0026] The purity of the batching raw materials used in the experiment is industrial pure.

[0027] The compressive strength of the obtained extruded ce...

Embodiment 3

[0029] 1. Forming of extrusion molding body

[0030] Mix silicon carbide powder with a particle size of 0.5 μm, graphite powder with a particle size of 0.1 μm, carbon black with a particle size of 0.1 μm, phenolic resin and liquid paraffin at a weight ratio of 80:2:3:10:5 in a vacuum mud mixer The silicon carbide ceramic plastic mud is made by kneading in the medium, and the above mud is extruded and cut into an extruded body.

[0031] 2. Curing:

[0032] The extruded green body was cured at 50° C. for 10 hours to make a ceramic wiper blade green body.

[0033] 3. Firing:

[0034] The cured ceramic wiper blade body is fired at room temperature to 100°C for 6 hours, at 100 to 300°C for 16 hours, at 300°C for 12 hours, at a firing temperature of 2000°C, for 2 hours in a nitrogen atmosphere , and then polished to make ceramic wipers.

[0035] The purity of the batching raw materials used in the experiment is industrial pure.

[0036] The compressive strength of the obtained ...

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Abstract

The invention provides a preparation method of a ceramic wiper plate, and comprises the steps of ceramic pug material preparation, moulding, solidification, sintering, and polishing. The method is characterized by consisting of: mixing silicon carbide powder, graphite powder, carbon black, phenolic resin and liquid paraffin, and subjecting the mixture to mulling in a vacuum pug mill so as to prepare a ceramic plastic pug material, conducting extrusion moulding to the ceramic plastic pug material, and cutting the material into an extrusion moulding green body, then carrying out curing to prepare a ceramic wiper plate green body, and performing sintering and polishing, thus obtaining the ceramic wiper plate. The ceramic wiper plate prepared in the invention is used for the papermaking industry, and a single wiper plate is free of splicing seams. Characterized by high surface fineness, great hardness and high strength, the ceramic wiper plate prepared in the invention avoids the defect of uneven splicing seams in ordinary ceramic wiper plates. With high production efficiency, the preparation method of the invention can be used for continuous mass production.

Description

technical field [0001] The invention relates to a method for preparing a ceramic wiper blade, which belongs to the technical field of ceramic preparation. Background technique [0002] At present, ceramic wiper blades are mainly produced by alumina grouting molding technology. The disadvantages are that the hardness of alumina material is low, the wear resistance is poor, and the length of a single wiper blade is small (about 10 cm). Uneven joints, low production efficiency, manual operation, large floor area, and unstable product performance. Contents of the invention [0003] The object of the present invention is to provide a method for preparing a ceramic wiper blade with excellent performance, which can overcome the above defects, adapt to continuous mass production by extrusion molding. Its technical solution is: [0004] Including ceramic mud preparation, molding, curing, firing, polishing, making the particle size into d 50 <0.5μm silicon carbide powder, part...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/569C04B35/622
Inventor 唐竹兴许珂敬
Owner SHANDONG UNIV OF TECH
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