A kind of forming method of super wear-resistant alumina ceramic ball

A technology of alumina ceramics and a molding method, which is applied to ceramic molding machines, manufacturing tools, etc., can solve the problems of unfavorable mechanized production, high manual operation intensity, and low product qualification rate in roll forming, and improve the structure and performance. , Improve the reliability of materials, the effect of simple molding operation

Active Publication Date: 2015-08-12
JINGDEZHEN BETTERWEAR NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The isostatic pressing method has relatively strict requirements on the powder, and there are problems such as not easy to control, low product qualification rate, and low efficiency. However, roll forming is not conducive to mechanized production, and the manual operation is intensive and difficult to control.

Method used

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  • A kind of forming method of super wear-resistant alumina ceramic ball

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Put the raw material mixture and water into the ball mill according to the proportion, and run for 20 hours to release the pulp;

[0019] 2. After the mud enters the tank, start the mixer and the pumping machine, filter it through the vibrating screen, and flow into the iron removal tank at the same time;

[0020] 3. After passing through the iron removal tank, the slurry is pumped to the mud press by the slurry pump to dehydrate the slurry to make mud cake;

[0021] 4. The mud cake is then refined by a vacuum mud refining machine, so that the water content is 21%;

[0022] 5. Put the mud obtained in step 4 into the injection molding machine and apply pressure to the plastic mud within 0.5, so that it can be injected into the metal model cavity at high speed and then molded; the injection pressure in this process is 1.5MPa , the temperature of the metal mold during molding is controlled at 150°C;

[0023] 6. Put the semi-finished product formed in step 5 into the s...

Embodiment 2

[0025] 1. Put the raw material mixture and water into the ball mill according to the proportion, and run for 25 hours to release the pulp;

[0026] 2. After the mud enters the tank, start the mixer and the pumping machine, filter it through the vibrating screen, and flow into the iron removal tank at the same time;

[0027] 3. After passing through the iron removal tank, the slurry is pumped to the mud press by the slurry pump to dehydrate the slurry to make mud cake;

[0028] 4. The mud cake is then refined by a vacuum mud refining machine, so that the water content is 23%;

[0029] 5. Send the mud material obtained in step 4 into the injection molding machine and apply pressure to the plastic mud material within 0.4, so that it is injected into the metal model cavity at a high speed and then molded to form; the injection pressure in this process is 1MPa, The temperature of the metal mold during molding is controlled at 180°C;

[0030] 6. Put the semi-finished product forme...

Embodiment 3

[0032] 1. Put the raw material mixture and water into the ball mill according to the proportion, and run for 27 hours to release the pulp;

[0033] 2. After the mud enters the tank, start the mixer and the pumping machine, filter it through the vibrating screen, and flow into the iron removal tank at the same time;

[0034] 3. After passing through the iron removal tank, the slurry is pumped to the mud press by the slurry pump to dehydrate the slurry to make mud cake;

[0035] 4. The mud cake is then refined by a vacuum mud refining machine, so that the water content is 25%;

[0036] 5. Send the mud obtained in step 4 into the injection molding machine and apply pressure to the plastic mud within 0.2 seconds, so that it can be injected into the metal model cavity at high speed and then molded to form; the injection pressure in this process is 2MPa , the temperature of the metal mold during molding is controlled at 200°C;

[0037] 6. Put the semi-finished product formed in st...

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Abstract

The invention provides a forming method for a super wear-resistant alumina ceramic ball. The forming method includes a first step of providing pug with 17-25% of moisture content through working procedures of material proportioning, ball grinding, filtering, iron removing, mud squeezing, vacuum pugging and the like, a second step of sending the pug into an injection molding machine, a third step of enabling the pug to be injected into a metal mold cavity at high speed within 1 / 5-1 / 2 second, and opening a mold and forming the super wear-resistant alumina ceramic ball, wherein injection pressure in the injection process is 1-3MPa, and temperature of the metal mold in the forming process is controlled within 130-200 DEG C, and a fourth step of carrying out high-temperature sintering on formed semi-finished products at 1450 DEG C, carrying out heat preservation for two hours and obtaining the products. Equivalent abrasion of the products reaches 0.054 %., rupture strength of the products reaches 320MPa, and degree of sphericity is bigger than 95%. The forming method enables main performance index of the products to be remarkably improved, and expands application scope of the products.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials (ceramics), and in particular relates to a method for forming super wear-resistant alumina ceramic balls. Background technique [0002] Alumina (Al 2 o 3 ) Ceramics are increasingly used in high-tech and cutting-edge industries, such as alumina ceramic balls, microelectronics, nuclear reactors, magnetic fluid power generation, aerospace, artificial bones and artificial joints. Among them, alumina ceramic ball is an important engineering ceramic. Due to the high hardness and high density of alumina ceramic balls, the amount of material in the grinding body can be increased; the ball stones are dense, the specifications are neat, the probability of collision is large, and the grinding efficiency is high; the chemical composition of the ground materials is stable, so alumina ceramics Balls are widely used in the grinding and processing of raw materials in white cement, minerals, cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B1/24C04B35/10C04B35/622
Inventor 张忠祥汪志良董丽娜南小英南勇军
Owner JINGDEZHEN BETTERWEAR NEW MATERIALS
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