About Alumina Ceramic Ball
Production method of alumina ceramic ball
1. Hydraulic hard die forming
Strictly speaking, the alumina ceramic ball formed by this method is not geometrically spherical, but cylindrical or column spherical, using this forming method is generally the production of aluminum above the porcelain ball. The single column hydraulic press forming alumina ceramic ball in the past is used more, with this method of forming, the general forming pressure is not high, and is one-way pressure, the billet body strength is low, the density is small, burning shrinkage, sintering temperature is high. Forming alumina ceramic balls by bidirectional hydraulic press is a recent development, especially suitable for forming small balls.
2. Cold isostatic pressing by wet bag method
Cold isostatic pressing alumina ceramic ball with wet bag method, is the first powder filled in the inner cavity of the spherical soft mold (rubber mold), the soft mold must be sealed, into the cold isostatic press working cylinder (high pressure container), through the ultra-high pressure (generally in 1OOMPa Above) liquid medium, liquid medium with equal pressure to the soft mold and powder evenly compressed, after pressure relief will be the soft mold together with its internal blank body from the cold isostatic press cylinder out of the work (plastic mold is wet, and plastic mold is also known as the bag, wet bag from this name), in the working cylinder is released to get spherical blank body. The alumina ceramic ball formed by this method has high density and uniformity, which is better than other forming methods.
3. Dry isostatic pressing
Dry isostatic pressing of alumina ceramic ball is the most advanced forming method at present. It is easy to realize automatic production and less affected by human factors. The consistency of the shape and appearance of the blank body is better than that of cold isostatic pressing of wet bag. Generally, from the beginning of pressure to the end of a pressing cycle in one minute, pressure relief when the gas inside the body to discharge in a short time, if the powder water is not uniform or the granularity of granulation is not appropriate, the body is easy to crack or even pulverized burst, so this method of forming the forming performance of the powder is high, must be sprayed by the powder granulation.
The application of alumina ceramic ball:
1. First of all, it can be used as a grinding medium, that is to say, it can be used in some ball mills, pot mills and other grinding equipment. Because it is very wear-resistant, so the application is very useful in this respect, much better than the ordinary medium, so it will be used in some ceramic factories and glass factories when finishing or deep processing. It can help the grinding equipment to grind well, improve the efficiency of the work. At the same time, using this as the medium can also save a lot of time and cost, because it is not very expensive.
2. At the same time, the role of adding this ceramic ball in the rubber is also very large, it can increase the coefficient of grinding, making the rubber more wear-resistant, in many fields when the rubber can be added to the ceramic ball. Make the effect more obvious, but also can extend the use of time, which can also reduce the cost. In addition, it is very resistant to high temperature, so it is also very useful as a catalyst in some reactors, such as natural gas or environmental protection industry, it can be used well, and will not produce any harmful substances when used.
Jiangsu High Industry on the research and development and production of high-performance polyurethane isostatic pressing molds. Through in-depth cooperation with many isostatic pressing equipment manufacturers and in-depth study of the industry, the developed isostatic pressing polyurethane mold series products have the characteristics of long service life, high precision, small deformation, easy demoulding, etc., and are widely used in ceramics, etc. Static pressing mould, cemented carbide isostatic pressing mould, rare earth permanent magnet material isostatic pressing mould, graphite isostatic pressing mould, etc.
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