How to identify high-quality high-aluminum balls?

High aluminum balls have excellent characteristics such as high strength, high hardness, high wear resistance, high specific gravity, small size, high-temperature resistance, corrosion resistance, and no pollution. High aluminum balls are wear-resistant alumina balls. They are widely used in the finishing and deep processing of thick and hard materials in factories of different types of ceramics, enamels, glass, chemicals, etc. RS high aluminum ball manufacturers can customize various sizes of high aluminum balls, grinding balls, wear-resistant balls, etc. Contact Rongsheng for detailed information.

How to identify high-quality high-aluminum balls?

How do we identify the quality of high-aluminum balls without tools?

1. First look with your eyes. The higher the alumina content, the whiter the color of the ball, and vice versa.

2. See if there are any indentations. Those with indentations are pressed and have high strength. Those without indentations are rolled and have poor strength.

3. Touch with your hands. The surface is smooth and has no roughness, which is of good quality. Feel the quality, the heavier the alumina content, the higher it is.

The above is a simple identification method. The more rigorous ways to distinguish are:

Specific gravity: Taking the high-alumina ball with a content of 92% as an example, its specific gravity (density) should reach more than 3.60g/cm3, and the alumina content should reach more than 92%. With the same raw materials, the same formula, and the same firing temperature, the smaller the fineness of the raw material after grinding, the higher the specific gravity and the better the wear resistance. The specific gravity of the high-alumina ball is mainly affected by the powder and firing. Factors such as raw firing (undercooked), too coarse powder, and the addition of miscellaneous materials will cause the specific gravity of the ball stone to be insufficient. Ball stones with low specific gravity are not wear-resistant and easy to crack. However, high specific gravity does not mean that the ball stone must be wear-resistant, because over-sintered ball stones can also achieve a higher specific gravity.

Wear resistance: The most important quality manifestation of ball stones is wear resistance. Some testing agencies can also do wear tests. These test reports can show the quality of the ball stones, but the data is for reference only. Because the environmental conditions for laboratory testing are very different from the environment in production. First of all, the test is water-milled, while many manufacturers use dry grinding. Secondly, in many cases, no other raw materials are added to the test, only the friction between the balls, while various raw materials are added in the actual production process. In the actual use process, to detect the wear of the balls, more records must be made. After the initial proportioning, by recording the amount of balls added and combining the output, the wear of the balls in production can be calculated. In this way, the cost comparison between high-aluminum balls and other grinding balls can be compared, and the quality of balls from different manufacturers can also be compared.

In addition to the hardness and fineness of the feed, factors that affect the wear of the ball stone include the grinding method (such as the difference between dry grinding and wet grinding), the speed of the ball mill, whether the ratio of the ball stone is reasonable, the viscosity of the feed, and other factors.

The users of high-aluminum balls are mainly ceramic factories. In addition to the ceramic industry, quartz, chemical and other industries are also trying to use high-aluminum balls for production. Among them, quartz factories are mainly used to produce silicon micropowder. Practice has proved that the production of 325-mesh silicon micropowder can greatly increase the output and product quality by replacing quartz balls with high-aluminum balls. Such as whiteness, uniformity, etc. Moreover, since the loss rate is not as fast as quartz balls, the manpower and time cost of adding ball stones are saved. The main problem encountered in the use of high-aluminum balls at present is that due to their high hardness and brittleness, dry grinding can easily cause cracking of the ball stone and pits on the surface of the ball stone, resulting in very high wear. Now we can only use the method of polishing the ball stone before leaving the factory to pick out cracked or high-wear ball stones to minimize losses.