Products Description
Steel balls for mining ball machines can be divided into casting steel balls and forged steel balls. They are all called grinding steel balls. What they have in common is that they are all grinding media balls for mining mineral processing ball mills. The sizes are generally represented by diameter, which can include sizes from 20mm to 150mm, basically 5 radials. There are also special balls with a diameter of 127mm; in addition, the crushing rate, hardness, Impact value and out-of-roundness are both criteria.
Appearance requirements
There is a pouring opening on the surface of each steel ball, because the cast balls are formed by pouring. This causes the steel balls to be out of round, so the smaller the pouring opening, the better. Starting from this pouring opening, the steel ball is easily ground. In addition, the structure of the steel ball in this area is uneven and the density is lower than other parts of the steel ball, so it is easy to cause deviations in the overall performance of the steel ball.
Therefore, the surface must be smooth. Of course, unlike stainless steel balls, the surface of casting steel balls is relatively smooth. In addition, it cannot be out of round, so that the steel ball is more wear-resistant and the breakage rate is extremely low.
Application areas
Scientifically speaking, cast steel balls are suitable for dry grinding industries and wet grinding industries. Of course, power plants, coal chemical industry, coal grinding and other industries are also suitable for casting balls.
Currently, a large proportion of cast balls are used in the cement industry and copper mines on the market, and mainly high-chromium cast balls. In addition, some cast balls in China are used in fields such as coal grinding, mining ore dressing, power plants and coal chemical industry, and they are mainly high-chromium or ultra-high chromium cast balls. In addition, gold mines generally use high-chromium cast balls, and copper mines generally use low-chromium cast balls.
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