How to produce ball Grinding Steel Balls

1. The steel ball manufacturing process used in the ball mill is roughly divided into two types: casting and forging. The main difference between them is that the wear-resistant length is different. 1. Forged (rolled) steel balls: 50mn, 60mn, 65mn and high-alloy steel B2, B3, BU forged hot-rolled steel balls, etc. 2. Cast steel balls: non-electric furnace production of low-chromium alloy cast steel balls, electric furnace melting of medium-chromium alloy cast steel balls, electric furnace melting of high-chromium alloy cast steel balls %-30%).

2. Requirements for ball mill steel balls: The output of the ball mill is not only affected by the loading of the steel balls, but also related to the diameter of the steel balls. It is required to have a certain ball diameter and maintain a certain proportion of balls with different ball diameters. Generally, the size range of the ball diameter in the cylinder is 25-60mm. If there are large diameter balls in the cylinder, the impact force is large, which is beneficial to crushing large lumps of coal. However, due to the large gap between the balls and the small relative surface area, the extrusion and grinding effects are weakened, which is harmful to the coal mill. The output and coal fineness are both unfavorable. There are too many small-diameter steel balls in the cylinder, and the impact force is small, which will reduce the output of the coal mill.

3. Characteristics of steel balls of ball mill: The content of chromium in cast balls is divided into high, medium and low chromium balls. Generally speaking, medium and low chromium balls have poor wear resistance, high crushing rate, and the price is relatively affordable. Considered very high. High-chromium cast balls are well used in cement ball mills due to their good hardness and good wear resistance, but high-chromium cast steel balls have poor toughness and are easy to break during production, and their cost is high. , the price is also high, which indirectly increases the production cost.

4. Application of ball mill steel ball: Ball mill steel ball is a kind of grinding medium used to grind ore blocks in cylindrical ball mill, which is widely used in iron ore and non-ferrous metal mine concentrator, cement plant, thermal power plant, refractory material plant , iron and steel plants, phosphate fertilizer plants and other grinding industries. While grinding the ore blocks, the ball-milling steel ball also wears and becomes smaller until it fails, so it consumes a lot.