The working principle of impact crushing "striking stone while striking iron" should be discussed together with the feeding method. There are two feeding methods for impact sand making machine, one is complete central feeding, and the other is central feeding with waterfall feeding. Generally speaking, the feeding mode of the whole center is mainly "strike while the iron is hot", supplemented by waterfall feeding, which is a combination of "strike while the iron is hot". The characteristics of "stone to stone" and "stone to iron" are as follows:

1, "stone to stone" and "stone to stone" crushing methods are suitable for crushing materials with moderate hardness and corrosive materials, such as basalt. In the crushing process, the material does not collide with metal elements, but with the inner lining of the material, which can reduce the wear and tear of the sand making machine equipment, and the particle shape of the crushed material is better, but the disadvantage is that the powder content of the material may be slightly higher. Generally speaking, "stone to stone" is suitable for shaping materials.

2. The crushing methods of "striking iron with stone" and "striking iron with stone" are suitable for crushing materials with moderate or small hardness and less corrosiveness, such as limestone. In the process of crushing, the material directly collides with the impact block, which has high crushing efficiency, but the equipment wear cost is high, and the particle shape of the crushed material is slightly worse. Generally speaking, "strike while the iron is hot" is suitable for making sand.