(1) The strength of the material - Strength is related to the resistance of artificial sand making machine. Generally speaking, the strength and resistance of the sand making machine are directly proportional to each other. The greater the resistance, the higher the energy consumption. In view of the strength characteristics of the material, choosing the right sand making machine can make the sand making machine more efficient. We should consider the strength of different sand making machines. The strength of the material is related to its particle size. The smaller the particle size, the smaller the microscopic cracks, and the higher the strength.

(2) Hardness refers to the ability of materials to resist local surface forces without being destroyed. There are different hardness grading methods according to different standards. The compressive strength standard tested under the laboratory material conditions: the material with compressive strength greater than 250Mpa is hard material, and the material from 40 to 250Mpa is called medium hard material, and the material less than 40Mpa is called soft material. The hardness data measured by the same material are usually different due to the uneven material properties. In practical work, the fragility of the material is often used to indicate its hardness, which is because the hardness of the material can reflect the difficulty of the material manufacturing machine to a certain extent.