Material Selection of Jaw Plate of Jaw Crusher

The jaw plate has endured plastic deformation and cutting wear during use. Therefore, the material of the jaw plate should have high hardness to resist plastic fatigue and cutting wear, and a certain toughness to prevent brittle peeling or fracture. When actually selecting the material of the jaw plate, it is necessary to fully understand the working conditions and wear mechanism, and choose the material of the jaw plate reasonably.

The material of the jaw plate should meet the requirements of high hardness and high toughness. However, the toughness and hardness of materials are often contradictory. Therefore, it is necessary to fully understand the working conditions and select materials reasonably.

1. Improve the hardness of the jaw plate

The larger the size of the jaw crusher, the larger the size of the crushed material, and the greater the impact load the jaws bear. When selecting the material, the first consideration should be to increase the hardness of the jaw while ensuring the toughness of the jaw. For medium and small crushers, the impact load on the wearable parts is not very large. Choose medium-carbon low-alloy steel or high-chromium cast iron/low-alloy steel composite material to achieve good technical and economic benefits.

2. The force of the movable plate and the fixed plate

The force mode of the movable plate and the fixed plate is different from the wear mechanism. The moving plate bears greater impact force, so toughness should be considered first. The fixed plate is supported by the frame, so the hardness can be given priority.

3. Material composition and hardness

For crushing different materials (such as granite, quartzite, and limestone), the material of the jaw plate should be different. The higher the hardness of the material, the higher the hardness requirement of the wearable parts, and the higher the hardness of the corresponding jaw plate.

4. Wear mechanism of wear parts

If cutting wear is the main focus, hardness should be considered first when selecting materials. If plastic deformation wear or fatigue wear is the main focus, plasticity and toughness should be considered first when selecting materials.

5. Consider the technical and economic effects

When choosing the material of the jaw plate, technical and economic effects should also be considered, and strive to achieve high quality and low price. At the same time, the rationality of its process should be considered, so that the production plant can easily organize production and control quality.

Of course, when selecting materials, the rationality of the process should also be considered, so that it is easy to organize production and quality control.