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19年10月 2 Comments 56 Likes

Analysis of Key Factors Affecting Hammer Life of Hammer Crusher

Hammer crusher is a commonly used crushing equipment widely used in mining, chemical, metallurgy, building materials, electric power and other industries. Among them, the hammer head is the main wearable part, and the quality of the hammer directly affects the crushing efficiency of the crusher.

At present, most of the domestic hammer crusher hammers are made of high manganese steel. Due to the insufficient wear resistance of high manganese steel, poor wear resistance and short service life, frequent replacement is required.

During the work, the hammer head is also impacted by the material in addition to the impact, so that the long-term repeated use, the working surface of the hammer head will be damaged, and the surface shape will change. Factors affecting the life of the hammer:

1. Structural design and product quality of the hammer

The structural design and geometry of the hammerhead have a great influence on the mechanical properties after heat treatment and the internal metallographic structure. In particular, the hammer head with a large thickness has a more prominent influence. By analyzing the failure modes of the hammerheads of different materials, it is known that the main cause of the hammer head fracture is that there are different degrees of defects inside or on the surface. Due to the presence of defects, most of the hammers are broken at the beginning of use. Therefore, in the production of hammers, reasonable casting and heat treatment processes must be established.

2. Technical parameters of hammer crusher

The technical parameters of the hammer crusher also affect the service life of the hammer, the main one is the power and speed of the rotor. They are not only related to the production capacity of the crusher, but also to the degree of impact hardening of the hammer. The hammerhead has a good degree of impact hardening and its service life is prolonged.

3. The blockiness and hardness of the broken material

The greater the material mass, the higher the toughness requirement, and the higher the material hardness, the higher the hardness requirement of the hammer material. The specific type of crusher should adopt the appropriate feed size, which will extend the service life of the hammer to a certain extent.

4. Adjustment of internal clearance of hammer crusher

The internal clearance of the hammer crusher mainly refers to the gap between the rotor body and the counterattack plate, the purlin and the hammer. The size of these gaps will be related to whether there is accumulation near the purlins and the safety gates. If the stock is present and the hammer cannot press the stack off the stringer, the hammer will be subject to severe friction and wear. Therefore, during use, the gaps between the parts must be adjusted frequently to be within the proper range.

There are many factors influencing the service life of the hammer crusher hammer. The above four points are summarized by the red apple casting according to the production experience of the hammer crusher for many years and the feedback from the customers. For the user's reference of the hammer crusher, For more information, you can consult an expert.