Causes and Solutions for Excessive Impact Hammer Wear in Crusher

Causes of Excessive Impact Hammer Wear

1. Material Issues: If the impact hammer material is not hard enough or has poor wear resistance, its service life will be directly affected. High-manganese steel, high-chromium cast iron, and composite materials are commonly used wear-resistant materials.
2. Material Properties: The hardness, toughness, and moisture content of the material all affect the wear rate of the impact hammer. Materials with excessive hardness, high hard impurities, and high moisture content will increase impact hammer wear.
3. Equipment Design: If the crusher’s design parameters, such as the rotor’s linear speed and the gap between the impact plate and the impact hammer, do not meet the material’s crushing requirements, they can also lead to excessive impact hammer wear. 4. Improper Operation: Improper operation of the crusher, such as overloading, material particle size not meeting requirements, or the inclusion of non-crushable materials in the material, can lead to increased hammer wear.
4. Inadequate Maintenance: Failure to perform regular maintenance on the crusher, such as delaying the replacement of hammers and repairing worn impact plates, can also cause rapid hammer wear.

Countermeasures

1. Selecting Appropriate Materials: Select appropriate hammer materials based on the properties of the crushed material. For example, for hard materials, choose high-hardness, high-wear-resistant materials.
2. Optimizing Material Handling: Pre-treat the material before crushing, such as screening and impurity removal, to reduce the impact and wear of hard impurities on the hammers.
3. Equipment Improvement: Adjust the crusher’s design parameters based on the material’s crushing requirements, such as appropriately reducing the rotor linear speed and adjusting the gap between the impact plate and hammers.
4. Standard Operation: Strictly adhere to the crusher’s operating procedures, avoid overloading, ensure that the material particle size meets requirements, and regularly check the material for non-crushable materials. 5. Enhance maintenance: Regularly inspect and replace the hammers, and promptly repair or replace worn impact plates to ensure the crusher remains in good working condition.

These measures can effectively slow the wear of the impact hammers and extend their service life, thereby improving crusher efficiency and reducing operating costs. In actual operation, appropriate measures should be taken based on the specific circumstances, taking into account various factors, to achieve optimal crushing results.