The main factors of affecting the hammer head abrasion are: hammer head material, manufacturing quality, and structure design, as well as crusher technical parameter, feeding situation.
1. Hammer head material: Generally speaking，the more hard the hammer head, the large the wear-resistance, In order to improve the head wear resistance, it needs to increase the hardness, but with the increasing of hardness, the anti-impact toughness will be decreased. Therefore, how to give attention to both hardness and anti-impact toughness is the key to improve the wear resistance of hammer head.
2. Manufacturing quality: The manufacturing process of hammer head is also the key factor to affect its service life. If any defects such as shrinkage, cracking, and transgranulation appear in the hammer head surface or be existed during manufacture, which will greatly reduce its performance and even break the head. As a consequence, reasonable casting and heating processing should be added during manufacture.
3. Structure design: Different structure of hammer head with different geometrical shape, its heating processing mechanical property and internal metallographic structure has big difference, and thus affecting the wear resistance.
4. Crusher technical parameter: The service life of hammer head is also close to the technical parameter. Especially the power and speed of rotor. These two factors directly reflect the linear speed and impacting force, which effect both production capacity and impact hardening.
5. Feeding situation: including feeding granularity and hardness as well as feeding mode.