11 details that can effectively extend the service life of crusher hammers:
1) According to the design model, the feeding size should be appropriately controlled, and materials exceeding the maximum limit size of the design are strictly prohibited from entering the machine.
2) Select appropriate feeding equipment, such as plate feeders or vibrating feeders, to ensure uniform and stable feeding, and avoid impact and ineffective operation of the equipment due to uneven feeding.
3) Due to quality errors during the casting of the hammer head, the hammer head should be rolled back and forth on time according to the current situation during use, in order to ensure uniform wear of the hammer head and balanced operation of the rotor.
4) It is best to weigh the new hammer head and divide it into several groups based on the mass, with equal mass requirements for each group. Otherwise, rotor imbalance during startup can easily cause vibration.
5) When parking, check the gaps between the hammerhead and the sieve strip, as well as between the sieve strips. Adjust them if necessary and replace the sieve strips regularly. Because the cost of a hammerhead is higher than that of a sieve bar, a new sieve bar can be used for 4-5 more shifts compared to an old one.
6) The hammer frame of the hammer crusher is made of cast steel material, which has less contact with the material. However, when metal objects or lining plates fall off inside the crusher, it is easy to cause damage or bending of the middle hammer plate. At this time, it should be replaced in a timely manner, otherwise it is easy to lose the hammer head and cause vibration.
7) Due to material impact, the edge hammer plate of the hammer frame and the side plate of the casing are severely worn. In order to extend the service life of the edge plate, a wear-resistant layer can be welded on the circumferential surface of the edge plate and the side near the side plate.
8) Due to friction during operation, the shaft diameter at both ends of the main shaft is prone to wear. During installation, two protective sleeves should be added at the shaft diameter to wrap around the shaft and protect it.
9) After bearing wear, it should be repaired and trimmed in a timely manner. After bearing wear, it is generally necessary to scrape and grind the bearing according to the new size, adjust the thickness of the gasket, and maintain a reasonable clearance to form an effective lubricating oil film.
10) The power and speed of the rotor not only directly affect the production capacity of the crusher, but also the degree of impact hardening of the hammer head. To extend the service life of the crusher hammer head, it is necessary to distinguish the material of the hammer head. For hammer heads made of high manganese steel, it is necessary to ensure that they have sufficient impact force, while for high chromium small hammer heads, the opposite is true, so it is necessary to control them from having excessive impact.
11) Regularly clean the accumulated material in the crusher section, as the presence of accumulated material can cause severe friction and wear on the crusher hammer head, leading to a sharp reduction in its service life.
Therefore, it is necessary to choose the appropriate crusher hammer head according to different crushing materials during use, and adopt different wear reduction measures based on different influencing factors to extend the service life of the hammer head.