Coarse hammer mill’s main part is hammer head,in the process of work,the hammer head wear rate is very high,in order to improve the service life of coarse hammer mill,we have to protect the hammer head well,specific practices are as follows:

 

The technical data of coarse hammer mill:

the technical paraments of coarse hammer mill can affect the service life of hammer head,which is the main rotor power and speed.they are not only related to crusher production capacity,but also related to the degree of hammer impact hardening.if the hammer impact hardening is well,its service life will be extended.

 

The structure design and manufacturing quality of hammer head:

the structure design and shape of the hammer head have huge influences in its mechanical properties and internal microstructure after heat treatment.especially the thickness size effect is more outstanding.based on different material hammer head fracture failure from analysis shows that the main cause of hammer head fracture is the surface of the inner defects of different levels .because of the existence of defects,make the most of the hammer head fracture occur at the beginning of the use.therefore,in the production of hammer head.we must develop a reasonable casting and heat treatment process.

 

The block and hardness of the broken material:

The greater the block of broken material ,the higher requirements for its toughness,the higher the material hardness,the higher the hardness of material requirements.the specific type of crusher should adopt appropriate feeding granularity,which to a certain extent,prolong the service life of hammer head.                      

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