The commonly used hammer crushers are PC hammer crusher, ring hammer crusher, heavy hammer crusher, impact hammer crusher and so on. In the working process, the hammerhead is continuously impacted and rubbed by materials, thus generating abrasion, which needs to be replaced regularly. The abrasion of hammerhead not only influences working efficiency of stone breakers, but increases economic costs. Hence, the crusher manufacturers should find effective measures to solve the abrasive problems of hammerhead.
There are several situations influencing the abrasion of hammerhead:
The harder materials have higher hardness requirements on the materials of hammerhead. Hence, we should properly control the feeding size of rock crushers machines. This can reduce the influence of hammerhead to some extent and prolong the service life of hammerhead.
The high manganese steel hammerhead cannot give full play of its role in working process. Adopting composite hammerhead which is also called alloy hammerhead can improve the hardness and main good impact toughness at the same time, which can effectively extend service life of hammer head.
Different structure of hammerhead and geometrical shape have different effect on mechanical properties of heat treatment. The effect is more outstanding on the hammerhead with big thickness and size.
The power and speed of rotor not only influence production capacity of stone crushing machines, but also relate to impact hardening degree of hammerhead. The clearance size inside crushers will also affect the abrasion of hammerhead. Hence, we must select reasonable rotating speed and regularly adjust the clearance between parts so as to make it in a proper range.
In the impact process of hammerhead and materials, if the fixation of hammerhead is not good, it will cause the hammerhead departing rotor, thus resulting in other mechanical failures.
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