Composite crusher hammer breaking the Causes and Treatment:

???????? Composite crusher hammer handle and the hammer of the R20 small fillet, stress concentration, the hammer is very easy from here fracture. In addition, the presence of the hammer handle internal sand eyelets and casting defects, casting cast loose organizational structure also contributed to an important cause of hammerhead fracture.

Hammerhead unreasonable, we have improved the design:

1) will hammer and hammer handle at the fillet increased from R20 to R80, reducing the combined stress concentration there;

2) the hammer work section from trapezoidal to rectangular, to remove the hammer work both ends of the wear-resistant steel bars separated by contact with the impact of coarse crushing chamber and Crusher crushing chamber).

3) hammerhead material originally ZGMn1a broken gypsum, limestone and other low to medium hardness material, of ZGMn13 in the role of low-impact stress to the extent of work hardening small hammer work surface hardness is not high, their working conditions are basically low composite crusher stress chisel impact abrasive wear, wear out sooner. Therefore, we will be changed to the hammer material ZG3OCr5MoRe improve its hardness.

palabras clave: Compound crusher, hammer crusher, crushing machine, hammer handle, stress,