Evaluación y análisis del proceso de recuperación de martillos de trituradora de minerales

Hummer crusher is commonly employed for crushing hard materials such as coke, limestone, coal in cement, among others. Hummers are actually characterized for being made of high Mn austenitic steel. Owe to hummer component is subjected of repetitive impact loads into a chamber in which a batch of hummers is set up; there is an important wear rate of the type impact-abrasive mechanism. In order to overcome the severity of wear rates upon low cost; a welding procedure is proposed in this work by employing SMAW. A thick plate made of heat treated AISI 1080 steel has been joined to an austenitic hummer. Microstructure and hardness were assessed along the fusion zone and heat affected zone. A high fraction of carbides, probably of the type MnC, have been found near the fusion line. Besides, a number of discontinuities (slag) were revealed at the fusion zone of the dissimilar steel combination.