Investigation on failure analysis and optimization of WC–Co hard metals after long-term use in a bottle cap forming machine

摘要: Abstract Failure analysis was performed on WC–Co hard metal molds after long-term use in a bottle cap forming machine. In addition, we simulated the optimal physical properties of top and bottom for minimizing wear caused by use. To this end, investigated microstructure, wear, hardness, transverse rupture strength (TRS) with different WC particle sizes WC/Co content ratios via simulations Poisson's ratio Young's modulus as inputs. The results show that large stress distribution at did not signify high maximum value; distributions depended combination materials used molds. It concluded similar would fracture readily or suffer due to relatively stress, where showed lowest (compared other combinations) mold, larger than mold. These findings are expected be useful optimizing applications pieces come into contact, e.g. designing machines longer lifetimes fewer defects.