Failure analysis of critical part-reading arm in electronic dobby shedding device
Rupturing reasons of the reading arm in electronic dobby shedding device were analyzed by chemical composition, fracture morphology, microstructure,fracture hardness tests. The results show that the main reason is that high Si content and slag inclusion in reading arm that lead to microcrack and hardening flaw. So the reading arm fractures brittlely in the work condition at last. At the same time quenched zone of the reading arm is too big, the poor toughness is also one of the reason of the reading arm for rupturing.
reading armfailure analysishardening flawhardening zone
NETL
NSTL
万方数据
维普
