With the wide applications of large mining excavator in the engineering project, dipper bucket wear failure has become a more and more serious problem and that will also impact on excavators service lifetime and the mining efficiency, which can increase the cost - output ratio of the project. Therefore, controls may be imposed on excavator bucket abrasive wear problems, this is also the first priority for mechanical maintenance personnel.

Most of the excavator buckets are made of high manganese steel plate, but the poor working applications can always accelerates the abrasive wear speed of excavator bucket, the buckets are worn or rounded and even fractured. According to the relevant document, we have approximately 2000-2500 large mining excavators under normal operations per year, and economic losses caused by bucket wear failure is around 30 million RMB.

High hardness chromium carbide plate can effectively improve the surface hardness of the bucket and its wear degree, which can increase the service lifetime of the mining excavator bucket and also improve operation efficiency, it has become the best choice for large mining excavator.