Application of brazed coating diamond in remanufacturing of shield cutters

The diamond wear-resistant composite coating was prepared on the surfacing layer by induction brazing.The abrasive wear experiment was carried out on the coating, and the microstructure and wear scar characteristics of the brazing coating interface were characterized by stereomicroscope, scanning electron microscope, energy spectrum analysis and wear mass loss.The results show that the diamond composite coating is well formed, the diamond is dispersed in the composite coating, the brazing reaction interface about 5 μm is formed between the solder and the surfacing layer, and a good metallurgical bond is achieved.Under the same wear test conditions, the mass loss of the surfacing layer is 0.601 2 g, and the mass loss of the brazed diamond remanufactured specimen is 0.087 1 g, which is about 14.5% of the mass loss of the surfacing layer.