Tribology properties of remanufacturing forming layer for joint sleeve of cardan axis by MAG surfacing after heat treatment

The self-developed cored wire was adopted to practice remanufacturing experiment on joint sleeve with MAG surfacing deposition technology,aimed at the analysis on service environment characteristic and failure mode. Then,tribology properties were tested and compared between the quenched forming layer and substrate. The result shows that the worn mechanism of remanufacturing forming layer after quenching heat treatment and substrate is a mixture of adhesive wear and abrasive wear under the fretting wear condition of test temperature 100 ℃ and humidity35% ～ 45%. The lamellar abscission area on the surface of the substrate worn sample is larger,and the abrasion loss of the substrate is greater than that of the quenched forming layer,which illustrates that fretting tribological properties of the quenched forming layer is preceded to the substrate. And the self-developed cored wire is suitable for remanufacturing on the surface of joint sleeve of cardan axis to prolong its service life.