The invention belongs to the technical field of
laser additive manufacturing, and particularly relates to a
laser cladding wear-resistant
coating for the surface of a
titanium alloy external spline and a preparation method of the
laser cladding wear-resistant
coating, the thickness of the
coating is 0.1-1.0 mm, and the microhardness of the coating is larger than or equal to 500 HV; the coating comprises the following components in percentage by weight: 20 to 30 percent of TiC, 20 to 40 percent of WC and the balance of TC4. The method comprises the following steps that S1, coating
powder is prepared, specifically, TiC
powder, WC
powder and TC4 powder are subjected to ball milling and mixing according to the component proportion, and the coating powder is obtained; s2, setting laser cladding process parameters, and performing multi-pass laser cladding on the surface of the
titanium alloy external spline by using the coating powder obtained in S1; and S3, the surface of the
titanium alloy external spline subjected to laser cladding is ground, so that the
titanium alloy external spline reaches the preset size. High-strength combination, low
internal stress distribution and high abrasion resistance of the coating and the base body can be achieved, and the application
bottleneck of
titanium alloy precision transmission parts in the high-speed and heavy-load environment is broken through.