Wear-resistant composite coating for toothed rail of mining scraper and preparation method of wear-resistant composite coating

The invention discloses a wear-resistant composite coating for a toothed rail of a mining scraper and a preparation method, belongs to the technical field of wear-resistant composite coatings, can solve the problem of serious wear of the toothed rail of the mining scraper, and adopts a laser cladding technology to clad the wear-resistant composite coating on the working surface of the toothed rail of the scraper. The coating is an iron alloy wear-resistant composite coating and comprises the following components in percentage by mass: 30.0 to 50.0 percent of iron powder, 35.0 to 45.0 percent of chromium powder, 8.0 to 15.0 percent of molybdenum powder, 1.0 to 2.5 percent of boron powder and 3.0 to 11.0 percent of niobium carbide. The wear-resistant coating is metallurgically bonded with the surface of the toothed rail, and the wear resistance of the coating is improved by adopting niobium carbide ceramic particles. The wear-resistant composite coating shows excellent impact resistance and wear resistance unde