The threaded rod rotates in the barrel, and the friction between the material and the two makes the working surface of the threaded rod and the barrel gradually wear out; the diameter of the threaded rod gradually shrinks, and the diameter of the inner hole of the barrel gradually increases. In this way, the gap between the mating diameters of the threaded rod and the barrel gradually increases with the gradual wear and tear of the two, resulting in a decrease in production. Laser cladding technology can effectively solve this kind of wear problem, and remanufacture and repair the wear surface of the threaded rod, which effectively prolongs the service life of the threaded rod and reduces the use and maintenance costs.