Ultrahigh-speed laser cladding system and laser cladding method

Abstract

The invention discloses an ultrahigh-speed laser cladding system and laser cladding method. The ultrahigh-speed laser cladding system comprises a laser device for generating a laser beam, a heating power source, a powder feeder and powder heating tube assemblies, wherein each powder heating tube assembly is composed of an outer ceramic tube, electromagnetic heating assemblies and an inner ceramictube, each inner ceramic tube is arranged in the corresponding outer ceramic tube, and the electromagnetic heating assemblies are arranged in each inner ceramic tube; the electromagnetic heating assemblies are arranged between each inner ceramic tube and the corresponding outer ceramic tube; the heating power source is connected to the electromagnetic heating assemblies through wires; the powder feeder communicates with the inner ceramic tubes through powder feeding tubes, and after normal-temperature metal powder in the powder feeder enters the inner ceramic tubes through the powder feeding tubes, the normal-temperature metal powder is heated into high-temperature metal powder by the electromagnetic heating assemblies in the inner ceramic tubes; and the extension line of the laser beam and the inner ceramic tubes intersect at a molten pool on the surface of a workpiece to be cladded. According to the ultrahigh-speed laser cladding system and laser cladding method, ultrahigh-speed laser cladding technology based on improvement of the initial temperature of the metal powder is achieved on the basis of traditional powder laser cladding technology for the first time, and the problem that the cladding efficiency of the powder laser cladding technology is low is solved.

Description

technical field [0001] The invention belongs to the field of advanced manufacturing technology, and in particular relates to an ultra-high-speed laser cladding system and a laser cladding method. Background technique [0002] As an advanced manufacturing technology with high precision, high performance, low heat-affected zone and low dilution rate, powder laser cladding technology is widely used in the fields of metal parts surface preparation modified coating, surface defect repair and metal additive manufacturing. . The existing powder laser cladding technology uses metal powder and laser beams as raw materials and heat sources, and the laser beam melts the powder and the substrate to form a molten pool, and at the same time makes the molten pool and the substrate move relative to each other to form a cladding layer. Among them, the metal powder is at room temperature, and the heat source is pure laser heat source. In this kind of laser cladding system, if we want to imp...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an ultra-high-speed laser cladding system and laser cladding method. By innovatively arranging the powder heating laser cladding scheme, the original powder laser cladding technology based on improving the metal powder initial The ultra-high-speed laser cladding method of high temperature solves the problem of low cladding efficiency existing in the current powder laser cladding technology

Images