Synchronous partitioned powder feeding laser cladding system and method for dissimilar materials with same light spot

Abstract

The invention provides a synchronous partitioned powder feeding laser cladding system and method for dissimilar materials with a same light spot. The system comprises a laser cladding processing head, a laser spot controller, a powder feeding device and a powder feeding controller, and is used for controlling powder feeding; a double-side powder feeding mode of array type independent powder pipes is adopted in the powder feeding device, the length and / or width of powder spots can be adjusted through powder feeding control signals, light spots are optimally matched with the powder spots, efficient and high-quality synchronous partition printing of dissimilar materials is achieved, the powder pipes on two sides synchronously feed powder to the positions of the laser light spots in a one-to-one symmetry mode, at least one pair of powder pipes for feeding powder to the same position conveys different powders, the two powders are subjected to a melting metallurgical reaction in a powder convergence point area, a metallurgical bonding area is formed and serves as a transition area, and therefore, broadband adjustable multi-pipe synchronous powder feeding is achieved, synchronous partition paraxial powder feeding 3D printing under the same light spot can be achieved efficiently, and the cladding efficiency and quality are improved.

Description

technical field [0001] The invention relates to the technical field of laser additive manufacturing, in particular to a laser cladding system and method for synchronous partition feeding of different materials in the same spot. Background technique [0002] Laser cladding additive manufacturing, by adding cladding materials on the surface of the substrate, and using a high-energy-density laser beam to melt it together with the thin layer on the substrate surface, forms a metallurgically bonded cladding layer on the surface of the base. Through the application of laser cladding additive manufacturing technology, high-performance surface coatings can be produced on the base material, such as high-strength, wear-resistant coatings, which can significantly improve the wear resistance, corrosion resistance, heat resistance, and oxidation resistance of the base surface. and other properties to achieve the purpose of surface modification or repair. [0003] In the process of indus...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the efficiency problems of delamination and the need for secondary printing in the prior art by using premixing for printing of different materials, and propose a laser cladding system and method for synchronous partition feeding of different materials in the same spot, which can be printed in the same spot Different powder materials are formed at different positions on the layer section, and two or more powder materials (metal powder materials) can be printed simultaneously in different areas of a single lane width through a laser cladding processing head without the need for separate printing, thus the printing efficiency can be improved by this implementation, and a better coating profile can be obtained

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