Centrifugal laser cladding powder feeding device and laser cladding powder feeding method

Abstract

The invention relates to the technical field of laser cladding, and particularly relates to a centrifugal laser cladding powder feeding device. The centrifugal laser cladding powder feeding device comprises a funnel, a powder feeding disc, a powder scraping disc and a driving part, wherein the funnel is provided with an upper opening, and the wall surface extending downwards from the upper opening is gradually narrowed to form a lower opening; the powder feeding disc is constructed to be in a disc shape and is horizontally arranged in the funnel, and a gap is formed between the powder feeding disc and the wall surface of the funnel; the powder scraping disc is arranged above the powder feeding disc in an attached mode; and the driving part is used for driving the powder feeding disc to rotate relative to the powder scraping disc. According to the centrifugal laser cladding powder feeding device, a powder feeding mode of centrifugation and gravity is adopted, so that the problem of powder loss caused by carrier gas powder feeding is solved, and the powder utilization is greatly improved; and a plurality of first through holes are formed, so that the powder feeding amount is equivalent to multiple times of the powder feeding amount of a traditional powder feeder, and different powder can be fed at the same time through a plurality of gears.

Description

technical field [0001] The invention relates to the technical field of laser cladding, in particular to a centrifugal laser cladding powder feeding device and a laser cladding powder feeding method. Background technique [0002] Laser cladding technology is a kind of rapid heating and melting of metal powder and substrate surface under the action of laser beam, and forms a layer of high-performance alloy coating on the substrate surface after cooling, which can significantly improve the wear resistance and durability of the substrate surface. corrosion properties. Due to its great economic benefits, it is currently being used more and more widely in industrial production. [0003] In the process of laser cladding, the powder feeding equipment conveys the powder, and the metal powder reaches the workpiece through the nozzle on the laser head. Among them, the common powder feeding equipment is divided into two forms: carrier gas and gravity. The former needs to rely on the g...

AI Technical Summary

Problems solved by technology

Among them, the common powder feeding equipment is divided into two forms: carrier gas and gravity. The former needs to rely on the gas path as the carrier. When the powder is sent out, there will be an air pressure effect, which will cause the powder to be partially scattered on the surface of the workpiece, thereby reducing the powder. Utilization

However, the powder feeding mechanism of traditional gravity powder feeding is mostly a single powder feeding, which cannot meet the technical requirements of super large powder cladding and multiple powder feeding

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