Annular laser cladding nozzle

Abstract

The invention discloses an annular laser cladding nozzle comprising an inner core and an outer sleeve arranged outside the inner core in a sleeving mode, a laser channel is formed in the center of the inner core, and an opening allowing laser to be emitted out is formed in the center of the inner core; a material mixing chamber is arranged between the inner core and the outer sleeve, and a second conveying channel for outputting metal powder is arranged between the material mixing chamber and the opening; the material mixing chamber is communicated with more than one first conveying channel for inputting the metal powder; and the inner core is also provided with grooves facing the material mixing chamber. Preferably, the number of the first conveying channels is two. The multiple grooves are formed in the surface of the inner core at equal intervals, when powder and gas are mixed and enter the material mixing chamber, due to the existence of the grooves, the powder continuously impacts the grooves and forms cyclone, the powder continuously impacts back and forth in the material mixing chamber, and therefore uniform powder feeding is achieved. In order to improve the powder mixing and feeding effect, the preferable scheme of the material mixing chamber and the second conveying channel is that the material mixing chamber and the second conveying channel are of a rotary structure with the central axis of the laser channel as the center. The grooves are arranged in the inner core in an annular array.

Description

technical field [0001] The invention belongs to the field of laser cladding, and in particular relates to an annular laser cladding nozzle. Background technique [0002] Laser cladding technology is a new surface modification technology. The processing process is to add external materials to the molten pool formed after the substrate is irradiated by laser through synchronous or preset materials, and make the two solidify rapidly together. Process method for forming cladding layer. [0003] In the application of laser processing technology, the laser nozzle is one of the most critical equipment. The uniformity of the powder injected from the nozzle largely determines the processing quality of the equipment. However, at present, laser cladding nozzles often have defects such as complicated processing procedures, complicated operations, and uneven powder feeding. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide an...

AI Technical Summary

Problems solved by technology

However, at present, laser cladding nozzles often have defects such as complicated processing procedures, complicated operations, and uneven powder feeding.

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