Multi-axis laser cladding anti-gravity deflection ring cone focusing powder feeding nozzle

Abstract

The invention provides a multi-axis laser cladding anti-gravity deflection ring cone focusing powder feeding nozzle. The nozzle comprises a water-cooling connecting part, a gas-equalizing powder-conveying conical core, an outer thin converging conical cover, a conical cover locking ring, a protective gas annular cavity, a powder inverted-frustum-shaped annular seam converging cavity, a triangularinverted-cone-shaped annular equalizing gas channel and a cooling water annular cooling structure cavity; the water-cooling connecting part is fixedly installed in the middle of the nozzle; the gas-equalizing powder-conveying conical core and the outer thin converging conical cover are arranged on the outer side wall of the water-cooling connecting part from inside to outside; the conical cover locking ring is fixedly installed on the top end side walls of the gas-equalizing powder-conveying conical core and the outer thin converging conical cover; the cooling water annular cooling structure cavity is formed between the outer side wall of the water-cooling connecting part and the inner side wall of the gas-equalizing powder-conveying conical core; and the protective gas annular cavity, thetriangular inverted-cone-shaped annular equalizing gas channel and the powder inverted-frustum-shaped annular seam converging cavity are arranged on the outer side wall of the gas-equalizing powder-conveying conical core and the inner side wall of the outer thin converging conical cover from top to bottom. Compared with conventional technologies, the nozzle has the advantage that the problem of segregation of powder fed by the nozzle of a cladding head due to gravity during multi-axis laser cladding of a curved surface can be solved.

Description

technical field [0001] The invention belongs to the technical field of laser cladding, in particular to a multi-axis laser cladding anti-gravity deflection ring cone focusing powder feeding nozzle. Background technique [0002] At present, the powder feeding nozzles of laser cladding heads on the market usually have powder feeding pipes bypassing single powder pipes directly to the molten pool, coaxial multi-channel convergence or multiple channels entering the cloud chamber cavity, and then the powder is fully stirred, and then the inverted cone There are two ways in which the shaped annular gap converges into the molten pool, and the powder utilization rate and cladding layer quality of the second way are increased compared with the first way. [0003] In the field of laser cladding in the case of annular powder feeding using the second method, with the market demand, the cladding technology has developed from simple plane and cylindrical surfaces to more complex curved su...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned multi-axis laser cladding curved surface, the axis of the laser cladding head and the horizontal plane are 0° to 90°, and the powder feeding of the nozzle of the cladding head is segregated due to gravity, the invention provides a multi-axis laser cladding Anti-gravity deflection ring cone focusing powder feeding nozzle, including water-cooled connection part, uniform gas powder feeding cone core, outer thin convergent cone cover, cone cover lock ring, protective gas annular cavity, powder inverted cone-shaped annular seam convergent cavity, triangular Inverted cone-shaped annular equally divided air channel, cooling water ring cooling structure cavity; the water cooling connection part is fixedly installed in the middle of the nozzle, and the air distribution powder cone core and the outer thin film are installed sequentially along the outer wall of the water cooling connection part from inside to outside. Converging cone cover, the cone cover lock ring is fixedly installed at the junction of the gas uniform powder conveying cone core and the top side wall of the outer thin converging cone cover;

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