A Mixing Nozzle with Surface Shot Peening Strengthening

Abstract

The invention provides a mixing nozzle for surface shot-peening strengthening, which includes a liquid nozzle and a shot-peening nozzle, the liquid nozzle is installed on a shell, and is used to input high-pressure liquid into the inside of the shell; the shell is provided with a first spray nozzle The pellet feeding section is used to input the shot blast into the shell; the shot blast nozzle is installed on the shell to output the solid-liquid mixture of shot peen and liquid; the output end of the shot blast nozzle is provided with a number of The second shot feed section of the cloth is used to mix the shot with the solid-liquid mixture. The interior of the water nozzle is provided with a constriction section and a diffusion section sequentially according to the direction of liquid flow; the contraction angle of the constriction section is 8°-12°, and the diffusion angle of the diffusion section is 7°-10°. The shot blasting of the invention is mixed with high-pressure water to form a solid-liquid two-phase flow, and the impact energy generated by two accelerations can reduce the corrosion and fracture of parts and eliminate friction fatigue, uniformly increase the surface roughness of parts, and improve the surface performance of parts.

Description

technical field [0001] The invention relates to the technical field of surface strengthening, in particular to a mixing nozzle for surface shot peening strengthening. Background technique [0002] At present, the surface strengthening technology of metal parts includes shot peening and sandblasting technology, etc. Shot peening is a cold working process that bombards the surface of the workpiece with pellets and implants residual compressive stress to improve the fatigue strength of the workpiece. It is widely used to improve the mechanical strength of parts As well as wear resistance, fatigue resistance and corrosion resistance. The existing surface strengthening treatment device has the following problems: [0003] 1. A common surface strengthening device is a shot blasting machine, which uses a large amount of shot peening in actual engineering. The surface quality of the shot peening material used cannot be guaranteed, and it is easy to reduce the surface accuracy of pa...

AI Technical Summary

Problems solved by technology

[0003] 1. The common surface strengthening device is a shot peening machine, which uses a large amount of shot peening in actual engineering. The surface quality of the shot peening material used cannot be guaranteed, and it is easy to reduce the surface accuracy of the parts, and the strengthening effect is poor.

[0004] 2. The traditional shot blasting machine equipment has a lot of pollution, which does not meet the theme of technology emission reduction in today's society

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