Nozzle of plasma spray welding gun

Abstract

The invention provides a nozzle of a plasma spray welding gun. The nozzle comprises an upper shell, an electrode and a lower shell. The upper shell is provided with a mounting channel penetrating through the two end faces of the upper shell, and the upper shell is provided with an air inlet channel allowing ion gas to pass through. The electrode is inserted into the channel, a gap is formed between the electrode and the upper shell, and the air inlet channel communicates with the gap. The upper shell and the lower shell are detachably connected. A cavity channel penetrating through the two end faces of the lower shell is formed in the lower shell and communicates with the mounting channel. The cavity channel comprises an output port which is located in the end face, away from the upper shell, of the lower shell. An inner powder feeding channel and an outer powder feeding channel are arranged in the lower shell. One end of the inner powder feeding channel communicates with the outside, and the other end of the inner powder feeding channel communicates with the cavity channel. The outer powder feeding channel penetrates through the lower shell, and one port of the outer powder feeding channel is formed beside the output port. The nozzle overcomes the defects that high-entropy alloy powder is multiple in variety and large in powder characteristic difference, and has the advantages that spare and accessory parts are convenient to replace, and the spray welding process effect is good.

Description

technical field [0001] The invention relates to the technical field of additive equipment, and in particular, to a nozzle of a plasma spray gun. Background technique [0002] High-entropy alloy is a new type of alloy. Different from traditional alloys, high-entropy alloy has four or more principal elements, and the content of each principal element is 5% to 35% (atomic content). High-entropy alloys also have four major effects that are different from traditional alloys: high-entropy effect, diffusion retardation effect, lattice distortion effect and "cocktail" effect, which make high-entropy alloys have high strength, high hardness, wear and corrosion resistance, high temperature With excellent properties such as softening resistance and oxidation resistance, it is recognized as one of the most promising materials in the 21st century. [0003] Using the traditional preparation process to prepare high-entropy alloy structural parts will cause material waste, which is especia...

AI Technical Summary

Problems solved by technology

[0006] Based on this, in order to solve the problem that the nozzle of the traditional plasma arc spray gun cannot meet the requirements of improving the quality of the high-entropy alloy preparation process, the invention provides a nozzle of the plasma spray gun, and its specific technical scheme is as follows:

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