High-power electronic gun

Abstract

The invention provides a high-power electronic gun comprising a built-in electronic gun core which is arranged on an upper barrel of a gun chamber, wherein an anode seat is arranged below the upper barrel of the gun chamber, and an anode of an electronic emission system is arranged on the anode seat; the bottommost part of the electronic gun is a gun seat of the electronic gun; an inner cover for bombarding current bunching is arranged outside a lamp filament of the gun core; two groups of magnetic lenses and blocked holes are arranged in a light path system of electron beams, wherein the magnetic lenses and the blocked holes are matched; a coiling chamber of first magnetic lenses is arranged between the anode seat and a lower barrel of the gun chamber, a water-cooling blocked hole seat is arranged between the lower barrel and the seat, and the blocked holes are arranged on the blocked hole seat; deflecting and scanning coils are arranged on the gun seat, and coils of second magnetic lenses are arranged above the defecting and scanning coils; and a gun cover is additionally arranged outside the gun core, a draught fan is arranged on the gun cover, and a safety hood, a group of air barrels and an outer cover assembly arranged outside a cathode encircle a gun core body to form a cooling wind path. According to the invention, the problem of the urgent need for the high-power electronic gun in the existing industrialization is solved.

Description

technical field [0001] The invention relates to an electron gun for an electron beam melting furnace, especially an electron gun with a maximum stable working power of 800kw. Background technique [0002] The electron gun of the electron beam melting furnace is the equipment used in the smelting process to generate the electron beam. It is mainly used to extract the electron beam with a certain direction and spot diameter required by the smelting process. The electron beam has a narrow melting zone, high energy density and melting zone. The advantages of large internal average temperature gradient have been successfully used in W, Mo, Ta, Nb and other refractory metals, alloys and their compounds and composite materials (these materials have a unique high melting point and some other unique properties, therefore, It plays an important role in the national economy, especially in the fields of national defense, aerospace, electronic information, energy, chemical defense, metal...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide an 800kw high-power electron gun, which solves the urgent demand for high-power electron guns in the current industrialization, and at the same time solves the problem that the diameter of the electron beam is relatively large and hits the components of the electron gun optical path system due to the increase in power , and solved a series of problems caused by the large diameter of the electron gun base by changing the deflection scanning structure, and also solved the serious discharge phenomenon caused by the unclean gun chamber

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