Moving door device for large electron beam cold hearth

Abstract

The invention discloses a moving door device for a large electron beam cold hearth. The moving door device comprises a moving door trolley frame, a pair of in-hearth rail and out-hearth rail, and a moving door trolley drive device, wherein the moving door trolley frame is constructed by a flat vehicle frame and a vertical hearth door in a combination manner, and a folding vehicle wheel combination is arranged on the lower part of the flat vehicle frame; a crucible for the electron beam cold hearth is arranged in a front area on the moving door trolley frame, a chute trolley frame is arranged in a middle area, and a feed chute is installed on the chute trolley frame; and the moving door trolley frame adopts a built-in water channel cooling structure, water inlet nozzles and water outlet nozzles connected with cooling water channels of the crucible, the chute and the hearth door are formed in the hearth door respectively, and the water inlet nozzles and the water outlet nozzles are connected with a cooling system through a moving door main water inlet tube and a moving door main water outlet tube. The moving door device is convenient to detach and maintain, and capable of greatly reducing the equipment damage rate, thus effectively increasing the production efficiency.

Description

technical field [0001] The invention relates to a movable door device of a large-scale electron beam cooling hearth furnace. Background technique [0002] Electron beam cold bed smelting is a metallurgical technology that combines electron beams with a cold hearth and smelts under high vacuum. The high-current electron beam of the electron gun is mainly used as the melting heat source, and the water-cooled copper crucible is used as the cooling bed, and the kinetic energy of high-speed electrons is converted into heat energy to melt, refine and cast the metal into ingots. Its working principle is to heat the cathode (tantalum or tungsten wire) in a high vacuum environment, and the cathode will emit a large number of thermal electrons. At this time, if a large potential difference is maintained between the cathode and the anode, the electrons will be accelerated under the action of the electric field. Electrical energy is converted into kinetic energy of electrons. Electric...

AI Technical Summary

Problems solved by technology

At present, it is inconvenient to disassemble the water-cooled copper crucible of most electron beam cooling bed furnaces, and because the chute is relatively close to the crucible when feeding, during the melting process, the high-temperature solution in the crucible will splash out and damage the feeding chute, causing users unnecessary loss

Have again: the cooling equipment that the equipment in the past is equipped with is more complex (each faucet on the furnace door is connected with the cooling system, causes many metal hose connections in the furnace to criss-cross), and the connection of too many faucets and flexible pipes not only takes up space, Waste of materials will also bring a lot of trouble to maintenance

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