Sleeve-type water-cooled crucible and vacuum electron beam melting device

Abstract

The invention discloses a sleeve type water-cooled crucible comprising a crucible body and a base. A material tank is formed in the top of the crucible body, and a plurality of water holes are distributed in the bottom of the crucible body; every two of n water holes constitute a set and communicate through a water groove, wherein n is an even number; the base is fixedly arranged at the bottom of the crucible body, seals lower ports of the water holes and comprises a base plate provided with a plurality of through holes; the water grooves do not directly communicate mutually; communicating parts do not directly communicate mutually; and the water holes, the water grooves, water guide pipes and the communicating parts form a whole one-way channel. A vacuum soldering structure is abandoned, no weld exists in the crucible body, the potential safety hazard of water leakage is avoided, the reliability of the device is improved, and the machining cost is reduced; the circulating water channel is formed by drilling the water holes and internally embedding the water guide pipes so that machining precision can be guaranteed; and the cooling area of the water channel can be flexibly adjusted by adjusting the diameters and positions of the water holes, so that the cooling area is increased, and the requirements of different heat loads are met.

Description

technical field [0001] The invention relates to a crucible, in particular to a casing type water-cooled crucible, a vacuum electron beam melting device and a vacuum electron beam melting device. Background technique [0002] Vacuum metal smelting and purification technology. In the evaporation system, a water-cooled welded copper crucible is used as the carrier of the evaporation heat source. Copper has very good thermal conductivity. Under water-cooling conditions, it can well reduce its own temperature and ensure performance. The existing cooling water channel generally adopts the water channel structure of bottom-in and top-out. [0003] Chinese patent CN 204987858 U discloses a water-cooled crucible for an electron beam melting furnace, including a base, the upper end of the base forms a convex ring, the outer water jacket and the lower end of the jacket are connected to the top surface of the convex ring, and the lower end of the inner water jacket is inserted into the ...

AI Technical Summary

Problems solved by technology

[0004] Although the above structure overcomes the temperature of local evaporation, the formation of the entire waterway needs to be realized by vacuum brazing, which has high processing costs, is limited by the heat load, and has potential safety hazards of water leakage, which affects the reliability of the evaporation system.

Images