Directional solidification device and method of single crystal casting and casting equipment

Abstract

The invention relates to the technical field of casting of single crystal castings, and discloses a directional solidification device and method of the single crystal casting and casting equipment. The directional solidification device of the single crystal casting comprises a hot chamber, a cold chamber, a lifting platform and a bottom plate, wherein casting mold shells which are arranged in parallel are arranged on the bottom plate, and the lifting platform is used for driving the casting mold shells arranged on the bottom plate to move from the hot chamber to the cold chamber so as to undergo directional solidification. According to the directional solidification device of the single crystal casting, the closed configuration of the hot chamber and the cold chamber is achieved, so that the situations that due to the facts that a large amount of heat between the hot chamber and the cold chamber runs off and the temperature gradient is not high, the impurity crystal defect and the freckle defect are generated are avoided; and meanwhile, heating and cooling can be carried out on the casting mold shells which are arranged in parallel under the condition that the casting mold shells are completely symmetric and the same, so that the situation that the casting defect is generated in the shadow area due to the fact that the temperature condition of the inner side and the temperaturecondition of the outer side are not uniform during heating and cooling solidification of existing single-crystal castings is avoided, and the yield and the quality of the single crystal castings areimproved.

Description

technical field [0001] The invention relates to the technical field of single crystal castings, in particular to a directional solidification device, method and casting equipment for single crystal castings. Background technique [0002] The single crystal castings in the directional solidification device of the existing single crystal castings are all arranged in a ring shape, the heat transfer conditions of the single crystal castings are asymmetrical on the inside and outside, and casting defects are easily formed in the inner shadow area due to the shadow effect. At the same time, the existing The through-type structure of the hot and cold chamber of the directional solidification device will lose a large amount of heat and cause the temperature gradient to be low, resulting in miscellaneous crystal defects and freckle defects, resulting in poor yield and quality of existing single crystal castings. Contents of the invention [0003] In view of this, the present invent...

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Problems solved by technology

[0003] In view of this, the present invention provides a directional solidification device, method and casting equipment for single crystal castings, which solves the problems of the existing directional solidification devices for single crystal castings due to the asymmetry of the heat exchange conditions on the inside and outside of the single crystal castings and the problem of hot and cold chambers. Through-type structure leads to technical problems of poor yield and quality of single crystal castings

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