Heat preservation coil structure for directional single crystal precision casting furnace

Abstract

The invention discloses a heat preservation coil structure for a directional single crystal precision casting furnace, and particularly relates to the technical field of casting furnace heat preservation coils, the heat preservation coil structure comprises a heat preservation coil assembly installed on the outer side of a smelting chamber of the casting furnace, and the heat preservation coil assembly comprises an upper heat preservation coil and a lower heat preservation coil; the upper heat preservation coil and the lower heat preservation coil are distributed up and down and arranged on the outer side of the smelting chamber. The heat preservation coil assembly is divided into the upper heat preservation coil and the lower heat preservation coil, and different temperatures can be set at the same time, so that a product in the smelting chamber is located at the upper temperature and the lower temperature, and the crystallization time and the crystallization direction of an internal crystal phase are different according to different temperatures in the product cooling and solidification process. Different temperatures are set for the upper heat preservation coil and the lower heat preservation coil according to the characteristics, so that the crystallization direction of the product is controlled, and the product meeting the process requirement is produced.

Description

technical field [0001] The invention relates to the technical field of heat preservation coils for casting furnaces, and more particularly to a heat preservation coil structure for directional single crystal precision casting furnaces. Background technique [0002] The directional single crystal precision casting furnace uses the principle of electromagnetic induction and current thermal effect to heat and melt the material in the melting chamber into liquid metal. Then pour the liquid metal into the mold shell to maintain a certain temperature requirement in the heat preservation bag, and finally realize the directional solidification and crystallization of the casting through the crystal pulling mechanism. [0003] The directional single crystal precision casting furnace establishes a temperature gradient in a specific direction in the investment casting shell, so that the molten alloy solidifies according to the required crystalline orientation in the opposite direction t...

AI Technical Summary

Problems solved by technology

[0004] The products of directional single crystal precision casting furnace need to carry out precise temperature control and cooling during the cooling process to ensure that the products complete the crystallization and solidification according to the requirements, but the traditional heat preservation coil only has a single function of heat preservation and slow down cooling (traditional heat preservation coil structure such as Figure 7 shown), so that the overall heat preservation of the product is cooled at the same temperature, which cannot meet the technical requirements of the product for its internal crystal structure, direction, etc.

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