3D printing forming casting method for large-scale complex thin-wall high-temperature metal component

Abstract

The invention provides a 3D printing forming casting method for a large-scale complex thin-wall high-temperature metal component. The method comprises the data acquisition process, the process designand forming and simulation optimization pouring process, the SLS wax model 3D printing process, the casting system evanescent mode foam forming process, the process gating system assembling and shellmaking process, the roasting and demolding process, the vacuum casting process, the pressurization solidification process, the metal component cleaning process, and grinding and polishing process. According to the casting method, the advantages of the 3D printing process, the investment casting process, the evanescent mode casting process are combined, so that a reliable technical scheme is provided for rapid preparation of the large-scale complex thin-wall high-temperature metal component; the problems that the air permeability is poor, the feeding distance is insufficient are solved by adopting the vacuum pressurizing pouring process; and the production period of the large-scale complex thin-wall high-temperature metal component is shortened from 1-3 months to less than 10 working days,and rapid production of the large-scale complex thin-wall high-temperature metal component is realized.

Description

technical field [0001] The invention belongs to the field of metal forming methods, and in particular relates to a casting method for forming large complex thin-walled high-temperature metal components by 3D printing. Background technique [0002] In the research and development process of large complex high-temperature metal components, the method of opening molds is mostly used for investment casting or sand casting. There are many difficulties in the production process. Leading to failure, the sand casting surface and size are difficult to meet the requirements. 3D printing wax pattern instead of mold wax pattern is mainly used for investment casting silicon melt process, water glass process, gypsum process (low temperature aluminum, copper, gold, silver, zinc and other medium and low temperature alloys), due to the strength of the wax pattern, shell For reasons such as mold making, roasting and demoulding, 3D printing of small and medium-sized wax models to form metal c...

AI Technical Summary

Problems solved by technology

[0002] In the research and development process of large complex high-temperature metal components, the method of opening molds is mostly used for investment casting or sand casting. There are many difficulties in the production process. The investment casting process is very difficult and often due to the shell strength and crack Leading to failure, the surface and size of sand casting are difficult to meet the requirements

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