Salt core manufacturing device and method for pressure casting

Abstract

The invention provides a salt core manufacturing device and method for pressure casting. The salt core manufacturing device comprises a melting holding furnace, a melting crucible, a casting workbench, a die, a material pipe, a supporting frame, a lifting hydraulic cylinder, at least one compressed air pipe, two lateral moving hydraulic cylinders, a hydraulic power pack and an electric cabinet. Aheating piece is arranged on the inner wall of the melting holding furnace. The melting crucible is arranged in the melting holding furnace in an inserted mode, a crucible cover is arranged on the melting crucible in a covering mode, and a liquid outlet and an air inlet are formed in the surface of the crucible cover. The casting workbench comprises a working support and a workbench plate, and theworkbench plate is provided with a liquid outlet opening. A cavity is formed in the inner side of the die, two side plates and an upper cover plate are assembled and detachably connected, and a liquid inlet is formed in a bottom plate. The supporting frame comprises two vertical rods and a cross rod, and the two ends of a lifting cross plate are arranged on the two vertical rods in a sleeving mode. The lifting hydraulic cylinder is erected on the cross rod. The hydraulic power pack comprises a hydraulic source and a hydraulic pump. The salt products formed by the manufacturing device is compact inside and has no porosity, shrinkage or other defects, after the solidification is completed, the die is opened and the product is taken out, remanufacturing can be performed, the ability of continuous production is achieved, and the production efficiency of a salt core is improved.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a salt core manufacturing device for pressure casting and a manufacturing method thereof. Background technique [0002] In some precision castings such as automobiles and aero-engines, for those inner walls and small holes whose shapes are particularly complex and cannot be manufactured by machining or other similar molding methods, casting technology can be used for direct molding. [0003] This requires that the cores used not only have high strength, high dimensional accuracy and high stability, but also have good collapsibility for easy cleaning. For castings with complex inner cavities, low-pressure or normal-pressure casting methods are used, such as sand casting, gravity metal casting, low-pressure casting, etc., and widely used sand cores can meet their requirements. For high-pressure casting, the strength of the sand core is difficult to meet the requirement...

AI Technical Summary

Problems solved by technology

[0007] It can be seen from this that the production process is divided into multiple processes, and it takes a long time, especially the sintering process, which needs to be fed into the furnace in batches, and the temperature should reach above 800°C, and it must be kept for enough time to wait for the salt products to be sintered into one. For industrial production needs, the efficiency is too low, so there is a need for a more efficient way to cast salt cores

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