Dewaxing structure for seed technique seeding module

Abstract

The invention relates to a dewaxing structure for a seed technique seeding module, and belongs to the technical field of investment casting. The dewaxing structure for the seed technique seeding module comprises a pouring cup, a transverse pouring gate made of wax, a straight pouring gate made of wax, an inner pouring gate made of wax and a bottom plate, wherein the bottom of the pouring cup communicates with the transverse pouring gate, the bottom of the transverse pouring gate communicates with the top end of the straight pouring gate arranged vertically, and the bottom end of the straight pouring gate penetrates through the bottom plate and then is blocked tightly through a first plug assembly. The dewaxing structure has the beneficial effects that a dewaxing pin is arranged at a seed seeding device or a flow gate which cannot be completely dewaxed through the straight pouring gate so that the wax can be completely discharged, the mold shell dewaxing pressure is reduced, and mold shell spalling caused by wax material accumulation and expansion in the mold shell dewaxing process is reduced; and an upright mold shell placing and dewaxing mode reduces the influence on a mold core in a mold shell in the dewaxing process is reduced, and can effectively prevent the mold core from being broken and deviated.

Description

technical field [0001] The invention belongs to the technical field of investment casting, and in particular relates to a wax removal structure of a seed crystal seeding module. Background technique [0002] The thrust-to-weight ratio, life and efficiency of aero-engines are closely related to the development and application of single-crystal blades, and single-crystal blades have strong temperature bearing capacity, high-temperature strength, corrosion resistance, creep resistance and fracture resistance, and have become advanced aero-engine blades. main choice. At present, the crystal selection method and the seed crystal method are mostly used to prepare single crystal blades. Compared with the crystal selection method, the seed crystal method has the ability to accurately control the crystal direction of crystal growth, good single crystal integrity, less difficulty in module combination, and strong load-bearing capacity. , The module is not easy to break during the coa...

AI Technical Summary

Problems solved by technology

However, the formwork seeded by the seed crystal method has the problem of difficult dewaxing because the bottom plate is only connected to the seed crystal and the sprue

The inverted wax discharge method of the mold shell is unable to bear the load and may easily cause the mold shell to break; the lying wax discharge method is prone to residual wax, and it is also very easy to cause core deviation and core breakage in the mold shell

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