Precise molding method for complex internal flow passage structure

Abstract

The invention discloses a precise molding method for a complex internal flow passage structure. By building a precise molding device for the complex internal flow passage structure and composed of a contour casting die (1), a prefabricated three-dimensional internal flow passage structure (2) and a fusible supporting frame (3), thin-wall metal pipes with high precision and smooth internal surfacesare adopted to be precisely wound into the three-dimensional internal flow passage structure, the high-precision fusible supporting frame is used for realizing precision positioning of a three-dimensional internal flow passage, and the structural position precision of the three-dimensional internal flow passage structure can be kept in the casting process. By utilizing differences between the three-dimensional internal flow passage structure and a three-dimensional outer contour structural material in melting points, erosion and deformation of the interior of the three-dimensional internal flow passage can be avoided. According to the precise molding method for the complex internal flow passage structure, the problems that in general manufacturing methods, the functionally integrated internal flow passage structure is difficult in a complex internal flow passage molding, low in percent of pass, poor in surface precision of the internal flow passage and the like are solved.

Description

technical field [0001] The invention relates to the technical field of pipe structure forming, in particular to a method for precisely forming a complex inner flow channel structure. Background technique [0002] The inner runner structure is the main structure type of heat control and heat exchange. With the reduction of weight and the improvement of heat exchange efficiency, the inner runner structure and the complex main load-bearing structure need to be integrated. The shape of this kind of inner runner structure with integrated functions is complicated and it is very difficult to manufacture. [0003] At present, the complex inner runner structure is usually realized by casting or additive manufacturing. When casting is used, it is necessary to design a very complex mold core, which is difficult to demould, difficult to realize the complex inner runner structure manufacturing, and the pass rate is very low; However, for the complex inner runner structure realized by ad...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for precisely forming complex inner runner structures, which solves the problems of difficult forming of complex inner runners, low pass rate, and poor surface precision of inner runners in the manufacture of functionally integrated inner runner structures.

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