Fairing part and method for forming thin-wall fairing part through selective laser melting

Abstract

The invention relates to the technical field of preparation of fairing parts, and provides a fairing part and a method for forming a thin-wall fairing part through selective laser melting. The method comprises the steps that data modeling is conducted on the fairing part; a residual stress field and a displacement field of the fairing part are obtained through process simulation, and a supporting structure is added to an area with displacement and stress exceeding certain values; slicing processing is performed to obtain two-dimensional section data information; the two-dimensional section of the part is scanned layer by layer, and selective laser melting forming manufacturing of the fairing part is completed; heat treatment is conducted; and the support is removed and surface treatment is conducted to obtain a finished product. According to the fairing part and the method, the problems that a thin-wall structural part is prone to warping deformation during forming and the support is difficult to remove can be solved; and the additive manufacturing cost can be reduced, the success of the part is ensured, and an effective supporting design method is provided for the thin-wall fairing part.

Description

technical field [0001] The invention relates to the technical field of fairing parts preparation, in particular to a fairing part and a method for forming a thin-walled fairing part by laser selective melting. Background technique [0002] In areas subject to thermal loads such as aircraft suspension and APU, the fairing skin usually adopts heat-resistant metal thin-walled structures such as titanium alloys or high-temperature alloys. The main characteristics of this structure include: thin-walled structure, complex shape, various types, and size The stability and mechanical properties are high, and the dimensional accuracy of the product installation surface and space angle is high. Based on the limitations of traditional manufacturing processes, the fairing components are mainly composed of structural parts such as frames, skins, and ribs. The main sheet metal parts and machined parts of the forming scheme are connected by riveting. This kind of structure is relatively he...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to overcome at least one of the deficiencies of the prior art, and provide a fairing part and a method for forming a thin-walled fairing part by laser selective melting. Formed by laser selective melting technology, this method can not be constrained by the process of traditional manufacturing methods, and the fairing can be manufactured according to the optimal theoretical shape, and the deformation can be controlled through process optimization. The added support structure is easy to remove, which can solve the problem of forming thin-walled structural parts Easy to warp and deform, difficult to remove the support

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