Method for preventing deformation of titanium alloy control surface formed by selective laser melting and control surface thereof

Abstract

The invention discloses a selective laser melting forming titanium alloy control surface anti-deformation method and a control surface thereof, and relates to the field of titanium alloy additive manufacturing. The method comprises the steps that S1, a control surface model is established, and the control surface deformation trend is analyzed; s2, designing a lattice structure model along the easy-to-deform part of the control surface; s3, the lattice structure model and the control surface model are combined, and a to-be-printed model is obtained; and S4, after the to-be-printed model is formed, the lattice structure is removed, and the control surface is obtained. According to the anti-deformation method for the titanium alloy control surface formed through selective laser melting and the control surface thereof, the anti-deformation design of the control surface skin is achieved by constructing a reasonable lattice structure support, rapid forming of the control surface skin framework is achieved through the selective laser melting method, the deformation problems of skin bulging or sinking and the like are solved, and the stability of the control surface is improved. And the profile precision and the product qualification rate are improved.

Description

technical field [0001] The invention relates to the field of titanium alloy additive manufacturing, in particular to a method for preventing deformation of a titanium alloy rudder surface formed by laser selective melting and the rudder surface. Background technique [0002] As a typical representative of additive manufacturing (3D printing) technology, laser selective melting (SLM) technology is not limited by the complexity of parts, and can effectively make up for the shortcomings of traditional processes and realize the "free growth" of highly complex structural parts. The aerospace field has broad application prospects. [0003] A titanium alloy rudder surface has a grid + skin structure, the outer dimensions of the part are 900×700×50mm, and the interior is a grid skeleton structure. Considering the structural characteristics of the rudder surface, due to the large size, large grid size and thin skin, when the traditional method is used to manufacture, it is prone to ...

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Problems solved by technology

[0004] In view of this, the present invention provides a method for anti-deformation of titanium alloy rudder surface by laser selective melting and forming, using UG three-dimensional modeling software and Magics pre-processing software to realize the anti-deformation design of rudder surface skin by constructing a reasonable lattice structure support , and realize the rapid forming of the skin skeleton of the rudder surface through the laser selective melting method, solve the deformation problems such as skin bulges or depressions, and improve the surface accuracy and product qualification rate

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