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

A laser selective melting, titanium alloy technology, applied in the direction of process efficiency improvement, energy efficiency improvement, additive manufacturing, etc., to achieve the effect of improving profile accuracy and product qualification rate

Pending Publication Date: 2022-03-18
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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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

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

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Embodiment

[0056] The anti-deformation method of the rudder surface of the present invention will be described in detail below by a specific embodiment:

[0057] Step 1: Lightweight design of the rudder surface

[0058] The structure of the rudder surface is designed in UG modeling software. The main frame of the rudder surface adopts a grid structure, and powder holes of different sizes are distributed on the grid ribs. The grid skeleton and skin are combined into an integral structure, and powder holes are reserved at the bottom of the rudder surface where the internal cavity is connected to remove internal residual powder.

[0059] Step 2: Design of rudder surface 3D printing process

[0060] Taking the bottom surface of the rudder shaft as the forming bottom plane, solid strong supports are added near the powder outlet at the bottom of the rudder surface, and solid supports are added at the front and rear edges to increase the structural strength. The thickness of the bottom solid ...

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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 ...

Claims

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Application Information

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IPC IPC(8): B22F10/28B22F10/47B22F10/38B33Y10/00B33Y80/00
CPCB22F10/28B22F10/47B22F10/38B33Y10/00B33Y80/00Y02P10/25
Inventor 刘莹莹钱远宏吴海峰焦世坤崔朝兴
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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