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Preparation method of titanium alloy thin-wall honeycomb structure

A honeycomb structure and titanium alloy technology, which is applied in the field of preparation of titanium alloy thin-walled honeycomb structure, can solve the problem of low flexibility, affecting the high-temperature performance of the honeycomb structure, limiting the geometric shape diversity of the honeycomb structure and further optimizing the structure of parts, etc. problems, to achieve a high degree of flexibility, excellent mechanical properties and corrosion resistance, and reduce the effect of stress accumulation

Active Publication Date: 2014-09-17
CAPITAL AEROSPACE MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressure brazing forming method has a low degree of flexibility and requires a large number of sets of special tools, which limits the diversity of the geometric shape of the honeycomb structure and the further optimization of the part structure. At the same time, the low melting point of the solder also affects the high-temperature performance of the honeycomb structure.

Method used

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  • Preparation method of titanium alloy thin-wall honeycomb structure
  • Preparation method of titanium alloy thin-wall honeycomb structure
  • Preparation method of titanium alloy thin-wall honeycomb structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the thin-walled titanium alloy honeycomb structure of the present invention adopts the selective laser melting forming method to prepare the thin-walled titanium alloy honeycomb structure. The selective laser melting forming technology is based on the basic idea of ​​rapid prototyping, that is, the way of layer-by-layer cladding / incremental manufacturing.

[0023] like figure 1 As shown, taking a titanium alloy thin-walled six-deformation honeycomb structure as an example, the size: 100mm × 100mm × 50mm, the wall thickness is 0.5mm, and the preparation method of a titanium alloy thin-walled honeycomb structure according to the present invention is used for processing. The steps are as follows, such as figure 2 Shown:

[0024] (a) First, establish a three-dimensional CAD model of the titanium alloy thin-walled honeycomb structure in the computer 1, and slice and layer the titanium alloy thin-walled honeycomb structure model according to the t...

Embodiment 2

[0033] like figure 1 As shown, taking a titanium alloy thin-walled six-deformation honeycomb structure as an example, the size: 100mm×60mm×30mm, the wall thickness is 0.15mm, and the preparation method of a titanium alloy thin-walled honeycomb structure according to the present invention is used for processing. The steps are as follows, such as figure 2 Shown:

[0034] (a) First, a three-dimensional CAD model of a titanium alloy thin-walled honeycomb structure is established in computer 1, and the titanium alloy thin-walled honeycomb structure model is sliced ​​and layered according to a layer thickness of 20 μm (specifically divided into 1500 layers), so that according to the thickness of each layer of titanium alloy The wall honeycomb structure is processed layer by layer;

[0035] (b) Convert the three-dimensional shape data of the titanium alloy thin-walled honeycomb structure of each layer into a series of two-dimensional profile data, and then determine the trajectory...

Embodiment 3

[0043] Taking a titanium alloy thin-walled six-deformation honeycomb structure as an example, the size: 100mm×40mm×60mm, the wall thickness is 0.8mm, and the specific steps of processing are as follows by using the preparation method of a titanium alloy thin-walled honeycomb structure according to the present invention. Such as figure 2 Shown:

[0044] (a) First, a three-dimensional CAD model of a titanium alloy thin-walled honeycomb structure is established in computer 1, and the titanium alloy thin-walled honeycomb structure model is sliced ​​and layered according to a thickness of 30 μm (specifically divided into 2000 layers), so that the titanium alloy thin-walled honeycomb structure model is sliced ​​and layered according to the thickness of each layer of titanium alloy. The wall honeycomb structure is processed layer by layer;

[0045] (b) Convert the three-dimensional shape data of the titanium alloy thin-walled honeycomb structure of each layer into a series of two-d...

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Abstract

The invention provides a preparation method of a titanium alloy thin-wall honeycomb structure. The preparation method comprises the steps that (a) a titanium alloy thin-wall honeycomb structure model is sliced and layered according to 20-30 mu m layer thickness; (2) titanium alloy powder is uniformly paved on a titanium alloy substrate, a laser beam which is emitted by a laser is used for selectively melting a titanium alloy powder layer according to the determined scan locus of the laser beam to complete the processing of one layer of titanium alloy thin-wall honeycomb structure; (c) the titanium alloy powder is paved on the layer of formed titanium alloy thin-wall honeycomb structure again, the laser beam which is emitted by the laser is used for selectively melting the titanium alloy powder layer according to the determined scan locus of the laser beam; (d) the titanium alloy thin-wall honeycomb structure is processed layer by layer, and the titanium alloy thin-wall honeycomb structure is finally formed. According to the method, the stress accumulation and the deformation of a forming piece in the forming process are reduced, the flexibility degree is high, and a thin-wall honeycomb component with variable honeycomb distance and a three-dimensional dot matrix structure can be prepared.

Description

technical field [0001] The invention belongs to the technical field of laser additive manufacturing, and relates to a method for preparing a titanium alloy thin-walled honeycomb structure. Background technique [0002] The honeycomb structure is a special structure with the characteristics of compression resistance, shock absorption, sound insulation, heat preservation, light weight, and high specific strength. It is widely used in aerospace, military and other fields. There are two traditional manufacturing methods of honeycomb structure, one is adhesive bonding, the connection method is physical combination, and its strength, service life and allowable working environment are largely restricted by the performance of the adhesive. In order to improve the strength of the honeycomb structure, the pressure brazing forming method is gradually developed. This method uses brazing to replace the bonding in the pressure forming method. The pressure brazing forming method has a low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11
Inventor 王国庆梁晓康陈济轮董鹏何京文赵衍华朱平萍
Owner CAPITAL AEROSPACE MACHINERY
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