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A method for additive manufacturing of titanium alloy thin-walled parts

A technology of additive manufacturing and thin-walled parts, which is applied in the direction of additive processing, process efficiency improvement, energy efficiency improvement, etc., can solve problems such as microcracks, and achieve the effect of improving mechanical properties

Active Publication Date: 2022-04-12
飞而康快速制造科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for additive manufacturing of titanium alloy thin-walled parts. The additive manufacturing method provided by the invention effectively solves the problem of microcracks in titanium alloy thin-walled parts. The mechanical properties of thin-walled parts are improved, and the dimensional accuracy of thin-walled structures is controlled within a reasonable range to the greatest extent, so that the prepared parts meet the requirements of aerospace use

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  • A method for additive manufacturing of titanium alloy thin-walled parts
  • A method for additive manufacturing of titanium alloy thin-walled parts

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Embodiment 1

[0071] This embodiment provides a method for additive manufacturing of aerospace engine rudder wing thin-walled parts using TA15 titanium alloy powder. The content [wt%] of each element component in the titanium alloy powder is shown in the following table:

[0072] C Al Zr Mo V Fe Si O N H Ti ≤0.03 6.5 2 1.2 1.6 ≤0.1 ≤0.05 ≤0.08 ≤0.03 ≤0.0125 margin

[0073] The described additive manufacturing method comprises the steps:

[0074] (1) Carry out three-dimensional modeling according to the solid structure of thin-walled parts to obtain a solid model, add ribs on the outer surface of the solid model to obtain an additive model, design a 2mm hole at the connection between the rib and the solid model, and the distance between adjacent holes The hole spacing is 6mm, and the additive model is sliced ​​and layered, and the slice thickness is 0.04mm;

[0075] (2) Baking the TA15 titanium alloy powder, the baking temperature is 100°C, and the ...

Embodiment 2

[0083] This embodiment provides an additive manufacturing method for preparing cabin parts using TA15 titanium alloy powder. The content [%] of each element component in the titanium alloy powder is shown in the following table:

[0084] C Al Zr Mo V Fe Si O N H Ti ≤0.03 7.2 1.5 1.5 1.3 ≤0.1 ≤0.05 ≤0.08 ≤0.03 ≤0.0125 margin

[0085] The described additive manufacturing method comprises the steps:

[0086] (1) Carry out three-dimensional modeling according to the solid structure of thin-walled parts to obtain a solid model, and add a lattice structure on the outer surface of the solid model to obtain an additive model. The rod diameter of the lattice structure unit cell is 0.4mm, and slice the additive model Layered, the slice thickness is 0.05mm;

[0087] (2) Baking the TA15 titanium alloy powder, the baking temperature is 120°C, and the holding time of the baking powder process is 6h;

[0088] (3) The preheating temperature of the s...

Embodiment 3

[0095] This embodiment provides an additive manufacturing method for preparing thin-walled parts of connecting joints by using TA15 titanium alloy powder. The content [%] of each element component in the titanium alloy powder is shown in the following table:

[0096] C Al Zr Mo V Fe Si O N H Ti ≤0.03 5.8 1.8 0.5 0.8 ≤0.1 ≤0.05 ≤0.08 ≤0.03 ≤0.0125 margin

[0097] The described additive manufacturing method comprises the steps:

[0098] (1) Carry out three-dimensional modeling according to the solid structure of thin-walled parts to obtain a solid model, add ribs on the outer surface of the solid model to obtain an additive model, design a 3mm hole at the connection between the rib and the solid model, and the distance between adjacent holes The hole spacing is 2mm, and the additive model is sliced ​​and layered, and the slice thickness is 0.06mm;

[0099] (2) Baking the TA15 titanium alloy powder, the baking temperature is 125°C, and t...

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Abstract

The invention provides a method for additive manufacturing of titanium alloy thin-walled parts. The additive manufacturing method includes the following steps: (I) performing three-dimensional modeling according to the solid structure of the thin-walled parts to obtain a solid model, The additive model is obtained by adding an auxiliary support structure on the outer surface of the model, and the additive model is sliced ​​and layered; (II) The scanning path is generated according to the additive model manufacturing file, and the laser augmentation of the part entity structure and the auxiliary support structure is performed layer by layer on the substrate. Material manufacturing, stacking layer by layer to form a part entity including an auxiliary structure; (Ⅲ) Perform heat treatment on the part entity including an auxiliary structure together with the substrate. The additive manufacturing method provided by the invention effectively solves the problem of microcracks in titanium alloy thin-walled parts, improves the mechanical properties of thin-walled parts, and ensures that the dimensional accuracy of thin-walled structures is controlled within a reasonable range to the greatest extent, so that the prepared parts meet Aerospace requirements.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to an additive manufacturing method for thin-walled parts, in particular to an additive manufacturing method for titanium alloy thin-walled parts. Background technique [0002] Additive manufacturing technology has appeared since the 1990s, and its development is based on high-energy thermal cladding technology and rapid prototyping technology. Compared with traditional manufacturing technology, it does not need to go through various cutting tools and various complicated processes. The processing time is greatly reduced, and at the same time, for parts with complex structures, the processing process and manufacturing accuracy are higher. [0003] Additive manufacturing technology is mainly to generate a three-dimensional CAD model of the part in the computer, and use laser cladding according to the size data of the model to accumulate the material of the part layer by l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B22F3/24B33Y10/00B33Y40/20
CPCB22F3/24B33Y10/00B33Y40/20B22F2003/248Y02P10/25
Inventor 楚瑞坤
Owner 飞而康快速制造科技有限责任公司
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