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3D printing preparation method for high-strength titanium alloy part of porous structure

A porous structure, 3D printing technology, applied in the field of lightweight porous titanium alloy parts and high strength, to achieve the effect of excellent comprehensive mechanical properties, uniform pores, and avoiding the use of molds

Inactive Publication Date: 2019-10-25
UNIV OF SCI & TECH BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of existing porous titanium, the purpose of this invention is to propose a high-porosity and high-strength porous titanium alloy part structure, and design a 3D printing preparation method for high-strength porous titanium alloy

Method used

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  • 3D printing preparation method for high-strength titanium alloy part of porous structure
  • 3D printing preparation method for high-strength titanium alloy part of porous structure
  • 3D printing preparation method for high-strength titanium alloy part of porous structure

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Embodiment 1

[0017] A 3D printing preparation method for a high-strength porous structure titanium alloy part, the pore structure unit of the porous structure titanium alloy part is as follows figure 1 As shown, the present embodiment is a high-strength porous TC4 titanium alloy material, and the pore structure is composed of basic units in a rhombic dodecahedron structure; each basic unit is composed of 24 cubic titanium alloy columns with the same length. The acute angle between the titanium columns is 70.5 degrees, and the obtuse angle is 109.5 degrees; the length of the titanium columns is 2 mm, and the width and thickness are the same as 0.3 mm. The laser power is 250W, the powder preheating temperature range is 600°C; the scanning speed is 500mm / s; the scanning interval is 50μm; the thickness of a single powder layer is 30μm.

Embodiment 2

[0019] A 3D printing preparation method for a high-strength porous structure titanium alloy part, the pore structure unit of the porous structure titanium alloy part is as follows figure 2 As shown, the present embodiment is a high-strength porous TC4 titanium alloy material, and the pore structure is composed of basic units in a rhombic dodecahedron structure; each basic unit is composed of 24 cubic titanium alloy columns with the same length and 4 The body-diagonal reinforced brackets with different orientations are connected. The acute angle between the titanium columns is 70.5 degrees, and the obtuse angle is 109.5 degrees; the length of the titanium columns is 2 mm, and the width and thickness are the same as 0.3 mm. The reinforcement bracket is a hexagonal titanium alloy column, three of which intersect with the corresponding vertices of the rhombohedral dodecahedral honeycomb section, and the vertices are taken from two different sections; the other intersects with two ...

Embodiment 3

[0021] A 3D printing preparation method for a high-strength porous structure titanium alloy part. This embodiment is high-strength porous pure titanium. The pore structure of the porous structure titanium alloy part is composed of a combination of basic units in a rhombic dodecahedron structure; each basic unit They are all composed of 24 cubic titanium columns with the same length and 4 solid diagonal reinforcement brackets with different orientations. The acute angle between the dodecahedral prisms is 70.5 degrees, and the obtuse angle is 109.5 degrees; the length of the titanium columns is 1mm. The width and thickness are the same as 0.1mm. The reinforcement bracket is also a cubic titanium column, three of which intersect with the corresponding vertices of the rhombohedral dodecahedral honeycomb section, and the vertices are taken from two different sections; the other intersects with two vertices in the vertical direction of the honeycomb section. The laser power is 250W,...

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Abstract

The invention discloses a 3D printing preparation method for a high-strength titanium alloy part of a porous structure, and belongs to the field of 3D printing material design and preparation. The method is characterized in that the titanium alloy part of the porous structure is formed by superposing a plurality of rhombic dodecahedron basic units, the interiors of the basic units are hollowed out, four reinforcing supports are arranged in the body diagonal direction, each metal frame is formed by adopting a laser 3D printing technology, and every two adjacent basic units share one surface. The method has the advantages that the pore size of the porous material obtained through the method is small, and the porosity can be controlled by regulating and controlling the dimension parameters ofthe basic units; and the yield strength and the torsional strength of a product are higher than those of a conventional 3D printing porous material under the condition of the same porosity.

Description

technical field [0001] The invention belongs to the field of design and preparation of 3D printing materials, and in particular relates to a high-strength, light-weight porous titanium alloy part. Background technique [0002] Porous titanium alloy is a new type of structural material in the field of materials science. The porous structure can effectively exert its mechanical properties and structural characteristics at a lighter weight. Compared with solid materials, this special lightweight material has excellent strength, stiffness and good compressibility. Thanks to a large number of internal pores, porous titanium alloys exhibit many characteristics, such as large specific surface area, strong permeability, excellent mechanical properties, and good processability, so that their applications have been extended to chemical, electronic, medical materials, and bioengineering fields. . Porous titanium has good corrosion resistance, biocompatibility, and mechanical properti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F3/11B33Y10/00B33Y80/00
CPCB22F3/11B33Y10/00B33Y80/00B22F10/00B22F10/362B22F10/38B22F10/28B22F10/36B22F10/366Y02P10/25
Inventor 罗乙娲焦树强朱骏王明涌
Owner UNIV OF SCI & TECH BEIJING
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