Method of electric arc fuse additive manufacturing of metal lattice structure and product

A technology of additive manufacturing and metal lattice, applied in the direction of manufacturing tools, additive processing, arc welding equipment, etc., can solve the problems of metal powder manufacturing difficulties, difficult application, and unformable components, etc., to improve material requirements and processing quality Insufficient aspects, high precision and quality performance, and the effect of an open molding environment

Active Publication Date: 2019-12-13
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, further studies have shown that the current process for processing lattice structures based on additive manufacturing technology is mainly selective laser melting (Selective Laser Melting, SLM), which has exposed the following deficiencies in practice: 1. , this method adopts the method of spreading powder to carry out regional melting with laser, but materials such as aluminum and copper alloy have low absorption rate of laser light, resulting in unmelted phenomenon and unfused defects in the process of regional melting
At the same time, the surface of powder materials such as aluminum and copper alloys is easily oxidized, which significantly reduces the wettability of the material, causing the surface of the molten metal to

Method used

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  • Method of electric arc fuse additive manufacturing of metal lattice structure and product
  • Method of electric arc fuse additive manufacturing of metal lattice structure and product
  • Method of electric arc fuse additive manufacturing of metal lattice structure and product

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Effect test

Embodiment 1

[0043] like image 3 As shown, the X-direction side length of the overall lattice structure is 30 mm, the Y-axis direction side length is 30 mm, and the Z-axis direction height is 22.8 mm. The distribution mode of the lattice structure is "2×2×3", with 2 lattice structure units distributed on the X-axis and Y-axis respectively, and 3 layers of lattice structure units distributed on the Z-axis; a total of It consists of 12 lattice structure units.

[0044] The lattice structure unit is a pyramid structure, the side length of the X direction is 15mm, the side length of the Y axis direction is 15mm, the height of the Z axis direction is 7.6mm, the diameter of the lattice structure unit rod is 3mm, and the angle between the rod and the horizontal plane is uniform. is 45°. UG software can be used to establish the 3D model of the lattice structure unit, and then the established lattice unit model is superimposed through the array according to the “2×2×3” distribution method to for...

Embodiment 2

[0050] like Figure 4 As shown, the X-direction side length of the overall lattice structure is 36 mm, the Y-axis direction side length is 36 mm, and the Z-axis direction height is 30 mm. The distribution mode of the lattice structure is "2×2×2", with 2 lattice structure units distributed in the X-axis and Y-axis respectively, and 2 layers of lattice structure units distributed in the Z-axis; a total of It consists of 8 lattice structure units.

[0051] The X-direction side length of the lattice structure unit is 18mm, the Y-axis direction side length is 18mm, the Z-axis direction height is 15mm, the diameter of the rod of the lattice structure unit is 2mm, the angle between the central rod and the horizontal plane is 90°, and the quadrilateral rod The angle between the parts and the horizontal plane is 30°. UG software can be used to establish the 3D model of the lattice structure unit, and then the established lattice unit model is superimposed through the array according ...

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Abstract

The invention belongs to the related technical field of lattice structure manufacturing and processing, and discloses a method of electric arc fuse additive manufacturing of a metal lattice structure.On one hand, the pulse waveform of power output is controlled, so that the transition of one pulse and one drop is realized, the size and number of molten drops can be accurately controlled, and thediameter of a unit rod of the lattice structure is controlled; on the other hand, the lifting capacity and offset in a printing path are controlled, so that the angle of the unit rod of the lattice structure can be accurately controlled, and the electric arc fuse additive manufacturing of the lattice structure of any structure is realized. The invention further discloses a corresponding product. According to the method, the defects and deficiencies of various preparation lattice structures in the prior art can be effectively overcome, and additionally, the method has the advantages of high processing quality and low material requirement and is suitable for any complex form and large sizes.

Description

technical field [0001] The invention belongs to the technical field related to the manufacturing and processing of lattice structures, and more specifically relates to a method and product for additively manufacturing metal lattice structures by arc fuses. Background technique [0002] The so-called lattice structure is a space grid-like ordered porous structure composed of nodes and connecting rod units. Because of its light weight, high specific strength, heat insulation, energy absorption and shock absorption, and noise reduction and many other advantages, it is widely used in aerospace and other fields, and can be used, for example, to manufacture skin heat insulation layers for hypersonic vehicles . [0003] The manufacturing methods of lattice structure in the prior art mainly include investment casting, stretched mesh folding method and extrusion wire cutting method, etc., but these methods have extremely high requirements on the materials used to manufacture lattice...

Claims

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Application Information

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IPC IPC(8): B23K9/04B23K9/095B33Y10/00B33Y80/00
CPCB23K9/042B23K9/0953B33Y10/00B33Y80/00
Inventor 余圣甫李勇杰何天英史玉升陈颖
Owner HUAZHONG UNIV OF SCI & TECH
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