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Preparation method of high-melting-point Kelvin structure lattice metal based on laser additive manufacturing

A high melting point metal, laser additive technology, applied in the direction of additive processing, etc., can solve the problems of complex investment casting process, thick hole and edge diameter, etc., and achieve the effect of overcoming the defects of anisotropic mechanical properties

Active Publication Date: 2020-12-01
SHENYANG RES INST OF FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for manufacturing lattice metal with a high melting point Kelvin structure based on selective laser melting. One of the purposes of the present invention is to prepare lattice metal by selective laser melting to overcome melting The disadvantages of the mold casting method are the complicated process and the thicker diameter of the pore-strut

Method used

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  • Preparation method of high-melting-point Kelvin structure lattice metal based on laser additive manufacturing
  • Preparation method of high-melting-point Kelvin structure lattice metal based on laser additive manufacturing
  • Preparation method of high-melting-point Kelvin structure lattice metal based on laser additive manufacturing

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Embodiment 1

[0031] This embodiment is to design and prepare a high melting point Kelvin structure lattice metal with a porosity of 43% and 316L stainless steel as a matrix;

[0032] Such as figure 1 As shown, it is the design model of the Kelvin structure lattice metal unit. The Kelvin structure lattice metal unit adopts the three-dimensional design software to carry out the adaptive design of the selective laser melting process. The prism diameter is 0.3mm, the prism length is 0.33mm, and the prism length is 0.3mm. Diameter ratio is 1.1, Kelvin structure lattice metal 3D design model, such as figure 2 As shown, the outer contour size of the high melting point Kelvin structure lattice metal design model is 6.5×3.7×3.7 mm, and the porosity is 43%.

[0033] The Kelvin structure lattice metal with 316L stainless steel as the matrix is ​​prepared by selective laser melting process, including the following steps:

[0034] Step 1. Based on the process characteristics of selective laser melti...

Embodiment 2

[0042] This embodiment is to design and prepare a high melting point Kelvin structure lattice metal with a porosity of 71% based on 316L stainless steel;

[0043] Such as figure 1 As shown, it is the design model of the Kelvin structure lattice metal unit. The Kelvin structure lattice metal unit adopts the three-dimensional design software to carry out the adaptive design of the selective laser melting process. The diameter of the prism is 0.8mm, the length of the prism is 1.2mm, and the length of the prism is Diameter ratio is 1.5, Kelvin structure lattice metal 3D design model, such as figure 2 As shown, the outer contour size of the high melting point Kelvin structure lattice metal design model is 23.8×13.6×13.6 mm, and the porosity is 71%.

[0044] The Kelvin structure lattice metal with 316L stainless steel as the matrix is ​​prepared by selective laser melting process, including the following steps:

[0045] Step 1. Based on the process characteristics of selective la...

Embodiment 3

[0052] This embodiment is to design and prepare a high melting point Kelvin structure lattice metal based on the GH4169 superalloy with a porosity of 82%;

[0053] Such as figure 1 As shown, it is the design model of the Kelvin structure lattice metal unit. The Kelvin structure lattice metal unit adopts three-dimensional design software to carry out the adaptive design of the selective laser melting process. The diameter of the prism is 1.2mm, the length of the prism is 2.4mm, and the length of the prism is Diameter ratio is 2.0, Kelvin structure lattice metal 3D design model, such as figure 2 As shown, the outer contour size of the high melting point Kelvin structure lattice metal design model is 47.5×27.1×27.1 mm, and the porosity is 82%.

[0054] Preparation of GH4169 superalloy as matrix Kelvin structure lattice metal by selective laser melting process, including the following steps:

[0055] Step 1. Based on the process characteristics of selective laser melting, the t...

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Abstract

The invention provides a preparation method of high-melting-point Kelvin structure lattice metal based on laser additive manufacturing, and belongs to the technical field of additive manufacturing oflattice metal. Based on a selective laser melting technology, the preparation method comprises the steps that hole pattern structure process adaptability design is carried out on the Kelvin structurelattice metal to establish a three-dimensional model of the Kelvin structure lattice metal; and slicing discretization treatment is carried out and layer-by-layer selective laser printing is carried out to obtain the Kelvin structure lattice metal. The Kelvin structure lattice metal is of a three-dimensional structure formed by expanding basic units, prisms of the Kelvin structure lattice metal units are entities, the other parts except the prisms are virtual bodies, and every two adjacent Kelvin structure lattice metal units share one prism. Through geometric parameter design, geometric parameter boundary setting and precise regulation and control of process parameters of selective laser melting of the Kelvin structure lattice metal, the high-melting-point Kelvin structure lattice metal with a fine structure is prepared.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing of lattice metals, and in particular relates to an area-selected laser additive manufacturing method of lightweight, high-temperature-resistant Kelvin structure lattice metals. Background technique [0002] As a kind of porous material, lattice metal is named for its periodic and ordered structure. Lattice metal has the structural characteristics of light weight, high specific strength and high specific stiffness, as well as functional properties such as vibration and noise reduction, buffering and energy absorption. It has attracted extensive attention from the international academic community and is considered to be the most promising new generation of lightweight materials. One, it is widely used in aerospace, shipbuilding and other fields, and has broad application prospects. [0003] The methods for preparing lattice metal in the prior art mainly include investment casting met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11B22F3/24B22F5/10B33Y10/00B33Y50/02B33Y80/00
CPCB22F3/11B22F3/24B22F5/10B33Y10/00B33Y50/02B33Y80/00B22F2003/248Y02P10/25B22F3/1115B22F10/28B22F10/36B22F10/366B22F10/64B33Y40/20
Inventor 于波魏彦鹏高鹏时坚成京昌刘世昌王景成苗治全
Owner SHENYANG RES INST OF FOUNDRY
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