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Hollowed-out lattice sandwich layer with gradient functionality and manufacturing method of hollowed-out lattice sandwich layer

A functional and dot-matrix technology, applied in additive manufacturing, improving energy efficiency, improving process efficiency, etc., can solve problems such as lack of overall strength and functionality, inability to realize gradient functionality, and high quality of hollowed-out dot-matrix interlayers. To achieve the effect of avoiding strength, reducing risk, avoiding complex multi-process flow, and avoiding performance mismatch

Active Publication Date: 2017-05-24
XIAN BRIGHT ADDTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hollow lattice interlayer with gradient functionality, which solves the problem that the hollow lattice interlayer has a large quality, lacks overall strength and functionality, and cannot realize gradient functionality.

Method used

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  • Hollowed-out lattice sandwich layer with gradient functionality and manufacturing method of hollowed-out lattice sandwich layer
  • Hollowed-out lattice sandwich layer with gradient functionality and manufacturing method of hollowed-out lattice sandwich layer
  • Hollowed-out lattice sandwich layer with gradient functionality and manufacturing method of hollowed-out lattice sandwich layer

Examples

Experimental program
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Effect test

preparation example Construction

[0035] A method for preparing a hollow lattice interlayer with gradient functionality, characterized in that it comprises the following steps:

[0036] Step 1, convert the drawn 3D data model of the hollow lattice sandwich structure into STL format data and export it;

[0037] Step 2, import the STL format data obtained in step 1 into the commercial model segmentation software, and determine the placement position of the parts during the laser selective melting process, use the commercial model segmentation software to divide the model into slices and import the data into commercial 3D printing equipment;

[0038] Step 3, formulate the forming process of the laser selective melting process, set the laser selective melting parameters, and obtain a hollow lattice interlayer structure with gradient functionality for one overall forming, where the specific laser selective melting parameters are: laser power 300-400KW, The scanning speed is 500-1500mm / s, the overlap rate is 30-60%...

Embodiment 1

[0040] Forming preparation of titanium alloy hollow lattice interlayer with gradient functionality

[0041] (1) Design and draw the 3D model of titanium alloy hollow lattice interlayer

[0042] like Figure 2-3 As shown, a rhombus-shaped hollow cell structure is designed, and the side length of the outer contour body of the cube is 5mm; 12 nodes 5 are determined on the outer contour body 4, and the specific distribution is: one node is determined on each side length of the outer contour body 4 Nodes, a total of 12 nodes 5; 9 nodes 5 are determined inside the outer contour body 4, and the overall hollow lattice filling unit 3 has a total of 21 nodes 5, and all nodes 5 are determined to follow the law, the rule is that each node When the point 5 is connected according to the law: the angle between the round rod 6 and the surface of the outer contour body 4 is 35°.

[0043] Draw the designed hollow lattice sandwich structure, and design the dimensions of the cladding plate 1 an...

Embodiment 2

[0048] Forming preparation of aluminum alloy hollow lattice interlayer with gradient functionality

[0049] (1) Design and draw the 3D model of aluminum alloy hollow lattice interlayer

[0050] like Figure 5-6 As shown, a cubic branch-shaped hollow cell structure is designed, and the side length of the outer outline of the cube is 3mm; 20 nodes 5 are determined on the outer outline 4, and the specific distribution is: each vertex of the outer outline 4 determines one There are 8 nodes 5 in total, 1 node is determined on each side length, 12 nodes in total; 9 nodes 5 are determined inside the outer contour body 4, and the overall hollow lattice filling unit 3 has a total of 29 nodes 5, all The node 5 is determined to follow the law, and the rule is that when the nodes 5 are connected according to the law: the angle between the round rod 6 and the surface of the outer contour body 4 is 40°.

[0051] Draw the designed hollow lattice sandwich structure, and design the dimension...

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Abstract

The invention discloses a hollowed-out lattice sandwich layer with gradient functionality. The hollowed-out lattice sandwich layer with gradient functionality comprises two cladding plates, wherein a core sandwich layer is arranged between the cladding plates and comprises a plurality of hollowed-out lattice filling units which are connected with one another; and each hollowed-out lattice filling unit consists of a plurality of tiny dense hollowed-out base cells. The hollowed-out sandwich layer is formed by the hollowed-out lattice filling units, and is light in structure weight and high in specific strength, the maximum weight reduction benefit can reach 85% or above, and meanwhile, the hollowed-out lattice sandwich layer has functional benefits such as heat insulation and sound insulation; comprehensive benefits of structure light weight and functionalization are improved, property mismatching of a sandwich board with the single structure in the application field under various working conditions is avoided, and finally, the gradient function is fulfilled; and meanwhile, a selective laser melting technology is adopted, the risk of reduction of strength of a connecting region between a traditional sandwich layer and an outer cladding plate and complicated multi-process flow can be avoided, and therefore, the use value is quite high.

Description

technical field [0001] The invention belongs to the technical field of hollow structure preparation, and in particular relates to a hollow lattice interlayer with gradient functionality, and also relates to a method for manufacturing the hollow lattice interlayer with gradient functionality. Background technique [0002] As a special form of material structure, the hollow structure has a lighter weight than traditional solid materials. At the same time, due to the difference in the hollow structure and arrangement, it will also have different degrees of specific strength benefits (strength / weight ratio) . At present, the hollow structure is mainly used in aerospace and medical fields, such as skin structure, non-main load-bearing frame, human medical implant, etc. Due to the limitations of traditional processing technology, the form of hollow lattice structure is generally relatively simple. , mainly in the shape of a cross and a pyramid, and the overall strength and functi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11B22F7/04B33Y10/00B33Y80/00
CPCB22F3/1115B22F7/004B33Y10/00B33Y80/00B22F10/38B22F10/32B22F10/68B22F10/36B22F10/28B22F10/73B22F5/00B22F2998/10B22F2999/00Y02P10/25B22F2207/13
Inventor 赵晓明王佳骏李晓敏
Owner XIAN BRIGHT ADDTIVE TECH CO LTD
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