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Square honeycomb interlayer structure and preparation method thereof

A technology of honeycomb interlayer and honeycomb structure, which is applied in the direction of slender elements, building elements, etc., to overcome the corrosion problem of internal structures, facilitate mass production, and achieve the effect of mature technology

Inactive Publication Date: 2017-09-26
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose a square honeycomb sandwich structure with square holes on one side panel in view of the above-mentioned deficiencies in the prior art. The welding process is mature during the preparation, which overcomes the problem of internal structure corrosion in complex environments

Method used

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  • Square honeycomb interlayer structure and preparation method thereof
  • Square honeycomb interlayer structure and preparation method thereof
  • Square honeycomb interlayer structure and preparation method thereof

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preparation example Construction

[0036] The invention also discloses a preparation method of a square honeycomb sandwich structure with square holes on one side panel, comprising the following steps:

[0037] S1. First, use a shearing machine to cut the flat metal plate with a thickness of 0.5mm to 5mm into several rectangular metal strips, and then use wire electric discharge cutting to open several slots in the width direction of the rectangular metal strips;

[0038] The depth of the slot is half of the width of the rectangular metal lath, and the width of the slot is 0.05-0.2mm greater than the thickness of the metal lath;

[0039] S2. Assembling the metal strips prepared in step S1 into a square honeycomb structure to form a square honeycomb core, and welding the joints of the square honeycomb core;

[0040] S3. Cut the flattened metal plate with a thickness of 0.5-10mm into several rectangular metal plates with a shearing machine, prepare the front side panel and the rear side panel, and determine the r...

Embodiment 1

[0045] 1) First, use a shearing machine to cut the flattened 0.5mm stainless steel plate into a number of rectangular metal strips of appropriate size, and then use wire EDM to open a number of slots in the width direction of the rectangular metal strips. The depth of the slots is Half of the width of the rectangular metal lath, the width of the slot is 0.05-0.2mm greater than the thickness of the metal lath, and the margin is for the convenience of assembly without affecting the accuracy and stability of the structural configuration;

[0046] 2) Next, add a metal cleaning agent to the ultrasonic cleaning machine to clean the cut metal slats to remove the grease and rust on the surface, and then dry them in an oven at 40-50°C. The metal slats with slots are assembled into a square honeycomb structure core, and NiCr is evenly applied to the joints 25 P 10The brazing paste is dried in an oven at 40-50°C, and then the above structure is put into a high-temperature brazing furnac...

Embodiment 2

[0052] 1) First, use a shearing machine to cut the flat 1mm aluminum alloy plate into several rectangular metal strips of appropriate size, and then use wire EDM to open a number of slots in the width direction of the rectangular metal strips. The depth of the slots is Half of the width of the rectangular metal lath, the width of the slot is 0.05-0.2mm greater than the thickness of the metal lath, and the margin is for the convenience of assembly without affecting the accuracy and stability of the structural configuration;

[0053] 2) Next, add a metal cleaning agent to the ultrasonic cleaning machine to clean the cut metal slats to remove the grease and rust on the surface, and then dry them in an oven at 40-50°C. The metal laths with slots are assembled into a square honeycomb core body, and the commercially available aluminum brazing paste is evenly applied to the joints, dried in an oven at 40-50°C, and then the above structure is put into a high-temperature brazing furnace...

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Abstract

The invention discloses a square honeycomb interlayer structure and a preparation method thereof. A square honeycomb core body is prepared through an interlocking technology, through the cell-element position of the core body, the position of an opening in a unilateral panel is determined, and the opened square hole coincides with the geometric center of a square honeycomb unit cell. The square honeycomb interlayer structure is formed by welding the core body, a front side panel and a rear side panel through brazing or argon arc welding. Compared with a traditional square honeycomb interlayer structure, the improved square honeycomb interlayer structure is easier to prepare and more convenient to maintain and meanwhile facilitates mass production under the condition that it is ensured that the bearing property and shock-resistant property are equal and has wide application prospects in the fields such as transportation, safety protection and military science.

Description

technical field [0001] The invention belongs to the field of sandwich structure design and preparation, and in particular relates to a square honeycomb sandwich structure and a preparation method thereof. Background technique [0002] As a two-dimensional periodic porous structure, the honeycomb lattice structure has been studied at home and abroad. Among them, the square honeycomb lattice structure has relatively ideal compression and shear properties, and has obvious load-bearing advantages compared with lattice structures such as corrugated and three-dimensional rods; at the same time, the square honeycomb sandwich structure also shows significant performance under the impact load of explosions Advantage. Although the square honeycomb sandwich structure has the best load-carrying capacity among the existing porous materials / structure systems, the closedness of its cell structure restricts its multifunctional application. At the same time, in the processing and preparati...

Claims

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Application Information

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IPC IPC(8): B23P15/00F16S3/08
CPCF16S3/08B23P15/00
Inventor 苏鹏博韩宾张钱城赵振宇卢天健金峰
Owner XI AN JIAOTONG UNIV
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