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Core sandwich structure of corrugated channel and preparation method thereof

A sandwich structure and corrugation technology, applied in the field of composite structural materials, can solve the problems of free flow obstruction of core fluid, inability to achieve active heat dissipation, buckling failure of core structure, etc., and achieve excellent thermal conductivity, high specific stiffness, and improved specific strength. and the effect of specific stiffness

Active Publication Date: 2017-06-27
湖南金康管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of equipment integration and multifunctional design, materials with multifunctional properties are more and more favored by the engineering community. Traditional two-dimensional lattice materials have excellent mechanical properties, such as honeycomb structure cores, whose compression, bending, etc. The mechanical properties are outstanding, but because the core is composed of intersecting webs, the free flow of fluid inside the core is hindered, and the active heat dissipation function cannot be realized
In addition, if laser welding is used for large-scale honeycomb sandwich structures, cross welds will be formed on the panel, which reduces the mechanical properties of the panel
Although the traditional I-shaped core has open channels, its core structure is prone to buckling failure, so its structure needs to be improved

Method used

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  • Core sandwich structure of corrugated channel and preparation method thereof
  • Core sandwich structure of corrugated channel and preparation method thereof
  • Core sandwich structure of corrugated channel and preparation method thereof

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preparation example Construction

[0044] A method for preparing a corrugated channel core sandwich structure of the present invention comprises the following steps:

[0045] S1. Using stamping or rolling technology to make the flat sheet into a corrugated sheet;

[0046] S2, cutting the corrugated board into corrugated strips;

[0047] S3, cutting the flattened plate into an upper panel and a lower panel;

[0048] S4, after removing the oil and rust on the upper panel, the lower panel and the corrugated lath described in steps S2 and S3, put it into the drying machine to dry for subsequent use;

[0049] S5. Assemble the corrugated slats parallel to each other to form a corrugated channel core, and fix them for later use;

[0050] The phase difference of the corrugated slats 0° to 180°, and the equivalent neutral plane spacing of the corrugated slats is 10 to 100 times the thickness of the corrugated slats.

[0051] S6. Connect the corrugated channel core body described in step S5 with the upper panel and ...

Embodiment 1

[0054] 1) First, the flattened titanium alloy plate is made into a sinusoidal corrugated plate by stamping technology;

[0055] 2) Then the corrugated board is cut into corrugated strips 2 as required by wire cutting technology;

[0056] 3) cutting the flattened titanium alloy plate into upper panel 1 and lower panel 4 of equal thickness by wire cutting technology;

[0057] 4) Clean the upper panel 1, the lower panel 4 and the corrugated slats 2 in an ultrasonic cleaning machine, and dry them in an oven at 40-50°C for later use;

[0058] 5) Assemble the corrugated slats 2 in parallel with each other according to the spacing of 10 times the thickness of the web plate and the phase difference of 90° to form the corrugated channel core 3, and fix it with tooling for standby;

[0059] 6) Evenly apply commercially available Ti-based brazing paste to the connecting position between the corrugated channel core 3 and the upper and lower panels 4, dry it in an oven at 80°C, then put it ...

Embodiment 2

[0062] 1) First, the flattened 1060 pure aluminum plate is made into a triangular corrugated plate by rolling technology;

[0063] 2) Then the corrugated board is cut into corrugated strips 2 as required by wire cutting technology;

[0064] 3) Cutting the flattened 1060 pure aluminum plate into upper panel 1 and lower panel 4 of equal thickness by wire cutting technology;

[0065] 4) Clean the upper panel 1, the lower panel 4 and the corrugated slats 2 with a metal cleaning agent to remove oil and rust, and put them in an oven at 40-50°C to dry for later use;

[0066] 5) Assemble the corrugated slats 2 in parallel with each other at a spacing of 20 times the thickness of the web plate and a phase difference of 180° to form a corrugated channel core 3, and fix it with tooling for standby;

[0067] 6) Evenly coat commercially available aluminum brazing paste on the connection position between the corrugated channel core 3 and the upper and lower panels 4, dry it in an oven at 4...

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Abstract

The invention discloses a core sandwich structure of a corrugated channel and a preparation method thereof. The core sandwich structure of the corrugated channel is composed of an upper panel, a corrugated channel core and a lower panel. A two-dimensional lattice core sandwich structure which has the multifunctional characteristic is obtained by using the corrugated channel core to replace an I-type core. Compared with the I-type structure, the properties, such as specific strength and specific rigidity, of the structure are improved by 20% above, and the flowing coefficient of heat conduction of the structure in a channel which is mainly based on a transition flow is increased by 50% above, and the structure has a mechanical property similar to that of a honeycomb sandwich structure and has an excellent active cooling function. The structure disclosed by the invention has the characteristics of high specific strength, high specific rigidity and excellent heat conduction, and can be applied to the field of space flight and aviation, ships, automobiles, machinery and civil engineering, and in particular has a wide application prospect in a load-carrying construction with thermal management requirements.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of composite structural materials, in particular to a corrugated channel core interlayer structure and a preparation method thereof, in particular to a two-dimensional lattice core interlayer structure material with multifunctional properties. [0003] 【Background technique】 [0004] Ultralight porous metal materials are a class of novel multifunctional materials that have emerged with the rapid development of material preparation and machining technology in recent years. This type of material has the characteristics of high porosity, and its microstructure can be divided into two categories: disordered and ordered according to the degree of regularity. The former includes closed-cell foam materials and open-cell foam materials, while the latter includes two-dimensional lattice structures (such as corrugated structure, honeycomb structure, etc.) and three-dimensional truss structures (such as pyramid...

Claims

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Application Information

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IPC IPC(8): B32B37/02B32B3/28B32B15/18B32B15/20B32B15/01B32B15/04
CPCB32B3/28B32B15/01B32B15/043B32B15/18B32B15/20B32B37/02
Inventor 赵振宇张钱城韩宾卢天健金峰李朗王昕
Owner 湖南金康管业有限公司
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