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Sandwich structure of corrugated square tube core body and preparation method thereof

A sandwich structure and corrugated technology, applied in the corrugated square tube core sandwich structure and its preparation, in the field of composite materials with multifunctional properties, can solve the problems of low load-bearing performance and energy absorption efficiency, and achieve easy operation and wide application prospects , the effect of broad application prospects

Active Publication Date: 2017-06-13
重庆共邦实业(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the research on the anti-knock performance of the lattice structure, the team of Professor Wadley of the University of Virginia proposed a sandwich structure with horizontally staggered rectangular tubes as the core. This structure has the characteristics of simple preparation process, but due to the Prone to Euler buckling, resulting in lower load-carrying properties and energy-absorbing efficiency

Method used

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  • Sandwich structure of corrugated square tube core body and preparation method thereof
  • Sandwich structure of corrugated square tube core body and preparation method thereof

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preparation example Construction

[0040] The invention also discloses a method for preparing a sandwich structure of a corrugated square tube core body, which includes the following steps:

[0041] S1. Bending the rectangular tube according to the sinusoidal corrugation to make a corrugated square tube;

[0042] The section of the corrugated square tube is a square section or a rectangular section;

[0043] S2, cutting the flattened plate into an upper panel and a lower panel;

[0044] S3. Clean the upper panel, the lower panel and the corrugated square pipe, and put them into a dryer to dry for later use;

[0045] S4. Assembling a plurality of corrugated square tubes in parallel with each other into a corrugated square tube core body, and fixing them for later use;

[0046] The corrugated square tubes are assembled in parallel at 1 to 2 times the tube wall spacing to form a corrugated square tube core; the phase difference between adjacent corrugated square tubes is 0° to 180°;

[0047] S5, connecting the ...

Embodiment 1

[0050] 1) First use a pipe bender to make a 1060 aluminum alloy rectangular pipe into a sinusoidal corrugated square pipe according to the specified requirements;

[0051] 2) Cutting the flattened 1060 aluminum alloy plate into an upper panel and a lower panel by wire cutting technology;

[0052] 3) Clean the upper panel, lower panel and corrugated square pipe to remove oil and rust, and put them in the dryer to dry for later use;

[0053] 4) Assemble the corrugated square tube parallel to each other according to 1 times the tube wall spacing and 90° phase difference to form a corrugated square tube core body, and fix it with tooling for standby;

[0054] 5) Dry the commercially available aluminum brazing paste evenly at the junction of the corrugated square tube core body and the upper and lower panels in an oven at 40-50°C, then put it into a high-temperature brazing furnace for welding, and slowly cool to Take out the oven at room temperature to obtain the corrugated squar...

Embodiment 2

[0057] 1) First use the pipe bender to make the TC4 titanium alloy rectangular pipe into a semicircular corrugated square pipe according to the specified requirements;

[0058]2) The flattened TC4 titanium alloy plate is cut into an upper panel and a lower panel by wire cutting technology;

[0059] 3) Clean the upper panel, lower panel and corrugated square pipe to remove oil and rust, and put them in the dryer to dry for later use;

[0060] 4) Assemble the corrugated square tube parallel to each other according to 2 times the tube wall spacing and 180° phase difference to form a corrugated square tube core body, and fix it with tooling for standby;

[0061] 5) Apply Ag-based brazing paste evenly on the surface of the corrugated square tube core parallel to the upper panel and the lower panel, dry it in an oven at 80°C, then put it into a high-temperature brazing furnace for welding, and cool slowly after welding Take it out of the oven at room temperature to obtain a corruga...

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Abstract

The invention discloses a sandwich structure of a corrugated square tube core body and a preparation method thereof and relates to the technical field of compound structural materials. The sandwich structure of the corrugated square tube core body is composed of an upper panel, the corrugated square tube core body and a lower panel. According to the sandwich structure disclosed by the invention, a straight tube core body is replaced by the corrugated square tube core body. The mechanical characteristics such as specific strength and specific stiffness of the structure are further improved based on the straight tube core body structure and the coefficient of heat conduction of channel flowing based on a transition flow is increased by 50% or more, and meanwhile, as the contact area of the square tube core body and the upper and lower panels can be designed according to the demand of a shear property without processing a special welding platform on core body, the processing technology is simplified. The structure disclosed by the invention has high specific strength, high specific stiffness and excellent heat conduction characteristic, and has a wide application prospect in the fields of space flight and aviation, ships, automobiles, machinery and civil engineering, and in particular in a load-carrying structure with a heat conduction requirement.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of composite materials, and in particular relates to a corrugated square tube core interlayer structure and a preparation method thereof, in particular to a composite material with multifunctional properties. [0003] 【Background technique】 [0004] Ultralight porous metal materials are a new type of multifunctional materials that have emerged with the rapid development of material preparation and machining technology in recent years. This type of material has high porosity, and its corresponding 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 materials (such as corrugated structure, honeycomb structure, etc.) and three-dimensional truss structures (such as pyramid structures, X-shaped structures, etc.). [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B15/20B32B15/18B32B3/20
CPCB32B3/20B32B15/01B32B15/18B32B15/20
Inventor 张钱城赵振宇韩宾卢天健金峰李飞皓赵中南
Owner 重庆共邦实业(集团)有限公司
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