Performance comparison between hexagonal aluminum honeycomb and round tube aluminum honeycomb

In the field of aluminum honeycomb core, due to the production process and other reasons, the aluminum honeycomb used by people for a long time is often not a true hexagonal structure. It is more common to use many small round aluminum tubes to bond together, similar to the honeycomb. Aluminum honeycomb". (See below)

Schematic diagram of circular tube honeycomb structure

Now, with the improvement of the level of production technology, people have begun to gradually use the real hexagonal structure of aluminum honeycomb. (See below)

Compared with the round tube honeycomb, the hexagonal honeycomb has many advantages, mainly including:

1. Higher strength: The honeycomb structure has become the most effective and reasonable structure in nature because of its regular hexagonal geometry. This shape disperses the external force well and supports each other, making it a perfect mechanical structure. The tubular honeycomb structure does not have this advantage. On the one hand, its round shape cannot transmit the external force well, and the force is difficult to be dispersed; on the other hand, the bonding area of many small round tubes is very small. , It is almost concentrated at the position of the tangent point between the circle and the circle. Compared with the bonding area of the entire side of the hexagon, the strength is much smaller. Round-tube honeycombs are easy to break apart by hand, while hexagonal honeycombs are difficult to separate them.
2. Lighter weight: Due to structural weaknesses of the round tube honeycomb, in order to ensure sufficient supporting force, the method of increasing the wall thickness of the round tube is often adopted. The hexagonal honeycomb does not need to be like this. Its excellent mechanical structure also saves a lot of raw materials. Under the premise of ensuring the strength, it can use thinner materials to make the weight lighter. This also means: six The edge honeycomb saves the cost of raw materials more.
3. Better heat insulation and sound insulation: As the density of the hexagonal honeycomb is smaller, the honeycomb wall that transfers heat and sound waves is thinner, so its heat insulation and sound insulation performance are better than the round tube honeycomb.
4. Smaller cross-sectional area: Under the premise of the same aperture, the cross-sectional area of the hexagonal honeycomb is often less than 1/2 of the circular tube honeycomb. Shaped honeycombs can pass more air more effectively, improve flow sharing efficiency, and save energy consumption.
5. Larger specific surface area: When the specific gravity is the same, the hexagonal honeycomb has a larger surface area. When the honeycomb is used as a catalyst or filter material, the efficiency of the hexagonal honeycomb is higher.
6. More beautiful and regular: With the development of production technology, the hexagonal honeycomb arrangement can be very neat and the appearance is more beautiful, while the round tube honeycomb is difficult to arrange very neatly, and the appearance is relatively unregular.