Foamed aluminum, also known as foamed aluminum, is made by adding additives to pure aluminum or aluminum alloy through a foaming process. It has both metal and bubble characteristics. It is a new type of strategic functional structural material with low density and high density. It has the advantages of strong shock absorption, high temperature and weather resistance, filtering ability, easy processing and installation, high forming accuracy, and surface coating.
Aluminum foam performance
Ultralight
The density is 0.2~0.4g/cm3, which is about 1/10 of the density of aluminum, 1/20 of the density of titanium, 1/30 of the density of steel, 1/30 of the density of steel, and 1/3 of the density of wood.
Sound absorption
Foamed aluminum can absorb the energy of sound through the vibration of the pore wall to muffle the sound. Remove noise.
Heat resistance
It has high heat resistance. Generally, the melting temperature of aluminum alloy is about 560·700°C. Single foam aluminum does not dissolve even if heated to 1400°C, and it does not release harmful gases at high temperatures.
Electromagnetic wave shielding
Foamed aluminum has a good shielding of high-frequency electromagnetic waves, which can reduce electromagnetic interference by more than 80%.
Features of aluminum foam
Foamed aluminum has single-sided open cells, double-sided open cells, closed cells, and more large, medium, small, and natural casting surfaces, so the selection range is wider and the application is more extensive.
So let's focus on now:
What are the characteristics of aluminum foams with different pore sizes?
The standard size of the foam aluminum board is 1220mm x 2440mm, other sizes can also be customized.
It is understood that the performance of foamed aluminum mainly depends on the characteristics of the pores distributed in the three-dimensional framework, that is, the shape and distribution of pores, including the type of pores (through or closed), the shape of the pores, the distribution of pores, and the structure of pores ( Pore size, porosity, specific gravity, etc.).
For example: Generally, the higher the porosity, the smaller the pore size, the more conducive to sound absorption; when the relative density is the same, the tensile strength of the smaller pore size is higher than that of the larger pore size; when the density increases, the compressive strength increases.
Therefore, it is also more important to choose a foamed aluminum with a suitable pore size according to different space requirements.
It has to be said that foamed aluminum used in construction is indeed a very unique and charming material!
Not only that, aluminum foam has many applications in the military industry, construction industry, aerospace industry, machinery manufacturing industry, automobile manufacturing industry, etc.