Aluminum Profile Bending

Corrosion resistance

The density of aluminum profile is only 2.7g/cm3, about 1 / 3 of that of steel, copper or brass (7.83g/cm3 and 8.93g/cm3 respectively). Aluminum shows excellent corrosion resistance under most environmental conditions, including air, water (or brine), petrochemical and many chemical systems.

conductivity

Aluminum profile is often selected because of its excellent conductivity. On the basis of equal weight, the conductivity of aluminum is nearly 1 / 2 of that of copper.

Thermal conductivity

The thermal conductivity of aluminum alloy is about 50-60% of that of copper, which is beneficial to the manufacture of heat exchangers, evaporators, heating appliances, cooking utensils, as well as automobile cylinder heads and radiators.

Non ferromagnetism

Aluminum profile is non ferromagnetic, which is an important characteristic for electrical industry and electronic industry. Aluminum profiles cannot spontaneously ignite, which is important for applications involving handling or contacting flammable and explosive materials.

Machinability

The machinability of aluminum profile is excellent. In various deformed aluminum alloys and cast aluminum alloys, as well as in various states after the production of these alloys, the machining characteristics change greatly, which requires special machine tools or technologies.

Formability

The variation of allowable deformation is dominated by specific tensile strength, yield strength, ductility and corresponding work hardening rate.

Recyclability

Aluminum has high recyclability, and the characteristics of recycled aluminum are almost the same as that of primary aluminum.

Hard anodizing is the full name of hard anodizing. The thickness of hard anodic oxide film is generally required to be 25-150um. The thickness of most hard anodic oxide films is 50-80um. The thickness of hard anodic oxide film with film thickness less than 25um is used for parts used in tooth keys, spirals and other occasions. The thickness of anodic oxide film for wear resistance or insulation is about 50um. Under some special process conditions, it is required to produce hard anodic oxide film with thickness of more than 125um, However, it must be noted that the thicker the anodic oxide film, the lower the microhardness of the outer layer and the increase of the surface roughness of the film. The bath solution for hard anodizing is generally sulfuric acid solution and sulfuric acid added organic acids, such as oxalic acid, aminosulfonic acid, etc. In addition, the hard anodizing treatment can be realized by reducing the anodizing temperature or reducing the sulfuric acid concentration. For deformed aluminum alloys with copper content greater than 5% or silicon content greater than 8%, or die-casting aluminum alloys with high silicon, some special measures of anodizing may also be considered. For example, for 2XXX series aluminum alloy, 385g / L sulfuric acid and 15g / L oxalic acid can be used as electrolytic cell solution to avoid burning of aluminum alloy during anodizing, and the current density should also be increased to more than 2.5a/dm.