Industrial Aluminium Profile Main process:
1, casting is the first aluminum production process
(1) Ingredients: According to the need to produce the specific alloy grades, calculate the amount of various alloy composition, with a reasonable variety of raw materials.
(2) smelting: with a good raw materials according to the process requirements to join the melting furnace melting, and by degassing, slag refining means of the melt within the slag, the gas effectively removed.
(3) casting: smelting aluminum liquid in a certain casting process conditions, through the deep well casting system, cooling cast into a variety of round cast rods.
2, extrusion: extrusion is the means of forming profiles. First, according to profile products cross-section design, manufacture of mold, the use of industrial aluminum extrusion machine will be a good round casting rod from the mold extrusion. Commonly used grade 6063 alloy, in the extrusion with a cold air quenching process and after the artificial aging process to complete the heat treatment to strengthen. Different grades of heat treatment to strengthen the alloy, the heat treatment system is different.
3, color (here the first major oxidation process)
Oxidation: extruded aluminum alloy profiles, the surface corrosion resistance is not strong, must be subjected to anodic oxidation surface treatment to increase the corrosion resistance of aluminum, wear and appearance of the aesthetic degree.
The main process is:
(1) surface pretreatment: chemical or physical method to clean the surface of the profile, exposed pure matrix, in order to facilitate access to complete, dense artificial oxide film. It is also possible to obtain a mirror or matte (matt) surface by mechanical means.
(2) anodizing: the surface pretreatment of the profile, under certain conditions, the substrate surface anodic oxidation, resulting in a layer of dense, porous, strong adsorption capacity of the AL203 film.
(3) Sealing: The so-called sealing is the anodic oxidation of porous oxide film formed after the membrane pore pores closed, so that the oxide film pollution, corrosion and wear resistance enhanced. The oxide film is colorless and transparent, the use of sealing before the strong adsorption of the film, in the membrane hole adsorption deposition of some metal salts, the appearance of the appearance of the appearance (silver) outside the many colors, such as: black, bronze, Gold and stainless steel color.
First, the industrial aluminum in the extrusion process, such as extrusion die is not very good or die extrusion industrial aluminum too much, industrial aluminum surface appearance will be squeezed marks, hand may touch the appearance of industrial aluminum uneven, in order to So that the appearance of industrial aluminum smooth and smooth, not touching indentation marks, industrial aluminum plant in general first with alkaline water erosion, erosion out squeeze marks.
Second, the industrial aluminum as a member of the outer envelope requirements of good sealing, the current powder electrostatic spraying has become the domestic industrial aluminum exterior coating in the popular. In particular, the glass industry, the opening of its aluminum sector area should not be greater than the curtain wall area of 15%: and the opening of the department should be used on the suspension structure, opening angle should not be greater than 45 degrees.
Third, the industrial aluminum powder coating with thermal transfer technology will make it more fashionable, so that the powder coating of the profile device has a greater room for development.
Fourth, the aluminum alloy with high strength, light weight, not strong, strong resistance to erosion, good plasticity, deformation is small, non-polluting, non-toxic, fire strong, long life (up to 50-100 years) Good recovery, can be re-furnace re-refining. China's industrial aluminum industry is known as the sun industry, after nearly 50 years of development, production is already the highest in the world. Sandblasting technology is a common method of industrial aluminum surface disposal in recent years, with a special sand high-speed jet grinding off the appearance of industrial aluminum extrusion marks.
