Extrusion is a means of forming a profile. First, according to the Profile product section design, manufacture the mold, using the extrusion machine will be heated round cast rod from the mold extrusion forming. The commonly used grade 6063 alloy, in the extrusion, also uses a air-cooled quenching process and subsequent artificial aging process to complete the heat treatment enhancement. Different grades of heat treatment hardening alloy, its heat treatment system is different.
To paint (the process of oxidation in the first place)
Oxidation: Extruded aluminum alloy profile, its surface corrosion resistance is not strong, must be treated by anodic oxidation surface treatment to increase aluminum corrosion resistance, wear resistance and appearance of the aesthetic.
The main process is:
(1) Surface pretreatment: Using chemical or physical methods to clean the surface of the profile, exposing the pure matrix, in order to obtain a complete, dense artificial oxide film. A mirror or matte surface can also be obtained by mechanical means.
(2) Anodic oxidation: The surface pretreatment of the profile, in a certain process conditions, the substrate surface anodic oxidation, a layer of dense, porous, strong adsorption of $literal film layer.
(3) Sealing: the pores of porous oxide films produced by anodic oxidation are closed, which makes the oxidation film anti-pollution, corrosion resistant and wear resistance enhanced. The oxide film is colorless and transparent, using the strong adsorption of the membrane before sealing, and depositing some metal salts in the film hole, which can make the appearance of the profile (silvery white) color, such as black, bronze, gold and stainless steel.