Three Major Steps

Aluminum profile production primarily involves three steps: casting, extrusion, and coloring. Casting is the first step in aluminum profile production, where the raw material is melted at high temperatures and then cast into finished products. Extrusion is the method used to shape aluminum profiles. First, molds are manufactured based on the design of the aluminum profile product's cross-section, and then heated round billets are extruded into shape using industrial aluminum profile extrusion presses. The commonly used 6063 alloy aluminum profiles undergo a wind-cooled quenching and artificial aging process during extrusion, followed by heat treatment for strengthening. Coloring is a surface treatment method for aluminum profiles, with different specific techniques depending on the coloring requirements of various aluminum profile products.

Aluminum Profiles

Two, six main processes

The six main processes in aluminum profile production include the melting and casting stage, as well as the coloring process.

The primary processes in the coloring steps are surface pretreatment of aluminum profiles, anodizing, and sealing. The extruded aluminum profiles have weak corrosion resistance on their surface and require surface treatment through anodizing to enhance their corrosion and wear resistance, as well as aesthetic appeal. Surface pretreatment involves cleaning the aluminum profiles chemically or physically to expose a pure substrate, which is conducive to forming a complete and dense artificial oxide film. Anodizing involves the formation of a dense, porous, and highly adsorbent Al203 film layer on the substrate surface under specific conditions. Sealing primarily closes the pores of the porous oxide film formed after anodizing, enhancing the film's resistance to pollution, corrosion, and wear. A technique involves adsorbing and accumulating some metal salts within the membrane pores, which can make the aluminum profiles display colors beyond their natural silver hue, such as black, antique bronze, gold, and stainless steel, among others.

The casting process consists of three main stages: blending, melting, and forging. Blending involves calculating the proportions of various alloy components based on the requirements of aluminum profiles and market standards, and appropriately allocating the amount of raw materials. Melting entails adding the blended materials to a melting furnace for melting and utilizing degassing and slag removal techniques to clear impurities from the melt. Forging is the process of forming round billets, where the molten aluminum, after melting, is passed through a deep well forging system and cooled to forge round billets of different specifications.