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Views: 334 Author: Zora Publish Time: 2025-07-30 Origin: Site
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>> (5) Deep processing (optional)
The production of aluminum profiles is a process of converting aluminum alloy raw materials into profiles with specific shapes, sizes and performance requirements, covering multiple links such as alloy melting, extrusion molding, heat treatment, surface treatment and deep processing. Each link directly affects the quality, performance and appearance of the product.
Purpose: Melt the original aluminum ingot and alloy elements (such as magnesium, silicon, copper, zinc, etc.) in proportion to form the target aluminum alloy.
Steps:
Raw material inspection
High temperature melting in the melting furnace (about 700°C)
Degassing, slag removal, refining
Casting (casting by casting machine)
Homogenization (improve tissue uniformity and facilitate extrusion)
Purpose: Extrude the aluminum alloy cast rod into a profile with the required cross-sectional shape through a die.
Steps:
Preheat the cast rod to 450~500°C
Press the cast rod into the extrusion barrel, and the aluminum liquid flows out through the mold to form a cross-section profile
After the profile is ejected from the mold, it is pulled out by a traction machine and cooled (air cooling or water cooling)
Online straightening to ensure straightness
Fixed length cutting
The design of the extrusion die has a great influence on the accuracy and surface quality of the profile, and the die needs to be customized according to the product structure.
Purpose: Improve the mechanical properties of aluminum profiles through artificial aging (such as T5, T6).
Steps:
The profile enters the aging furnace and is kept warm at 170~200°C
Different alloys correspond to different aging curves
Strength and hardness are significantly improved after aging
According to customer needs and product uses, aluminum profiles can be subjected to the following surface treatments:
Process Features and uses
Anodizing
Enhances corrosion resistance, uniform surface, silvery white or colored
Electrophoretic
coating High gloss, strong adhesion, good texture
Powder coating
Rich colors, strong weather resistance, suitable for outdoor products
Wood grain transfer
Beautiful and decorative, commonly used in home decoration profiles
Wire drawing/polishing
Smooth surface, strong metal texture, enhances decorative effect
According to the terminal use, aluminum profiles can also be further processed, such as:
Drilling, tapping, milling, slotting
Welding, assembly
Precision cutting, CNC processing
High-quality aluminum profiles must be guaranteed by a strict quality management system. Common control points include:
Raw material entry inspection (component analysis)
Mold debugging and product first inspection
Temperature control and speed control during extrusion
Film thickness, adhesion, and color difference detection before and after surface treatment
Finished product hardness, size, tolerance, and corrosion resistance testing
Through ISO quality management system or other third-party certifications (such as SGS, CE), improve customer trust and export traffic.
The production of aluminum profiles is a highly integrated system engineering, which requires full-process coordination from raw materials, equipment, molds, process control to quality inspection. High-quality aluminum profiles are not only reflected in appearance and dimensional accuracy, but also in their inherent strength, durability and stability. With the continuous improvement of market demand, aluminum profile production is also developing towards high automation, intelligence, and green environmental protection.
