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Aluminum profiles knowledge which

Date:Jan 23,2017

[Aluminum] aluminum alloy profiles comprehensive knowledge:

Aluminum is aluminum rod through the hot melt, extrusion, resulting in different cross-sectional shape of the aluminum material. Aluminum production process includes casting, extrusion and coloring (color include: oxidation, electrophoretic coating, fluorocarbon coating, powder coating, etc.) three processes.

Aluminum by use is divided into:

1. Industrial aluminum: mainly used in aircraft, trains, industrial radiators, automobiles, electrical appliances.

2. Aluminum alloy construction profiles: mainly used for building doors and windows, curtain walls, indoor and outdoor decoration and architectural structure with aluminum.

Aluminum by surface treatment is divided into:

1. Anodized aluminum: profile surface by anodic oxidation, electrolytic coloring or organic coloring.

2. Electrophoretic paint aluminum: profile surface by anodic oxidation and electrophoretic coating compound treatment.

3. Powder coating aluminum: the surface of the thermosetting organic polymer powder coating.

4. Fluorocarbon paint sprayed aluminum: profile surface to polyvinylidene fluoride paint for coating. At present, the widespread use of heat insulation profiles, is to take the strip or pouring composite of an aluminum alloy profile.

Key indicators:

1. Appearance quality: anodized profile surface does not allow electric burns, oxide film off the impact of the use of defects; electrophoresis, powder, fluorocarbon coating paint film should be uniform, clean, smooth, does not allow wrinkles, cracks , Bubbles, flow marks, inclusions and paint film off the impact of the use of defects, but within the 80mm end of the profile to allow local no film. Aluminum profiles of architectural quality affect the appearance of architectural decoration, so the surface of the factory profile must be covered, to avoid transport, the process of stacking surface scratches, bumps, corrosion. Some aluminum alloy on the market there are similar to the shape of water-like lumen, moldy spots phenomenon, reflecting the production process defects.

2. Wall thickness: the wall thickness of the workpiece is one of the main factors affecting the strength of the workpiece, the main section in the project is the force of the site. For example, the minimum nominal wall thickness of the outer window main section shall not be less than 1.4mm.

3. Film thickness: extruded aluminum alloy profiles, the surface corrosion resistance is not strong, to be surface treatment to increase the corrosion resistance of aluminum, wear resistance and aesthetic appearance. Anodized aluminum film thickness level is divided into AA10, AA15, AA20, AA25, electrophoretic coating aluminum film thickness level is divided into A. B. S, powder coating aluminum decorative surface coating minimum local thickness ≥ 40um, fluorocarbon paint sprayed aluminum decorative surface coating thickness due to different coating types, requirements are also different, the average thickness of the second coating ≥ 30um, three coating Average film thickness ≥ 40um, four coated average film thickness ≥ 65um.

4. Chemical composition, mechanical properties: aluminum alloy different grades, the supply of its chemical composition, mechanical properties of technical parameters are different, the customer to control the standard (contract) one by one check.

5. Color and color: different brands, the supply of alloy there is the difference between color and color. It is suggested that the influence of color and chromatic aberration inconsistency on building structure should be taken into consideration when alloy grade and supply status are selected.

6. Resistance to salt spray corrosion, abrasion, weathering, mortar, etc.: This is an important technical parameters of aluminum alloy profiles, reflecting the performance of aluminum profiles, affecting the use.

The above content is based on the actual work of the students encountered problems from the order, for reference, if any problems, timely communication, correction.

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