Custom Aluminum Sheet Metal Back Cover Panel Chassis Case Box Parts

Aluminum shell processing - shell coloring process

(1) Surface pretreatment: chemical or physical methods are used to clean the surface of the aluminum profile shell, exposing the pure matrix, to obtain a complete and dense artificial oxide film.

(2) Anodic oxidation: under certain technological conditions, anodic oxidation occurs on the surface of the aluminum profile after surface pretreatment, and a layer of dense, porous, and strong adsorption AL203 film is generated.

(3) sealing: the pores of the porous oxide film generated after anodic oxidation are closed, so that the anti-pollution, anti-corrosion, and wear, resistance of the oxide film are enhanced. The oxide film is colorless and transparent, using the strong adsorption of the oxide film before sealing, some metal salt is adsorbed and deposited in the film hole, which can make the profile appearance appear natural (silver white) outside many colors, such as: black, bronze, gold, and stainless steel color.

The aluminum profile housing has high flexibility and good anti-leakage function, and the depth can be arbitrarily cut. There is a generously internal circuit board card slot, as slots as the circuit board directly inserted, no need to be fixed, convenience is incomparable to other types of shell. Waterproof can be used in the wild and harsh environmeenvironments

A pure panel is a kind of panel with high aluminum purity. It may contain other metals, but the content is small. Its purity can reach more than 99.00%. Because it does not contain other technical elements, the production process is relatively simple and the price is relatively low. It is the most commonly used series in the conventional industry.

Characteristics of pure aluminum panel

1. Low density: the density of pure aluminum is close to 2700kg / m3, about 35% of the density of iron.

2. Strengthening: the strength of pure aluminum can be more than doubled by cold processing. Moreover, it can be alloyed by adding magnesium, zinc, copper, manganese, silicon, lithium, scandium, and other elements, and further strengthened by heat treatment. Its specific strength can be comparable to that of high-quality alloy steel.

3. Easy processing: aluminum can be cast by any casting method. Aluminum has good plasticity and can be rolled into thin panels and foils; Drawn into pipes and filaments; Extruded into various civil profiles; It can carry out machining such as turning, milling, boring, and playing at the maximum speed that most machine tools can reach.

4. Corrosion resistance: the surface of the aluminum and its alloy is easy to form a dense and solid Al2O3 protective film, which has good resistance to atmospheric and water corrosion, can resist the corrosion of most acids and organic substances, and can resist the corrosion of weak alkali solution by using corrosion inhibitor; The corrosion resistance of aluminum alloy can be improved by adopting protective measures.

5. No low-temperature brittleness: when the temperature of aluminum is below 0 ℃, the strength and plasticity will not decrease but increase with the decrease of temperature.

6. Good conductivity and thermal conductivity: the conductivity and thermal conductivity of aluminum are inferior to that of silver, copper, and gold.

7. Strong reflectivity: the reflectivity of the polished surface of the aluminum to white light is more than 80%. The higher the purity, the higher the reflectivity. At the same time, aluminum has good reflection performance to infrared rays, ultraviolet rays, electromagnetic waves, and thermal radiation.

8. No magnetism, impact, and spark.

9. It has sound absorption, nuclear radiation resistance, and a beautiful appearance.

Surface quality requirements of pure aluminum panel

1. The surface of the panel shall be clean and free from cracks and oxidation sundries.

2. The surface of the panel is allowed to have defects such as indentation, scratch, and roll indentation, but the depth shall not exceed the allowable negative deviation of the panel and the minimum thickness shall be guaranteed.

3. The processed aluminum clad thick panels allowed to have the falling off part of the cladding layer and the bubbles of the cladding layer.

4. Defects within the thickness difference range are allowed to be repaired on the panel.