Tray type cable tray is a semi sealed cable tray, which is very similar to the galvanized trough type cable tray. It is perforated at the bottom for heat dissipation. It is mainly used for horizontal or vertical laying of control cables and communication cables, and for the installation of power cables.
Advantages:
1. The shielding performance of galvanized tray type bridge is also very good, which can also prevent signal interference and dust. Very tolerant. (dustproof)
2. Simple structure, light and beautiful appearance, light weight, convenient installation, the biggest advantage: there is heat dissipation effect at the bottom, and the fire prevention ability is very good. (as the bottom is perforated, the bearing capacity is limited, so the thickness of the plate should be fixed.
The aluminum alloy cable tray has the characteristics of beautiful appearance, simple structure, unique style, large load capacity and light weight. After anodizing the surface of aluminum alloy cable tray, it is not only anti-corrosion, but also anti electromagnetic interference, especially anti shielding interference, which is irreplaceable for steel cable tray. Aluminum alloy bridge has important practical value in modern industry, modern national defense and modern high technology.
What are the characteristics of aluminum alloy materials
1. Aluminum alloy is light and soft. The density of aluminum is 2171 g / cm3, about one third of the density of steel (7187 g / cm3); Young's modulus is also about one third of that of steel.
2. Good strength. The tensile strength of pure aluminum is about 80 Mn / m2, which is one fifth of that of low carbon steel. However, after heat treatment and alloying strengthening, its strength will be greatly increased. For example, 6005a-t6, the commonly used material for aluminum alloy car body, has a tensile strength of at least 360 Mn / m2, which can reach the corresponding strength value of low carbon steel.
3. Good corrosion resistance. One of the characteristics of aluminum alloy is that a dense oxide film will be formed on the surface when contacting with air, which can prevent corrosion, so the corrosion resistance is good. If the "alumina film treatment method" is applied to it, corrosion can be prevented comprehensively.
4. Good processing performance. The profiles used for railway vehicles have good extrusion performance, and can be easily processed by secondary machining and bending.
5. Easy to regenerate. The melting point of aluminum is low (660 ℃) and the regeneration is simple. The waste treatment is also pollution-free, conducive to environmental protection and in line with the sustainable development strategy. According to the structure, manufacturing and application of aluminum alloy car body, the following principles shall be followed when selecting materials:
1. From the aspect of light weight, it is required to have good strength, weldability, extrudability and maintenance;
2. In terms of service life, high corrosion resistance and surface treatment are required;
3. In terms of manufacturing efficiency, high weldability, extrusion processability and molding processability are required
