Cable trays are commonly used materials and facilities for electrical installation in engineering, which are superior to pipelines due to the convenience of laying multiple cables. Especially in the case of system trunk lines and centralized wiring, their superiority is reflected. There are various forms of cable trays, such as slot type tray type ladder type. There are also many types of materials and processes for cable trays, such as stainless steel, aluminum alloy, fiberglass, and other materials; The process is divided into: hot dip galvanizing, electrostatic spraying, galvanizing, and other processes; In addition, according to fire protection requirements, there are fire resistant and fire-resistant cable trays. The performance characteristics of each material and process are different, and cable trays are mainly used to support cable protection cables and manage cables, bringing great convenience to our cable route management.
Galvanized cable tray:
Galvanized cable tray, also known as galvanized cable tray; It is generally understood that galvanized cable trays are considered hot-dip galvanized, but it is actually incorrect. Like galvanized pipes, there are two types of galvanizing for cable trays: cold galvanizing (electro galvanizing) and hot galvanizing (hot dip galvanizing);
Steel is prone to rust and even complete damage in air, water, or soil. The annual steel loss caused by corrosion accounts for about 1/10 of the entire steel production. On the other hand, in order to give steel products and parts a special function on the surface and give them a decorative appearance, electroplating is generally used to treat them.
Due to the fact that zinc is not easily changed in dry air, and in humid air, a dense alkaline zinc carbonate film can be formed on the surface, which can effectively protect the interior from corrosion. And when for some reason, the coating is damaged and a relatively small steel substrate is exposed, zinc forms a micro battery with the steel substrate, making the steel substrate a cathode and protected.
The zinc coating is thick, with fine and uniform crystallization without pores, and has good corrosion resistance;
The zinc layer obtained from electroplating is relatively pure and corrodes slowly in acid and alkali mist, which can effectively protect the steel substrate;
The zinc coating is passivated with chromic acid to form white, colorful military green, etc., which is beautiful and elegant, and has a certain degree of decoration;
Due to the excellent ductility of zinc coating, it can be formed through various processes such as cold stamping, rolling, and bending without damaging the coating.
With the development of scientific and technological production, the electroplating industry involves an increasingly wide range of fields. At present, the application of electrogalvanizing has spread to various production and research departments of the national economy. For example, machine manufacturing, electronic precision instruments, chemical industry, light industry, transportation, weapons, aerospace, atomic energy, etc., have significant significance in the national economy.
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