Professional Cable Tray Manufacturer

The surface protection technology of cable tray has always been the focus of later use and maintenance. Cable tray products should not only choose excellent ones, but also do well in the later stage of instant noodle protection. 
The following upwelling cable tray summarizes 6 methods of bridge surface protection for you, which is very practical! 
1. Galvanizing. 
Compared with hot-dip galvanizing, the process of electrogalvanizing is simpler and the cost is lower. 
There are no special requirements for the structure of the perforated cable tray. 
Electroplating zinc can significantly improve its protection performance after passivation treatment. 
The galvanized coating is generally about 12. 
Therefore, it is not suitable for situations with high corrosion resistance life. 
2. Hot dip galvanizing. 
Under atmospheric conditions, zinc has good corrosion resistance. 
Galvanizing is used as a sacrificial anode to protect cathode metal. 
Its corrosion resistance life depends on the thickness of galvanized coating and corrosion rate. 
The thickness of zinc layer of hot-dip galvanizing is generally more than 65um (455g/m2). 
The bonding surface of zinc and iron forms a layer of zinc-iron alloy, which enhances the adhesion of the zinc layer. 
Atmospheric exposure tests of hot-dip galvanized coatings under different environmental conditions have been carried out abroad. 
From the test results, hot-dip galvanizing can meet the requirements of the service life of cable tray. 
Because hot-dip galvanizing has good corrosion resistance and high ratio of performance to price, steel hot-dip galvanized bridge has been widely used at home and abroad. 
For the components with thin wall and large slenderness ratio, it is easy to produce deformation during hot-dip galvanizing, which needs to be considered in the structure of cable tray and galvanizing process. 
There are standards issued by the Ministry of galvanizing in China. 
There are clear provisions on the selection of electrocoating types, coating thickness, coating adhesion strength, corrosion resistance test and so on. The selection objects of these standards are different, and the content requirements are also different. 
At present, there are many manufacturers producing galvanized bridge in China, and they are also different when referring to the above-mentioned technical standards. 
In order to improve the corrosion resistance of galvanizing, electroplated zinc-nickel alloy or high passivation treatment can be used after galvanizing (such as "electroplated zinc bridge"). 
3. Electrostatic spraying. 
The spraying materials are generally PVC powder, polyester powder or anticorrosive powder. 
The thickness of the coating is about 100. 
Electrostatic spraying has the characteristics of beautiful appearance and good chemical corrosion resistance. 
However, compared with the metal coating, the adhesion strength is low, and the erosion resistance and particle wear resistance are poor. 
There is a problem of deterioration in the process of use, which is easy to cause local coating to fall off, resulting in rust of steel substrate and large area bubbling and spalling of the coating. 
In addition, the anti-ultraviolet ability of the coating is poor, so it is generally not suitable for outdoor use, such as "electrostatic spraying cable tray" produced by modern bridge factory. 
4. Apply antirust paint. 
For the components with large structural size, due to the limitations of zinc pots, baths, ovens and so on, we can only use antirust paint to deal with. 
Although it has the characteristics of low cost and easy to use, it has poor anti-corrosion ability. 
The utility model has the advantages of short service life and heavy maintenance workload, so it is generally not suitable to be used. 
(products such as "antirust paint cable tray"). 
5. Non-metallic cable tray, abbreviated as articulated frame. 
This new cable tray uses flame retardant synthetic resin as adhesive and glass fiber as reinforcement. 
It has high corrosion resistance, electrical insulation performance, and has excellent characteristics such as light weight, high strength, good flame retardancy, bright and beautiful color, reliable use and so on. 
It is suitable for chemical industry, mine and salt spray corrosion areas. 
The use of FRP cable tray can not only save a lot of steel, but also save a lot of maintenance expenses, reduce labor intensity and prolong the service life of the cable.