There are many factors affecting the service life of solenoid valves. Corrosion of solenoid valve is one of the important factors affecting the performance of solenoid valve. The service life of solenoid valve is prolonged and the engineering safety is improved. Anti-corrosion of solenoid valve is an important consideration. How to effectively protect solenoid valve products, what are the considerations when purchasing? You need to know the following ways.
Selection of Corrosion Resistant Materials Based on Medium Type
In practical production applications, solenoid valves are faced with a variety of media under different pressures, temperatures and concentrations, even in the same medium. The corrosion rate of materials is also different. For example, aluminium is highly corrosive in concentrated nitric acid with a concentration of more than 80%, but not in medium or low concentration nitric acid. Carbon steel is most seriously corroded in 50% sulphuric acid. When the concentration reaches above 90%, the corrosion decreases sharply. Therefore, when purchasing solenoid valve products, we can specifically analyze the type of media and the corrosion degree of different concentration media to the material, and can directly consult the manufacturer.
Selection of Corrosion Resistant Solenoid Valve
Corrosion-resistant solenoid valve is a solution specially designed for corrosive media. Many corrosion-resistant solenoid valves use non-metallic materials as the interface between the cavity and the medium of solenoid valves. Natural rubber, polytetrafluoroethylene and other materials not only have good corrosion resistance, but also can save precious metals as long as the pressure and temperature of engineering environment meet the characteristics of materials. For example, Jiayi solenoid valve is a domestic manufacturer of high-end solenoid valve. Its products not only have metal anti-corrosion solenoid valve equipment, but also use non-metallic materials to treat the medium and cavity wall. Customers can buy according to their actual work situation. It can also be customized to Jiayi.
Surface treatment of solenoid
Surface treatment of solenoid valves can be divided into thermal spraying and painting. Thermal spraying is one of the technologies to add protective layer on the surface of equipment. Thermal spraying is a kind of high energy density heat source, such as flame, arc, plasma arc, electric heating and gas explosion, which is heated or melted after metal or non-metallic materials are heated. Spray layer is sprayed to the basic surface of the pretreatment to form spray layer by atomization. Thermal spraying can improve the corrosion resistance, wear resistance and high temperature resistance of solenoid valve surface, and prolong the service life of products.
Painting is a common method. Coating is a kind of non-metallic material, which can be applied on metal surface or inner cavity to effectively isolate medium and atmosphere to prevent corrosion.
Controlling Corrosion Environment
The control of corrosion environment is mainly aimed at the working environment of solenoid valves. For example, it can effectively control dust, water vapor, smoke and toxic gases in the environment and keep the environment clean. Then air it.
