Electromagnetic valve products easy to corrode? You need to master these methods
There are many factors affecting the service life of solenoid valve, and the corrosion of solenoid valve is one of the important factors. Extending the life of the solenoid valve and improving the safety of the project, the solenoid valve is an important consideration. How should the solenoid valve be protected effectively? What should be the cautions in the selection? You need to know the following methods.
Corrosion resistant materials are selected according to media type
In actual production application, the electromagnetic valve faces medium type is various, even the same kind of medium, the pressure, temperature and concentration of different cases, the corrosion rate of materials also have differences. For example, aluminum is highly corrosive in nitric acid at concentrations of over 80%, but it is not serious in medium and low concentrations of nitric acid. Carbon steel is the most corrosive in the concentration of 50% of sulfuric acid. When the concentration reaches over 90%, the corrosion decreases rapidly. Therefore, when buying the solenoid valve product, can analyze the type of the medium, and the degree of corrosion of the material with different concentration media, also can consult the manufacturer directly.
Select corrosion resistant solenoid valves
Corrosion - resistant solenoid valves are designed to provide solutions to corrosive media. Many corrosion-resistant solenoid valves use non-metallic materials as the contact surfaces of the internal cavity and medium of the solenoid valve. Like natural rubber, the material such as poly (tetrafluoroethylene, not only have good corrosion resistance characteristics, as long as the project environment pressure and temperature in line with the characteristics of the material, also have played an important role in saving the precious metal. For example, Shanghai giant as a domestic high-end solenoid valve manufacturer, and its products not only have metal material corrosion resistance, electromagnetic valve, equipment and non-metallic materials processing contact with cavity wall, customers can purchase according to their own actual conditions, also can put forward to giant good custom.
Solenoid valve surface treatment
Solenoid valve surface treatment can be divided into thermal spraying and spraying paint. Thermal spraying is one of the techniques for adding protective layers to the surface of the equipment. Thermal spraying is the use of high energy density of heat, such as gas combustion flame, arc, plasma arc, electric, gas explosion, etc., after heating the molten metal or nonmetal materials, in the form of atomized spray to the pretreatment of base surface, formation of coating layer. Thermal spraying can improve the corrosion resistance, wear resistance and high temperature resistance of the solenoid valve and prolong the life of the product.
Spraying paint is a more general method, coating belongs to non-metallic material, coating on metal surface or inner cavity, can effectively insulate medium and atmosphere, achieve anticorrosive purpose.
Control corrosive environment
Control corrosion environment mainly for electromagnetic valve's working environment, for example, can effectively control the dust in the environment, water vapor, smoke and toxic gases, etc., keep the environment clean and dry.