亚娱体育手机官网（中国）有限公司

　　There are many factors affecting the service life of solenoid valve products, and corrosion of solenoid valve is one of the important factors. Extending the service life of the solenoid valve and improving the safety of the project, corrosion prevention of the solenoid valve is an important consideration. How can the solenoid valve product be effectively protected? What are the matters needing attention in the purchase? You need to know the following ways.

　　Selection of corrosion resistant materials according to media type

　　In actual production and application, solenoid valve is faced with a variety of media, even if the same medium, in different pressure, temperature and concentration, the corrosion rate of materials is also different. For example, aluminum is highly corrosive in concentrated nitric acid with a concentration of more than 80%, but not in moderate or low nitric acid. The corrosion of carbon steel is most serious in 50% sulfuric acid. When the concentration reaches above 90%, the corrosion decreases sharply. Therefore, in the purchase of solenoid valve products, you can specifically analyze the types of media, as well as different concentrations of media on the corrosion of materials, but also directly to the manufacturer to consult.

　　Selection of corrosion resistant solenoid valves

　　Corrosion-resistant solenoid valves are specifically designed for corrosive media solutions, many corrosion-resistant solenoid valves use non-metallic materials as the solenoid valve cavity and media contact surface. Materials such as natural rubber, polytetrachloroethylene, etc. not only have good corrosion resistance, as long as the project environment pressure, temperature in line with the characteristics of materials, but also play a role in saving precious metals. For example, Shanghai Juliang as a domestic manufacturer of high-end solenoid valves, its products not only metal corrosion-resistant solenoid valve equipment, but also the use of non-metallic material treatment media and the cavity wall contact, customers can according to their actual conditions of procurement, but also to Juliang custom-made.

　　Surface treatment of solenoid valve

　　Surface treatment of solenoid valves can be divided into thermal spray and spray coating. Thermal spraying is one of the technologies for adding protective coating on the surface of equipment. Thermal spraying is the use of high energy density heat sources, such as gas combustion flame, arc, plasma arc, electrothermal, gas explosion, etc., to heat and melt metal or non-metallic materials, spraying in the form of atomization to the pretreated basic surface, forming spray coating. Thermal spraying can improve the corrosion resistance, wear resistance and high temperature resistance of solenoid valve surface, and prolong the service life of products.

　　Spray coating is a more common method, coating belongs to non-metallic materials, coated on the metal surface or internal cavity, can effectively isolate the medium and atmosphere, to achieve anticorrosion purposes.

　　Control corrosion environment

　　Control of corrosion environment is mainly for the electromagnetic valve in the working environment, for example, can effectively control the environment of dust, steam, smoke and toxic gases, etc., to maintain a clean and dry environment.