Speaking of chemical pumps, in the industrial application of more and more widely, especially in the chemical industry, corrosion-resistant chemical pumps play an increasingly important role. Under normal circumstances, due to the special nature of the chemical pump environment, it is generally metal or fluorine plastic F46, the general structure of its own metal is extremely vulnerable to corrosion, temperature, humidity and air and other external environment Will lead directly to the metal corrosion phenomenon, so corrosion-resistant chemical pump our common material is stainless steel and fluorine plastic F46 both. Corrosion-resistant chemical pump anti-corrosion measures Jiangsu liquid springs Valve Manufacturing Co., Ltd. engaged in corrosion-resistant chemical pump R & D and manufacturing for many years, corrosion-resistant chemical pump corrosion quite experience. Chemical pumps are basically suitable for corrosive media, and for the classification of corrosion, there are two general classification methods, one is based on the mechanism of corrosion classification, the other is based on the causes of corrosion and appearance classification. According to the mechanism of corrosion to points, the main can be divided into electrochemical corrosion and chemical corrosion. Electrochemical corrosion is mainly refers to the metal material in contact with the electrolyte solution, due to the occurrence of surface electrode reaction and corrosion, the reaction is generally redox reaction, the main factor is the environmental humidity and temperature problems; Chemical corrosion refers to the metal surface in contact with the media will occur a more intense chemical reaction, so that the metal is subject to some damage, the main cause of this corrosion is the high temperature and dry environment. According to the appearance and causes of corrosion classification can be divided into, peel corrosion, industrial atmospheric corrosion, high temperature oxidation corrosion and atmospheric corrosion of the oceans and so on. Jiangsu liquid spring valve also pointed out that in those more serious industrial pollution in the environment, because the air of those sulfide, carbon dioxide and hydroxide and other volatile substances more, but also contains some industrial dust, which are easy to cause Corrosive media. These media in a humid environment, the acid gas will be combined with water to form inorganic acids, these acids have a strong corrosion resistance, it will induce corrosion. In an industrial atmosphere, the equipment is caused by a combination of electrochemical corrosion and direct chemical attack. The essence of all corrosion, in fact, is the oxidation of metal elements to form ions after they have lost their electrons. The main difference between electrochemical corrosion and industrial atmospheric corrosion is the difference between the two environments. Equipment corrosion and equipment materials are closely related to the chemical material selection process, we should focus on the corrosion occurred, pay attention to the selection of reasonable, to fully take into account the nature of the media, the temperature of the environment and the pressure of operation, etc., according to the chemical The requirements of raw materials design equipment structure and type. The design of the structure should focus on the production requirements and stress characteristics in the production and operation of chemical equipment. Jiangsu liquid spring valve also stressed that in the design need to pay attention to the following aspects: First, the product structure of the product requirements should be with the production of chemical Product corrosion resistance requirements consistent; followed by attention should be paid to the chemical equipment operating stability and fluency to prevent the corrosion of the media with the pause, heat load distribution is not uniform and the condensation of steam and corrosion products accumulation; finally Should pay attention to the protection of external forces, to prevent fatigue caused by alternating stress corrosion. (Editor: Xiaoxia QQ:) Recommended reading: 2017 exhibition information
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