Stainless steel surface treatment and prevention of basic peristaltic pump

　　 The basic peristaltic pump system consists of three parts: the peristaltic pump driver, the peristaltic pump head, and the peristaltic pump tube.

　　 Peristaltic pump stainless steel needs to have unique strength, high wear resistance, superior anti-corrosion performance and excellent characteristics such as not easy to rust. Therefore, it is widely used in chemical industry, food machinery, electromechanical industry, environmental protection industry, decoration industry, etc., giving people a gorgeous and noble feeling.

　　 The application and development prospect of stainless steel will become wider and wider, but the application and development of stainless steel largely determines the development level of its surface treatment technology.

　　 1. Common surface treatment methods for stainless steel

　　 The main components of stainless steel generally contain metal elements such as chromium (Cr), nickel (Ni), molybdenum (Mo), and titanium (Ti). Common stainless steel: chromium stainless steel, containing Cr≥12%; nickel-chromium stainless steel, containing Cr≥18%, containing Ni≥12%. Classification from the metallographic structure of stainless steel: There are austenitic stainless steels such as: 1Cr18Ni9Ti, 1Cr18Ni11Nb, Cr18Mn8Ni5. Martensitic stainless steel such as: Cr17, Cr28, etc. Generally called non-magnetic stainless steel and magnetic stainless steel.

　　 2. Common stainless steel surface treatment methods

　　 Commonly used stainless steel surface treatment technology has the following treatment methods: surface natural whitening treatment; surface mirror bright treatment; surface coloring treatment.

　　1. Whitening treatment of natural surface color: In the process of processing, stainless steel undergoes coiling, edge binding, welding or artificial surface fire roasting and heating treatment to produce black oxide skin. This hard gray-black oxide scale is mainly composed of NiCr2O4 and NiF EO4. In the past, HF and HNO3 were generally used for strong corrosion removal. However, this method is costly, pollutes the environment, harmful to the human body, and corrosive, and is gradually eliminated.

　　2. Surface mirror bright treatment: According to the complexity of stainless steel products and the different requirements of users, mechanical polishing, chemical polishing, electrochemical polishing and other methods can be used to achieve mirror gloss.

　　3. Surface coloring treatment: stainless steel coloring not only imparts various colors to stainless steel products, increases the variety of products, but also improves the wear resistance and corrosion resistance of the products.