Stainless steel wire mesh is currently the most common, widely used, and largest metal wire mesh on the market. The commonly referred to as stainless steel mesh mainly refers to stainless steel woven mesh.
First of all, let's understand the influence of several main elements in stainless steel on the performance of stainless steel:
1. Chromium (Cr) is the main factor that determines the corrosion resistance of stainless steel. Metal corrosion is divided into chemical corrosion and non-chemical corrosion. At high temperatures, metal directly reacts with oxygen in the air to form oxides (rust), which is chemical corrosion; at room temperature, this corrosion is non-chemical corrosion. Chromium is easy to form a dense passivation film in the oxidizing medium. This passivation film is stable and complete, and is firmly bonded to the base metal, completely separating the base and the medium, thereby improving the corrosion resistance of the alloy. 11% is the lowest limit of chromium in stainless steel. Steels with chromium less than 11% are generally not called stainless steel.
2. Nickel (Ni) is an excellent corrosion-resistant material and the main element that forms austenite in steel. After nickel is added to stainless steel, the structure changes significantly. As the content of nickel in stainless steel increases, austenite will increase, and the corrosion resistance, high temperature resistance, and workability of stainless steel will increase, thereby improving the cold working process performance of steel. Therefore, stainless steel with higher nickel content is more suitable for drawing fine wire and micro wire.
3. Molybdenum (Mo) can improve the corrosion resistance of stainless steel. The addition of molybdenum to the stainless steel can further passivate the surface of the stainless steel, thereby further improving the corrosion resistance of the stainless steel. Molybdenum can not form precipitation in stainless steel to precipitate molybdenum, thereby improving the tensile strength of stainless steel.
4. Carbon (C) is represented by "0" in stainless steel material. A "0" means that the carbon content is less than or equal to 0.09%; "00" means that the carbon content is less than or equal to 0.03%. Increased carbon content will reduce the corrosion resistance of stainless steel, but can increase the hardness of stainless steel.
There are many types of stainless steel grades, including austenite, ferrite, martensite and duplex stainless steel. Because austenite has the best comprehensive performance, is non-magnetic and has high toughness and plasticity, it is used for wire mesh processing. Austenitic stainless steel is the best stainless steel wire. Austenitic stainless steel has 302 (1Cr8Ni9), 304 (0Cr18Ni9), 304L (00Cr19Ni10), 316 (0Cr17Ni12Mo2), 316L (00Cr17Ni14Mo2), 321 (0Cr18Ni9Ti) and other brands. Judging from the content of chromium (Cr), nickel (Ni), and molybdenum (Mo), 304 and 304L wire have good overall performance and corrosion resistance, and are currently the wire with the largest amount of stainless steel mesh; 316 and 316L contain high nickel, and Containing molybdenum, it is most suitable for the drawing of fine wires, and has good corrosion resistance and high temperature resistance. The high-mesh dense-grained mesh is no other than it.
In addition, we need to remind friends of wire mesh manufacturer that stainless steel wire has a time effect. After it is placed at room temperature for a period of time, the processing deformation stress is reduced, so the stainless steel wire after a period of time is better to use as a woven mesh.
Because the stainless steel mesh has the characteristics of acid resistance, alkali resistance, high temperature resistance, tensile strength and abrasion resistance, it is especially suitable for insect screening and filter mesh under acid and alkali environmental conditions. For example, the oil industry is used as a mud screen, the chemical fiber industry is used as a screen filter, the electroplating industry is used as a pickling screen, and the metallurgy, rubber, aerospace, military, medicine, food and other industries are used for gas and liquid filtration and other media separation.
Post time: Jul-23-2021