Stainless steel wire mesh is heat-resistant, acid-resistant, corrosion-resistant and wear-resistant. Selected materials and specifications

Stainless steel wire mesh is heat-resistant, acid-resistant, corrosion-resistant and wear-resistant. Selected materials and specifications

is heat-resistant, acid-resistant, corrosion-resistant and wear-resistant. These characteristics make stainless steel wire mesh widely used in mining, mining engineering, chemical, biological, food, machinery, medicine and other industries.

Stainless steel screen (also known as stainless steel mesh, stainless steel filter) 　　
Stainless steel screen refers to mesh products made of stainless steel materials such as stainless steel wire or plate. 　　
Stainless steel screen material: SUS302, SUS304, SUS316, SUS304L, SUS316L, SUS310, SUS310s, SUS430 and other stainless steel grades. 　　
From the production process, it can be divided into: weaving, welding, stretching, punching and other methods; among them, weaving can be divided into plain weave, twill weave, plain Dutch weave, twill Dutch weave, reverse Dutch weave and other processes. 　　
According to the different processes and material forms, it can be divided into: stainless steel woven square hole mesh, stainless steel mat mesh, stainless steel welded mesh, stainless steel steel plate mesh, stainless steel punching mesh and other varieties. 　　
Features of stainless steel mesh: 　　
◆ Good acid, alkali and rust resistance; 　　
◆ High strength, strong tensile force, toughness and wear resistance, durable; 　　
◆ High temperature oxidation resistance, 304 stainless steel mesh can withstand a temperature of 800 degrees Celsius, 310S stainless steel mesh can withstand a temperature of up to 1150 degrees Celsius; 　　
◆ Normal temperature processing, that is, easy plastic processing, makes the use of stainless steel mesh diversified; 　　
◆ High finish, no surface treatment is required, and maintenance is convenient and simple. 　　
Uses of stainless steel mesh: Stainless steel mesh is widely used for screening, filtration and protective decoration, and its application range covers mining, petroleum, chemical, food, medicine, machinery manufacturing, architectural decoration, electronics, aerospace and other industries. It
is used for screening and filtration under acid and alkali environment conditions and other special conditions. It is used as mud mesh in the petroleum industry, stainless steel screen filter in the chemical fiber industry, and pickling mesh in the electroplating industry.
The types of stainless steel used to make stainless steel wire mesh are generally 201 202 304 316, and 202 and 304 are used more.
316 and 317 stainless steel (the performance of 317 stainless steel is shown below) are stainless steels containing molybdenum and chromium. The molybdenum content in 317 stainless steel is slightly higher than that in 316 stainless steel. Due to the molybdenum in the steel, the overall performance of this steel is better than that of 310 and 304 stainless steel. Under high temperature conditions, when the concentration of sulfuric acid is lower than 15% and higher than 85%, 316 stainless steel has a very wide range of uses. 316 stainless steel also has good resistance to chloride corrosion, so it is usually used in marine or other large water environments. The maximum carbon content of 316L stainless steel is 0.03, which can be used in applications where annealing cannot be performed after welding and maximum corrosion resistance is required. The corrosion resistance of 316L stainless steel is better than that of 304 stainless steel, and it has good corrosion resistance in the production process of pulp and papermaking. Moreover, 316 stainless steel is also resistant to erosion by marine and corrosive industrial atmospheres. 316 stainless steel has good oxidation resistance in intermittent use below 1600 degrees and continuous use below 1700 degrees. It is best not to continuously use 316 stainless steel in the range of 800-1575 degrees, but when 316 stainless steel wire mesh is used continuously outside this temperature range, the stainless steel has good heat resistance. 316L stainless steel has better resistance to carbide precipitation than 316 stainless steel and can be used in the above temperature range.
Annealing is carried out in the temperature range of 1850-2050 degrees, followed by rapid annealing and then rapid cooling. 316 stainless steel wire mesh cannot be overheated for hardening.

316 stainless steel has good welding properties. It can be welded using all standard welding methods. Depending on the application, 316Cb, 316L or 309Cb stainless steel filler rods or electrodes can be used for welding. In order to obtain the best corrosion resistance, the welded section of 316 stainless steel wire mesh steel needs to be annealed after welding. If 316L stainless steel is used, no post-weld annealing is required.

Stainless steel is made of chromium and nickel added to iron to form chromium-nickel stainless steel. It is a better stainless steel. The wire mesh processed from this material is called "stainless steel wire mesh". A large amount of nickel is added to this stainless steel to obtain a single austenite structure, thereby improving its corrosion resistance and processability. It has strong plasticity and toughness at room temperature and low temperature, is non-magnetic, and has good resistance to intergranular corrosion.
1. The effect of nickel on stainless steel can only be fully manifested when it is combined with chromium. Nickel is an alloying element that forms austenite. When nickel and chromium are used in a reasonable combination, the metallographic structure can be changed from single-phase ferrite to austenite and ferrite dual-phase structure. After heat treatment and other steps, the strength can be improved, so that it has stronger stainless corrosion resistance and good deformation properties.
2. Chromium plays a major role in the corrosion resistance of stainless steel: Chromium is the main element that determines the corrosion resistance of stainless steel, because the presence of chromium in steel can make stainless steel passivate in an oxidizing medium, that is, a very thin film is formed on the surface, and chromium is enriched in this film. The higher the chromium content in steel, the stronger the corrosion resistance. In addition, chromium can play a good strengthening role in the mechanical properties and process properties of steel.
3. The influence of impurities on performance
When the carbon content is between 0.1% and 0.3%, after annealing, carbon will precipitate on the lattice boundary in the form of graphite, destroying the bonding force between grains, strongly reducing the strength and plasticity of nickel, and making processing deformation difficult. In addition, carbon and chromium have a strong affinity and can form a series of carbides. The higher the carbon content in steel, the more chromium carbides are formed, the chromium content in the solid solution is relatively reduced, and the corrosion resistance of steel will be reduced. Sulfur is a harmful impurity. Sulfur and nickel form Ni3S2 compounds. Ni3S2 and nickel form a low melting point eutectic at 625℃ and are distributed on the grain boundaries. When the heat deformation temperature exceeds the eutectic melting point, it will crack along the grain boundaries, resulting in the so-called "hot brittleness" phenomenon. Ni3S2 generated by nickel and sulfur at room temperature can cause cold brittleness.