Stainless Steel Mesh Overview/Introduction/Types/Applications

Overview of Stainless Steel Mesh
　　Stainless steel mesh is mainly used for screening and filtering under acidic and alkaline environmental conditions, as mud mesh in the petroleum industry, as screen mesh in the chemical fiber industry, as pickling mesh in the electroplating industry, and for gas, liquid filtration and other media separation. Generally, stainless steel mesh wire, nickel wire and brass wire are used as materials. The weft wires in the metal wire woven dense mesh are densely arranged, and there are five methods: plain weave, twill weave, plain Dutch weave, twill Dutch weave, and reverse Dutch weave. The specifications of stainless steel mesh are 5 meshes--630 meshes. Stainless steel mesh has the characteristics of stable and fine filtering performance. Various types of stainless steel mesh products can also be designed and manufactured according to user needs.
 

　　Stainless steel mesh is classified by weaving : 1. Plain weave 2. Twill weave 3. Plain Dutch weave 4. Twill Dutch weave 5. Stainless steel wire mesh, divided into plain and twill weave, the specifications of stainless steel wire mesh are 20 mesh--630 mesh.
　　Material: SUS304, 304L, SUS316, SUS316L, 310, 310S, SUS302, etc.
　　Application: Used for screening and filtering under acidic and alkaline conditions, used as mud nets in the petroleum industry, as screens in the chemical and chemical fiber industries, and as pickling nets in the electroplating industry.
Surface treatment of stainless steel: NO.1 Silvery white, matte. Hot-rolled to the specified thickness, annealed and descaled to create a rough, matte surface that does not require surface gloss;
　　NO.2D Silvery white is cold-rolled, then heat-treated and pickled, and sometimes a final light rolling on a rough roller is performed to create a matte surface. 2D products are used for applications that do not require strict surface requirements;
　　NO.2B The gloss is stronger than that of NO.2D. After NO.2D treatment, a final light cold rolling is performed on a polishing roller to obtain an appropriate gloss. This is the most commonly used surface processing, and it can also be used as the first step of polishing;
　　NO.3 Coarse grinding: Grind NO.2D and NO.2B materials with 100~200# (unit) abrasive grinding belt;
　　NO.4 Intermediate grinding: Grind NO.2D and NO.2B materials with 150~180# abrasive grinding belt to obtain a polished surface, which is a general purpose, bright surface with visible grains and mirror reflection;
　　NO.240 Fine grinding: Grind NO.2D and NO.2B materials with 240# abrasive grinding belt;
　　NO.320 Ultra-fine grinding: Grind NO.2D and NO.2B materials with 320# abrasive grinding belt;
　　NO.400 The gloss is close to BA: Grind NO.2B material with 400# polishing wheel.
Stainless steel knowledge
　　Stainless steel refers to steel that is resistant to corrosion by weak corrosive media such as air, steam, and water, and chemically corrosive media such as acids, alkalis, and salts
　　. It is also called stainless acid-resistant steel. In practical applications, steel that is resistant to corrosion by weak corrosive media is often called stainless steel, while steel that is resistant to corrosion by chemical media is called acid-resistant steel. Due to the difference in chemical composition between the two, the former is not necessarily resistant to corrosion by chemical media, while the latter is generally stainless. The corrosion resistance of stainless steel depends on the alloying elements contained in the steel.
1. Types
　　Stainless steel is often divided into martensitic steel, ferritic steel, austenitic steel, etc. according to the organizational state. In addition, it can be divided into chromium stainless steel, chromium-nickel stainless steel, and chromium-manganese-nitrogen stainless steel according to the composition.　
　　1. Ferritic stainless steel: contains 12% to 30% chromium. Its corrosion resistance, toughness and weldability increase with the increase of chromium content, and its resistance to chloride stress corrosion is better than other types of stainless steel.
　　Crl7, Cr17Mo2Ti, Cr25, Cr25Mo3Ti, Cr28, etc. belong to this category. Ferritic stainless steel has good corrosion resistance and oxidation resistance due to its high chromium content, but its mechanical and process properties are poor. It is mostly used for acid-resistant structures with low stress and as oxidation-resistant steel. This type of steel can resist corrosion from the atmosphere, nitric acid and saline solutions, and has the characteristics of good high-temperature oxidation resistance and small thermal expansion coefficient. It is used in nitric acid and food factory equipment, and can also be used to make parts that work at high temperatures, such as gas turbine parts.
　　2. Austenitic stainless steel: contains more than 18% chromium, about 8% nickel and a small amount of molybdenum, titanium, nitrogen and other elements. It has good comprehensive performance and can resist corrosion from a variety of media. Common grades of austenitic stainless steel include 1Cr18Ni9, 0Cr19Ni9, etc. The wC of 0Cr19Ni9 steel is <0.08%, and the steel number is marked as "0". This type of steel contains a large amount of Ni and Cr, which makes the steel austenitic at room temperature. This type of steel has good plasticity, toughness, weldability and corrosion resistance, and has good corrosion resistance in both oxidizing and reducing media. It is used to make acid-resistant equipment, such as corrosion-resistant containers and equipment linings, pipelines, nitric acid-resistant equipment parts, etc. Austenitic stainless steel generally adopts solid solution treatment, that is, the steel is heated to 1050-1150℃ and then water-cooled to obtain a single-phase austenite structure.
　　3. Austenite-ferrite duplex stainless steel: It has the advantages of both austenite and ferrite stainless steels and has superplasticity.
　　Austenite and ferrite structures each account for about half of the stainless steel. In the case of low C content, the Cr content is 18%~28%, and the Ni content is 3%~10%. Some steels also contain alloying elements such as Mo, Cu, Si, Nb, Ti, and N. This type of steel has the characteristics of both austenite and ferrite stainless steels. Compared with ferrite, it has higher plasticity and toughness, no room temperature brittleness, and significantly improved intergranular corrosion resistance and welding performance. At the same time, it also maintains the 475℃ brittleness and high thermal conductivity of ferrite stainless steel, and has the characteristics of superplasticity. Compared with austenitic stainless steel, it has high strength and significantly improved resistance to intergranular corrosion and chloride stress corrosion. Duplex stainless steel has excellent pitting resistance and is also a nickel-saving stainless steel.
　　4. Martensitic stainless steel: high strength, but poor plasticity and weldability.
　　Common grades of martensitic stainless steel include 1Cr13, 3Cr13, etc. Due to the high carbon content, they have high strength, hardness and wear resistance, but their corrosion resistance is slightly poor. They are used for some parts with high mechanical properties and general corrosion resistance requirements, such as springs, turbine blades, hydraulic press valves, etc. This type of steel is used after quenching and tempering.
2. Stainless steel effect
　　Stainless steel will not cause corrosion, pitting, rust or wear. Stainless steel is also one of the strongest materials among metal materials used in construction. Because stainless steel has good corrosion resistance, it can enable structural components to permanently maintain the integrity of engineering design. Chromium-containing stainless steel also combines mechanical strength and high elongation, is easy to process and manufacture components, and can meet the needs of architects and structural designers
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3. Typical uses
　　Most of the use requirements are to maintain the original appearance of the building for a long time. When determining the type of stainless steel to be selected, the main considerations are the required aesthetic standards, the corrosiveness of the local atmosphere, and the cleaning system to be adopted.
　　However, other applications increasingly seek only structural integrity or impermeability. For example, the roofs and side walls of industrial buildings. In these applications, the owner's construction cost may be more important than aesthetics, and the surface may not be very clean.
　　304 stainless steel works quite well in dry indoor environments. However, in rural and urban areas, it needs to be cleaned frequently to maintain its appearance outdoors. In heavily polluted industrial and coastal areas, the surface will be very dirty and even rust. But to achieve the aesthetic effect in outdoor environments, nickel-containing stainless steel is required. Therefore, 304 stainless steel is widely used in curtain walls, side walls, roofs and other construction purposes, but 316 316L stainless steel is best used in severely corrosive industrial or marine atmospheres.
　　Stainless steel sliding door
　　Now, people have fully realized the advantages of using stainless steel in structural applications. There are several design criteria that include 304 and 316 stainless steel. Because the "duplex" stainless steel 2205 has integrated good atmospheric corrosion resistance with high tensile strength and elastic strength, this steel is also included in the European criteria.
　　Product shape
　　In fact, stainless steel is manufactured in full standard metal shapes and sizes, and there are many special shapes. The most commonly used products are made of thin plates and strips, and medium and thick plates are also used to produce special products, such as hot-rolled structural steel and extruded structural steel. There are also round, oval, square, rectangular and hexagonal welded pipes or seamless steel pipes and other forms of products, including profiles, bars, wires and castings.
4. Surface state
　　As will be discussed later, in order to meet the aesthetic requirements of architects, a variety of different commercial surface processing has been developed. For example, the surface can be highly reflective or matte; it can be glossy, polished or embossed; it can be colored, colored, electroplated or etched with patterns on the stainless steel surface, and it can also be brushed, etc., to meet the various requirements of designers for appearance.
　　It is easy to maintain the surface state. Dust can be removed by just occasional rinsing. Due to good corrosion resistance, graffiti pollution or other similar surface pollution on the surface can also be easily removed.
5. Future prospects
　　Stainless steel is unique among metals because it has many of the ideal properties required of building materials, and its development continues. Existing types have been improved to make them perform better in traditional applications, and new stainless steels are being developed to meet the stringent requirements of advanced building applications. Due to continuous improvements in production efficiency and quality, stainless steel has become one of the most cost-effective materials chosen by architects.
　　Stainless steel combines performance, appearance and use characteristics, so stainless steel will continue to be one of the best building materials in the world. 

Stainless steel mesh product introduction
　　Material: stainless steel mesh wire, nickel wire, brass wire.
　　Production is organized according to the mechanical standard JB/T5979-92, which refers to the international standard IS04783/1-1990. The weft wires in the metal wire woven dense mesh are densely arranged, and there are two methods: plain weave and twill weave
　　. Stainless steel is heat-resistant, acid-resistant, corrosion-resistant and wear-resistant. Because of these characteristics, stainless steel wire mesh is widely used in mining, chemical, food, medicine and other industries, mainly for gas, liquid filtration and other media separation.
Stainless steel mesh product classification Classification
by chemical composition
　　①, CR series: ferrite series, martensite series ②, CR-NI series: austenite series, abnormal series, precipitation hardening series. [1]
Classification by metallographic
　　①, austenitic stainless steel ②, ferritic stainless steel ③, martensitic stainless steel ④, duplex stainless steel ⑤, precipitation hardening stainless steel
1. Plain stainless steel mesh: It is the most common weaving method. The main feature is that the density of the warp and weft wire diameters is the same.
2. Stainless steel square mesh Stainless steel square mesh is suitable for petroleum, chemical, chemical fiber, rubber, tire manufacturing, metallurgy, medicine, food and other industries. Stainless steel wire is woven into various specifications of mesh and cloth, which has good acid resistance, alkali resistance, high temperature resistance, strong tensile strength and strong wear resistance.
3. Stainless steel dense mesh material: stainless steel wire weaving: plain weave stainless steel dense mesh, twill weave stainless steel dense mesh, bamboo flower weave stainless steel dense mesh, contrast weave stainless steel dense mesh.
Performance: It has the characteristics of stable and fine filtering performance.
Application: used in aerospace, petroleum, chemical and other industries. Our factory can design and produce various models of products according to user needs. There are also: stainless steel welded mesh, stainless steel plate mesh, stainless steel punching mesh, stainless steel hexagonal mesh (gabion mesh), etc.