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1. Net drawing: it refers to the process of knitting stainless steel wire mesh with low mesh number. Due to the looseness of the warp, the net surface is soft, the net surface is bulging, and the net edge is loose (the edge of the lotus leaf), etc. the soft net surface becomes compact, neat and compact through the special machinery - net drawing machine. The Electropolishing of washing and stainless steel wire mesh is usually carried out synchronously or continuously, and most of the equipments used are compound machines with cleaning and polishing functions at the same time.

2. Flat net: it refers to the process that the pointer rolls the net surface (automatically rewind after pulling), the net surface is too tough, the net edge is bent, etc. of some woven nets. Guangdong flat net manufacturer makes the net surface soft, the net edge is flat, and no rewind after pulling, so it is convenient to use.

3. Electropolishing: the surface polishing of stainless steel wire mesh, copper, iron, aluminum and other deep-processing products of wire mesh refers to reducing the roughness of the metal surface (essentially removing the oxide film on the metal surface), increasing the finish, and making the metal surface obtain a mirror surface

General brightness and texture (300 series stainless steel wire mesh has better effect). Using professional electropolishing equipment, the thickness of polishing layer can be precisely controlled.

The surface density of polished stainless steel wire mesh or other products increases, and the corrosion resistance (the polished workpiece can be used in nitric acid solution) is significantly improved. After being drawn, the width of the woven stainless steel wire mesh remains the same and the length increases slightly. The details are as follows: black annealed wire is also called oiled wire after being oiled.

This process is suitable for the treatment of internal and external surfaces with complex shapes, such as deep-processing products of stainless steel wire mesh, such as stainless steel mesh, stainless steel basket, stainless steel filter cartridge and other products.

4. Net washing: refers to the phenomenon that the surface of some stainless steel wire mesh is covered with grease, rust or other dirt, which affects the surface quality or product color. Through the use of cleaning solution containing chemical agents and special cleaning machine, dryer and other equipment, the wire mesh is soaked and scrubbed, degreased, rust or other dirt is removed, so as to restore the original color of the wire mesh The process of improving (to production standard) the quality of shape and mesh.

In order to improve the surface quality of finished stainless steel mesh and its deep-processing products, and to achieve the purpose of convenient use or promotion of sales, it is often necessary to "re" process or finish its surface. The common processes include drawing mesh, flat mesh, washing mesh and electropolishing. Note: the purpose of washing the net is to remove oil and dirt. For some metal products, such as black annealed wire, black silk cloth, black silk rope, and machine parts, a thin layer of lubricating oil should be applied on the surface of them in order to prevent the surface from rusting (being oxidized and corroded) due to long storage time.

The corrosion resistance of stainless steel wire mesh mainly depends on the surface passivation film. If the film is incomplete or defective, stainless steel will still be corroded. In engineering, pickling and passivation are usually carried out to make the corrosion resistance potential of stainless steel play a greater role. Stainless steel wire mesh has good corrosion resistance, high temperature oxidation resistance, good low temperature performance and excellent mechanical properties.

　　。 Its main purpose is to prevent corrosion and rust. For other industries, if it is not for anticorrosion purpose, it is only based on cleaning and aesthetic requirements, while stainless steel materials do not need pickling and passivation. However, pickling and passivation are needed for the welds of stainless steel equipment, and the passivation film of stainless steel wire mesh is repaired to improve the corrosion resistance. In the process of forming, assembling, welding and weld inspection of stainless steel equipment and components, such as flaw detection, pressure test and construction marking, surface oil stain, rust, non-metallic dirt, low melting point metal pollutant, paint, welding slag and spatter are brought. These substances affect the surface quality of stainless steel equipment and components, destroy the oxide film on its surface, and reduce the stainless steel wire mesh It can even lead to stress corrosion cracking. Stainless steel wire mesh surface cleaning, pickling and passivation can not only improve corrosion resistance, but also prevent product pollution and obtain beautiful appearance. Therefore, it is widely used in acid, alkali environment screening and filtration, chemical filler, petroleum screen and other industries. The requirement of pickling and passivation on the surface of vessels made of stainless steel wire mesh and composite steel plate with anti-corrosion requirements is for the purpose of filtration used in petrochemical industry. Because these equipment are used in the situation of direct contact with corrosive medium, it is necessary to pickling and passivation in order to ensure the corrosion resistance.

Article origin: Jiangmen Pingwanghttp://m.mm-institute.com