Stainless steel wire mesh problems

1. Stainless steel wire mesh break:

The stainless steel wire mesh breaks during use and is analyzed by chemical composition analysis, inspection, scanning and spectrometer analysis. The results show that the stress corrosion point is the main cause of the fracture of the stainless steel mesh. Corrosive media is the processing of chloride ions or various aqueous solutions in the humid atmosphere of the ocean in chemical production. The broken wire mesh material is poor, the chemical composition does not meet the relevant technical conditions, the chromium and nickel content are low, and the manganese content is high, so that the corrosion resistance of the steel is lowered, and more dispersed carbide particles appear in the structure. Ferrite greatly reduces the resistance of the wire to stress corrosion points. The fracture of the stainless steel wire mesh mainly breaks along the grain brittle fracture, and the artificial fracture of the steel wire is the normal fracture of the dimple, indicating that most stainless steel wire mesh is stress corrosion fracture. The residual stress generated by wire mesh processing and the presence of stress corrosion sensitive media are the main causes of stress corrosion cracking of steel wires.

2. Stainless steel wire mesh filter blockage:

There are many reasons for the stainless steel mesh filter plugging. Since the particles of the material to be filtered are mostly irregular, they often contain a large amount of particles close to the separation point, and the pore size of the stainless steel mesh is less than or equal to the diameter of the particles, and the particles are stuck. Screening of various viscous powder materials often sticks to the stainless steel mesh, causing clogging. The material is a fibrous material, and there are many flaky particles, and the woven mesh wire is thick and easy to be blocked. The solution is: when the particle size of the material is finer, the more the shale content is, the smaller the sieve size is, the water plays a decisive role in the blockage of the stainless steel screen. When the moisture content of the material is more than 5%, if the material is unconditionally dried, the sieve surface and the sieve hole should be selected in a targeted manner. When the humidity is greater than 8%, it should be sieved by wet method. For materials with more flake particles, it is necessary to change the material crushing mode and the particle size matching of different crushing processes, and select the appropriate solution by causing the causal characteristics.

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