The quality of filter cartridges can be judged from the following aspects: selection of filter materials; The structure of the filter element; Production process; Finished product testing; Appearance quality, etc.
There are various types of filter materials, including metal mesh, metal felt, glass fiber, plant fiber, soft magnetic materials, etc. The metal mesh is woven from fine metal wires, divided into square mesh and diagonal mesh. It has low flow resistance and can be used in a very high temperature range.
Mainly used for coarse filtration of the system, it belongs to surface filtration and can be repeatedly cleaned and used. The oil suction filter element generally uses a metal mesh filter material of 60-300p.m, and sometimes a metal mesh of 25-200p.m is used in the lubrication system.
There are also 5-20pm metal mesh filter materials available for special occasions now. Metal felt is a felt made of metal fibers, which has the properties of glass fibers and belongs to deep filtration.
It has a maze like three-dimensional structure, high porosity, and low flow resistance. Strong pollution absorption ability, long service life, and can be used in a large temperature range. The accuracy range is 5-20pm. Due to its high price, it is only used for filtering special media or when high temperatures are required, and can be cleaned and reused.