Sintered mesh--sintered filter element products

Dashang Wire Mesh provides industrial filtration and screening solutions, among which sintered filter elements are one of our main products. Good filter elements require not only advanced welding technology and perfect sintering technology, but how to judge the quality of sintered filter element products?

1. Appearance quality:

The surface of the filter element should be flat and smooth, without defects such as unevenness, holes, deformation, and severe color difference. The welding parts on the surface should be firm and flat, without cold welding, leaking welding, etc.

2. Dimensional accuracy:

Including the outer diameter, inner diameter, length and other dimensions of the filter element, they should meet the design requirements and relevant standards, and the dimensional deviation should be within the allowable range.

3. Filtration accuracy: 

Filtration accuracy is an important indicator to measure the filtration performance of sintered filter elements. Filter elements of different materials and uses have different filtration accuracy requirements.

4. Strength and toughness: 

The filter element should have sufficient strength and toughness to withstand certain pressure, impact and vibration, and not be easy to break or damage. For example, during use, the filter element should be able to withstand normal filtration pressure and backwashing pressure without problems such as rupture and deformation.

5. Flow characteristics: 

Under a certain pressure difference, the flow rate of the filter element should meet the design requirements and ensure the normal operation of the system. The flow characteristics are related to the porosity, filtration accuracy, material and other factors of the filter element. Generally speaking, the higher the porosity and the lower the filtration accuracy, the greater the flow rate.

6. Pollution holding capacity: 

Pollution holding capacity refers to the amount of pollutants that the filter element can hold. The greater the pollution holding capacity, the longer the service life of the filter element. Pollution holding capacity is related to the material, structure, porosity and other factors of the filter element. Generally speaking, the filter element with a multi-layer structure and high porosity has a stronger pollution holding capacity.

7. Corrosion resistance: 

Depending on the use environment, the filter element should have corresponding corrosion resistance and be able to resist the erosion of chemical substances such as acids, alkalis, and salts. For example, in the chemical, petroleum  and other industries, the filter element may be exposed to various corrosive media, so it needs to have good corrosion resistance.

Other aspects:

Material safety:  If the filter element is used in the food, medicine and other industries, the material should comply with the relevant food safety standards and medical and health standards, and will not cause harm to human health. For example, filter elements made  of food-grade stainless steel such as 304 and 316L should meet the requirements of relevant national standards.

High temperature performance: For filter elements used in some high temperature environments, they should have good high temperature resistance and be able to work normally at high temperatures. For example, in industries such as aerospace and petrochemicals, filter elements may face the test of high temperatures, so they need to have high high temperature resistance.

Cleaning performance: The filter element should be easy to clean and backwash, and be able to maintain good filtration performance during use. The cleaned filter element should be able to recover to a filtration accuracy and flow rate close to the initial one.

ervice life:The service life of the filter element should meet the design requirements and the needs of the use scenario, and under normal use and maintenance, it can reach the specified service time. The service life is related to factors such as the material, structure, filtration performance, and use environment of the filter element.