What is Sintered Filter Disc
Sintered Filter Discs: Ideal Filter Element for Accurate FiltrationSintering is a high-temperature process in a vacuum environment that fuses all contact points in a woven wire mesh. This process ensures the mesh retains its original weave, with consistent hole size, shape, and micron rating. Sintered wire mesh is available in single-layer or multi-layer designs, offering exceptional strength and rigidity.
Sintered filter discs are crafted through this advanced process, combining metal or non-metal powders under heat and pressure to create a durable yet porous structure. These discs are versatile and can be shaped into various forms, including round, square, oval, and custom designs, to meet diverse filtration needs.
Sintered metal filter disc, is an ideal filter element for accurate filtration.
Powder Metal Sintering Process
The powder metal sintering process includes:
Choosing a powder composition: The metal powder type you use will determine the properties of the finished product, so selecting the right one for your needs is crucial.
Compaction: Once you've selected the right powder for your needs, the next step is to compact it into the desired shape. It is performed using a die press, which applies pressure to the powder to force it into the desired shape. The amount of pressure and the duration of pressing will vary depending on the powder type and the desired final product.
Sintering: After the powder is compacted into the desired shape, it is ready for sintering. Sintering is a process of heating the powder to just below its melting point, allowing the particles to bind and form a solid piece. The length of time and temperature at which the powder is heated will vary depending on the powder type and the desired final product.
According to customers' demand, sintered metal filter discs can also be added outer rings.
Being one of the safest and most secure way to filter liquid or gas, sintered filters are being adapted into different industries.
Sintered mesh filter disc is widely used in filtration process in many industries, it works as gas-liquid separation, oil and fuel filtration.
1. Automotive Industries
Vehicles need clean air, and one of the best ways to ensure dust, dirt, and unwanted liquid do not overflow into the exhaust system is to use sintered filters. From being a vital element in the exhaust pipe to being used as a filter cover for the engine's air filter, there are various uses of sintered filters in the automotive industry. They are even used as sound dampers in the throttle and exhaust system.
2. Domestic and Electronics Industry
Vacuum cleaners, dampers in blenders, filtration units and water purifiers all use sintered filters. The domestic appliance industry is one of the biggest and prevalent applicants of sintered filter.
3. Chemical and Pharmaceutical Industry
Foreign substances cannot be allowed to impure the material at hand and sintered filter elements as well as profiles are prominent in this industry. High pressure, different viscosity level and corrosion properties result in these industries trusting sintered filters for their filtration needs.
4. Nuclear and Energy Industry
Sintered filters play a huge role in nuclear reactors where clean water is used as coolant. Energy industry uses high-pressure and corrosion resistant filters.
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So, Why Sintered Filters?
why sintered filters are used in the above-mentioned industries, instead of any other type of filter?
1. The porosity of sintered filter get more info dictates the outward or inward flow of liquid or gas. Controlled flow of filtering material can be managed without the help of a pressure gauge.
2. Sintered filters and high-pressure situations go hand in hand. When applied in pressure-rich environment, most other filter material tends to fail. You cannot use plastic or paper when the psi is extremely high. That is why sintered filters are trusted.
3. It can operate in a high-temperature environment. A sintered filter steel mesh can resist heat of up to 480°C. If the material or the alloy is changed, the heat resistance also sees changes, which is not possible in any other type of filter.
4. The fact that metal sintered filters can be welded onto the body of the filtration unit, the hassle of getting sealings and constantly checking it is removed. Sintered filters and its lack of sealing requirement helps in elongating the lifespan.
Cleaning method of metal sintered filter element:
The metal sintered filter element can be regenerated and cleaned by physical and chemical methods according to the pollution situation and the chemical properties of the pollutants combined with the physical and chemical properties of stainless steel.
According to several common applications, the cleaning methods are as follows:
1. For decarburization and filtration in the pharmaceutical and chemical fields, back-flushing and back-flushing methods should be used frequently, combined with ultrasonic cleaning, to achieve the best results.
2. In the water production industry, because most of the trapped surface of the filter element is non-water-soluble salts and oxides, it is generally soaked in 5% nitric acid, and the cleaning effect can be achieved without ultrasonic cleaning.
3. Filtration of the original liquid should be combined with the chemical properties of the pollutants, choose the best cleaning.
Note: Frequent online back-flushing (backflushing with pure compressed air or filtered stock solution or clean water for online cleaning) can reduce the number of times of cleaning with the above methods.
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