What is sintered metal wire mesh filter
Sintered metal wire mesh filter is a filter element product made of multi-layer wire mesh sintered at high pressure and high temperature. Sintered metal wire mesh is a new type of filter material with high strength. The pores of this sintered mesh are interlaced to form a kind of Uniform and ideal filtering structure. Common metal sintered mesh generally has a five-layer structure, which is divided into four parts: protective layer, filter layer, separation layer and support layer. The materials of sintered wire mesh include stainless steel SUS304, SUS316L, etc., super stainless steel (Monel, Hastelloy, etc.). The sintered mesh filter element has high strength and is very suitable for applications under high pressure.
Structure of 5 layer sintered metal wire meshWhy metal wire mesh sintered filters are necessary
The main filter material of metal wire mesh sintered filter element usually adopts multi-layer metal sintered mesh. It is a high-precision porous sintered material made by stacking several layers of stainless steel wire meshes with different parameters according to different structures, and undergoes sintering, pressing, rolling and other processes.
The metal wire mesh sintered filter element has the characteristics of high precision, good permeability, high strength, strong corrosion resistance, easy cleaning and reverse cleaning, not easy to damage, and no material detachment.
Wire mesh sintered filter element is mainly used for the filtration of polyester, oil, pharmaceutical, food and beverage, chemical products, and also for the filtration of media such as water and air.
Wire mesh sintered filter element covers a wide range of sizes and specifications, all size specifications can be designed and produced according to customer requirements, and suitable products can also be designed and recommended according to operating conditions and requirements.
Products you may need
Sintered metal mesh filter disc
The sintered wire mesh filter disc is cut from sintered metal wire mesh. The thickness, size and shape of the filter disc are customized according to the customer's requirements. The customer can also choose whether to wrap the edge of the filter disc.
Stainless steel sintered wire mesh filter
The stainless steel sintered mesh filter element is an ideal product for high pressure occasions. The pressure resistance of the filter element can replace the traditional glass fiber filter element, especially in some high temperature environments. The stainless steel sintered wire mesh filter element is more adaptable to bad environments and still has stable performance under severe conditions.
Perforated plate metal sintered filter
It is composed of a standard material punching plate and several layers of square mesh (or dense mesh) composite sintered into one. Because the pressure-resistant skeleton and the filter screen are sintered together, it has more excellent anti-cleaning effect and small pressure drop loss. It has been widely used in water treatment, beverage, food, metallurgy, chemical and pharmaceutical industries.
Fluidized plate
Fluidized plates are used for gas distribution control, powder material transfer and fluidization operations, and are widely used in industrial processes. Fluidized bed technology is an important means of mass transfer, heat transfer and chemical reaction in chemical process. Among them, the control of the gas distribution state requires a sintered screen with good air permeability.
Micro filter element for valves
The micro valve filter element is generally welded by vacuum electron beam. It is often used in the filtration of hydraulic oil or gas in various servo valves in hydraulic and pneumatic control systems. This filter element has high precision, good strength and rigidity, low resistance, large flow, high cleanliness, convenient use, stable filter holes, and long service life.
Monel sintered wire mesh
Monel sintered wire mesh is a kind of sintered mesh processed from monel alloy. Because of the wear resistance and corrosion resistance of Monel alloy, the service life of the sintered wire mesh is greatly improved, which is longer than that of the sintered wire mesh of ordinary materials. It is often used to filter out impurities such as sediment in seawater.
Manufacturing method of stainless steel sintered mesh
1. Material preparation: neatly stack the multi-layer mesh sheets to be sintered together in the order required by the process, and fix the four corners by spot welding to form a sintered mesh;
2. Arranging the net: place multiple sintering nets on the material support plate one by one, with an isolation layer between each sintering net, place a material pressure plate at the top of the sintering net, and place the stacked material support plate , The sintering network and the material pressing plate are loaded into the sintering furnace;
3. Vacuuming: vacuumize the sintering furnace.
4. Heating: heated by the heating device, when the temperature in the sintering chamber rises to 295-305 °C, hydrogen is introduced into the sintering chamber to make the pressure in the sintering chamber 39-41Pa, and the heating in the sintering chamber will continue to be heated. The temperature rises to 1200℃-1300℃;
5. Open the hydraulic mechanism to pressurize: inject circulating cooling liquid into the cooling channel of the metal support rod, and start the hydraulic mechanism at the same time, so that the lower end of the heat-resistant ejector rod is pressed against the material pressing plate, and the pressure at the sintering network is 0.5-1.5 kg. /cm²;
6. Insulation: keep the pressure and temperature for 4-10 hours;
7. Cool down naturally and remove the pressure: turn off the heating device, remove the pressure at the same time, and slowly cool down to 1080°C - 1120°C;
8. Insulation: keep the temperature at 1080℃-1120℃ for 1-2 hours;
9. Rapid cooling: close the hydrogen inlet valve, introduce a cooling gas with a pressure of 1.9-2.1 atmospheres through the cooling gas inlet, and discharge it through the cooling gas outlet, so that the temperature rapidly drops to 280℃-310℃ within 15 minutes;
10. Natural cooling: stop the input of cooling gas, and rely on circulating cooling water to slowly cool it down to 35°C - 45°C;
11. Release from the furnace: remove the material pallet, sintering network and material pressing plate out of the sintering furnace, and go through negative pressure vacuuming, rolling, leveling, cleaning, drying, inspection and packaging to make a finished stainless steel sintered mesh.
Interface of metal sintered mesh filter element
The connection interface of the wire mesh sintered filter element is complete and very convenient, and the appropriate connection method can be selected according to the user's use. DOE, DHKC, SK, SKNC, PT34-44, 34, 37, 4M, 19H, A22, DH116NC, IS116, M20, M30, M36, M42, etc.), quick snap connection, various threaded connections, flanges Connection, pull rod connection, special customized interface and other connection methods.
Features of sintered mesh filter element
1. The standard five-layer net consists of a protective layer, a precision control layer, a dispersion layer and a multi-layer reinforcement layer;
2. High strength and good rigidity: It has extremely high mechanical strength and compressive strength, good processing, welding and assembly performance, and is easy to use.
3. Uniform and stable precision: uniform filtering performance can be achieved for all filtering precisions, and the mesh does not change during use.
4. Wide range of use environments: it can be used for continuous filtration at temperatures from -200°C to 600°C.
5. High precision: uniform surface filtration performance can be exerted on the filtration particle size of 1-100um.
6. Cleanability: Due to the surface filter structure, cleaning becomes simple. It can be cleaned by countercurrent water, filtrate, ultrasonic, melting, baking, etc.
Advantages of sintered metal wire mesh filters
1. The sintered filter element has good buffer performance and long replacement cycle.
2. The sintered filter element has high mechanical strength, good stability and is not easy to deform.
3. The high temperature resistance of the sintered filter element can be used in a high temperature environment of 550 degrees Celsius, and it can be used intermittently in a high temperature environment of 800 degrees Celsius.
4. The sintered filter element is resistant to certain acid and alkali, but for the liquid with strong oxidation and strong corrosiveness, the sintered filter element has certain advantages.
5. The pressure is stronger when working online and offline, and the pressure resistance is better.
6. The sintered mesh filter element can be cleaned and used repeatedly without affecting production, which is more cost-effective than other disposable metal filter elements.
7. The sintered mesh filter element has almost no dirt-holding capacity, and it is cleaned in time to ensure the stability of the filtration value.
Application of metal sintered wire mesh filter
1. Used as dispersing cooling material in high temperature environment;
2. It is used for gas distribution and liquid bed orifice plate material;
3. Used for high-precision, high-reliability high-temperature filter materials;
4. For the high pressure backwashing oil filter edit the application example of this paragraph;
5. Precision filtration of various hydraulic oil lubricating oils in the machinery industry;
6. Filtration and purification of various polymer melts in the chemical fiber film industry;
7. Various high temperature and corrosive liquid filtration in the petrochemical industry, filtration, washing and drying of materials in the pharmaceutical industry;
8. Application of gas homogenization in powder industry, fluidized plate in steel industry;
9. Buzzer in explosion-proof electrical appliances, etc.
Problems that are easy to appear in the use of sintered filter
1. The selection of sintered filter element is inappropriate.
When the filter element is selected, if the selected filter element is not suitable for the current working environment, the filter element precision is too high, and the pressure exceeds its allowable working pressure, it will cause the filter element to be flattened.
2. Improper installation of sintered filter element.
The installation of the filter element should be accurate and stable, and if the filter element is not fixed, the filtration work has already started, which will cause the filter element to be damaged.
3. The sintered filter element is blocked and not replaced in time.
The filter element is seriously blocked by pollutants during work and has not been cleaned in time, resulting in an increase in the pressure difference of the filter element, and insufficient strength of the filter element, which causes the filter element to be flattened.
Maintenance of sintered mesh filter
1. During the cleaning process, special attention should be paid to the cleaning of the sintered mesh filter, and do not deform or damage it, otherwise the filtration accuracy will be reduced and the production requirements will not be met.
2. If the filter element is found to be deformed or damaged, replace it immediately.
3. The core component of the sintered mesh filter is the filter element, which is a fragile component and needs special protection.
4. When the sintered mesh filter works for a long time, it will intercept a large amount of impurities, which will reduce the working speed, so it should be cleaned frequently, and the filter element should be cleaned at the same time.
