Trusted Distributor of Sintered Metal Filter in China

The sintered metal filter is a type of filter that has experienced the sintering process.

Primarily, the sintering is a metallurgy technique used on the filter and the interaction of different alloys and metal fibers in granulated form.

Moreover, the primary mechanism of metallurgy is carried out by a diffusion process of metal powder at temperatures lesser than their melting points.

The alloys suitable for this procedure mainly include copper, aluminum, nickel, bronze, titanium, and stainless steel.

However, many other methods and techniques are efficient for this process.

Typically, atomization, chemical decomposition, and grinding methods are used for sintering filters.

Furthermore, the porous filter possesses beneficial corrosion resistance, excellent filtration efficiency, and high-temperature applications.

Figure 1 Sintered Metal Filters

It is necessary to read the manufacturer’s manual to follow the basic steps in cleaning a sintered filter.

1.   Heating

However, the most efficient cleaning method for the sintered metal filter is an ultrasonic cleaning process.

Start by placing a sintered metal filter in a nitrogen protection boiler and raising the temperature to 380°C.

Once it starts boiling, let it remain in the same position for approximately two hours.

2.   Action Under Ultrasonic Machine

After that, place the filter in an ultrasonic machine and leave it there for another 30 minutes.

3.   Backwashing

Even though the filter is heated up to remove the dirt, it is still essential to clean the porous part thoroughly.

Keep the filter under a continuous flow of liquid to ensure no dirt remains in the pores to avoid any chance of contamination.

To that end, pour the liquid with pressure from the opposite direction to ensure no solid remains in it, and the process is known as ‘Backwashing.’

However, if contaminants persist on the surface of the filter, dip it in the fluid for more time.

4.   Vacuum

If there is resistance from solid contaminants, it is clever to vacuum the filter to get rid of them.

Furthermore, keep the essential precautions in mind while cleaning a filter as it shouldn’t disintegrate or break during the process.

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Sizes of sintered metal filters available in the market are made according to the buyer’s requirements or need of an application.

Typically, sintered filters are manufactured as small as pinhead size or larger depending on the manufacturing details.

Generally, the largest size of the sintered filter is similar to the dimensions of a 5-gallon bucket.

However, it is possible to increase the size of the filter to about a 55-gallon drum.

Mainly, the sintered filters are manufactured in cylindrical shapes, although they can be cut from sheets to various conditions and thicknesses.

Figure 2 Sintered Metal Filters Sizes

The applications of sintered metal filters are extensively distributed in the industry. Amongst many, some of them are discussed below:

1.   Petroleum Industry

In petroleum refining processes, sintered metal filters are used to filter fuel more accurately.

Typically, this filter helps achieve the desired filtration results while maintaining specific fuel degree levels.

The main reason for using the sintered filter for the process is its non-reactive, non-contaminative nature and efficiency at elevated temperatures.

2.   Chemical Industry

In the chemical processing industry, sintered metal filters are helpful in the manufacturing of nuclear power plants.

Due to their high resistance in a corrosive environment, temperature range shock resistance, and non-reactive properties are advantageous in many chemical factories.

3.   Gas Generation

The sintered metal filters are helpful in the production of several gases due to their minimum to no reaction property and equal efficiency in different conditions.

4.   Food Industry

The sintered metal filters strain natural juices and extracts in the food and beverage industries.

Typically, this filter prevents the essential nutrients from escaping, producing fresh and pure extracts.

5.   Power Production

The working atmosphere in power turbines requires continuous movement and circulation of turbines.

To that end, this process needs constant filtration to protect the turbine from contamination that can lead to interruption in power generation.

Additionally, these filters are installed with the turbine to protect them from contamination.

Due to its anti-corrosion property, the service life of filters is high that benefits the efficiency of turbines.

Figure 3 Sintered Metal Filters Applications

The material choices for sintered metal filters depend on the conditions and criteria where the filter has to be used.

Commonly, the following materials are more frequently used for the process:

1.   Bronze

Among all, bronze is at the top of the list for sintered metal filters due to their excellent strength, excellent corrosion resistance, and applications at elevated temperatures.

2.   Stainless Steel

Another popular material used for sintered metal filters is Stainless Steel.

Since it is available in many grades and alloys, the most beneficial one is 316L with exceptional corrosion and heat resistance properties.

3.   Other Options

Many other alloys and elements might be used for sintered metal filters depending on how harsh are weather conditions are and the chemical around the filter.

Typically, nickel alloys are preferable for these tasks. However, Monel, Inconel, Hastelloy are also included in the choices.

The main specification of sintered metal filters are as follows:

1.   Micron Rating

The basic specification that comes into consideration is the micron rating, i.e., the pore size of the sintered filter.

2.   Thickness

Another necessary factor for the sintered metal filter is the thickness. The higher the thickness, the highly efficient the outcome will be.

3.   Diameter

The inner and outer diameter of the sintered filter identifies the entire size of the filter. It is necessary to determine the applications where they should be used.

4.   Temperature Resistance

While choosing the right sintered metal filter, consider its temperature resistance properties to ensure whether or not it will work in the desired environment.

5.   Length

The length of the filter is essential to make sure it fits in the required space. Usually, the manufacturers produce customized sizes to work accurately in applications.

The composition of the sintered filter varies according to the raw material used in manufacturing.

The preferable elements are bronze, stainless steel, nickel-based alloys, titanium, nickel filters, and specified powdered alloyed or stainless steel fiber belts.

Moreover, many efficient and leading manufacturers like SHENGYE offer self-supporting filter structures with enhanced mechanical strength.

Usually, a seamless outcome is made with a length of 1,600mm and an Outside Diameter of 320mm.

Suppliers manufacture porous filters with customized pore sizes and flow rates to fulfil the client’s requirements to fit the applications.

The sintered metal filter’s working principle is a two-dimensional mechanism with two end products:

1. The collection of contaminants at the surface of the porous filter.
2. Refined and clear liquid leaving the filter.

Before starting an operation, ensure the following factors:

1. Backwash capability.
2. Pressure dropping
3. Retention of contaminants.

The metal powder filter is a closed-end tubular filter element that has defined pressure drop to make sure it reaches a final point. It also depends on the constant flow of fluid.

However, the continuous and uninterrupted liquid flow depends on the fluid’s viscosity, speed, and particle sizes.

Consequently, backwashing is carried out by opening the backwash discharge and pressurizing it to produce equal pressure as the forward one.

Furthermore, forward and backward washing’s combined effect removes the fluid’s contaminants and sends them out of the filter.

Moreover, the pressure drop and temperature fluctuation may also affect the fluids’ viscosity and outcomes.

Therefore, the proper maintenance of all the factors is essential while using sintered metal filters:

Figure 4 Sintered Metal Filter Working Principle

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When sintered metal filters contact acidic materials, they are more likely to produce efficient results.

Furthermore, the sintered metal filters are helpful in various industrial applications due to their high strength, longevity, efficiency, and cleanability.

Due to their enhanced mechanical properties, they are helpful in methods such as carbonation, gas injection techniques, and CO₂ injection processes.

Moreover, the metal fiber filters and metal filter discs are susceptible to various acid-based processes such as bleaching, hydrogenation, and other post-bleaching operations.

These procedures generate reliable outcomes in many industries, including food and beverage industries and chemical industries.

Types of chemicals that move through sintered metal filters without harming the filter body are briefly discussed below:

1.   Non-Corrosive Chemicals

The primary factor that damages the efficiency and quality of the filter body is corrosion.

Therefore, the chemicals that pass through the sintered filter must be anti-corrosive to avoid failure in the filter body.

Not only will corrosion compromise the efficiency, but also it will contaminate the metal ions in the pores resulting in a significant defect in the filter body.

2.   No Surface Absorption

Moreover, the media or fluid passing through a sintered filter must have minimum to no surface absorption on the filter element surface.

It may cause some catalytic activity on the surface leading to a detrimental loss on the results.

3.   Filter Blockage

The liquids or chemicals used for the filtration should be less than the pore size to avoid blockage in the filter.

Consequently, the larger size will cause occlusion in the filter and restrict fluid flow, thereby disrupting the efficiency of porous metal filters.

A possibility for one of these sintered metal filters to melt due to intense heat is minimum to low as they are chosen for sintered filters because of heat resistance.

Sintered filters are mainly used in various gas filters for petrochemical operations, chemical reactions, and power industries.

Consequently, many alloys can bear intense heat and perform effectively at elevated temperatures.

However, successful and leading manufacturers such as SHENGYE are experimenting with manufacturing filters resistant to highly acidic environments.

Moreover, this depth filter has a robust design and working mechanism to help handle pressure loads and temperature shocks.

Furthermore, the sintered metal filters’ can withstand harsh and challenging temperature conditions due to their intrinsic design and toughness.

A mesh laminate is featured on some sintered metal filters. They are used for highly efficient and reliable outcomes.

Primarily, laminate is permanently bonded with the existing wires with a diffusion-bonding technique.

Compared with the traditional filter cartridges, the filter metal with the laminate provides more strength and resistance to the porous material.

Moreover, the laminate is widely constructed with filter material due to its additional benefits, such as high stability, reliable performance and mechanical abilities.

Furthermore, the laminate can be bonded to the filter in two ways:

1. Single-Layer Sintered Wire Mesh Filter
2. Multi-Layers Sintered Wire Mesh Filter

Consequently, many industries, including SHENGYE, manufacture customized Mesh laminate sintered metal filters to fulfil their customers’ needs.

Figure 5 Sintered Metal Filter Laminate

Some of the design considerations for sintered metal filters are discussed below:

1.   Porous Size

The pore size in sintered metal filters is called Micron Rating and defines which particle size is meant to be filtered from the filter paper.

For instance, if the pore size is about 5 microns, 99% of the particles will be kept over the filter with more than 5 microns.

2.   Strength

Another important aspect of using a sintered metal filter surface is that they possess the same strength and efficiency for forward and reverse flow.

3.   Temperature Gradient

Depending on the temperature conditions, it is necessary to choose the material of the sintered filter.

Essentially, the material of the filter must be able to resist diffusion in the temperature of the target liquid to be filtered.

4.   Pressure

While passing a liquid through a filter layer, keep an eye on the allowable pressure drop.

Furthermore, different filter materials consist of variable pressure resistance capabilities that the manufacturers must mention.

Figure 6 Sintered Metal Filter Design Considerations

Yes, sintered metal filters are used with multiple oils with equal efficiency, strength, and stable outcomes.

Moreover, many oils are filtered from various filter types to achieve long-term catalyst services.

Furthermore, these sintered filters help prohibit the contamination of the catalyst downstream.

The sintered metal filters enhance productivity, stability and limit the tear and wear of equipment.

Additionally, the sintered metal filters are utilized for oil processing, cleaning oil, backflushing oil, and oil refining processes.

Choose SHENGYE sintered metal filters for long-lasting, durable, and cost-effective services.

With over 20 years of experience in the sintered metal filter industry and manufacturing filter units of numerous models, the company is committed to serving its clients with the best.

Moreover, they are serving various industries with porous substances to boost the productivity and efficiency of their products.

SHENGYE is offering services to the following industries:

1.   Automobile Industry

Shengye manufactures porous parts for the auto industry to withstand higher engine temperatures.

Moreover, these filter vessels protect the sensitive engines from contamination and harmful effects.

2.   Medical Industry

Shengye efficiently works to develop successful filtration procedures in the medical industry.

Mainly they manufacture components a wide range for laparoscopic surgery and other metal fibre filters for other delicate medical devices.

3.   Chemical Industry

Primarily, Shengye is associated with the chemical industries to produce effective metal filter products to ensure effective filtration at elevated temperatures.

Even they produce various chemical alloys to fit the different criteria of the cleaning and maintenance procedures.

4.   Boilers

Shengye produces sintered metal filters for effective surface filtration operations and vessels for bioprocessing, product consistency, and purity.

Due to multiple manufacturing and economic reasons, ordering just one or two sintered metal filters from China is not possible.

However, many clients wish to order single or double sintered metal filter pieces to analyze the quality of the product.

Unfortunately, it is not feasible practically with smaller-sized sintered filters, even though many manufacturers in China prefer minimum order of 100 pieces to deliver to you.

Because of economic reasons, as with customized setting up costly die equipment, suppliers have to charge extra to clients to produce a handful of filters.

Moreover, if a client is willing to pay a handsome amount for the minimum quantity of product, then manufacturers accommodate their orders.

Filter materials used for a sintered metal filter have significant differences and advantages depending on the conditions and types of usage.

Some of the materials are briefly discussed as follows:

1.   Stainless Steel

Grade 316 stainless steel is a standard metal extensively used in sintered filters across industries for its exceptional corrosion resistance properties.

Furthermore, the stainless steel filter is reliable and provide a consistently high-performance filtration process.

Commercially, the stainless steel grade 316 is used in the following applications:

1. Water Treatments.
2. Chemical and Petroleum Industry.
3. Accurate Filtration Processes.
4. Power Productions.
5. Ozone Filtrations.
6. Water Generations.

Figure 7 Stainless Steel Sintered Metal Filter

2.   Bronze

Bronze is frequently used in sintered metal filters due to its enhanced durability and efficiency in various filtration modes.

Consequently, the bronze is famous for its resistance against high-pressure exertion and resistance against frigid temperatures.

Other advantages of using bronze are:

1. It is relatively cheaper than other metals.
2. It can be readily customized to meet the requirements.
3. Easy maintenance and cleaning procedures.
4. The metal particles in the bronze filter consist of high dust removing capacity with improved filtration outcomes.
5. Able to withstand high pressures.
6. Technically, they produce the same efficiency when there’s a pressure loss.

3.   Titanium

Due to the highest resistance against oxidation and harsh chemicals (acids and bases), titanium is widely used in sintered metal filters porous sheets.

Moreover, titanium filtration units have a large pore size and strong bonding of particles, making them eligible for filtrating relatively larger particles.

Typically, the advantages of using titanium are as follows:

1. It consists of a stable and uniform shape and size.
2. It can produce a highly efficient filtration layer with increased dirty holding capacity.
3. Titanium can withstand temperatures up to 300° and can resist thermal shock.
4. It doesn’t allow the interference of external particles, i.e., minimum secondary pollution, and can operate in extreme environments.
5. With excellent mechanical strength, titanium liquid filtration is easy to operate.
6. It comprises a longer life span with differential pressure and pumping filtrations support.

A sintered metal filter continues to work even when the conditions are freezing as far as the filter is adequately back washed and cleaned.

Furthermore, most of the sintered metal filters are manufactured with the properties of cold isostatic processing for large pore sizes.

Cold Isostatic Processing (CIP) is a technique in which a powdered substance is subjected to the filter from all directions.

Commonly, the process is utilized for large-sized parts and doesn’t require high precision in sintered position.

However, the sintered filters with CIP are more stable and display more efficiency under freezing conditions.

The MOQ for SHENGYE sintered metal filters is about 50 to 100 pieces of sintered metal filters.

Typically, there is no standard maintained for the determination of MOQ; manufacturers decide it independently.

Some factors are considered to calculate the MOQ for the business:

1. Whether or not the order is worth forecasting.
2. Strategies to plan the order.
3. Identifying the discounts on higher volumes.
4. Other inventory prices.

To figure out the total surface area of a sintered metal filter, accuracy in the measurement plays a vital role.

Essentially, measure the filter’s average pore size and specific surface (SS) with a particular measurement device.

After that, calculate the percentages for each of them for further evaluation of the total surface area of the sintered metal filter.

Consequently, the sum of both (SS and Porosity) percentages must be 100%.

For example, if the pore size is about 27%, the SS must be equivalent to 73% to make it 100%.

Therefore, it can be estimated that the total surface area of the sintered filter is a sum of the length and perimeter of the filter.

Figure 8 Sintered Metal Filter Total Surface Area

Yes, you can customize sintered metal filters when ordering from BLUE. They are always dedicated and keen on producing the required products.

With years of experience in the filtration industry, BLUE is working hard day and night to produce custom services for its consumers.

Furthermore, the combination of advanced techniques and modern technology has made them capable of producing all kinds of products.

Whether a client acquires a complex item, they always manage and develop innovative strategies to ensure they get what they want.

Moreover, the company can efficiently obtain the following customized parts to fit the desired specifications of consumers and applications:

1. Mounting Style.
2. Pressure Drop.
3. System Pressure.
4. Flow Rate.

Figure 9 Customized Sintered Metal Filters

You can not buy a standard sintered metal filter off the shelf from China as there are no standard sizes for sintered filters.

Typically, all the shapes and sizes made for the sintered filters are customized and accurately manufactured for a specific application.

Coincidentally, one sintered metal filter might fit into another one, but usually, all sintered filters are of different sizes.

However, many manufacturers offer custom-made sintered filters in various shapes and sizes according to the needs of consumers.

Technically, the sintered metal construction of filters is based on the range of micron ratings.

Many sintered metal filters are available in China concerning the specifications and applications.

Primarily, the sintered metal filters are available in the following shapes:

1. Polygon.
2. Circle.
3. Square.
4. Rectangle.
5. Triangle.

Moreover, all the shapes of sintered metal filters are available with Micron ratings ranging from 1-200.

Additionally, the micron ratings identify the pore size and, ultimately, the efficiency and credibility of the sintered filter.

Figure 10 Sintered Metal Filter Shapes

The features of sintered metal filters are described below:

1. The sintered metal filters are known for their excellent resistance to corrosion and fantastic durability.
2. Additionally, these filters are adequate for the backwashing mechanism, thereby having a prolonged lifespan.
3. Moreover, the filters are capable of large dirt holding capacity without affecting their efficiency.
4. Technically, the sintered filters are made up of high-performance quality material.
5. Furthermore, the filters possess high mechanical tolerance and pressure strength.
6. They promote various filtration grades ranging from 0.1microns to 100 microns with extensive effectiveness.
7. Due to porous stability, the filters can persist in their shapes with guaranteed permeability.
8. The temperature gradient for sintered metal filters is high, starting from -200°C to 1000 degrees celsius.

Figure 11  Sintered Metal Filters Features

Information you need to provide to the Chinese sintered metal filter manufacturer to place an order are mentioned below:

1. In what application do you need to use the sintered filters? For instance, fluidization, gas dispersion, liquid or gas extraction, etc.
2. Explain to the manufacturer about the material passing through the filter and the sizes of the filter pores.
3. Discuss the corrosive properties of the fluid.
4. Consider the conditions of the working atmosphere, including temperature, pressure, etc.
5. Also, look for the potential contaminants during the process of filtration.
6. Moreover, it is necessary to mention the materials’ shape, size, and tolerance.
7. Additionally, brief the supplier about the quantity of your order.
8. Furthermore, explain to the manufacturer how the mounting of the equipment will take place.
9. Consequently, don’t mention the pressure drop and flow rate across the sintered metal filter.
10. Lastly, describe the manufacturer about your required system pressure.