Sintered Wire Mesh Filters - Manufacturer＆Supplier

What are Sintered Wire Mesh Filters?

Sintered wire mesh filters are special types of filters made by sintering woven wire mesh. This process combines layers of woven wire mesh into a single unit with increased mechanical strength, enhanced filtration efficiency, and stable pore structures.

Porous Metal Filters - Filson

Your Professional Supplier of Porous Metal Filters in China

Filson porous metal filters are crafted from metal powder with diverse particle sizes to meet various permeability requirements. Common materials include stainless steel powder, bronze powder, titanium powder, and Inconel powder.

Filson commits to producing standard porous metal filters up to 3000mm in length without needing additional binders. Additionally, our expert engineering team can help design the most suitable end cap for your filter cartridge, tailored to your application.

Filson is your one-stop solution for porous metal filters. Contact us for more product details or quotes at sales@filsonfilters.com or call +86 157 3695 8886 now!

Porous Metal Filters: The Ultimate FAQ Guide

Before buying porous metal filters, read this guide. It includes all the information you're looking for about porous metal filters, such as materials, properties, manufacturing process, classification, applications, and quality standards, among other details.

If you want to learn more about porous metal filters, this guide is precisely what you need.

What are Porous Metal Filters?

Porous metal filters are specialized filters made from sintered metal and high-quality woven wire cloth products used for filtering purposes.

What are the Uses of Porous Metal Filters?

Porous metal filters are versatile and used in various functions depending on their type. Here are some primary uses:

Fluid Filtration

These filters are effective in filtering gases and liquids, capable of retaining solid particles and separating solid, liquid, or gas phases based on molecular weight criteria.

Pressure Fall

The porosity of these filters helps reduce the pressure of the fluid flowing through them, reducing the sound of pressurized gases and protecting electrical and hydraulic equipment.

Flow Control

They assist in controlling fluid flow, achieving a constant fluid flow at the exit, especially in situations where the fluid is generated through capillarity, allowing precise control of output flows under high pressure.

Fluidization of Air

Porous metal filters help control pressure through various exit points, promoting gasification and aeration, and manipulating powder solids through fluidization.

Anti-humidity Functions

These filters can retain and condense moisture in passing gas, protecting devices against corrosion by keeping them dry and free of corrosion agents.

Flame Anti-Return

Filters can be placed in front of a flame to prevent it from receding, supporting products like gas boilers, welding facilities, and heaters.

Which Raw Materials Are Used for Making Porous Metal Filters?

The choice of raw materials influences the performance and efficiency of porous metal filters. Common metal alloys used include bronze, stainless steel, nickel, titanium, and special stainless-steel or powder fiber felts.

Properties of Raw Materials for Porous Metal Fibers

When choosing raw materials, consider the following properties:

Self-Stability Properties

These metal alloys provide high mechanical strength and self-supporting structures, maintaining proper strength and support in a definite shape, supporting seamless layouts up to 1600 mm in length and 320 mm OD.

High Corrosion Resistance

The raw materials are corrosion-resistant, stainless, and easy to clean, preventing rusting.

Thermal Stability

The materials should maintain stability at temperatures up to 950 degrees centigrade.

High Permeability Levels

The materials allow specific fluids to pass through while reducing system pressure.

Proper Pore Size Distribution

Pore size distribution is crucial for filtration rate, defining filtration through proper pore size determination.

Possible Machining and Welding

Porous metal filters should be capable of machining and welding, easing fabrication processes.

What is Sintering in Porous Metal Filters?

Sintering is a fundamental process in producing porous metal filters where different metal products are bonded through the fusion of temperatures lower than the melting point, forming rigid parts by interlinking separate grain structures.

Significance of AS Coating in Porous Metal Filters

AS coating is a sintered layer that increases permeability and lowers pressure drop. A layer of fine metal powder applied to a cartridge acts as a support structure.

Customization of Porous Metal Filters

Customization involves designing filters based on application specifications, selecting materials, dictating properties like fatigue strength and corrosion resistance, and finalizing dimensions before sintering the materials to create filters that meet application requirements.

Benefits of Using Porous Metal Filters

Using porous metal filters provides several benefits:

High Mechanical and Pressure Tolerance

These filters are strong with high mechanical and pressure tolerance.

High Particle Retention Range

The filters can retain particles sized between 5 to 200 microns.

Corrosion Resistance

They offer corrosion-free filtering processes, preventing reactions that could affect filtration.

High Pressure Drop

The filters can reduce fluid pressure effectively, lowering noise and evenly distributing flow.

Great Thermal Shock

The filters handle high thermal shocks, suitable for applications with significant thermal changes.

Pressure and Temperature Resistance

Manufactured to withstand high pressure and temperatures, making them ideal for demanding applications.

Components of Porous Metal Filters

Porous metal filters consist of several key components working together:

Filter Housing

The outer part housing all components for protection.

Inlet and Outlet Units

The inlet introduces fluid to be filtered, while the outlet releases the cleaned fluid. A flushing outlet may also be included.

Filtration Unit

Utilized for filtering or blocking solid particles, retaining solids of different sizes.

Cleaning Indicator

An indicator that signals different cleaning stages through various colors.

Reciprocating Flush Nozzles

Used for reciprocating flushing of fluids, alternating different types before releasing them.

Manufacturing Process of Porous Metal Filters

Manufacturing porous metal filters involves a three-step sintering process:

1. Obtaining Raw Materials

Collect raw materials in powder form, using methods like atomizing, grinding, or chemical decomposition. Mixing metals to create alloys may also be required.

2. Shaping the Design

The powder is poured into a die at high pressure, compacting the powders into a solid block.

3. Heating the Solid Block

The block is heated to fuse the metal powders without melting, forming porous, rigid, and strong filters capable of fluid filtration.

Classification of Porous Metal Filters

Porous metal filters are classified by material type:

• Sintered brass filters
• Sintered bronze filters
• Sintered stainless-steel filters
• Sintered copper filters
• Sintered nickel filters
• Sintered titanium filters

Configurations of Porous Metal Filters

Configurations vary depending on applications, with filtration accuracy ranging from 0.2 to 1000 microns. Configurations are customized based on specific application needs.

Operation of Porous Metal Filters

Porous metal filters operate by blocking contaminants during fluid flow. Here's the basic process:

Fluid flows into the filter, containing solid contaminants. As it passes through the porous metal filter, only the fluid (gas or liquid) passes through the small pores. Solid contaminants are blocked, separating from the fluid. The clean fluid then exits from the filter outlet.

Cleaning Porous Metal Filters

Various methods are used to clean porous metal filters:

Blowback for Gas Applications

Used for cleaning filters involved in gas filtration.

Backflush for Liquid Applications

Employed for cleaning filters used in liquid filtration.

Ultrasonic Cleaning Process

An automatic cleaning method for efficient cleaning of porous metal filters.

Considerations When Choosing Porous Metal Filters

Key factors to look for include:

Contamination Retention

Choose filters with high contamination retention for better filtration rates.

Backwash Ability

Look for filters with effective backwash capabilities for thorough cleaning.

Pressure Drop

Select filters with optimal pressure drop properties for enhanced performance and efficiency.

Comparison Between Porous and Pleated Metal Filters

There are two main types of sintered metal filters:

Porous Metal Filters

These filters have pores for filtration, offering high tolerance and mechanical properties. They are used in applications below 80 degrees centigrade.

Pleated Metal Filters

Pleated filters use pleats for filtration, providing a larger surface area than porous filters, resulting in higher filtration rates.

Applications of Porous Metal Filters

Porous metal filters have diverse applications:

Chemical Processing Industry

Used to filter fluids in the chemical industry, including nuclear manufacturing.

Petroleum Refining Industry

Used to refine and clean petroleum, separating different petroleum products.

Cost of Porous Metal Filters

The cost varies based on quality, size, and type of porous metal filters. For instance, copper filters are more expensive than brass filters. Prices range from $50 to $1000.

Mechanical Properties of Porous Metal Filters

Consider enhancing the following properties:

Strength

Evaluate the strength in terms of density and properties.

Shape

Consider the space and manufacturing method when determining the filter’s shape.

Increasing Efficiency of Porous Metal Filters

To optimize filter functions and increase efficiency:

Proper Record Keeping

Maintain daily operation records to identify and fix any faults in the filtration process.

Proper Maintenance Procedures

Follow a maintenance schedule to remove debris and ensure the filter remains efficient.

Regular Part Replacements

Replace clogged filters regularly to maintain working efficiency.

Optimizing Filtration Settings

Work with professionals to adjust settings, ensuring optimum performance.

Limitations of Porous Metal Filters

While beneficial, these filters have specific limitations:

High Cost of Raw Materials

Metal raw materials like bronze and copper are costly, increasing filter expenses.

Special Atmospheric Conditions

Filters may need adjustments as they don't perform well in specific atmospheric conditions.

Complexity in Producing Large Parts

Producing larger filter parts can be challenging and problematic during sintering.

Quality Standards for Sintered Metal Filter Elements

Ensure filters meet high-quality certifications:

• UL Quality Certifications
• CE Quality Certifications
• RoHS Quality Certifications
• Telcordia Quality Certifications
• REACH Quality Certifications

Comparison Between Sintered Bronze and Stainless Steel Filters

The primary difference is in the material composition:

Sintered Bronze Filters: Made by compressing bronze metals, they are soft and may deform.

Sintered Stainless-Steel Filters: Made by compressing stainless steel powders, they are tough, resistant to deformation, and maintain properties even under chemical exposure.

Comparison Between Sintered Copper and Brass Filters

Sintered Copper Filters: Made from copper, offers better heat conduction but are more expensive.

Sintered Brass Filters: Made from brass, are a cheaper option but don't perform as well as copper filters.

Why Import Porous Metal Filters from China?

Considering importing from China due to several advantages:

• China is the largest manufacturer, offering a wide range of filters to meet application requirements.
• High-quality, durable filters that eliminate filtration downtime.
• Efficient business operations supported by advanced infrastructure, reliable shipping channels, and competitive pricing.

At FilSon Filters, we design and manufacture metal filters tailored to your specifications. Contact us now for the best prices on porous metal filters.