Magnetic Filter Rod -

Magnetic Filter Rod

Your Trustful Magnetic Filter Bar Supplier

Since 1998, JiaDa has been a trusted manufacturer of industrial magnetic filter bars in China. As a leading and professional magnet factory, we specialize in producing high-quality magnetic filter tubes with varying surface Gauss levels, including 9000Gs, 12000Gs, 15000Gs, etc. Contact us today to request a free quote or learn more about our products.

Magnetic Filter Bar

Magnetic filter bars, also known as magnetic rods or tube magnet, are designed to efficiently remove fine iron contaminants from free-flowing materials like powders, granules, and liquids. Commonly used in industries such as food processing, pharmaceuticals, and chemicals, they help ensure product purity and protect equipment. These bars are available in various sizes and configurations, making them versatile for different filtration systems or standalone use.

Magnetic Filter Bars

Capture metallic particles in fluids, securing purity in manufacturing processes.

Magnetic Filter Tubes

To extract iron contaminants from product streams, enhancing processing efficiency.

Magnetic Filter Rods

To remove ferrous contaminants from materials in processing lines, ensuring product purity.

Magnetic Boiler Filter Rod

Removes magnetic and non-magnetic debris in boilers, improving heating system longevity.

Magnetic Filter Block

Separates ferromagnetic impurities, vital for product quality in various industrial applications.

Magnetic Filter Separator

Cleanses materials of ferrous substances, crucial for maintaining processing equipment integrity.

Round Filter Round

Detains metal pollutants in circular filters, essential for safeguarding manufacturing quality.

Magnetic Bar Separator

Intercepts metallic fragments in conveyors, critical for protecting machinery and final products.

Magnetic Filter Separator

Filters out magnetic particles, indispensable for contamination control in production lines.

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All You Need to Know About Bar Magnet

What Is A Magnetic Bar?

A magnetic bar is a cylindrical device composed of strong rare-earth neodymium /SmCo magnets enclosed within a waterproof stainless-steel housing. These bars are specifically designed to remove ferrous contaminants from materials in a wide range of applications, including powders, liquids, and bulk materials.

The bars consist of multiple magnets that create a magnetic circuit, doubling the strength of the magnetic field compared to a single magnet. This enhanced field allows the magnetic bar to effectively absorb and remove fine metal particles, down to 30 µm in size. The polished stainless-steel housing is durable and food-grade compliant, making magnetic bars suitable for industries that require stringent hygiene standards, like food and pharmaceuticals.

Magnetic bars can be placed directly into tanks or chutes or arranged in grids to form complete filtration systems. These versatile tools require no additional energy, as they rely on permanent magnets for their operation, ensuring efficient and cost-effective protection of both products and equipment.

Magnetic Filter Rod Construction

High-performance neodymium magnets are included in the magnetic filter rod, which is made of SUS304 or SUS316 pipe rods to suit your needs.

Bar Magnet Designs: Factors to Consider

Magnet Type	Working Temperature
Neodymium Magnets N Grade	≤80℃
Neodymium Magnets M Grade	≤100℃
Neodymium Magnets H Grade	≤120℃
Neodymium Magnets SH Grade	≤150℃
Neodymium Magnets UH Grade	≤200℃
Neodymium Magnets EH Grade	≤200℃
Neodymium Magnets TH Grade	≤230℃
Neodymium Magnets AH Grade	≤240℃
Samarium Cobalt Magnets	≤350℃

Technical Parameters:

Dia(mm)	6000Gs	7000Gs	8000Gs	10000Gs	11000Gs	12000Gs	13000Gs	14000Gs	15000Gs
⌀12	✓	✓	✓	-	-	-	-	-	-
⌀16	✓	✓	✓	✓	-	-	-	-	-
⌀19	✓	✓	✓	✓	✓	-	-	-	-
⌀20	✓	✓	✓	✓	✓	-	-	-	-
⌀22	✓	✓	✓	✓	✓	✓	-	-	-
⌀25	✓	✓	✓	✓	✓	✓	✓	✓	✓
⌀28	✓	✓	✓	✓	✓	✓	✓	-	-
⌀32	✓	✓	✓	✓	✓	✓	✓	-	-
⌀38	✓	✓	✓	✓	✓	✓	✓	-	-
⌀50	✓	✓	✓	✓	✓	✓	✓	✓	✓
⌀63	✓	✓	✓	✓	✓	✓	✓	✓	✓
⌀100	✓	✓	✓	✓	✓	✓	✓	-	-

Note:

The relationship between common size and corresponding maximum surface gauss.
Special sizes and magnetic strength available upon request.

How To Choose the Surface Gauss of Magnetic Bar?

Bar systems filter small amounts of very fine iron and weakly magnetic particles from 30 µm up to approx. 2 mm out of fine powders, liquids and viscous products present in bulk flows and pipeline transport in various industries. The recommended magnetic intensity for different flow are as below:

Dry Powder: 7000-8000 gauss
Slurry: 9000-10000 gauss
Nanoparticles: 12000 gauss and above

How to Measure the Surface Gauss of Tube Magnets?

The strength check of the magnetic bar normally uses a Gauss meter to check the strength of the magnetic bar and keep the corresponding records.

Benefits of Magnetic Bar

Easy to clean

Simple to use

Removes micron sized contaminants

Often the Most Cost-effective Option

Manufacturing Process of Magnetic Rods

The manufacturing process of magnetic rods involves precision and attention to detail to ensure the highest quality and performance. Here is an outline of the typical production flow:

SS Tube Cutting

The process begins with the cutting of the stainless steel tube to the required length, ensuring a perfect fit for the magnets.

SS Tube Polishing

Once cut, the stainless steel tubes undergo a thorough polishing process to achieve a smooth surface, which is essential for the next steps.

Magnets Assembling

High-powered magnets are carefully assembled within the stainless steel tube. The precision of this step is crucial for the final magnetic field distribution.

Endplug Welding

After the magnets are in place, end plugs are welded onto each end of the tube to encase the magnets, preventing any movement.

Endplugs Rough Polishing

The welded end plugs receive a rough polishing to remove any excess material and prepare the surface for finer work.

Endplugs Fine Polishing

A second, finer polishing gives the end plugs a smooth finish, ensuring there are no imperfections that could affect the magnetic rod’s performance.

Bar Fine Polishing

The entire bar, now assembled and welded, is finely polished. This not only improves aesthetics but also removes any microscopic irregularities.

Inspecting Sand Holes

A meticulous inspection follows, looking for any sand holes or imperfections that could have arisen during welding or polishing.

Repolishing

If any imperfections are found, the affected area is repolished until the desired quality is achieved.

Surface Gauss Measurement

The magnetic strength of the rod is measured to ensure it meets the required specifications.

Packaging

Finally, the magnetic rods are carefully packed and prepared for delivery to the client.

Shipment

After the magnets are in place, end plugs are welded onto each end of the tube to encase the magnets, preventing any movement.

Industry Applications

Magnetic filter rods are crucial across a spectrum of industries including food processing, pharmaceuticals, chemicals, and recycling, among others. Their role is pivotal in enhancing the purity and quality of products by efficiently removing magnetic contaminants.

Food

Cocoa & chocolate
Dairy & milk powder
Grain, seeds, soya, rice & corn
Sauces, pastes & meat
Spices, herbs, coffee, tea & nuts
Starch & flour
Sugar, sweets & confectionary

Non-food

Lithium battery powder
Cattle & animal feeds
Ceramics/minerals/salt
Chemical and plastics
Pharmaceutical
Coatings & industrial liquids
Paper, fibres and textiles

Recycling

Ash & Slag
Plastic & rubber
Glass & ceramics
Scrap

Frequently Asked Questions

How To Clean the Bar Magnet?

Depending on the configuration, rod magnets can be cleaned in seconds by simply pushing the attracted contamination to one end, this will release it enabling further analysis to be conducted.

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