DIY: Build Your Own Magnetic Aquarium cleaner

What is aquarium magnet?

Permanent magnet can be used in aquarium to hold items like water jets, cleaners and coral flags. Due to the work environment, plastic coated magnet is often chosen in the aquarium as waterproofing. In aquarium tank, rare earth magnet can be used as the closure of aquarium cabinet and also as the insert of floating, pads or cleaners.

Neodymium Rare Earth Magnet is the strongest magnet in the world. Based on different thickness and material of aquarium tanks, not only the magnet size but also the magnet grade should be chosen carefully to make sure aquarium magnetic items the finest, safest and most cost-effective.

N35 is the lowest grade for sintered neodymium magnet; if you need stronger magnetic force with the same size, you can use higher grade, such as N38. Low-cost coating like Zn or NiCuNi is enough for Sintered NdFeB magnet in the aquarium if you used magnet in a seal product.

Ceramic magnet can be used in water and no need for any coating. The weakness is weak magnetic force. In order to avoid this problem, you can use a ceramic (ferrite) magnet on the inside of aquarium wall and a stronger sintered neodymium magnet on the outside of aquarium wall.
China Magnets Source Material Ltd makes all types, grades and sizes of permanent magnet for aquarium application. Contact us at sales@china-magnets-source-material.com if you have any demand.

DIY: Build Your Own Magnetic Aquarium cleaner
By easy fresh ideas

In a fish tank or aquarium tank, no matter what size, it’s inconvenient to empty the tank before cleaning them. With a magnetic aquarium cleaner, you can easily solve the clean problems caused by narrow shape vases and water.

Materials: 2 pieces strong neodymium magnets, different sponge
Tools: knife, scissor, sewing kit

Steps:
1. Cut the sponge by scissor and make them a little bigger than the magnet.
2. Cut a slot in one side of sponge by a sharp knife.
3. Insert magnet into the sponge.
4. Sew the opening to hold magnet in place.
5. Repeat step 1-4 to make another one.
6. Place a magnetic cleaner on the inside of aquarium wall and another on the outside of wall.
Remarks:
1. Pay attention to slide two magnetic cleaners carefully to attract each other.
2. Use a good substance to encase neodymium magnet, so it can be waterproof, such as plastidip or casting resin.

Rare Earth Magnet for Magnetic Drive Pump

Magnetic Drive Pump solved work under corrosive, inflammable, explosive, toxic, leakage, and clean liquid environment. Permanent magnet in the magnetic drive pump refers to coupling magnet. Magnetic drive pump makes full use of performance of magnetic force on ferrous material and non-ferrous material.

The first generation magnet on pump magnet is ferrite magnet. It’s cheap and wide source. Due to poor magnetic performance, it limits the development of magnetic drive pump. The second generation magnet is samarium cobalt magnet and AlNiCo magnet. These two materials are better than ferrite, and let magnetic drive pump achieve large torque. But their cost is very high because material samarium and cobalt which used in smco and alnico are rare and strategic resource. It also restricts pump development. The third generation Sintered NdFeB magnet with (BH)max 207 kJ/m³ to 422 kJ/m³ is an ideal material for magnetic drive pump. Sintered NdfeB magnet is the strongest magnet which can reduce the volume of pump and its material Fe and Nd is rich than samarium, so price is affordable. It helps magnetic drive pump get the market finally.

China Magnets Source Material Limited is able to manufacture different kinds of high performance magnets for magnetic drive pumps. You are welcome to contact us for more information. Our engineers also are ready to provide technical assistance.

Car Light Base Magnet

China-Magnets-Source-Material.com | Best Magnetic Solution

Permanent magnet can be the holder or mount or base to keep different lamps on any steel part of a car or a bike. It is ideal because you don’t need to make drill holes or marks when mount a light on the car. And you can take down the magnetic lamp easily.

Sintered NdFeB magnet and ferrite magnet are the two main types of permanent magnet material for light mount. Sintered NdFeB magnet is the strongest magnet in the world. Even with small size, it can attract bike light perfectly. When using ferrite for car lamp bases, it usually choose large ring magnet or pot magnet.

China Magnets Source Material Limited produce permanent magnet for light bar, LED light, bicycle lamp, car light, alarm lamp, taxi light, spotlights and signal lamp etc. You are welcome to contact us at any time when have such requirement. We also provide customized service.

Permanent Magnet for Motor

China-Magnets-Source-Material.com | Best Magnetic Solution

Permanent magnet for motor is one of important and high-end applications. In order to achieve optimal performance of PM motor, motor designers need to continually change their design and find best material for motor. Several factors will affect the choice of motor magnet.

1. Magnetic Material: Sintered NdFeB, Bonded NdFeB, Ferrite, SmCo, AlNiCo

• Sintered NdFeB magnet has high magnetic performance (including high magnetic flux, remanence, coercive force, resistance to magnetic demagnetization, and low temperature coefficient, loss of irreversible). It can improve motor performance and reduce the volume as well. It is main magnet material for PM motor.
• Bonded NdFeB magnet is well known for good plasticity. It suits for complex shape magnet or magnet with multipole magnetization direction. Usually, mould is needed for its production.
• Ferrite is an old magnet material which used on PM motor. It’s heavy weight but cheap price.
• SmCo can work under high working temperature. The magnetic force is weaker than Sintered NdFeB magnet, but also very powerful.
• AlNiCo with very high working temperature 450-550℃ is the oldest magnet material for motor and replace by ferrite later.

2. Magnet Max. Working Temperature: Sintered NdFeB magnet 150℃ (N35SH, N38SH, N42SH, N45SH), 180℃ (N35UH, N38UH, N40UH) , 200℃ (N35EH, N38EH); Sm2Co17 300℃

 

3. Magnet Working Environment: low weight loss (high corrosion resistance)

 

4. Magnet Coating: NiCuNi, Zn, Black epoxy, Grey epoxy etc. To make full use of magnet performance and control tolerance well, sometimes the plating of magnet uses phosphorization or passivated for temporary protection

 

5. Magnet Shape: segment (arc), wedge, bread, block, ring, or special shape

 

6. Magnetized direction: it depends on magnet design. In order to get best performance, magnetic declination can’t be ignored.

 

7. Magnet tolerance: a lot of motor magnets are made of segment magnets, and small tolerance is very important to reduce air gap and assemble a ring.



Segment NdFeB Magnet For Motor

China Magnets Soure Material Limited is rich in experience of motor magnet manufacture, such as magnet for flat brushless motor, DC Motor, AC motor, stepper motor , servo motor, synchronous motor; magnet for mini motor or special motor; magnet for high temperature to high humidity; magnet for regular shape or irregular shape.

You are welcome to contact us for more information. Our engineers also are ready to provide technical assistance.

The grade explanation for Sintered Neodymium Magnet by china-magnets-source-material.com

N: general coercive force Hcj ≥12Koe, for example: N40

M: medium coercive force Hcj ≥14Koe, for example: N48M

H: high coercive force Hcj ≥17Koe, for example: N45H

SH: very high coercive force Hcj ≥20Koe, for example: N42SH

 

UH: great high coercive force Hcj ≥25Koe, for example: N438UH

EH: super high coercive force Hcj ≥30Koe, for example: N35EH

 

AH: Top high coercive force Hcj ≥35Koe, for example: N28AH

T: high requirement for corrosion resistance, for example: N45T

L-T: low temperature coefficient and high requirement for corrosion resistance, for example: L-38SHT

PS: Figure represents the max energy product

Manufacturing Technique for Raw Material of Sintered Neodymium Magnet by china-magnets-source-material.com

• Smelting (ingot casting) – to smelt metal like Fe, Nd, B and others into a composition (magnet raw material)
• Fragmentation (hydrogen and mechanical disruption) – to crush ingot casting into particle 0.5-2mm
• Powder process by air-current mill – to grind smaller micron particles
• Compression moulding – to press powder into a certain shape
• Sintering, ageing – to sinter powder solid
• Performance test – to test magnetic property and magnet appearance

The production process of Sintered Neodymium Magnet by china-magnets-source-material.com

Raw material Production – based on customer’s requirement, to make property qualified material in a certain shape
Machining Process –based on customer’s drawing, to process raw material into final shape
Surface Treatment –based on customer’s requirement, to plate magnet to resist corrosion
Packing –based on customer’s requirement, pack magnet by special carton with six-side iron sheets for air transportation, normal carton for sea transportation

The characteristic of Sintered Neodymium Magnet by china-magnets-source-material.com

• the king of magnet with very high magnetic properties
• high coercive force
• can be processed into many shapes
• anisotropic material
• one energy saving solution for many objects using magnet
• get objects using magnet smaller
• lose much magnetic force with increase of working temperature
• high brittleness and difficult to process
• low anti-corrosion capability, coating needed

 

What is magnetic material? by china-magnets-source-material.com

Magnetic material is one of three fundamental functional materials in the industry. 

It was divided in two types based on magnetic properties: soft magnet and hard magnet (also named permanent magnet). Both are easy to get magnetized. The difference is: hard magnet can stay magnetized for long time with high coercive force; soft magnet has low coercive force, so lost its magnetic force easily.

Soft magnet: steel and iron, soft ferrite and high iron amorphous materials

Hard magnet: Sintered Neodymium Magnet, BondedNeodymium Magnet, AlNiCo, Samarium Cobalt Magnet, Ferrite (due to rare earth material content, they are also called rare earth magnets except ferrite)