If you need a mini four-wheel drive (4WD) to go faster, it is necessary to refit it. motor is the core part of 4WD, there are two ways to refit 4WD motor: The first is to use a better original motor to replace the existing one, which provides less room for upgrading; the second, which is the most common, is the change of internal coils and magnets, such as converting a copper coil to a silver alloy coil or using a thinner wire coil to increase the number of coil turns; meanwhile using stronger magnets to increase speed.
The impacts of magnet performance on motor performance:
The strength of the torque is an important measurement index of motor performance, and magnet is the most important component which determines the motor torque. For a rotor, the stronger magnetic force, the greater the torque is; and the idle speed will be correspondingly lower, but the speed did not slow. Permanent magnets can be divided into weak and strong, low and high working temperature, small and big size. In general: strong magnetic force, motor idle speed will be lower, but large torque, so it is more suitable for multi-ramp competition; however at the same time, it is also more electricity waste. While weak magnetic force, high idle speed motor, but torque would be smaller, it is more suitable for multi-straight sprint, and power saving.
Mini 4WD Motor Magnet Description:
1. Rare earth magnet size: R9.6xL13xW14xT2.5mm
2. Permanent magnet plating: zinc, nickel or epoxy
3. Magnetization direction: through diameter on pair
4. Motor magnet material: sintered ndfeb
5. Strong magnet grade: N42SH
5. Max. Magnet working temperature: 150 degrees Celsius
China Magnets Source Material Ltd is committed to serving you, our clients, with high quality motor magnet; contact us at sales@china-magnets-source-material.com to learn how we can help you optimize your magnetic dipole application.
2015年9月1日星期二
The Way to Separate Strong Magnets
Due to strong magnetic force among permanent magnets, how to merge and separate strong magnets is a big and serious problem while people working with them.
Sintered neodymium magnets, even with small sizes, have very strong magnetic force that will surprise you definitely. Permanent magnets belong to dangerous object; when you handle them:
1. You should get some magnet safety-danger tips.
2. Do some clean-ups in work place to keep iron items away
3. Prepare some tools like work glove, safety glasses and wood block, wood block is a good spacer for big strong magnets.
4. Although demagnetizer is a way to separate magnets. But it will lose magnetic force. So it is very important to know the principle of separating magnets as below picture:
Due to long shape of cylinder magnets to let you have area to grab, with the second method in the picture, you can separate two small cylinder magnets by hand. But for small thin disc magnets or other very big strong magnets, the first method is the right way. Here are the reasons:
1. Seek leverage from other object such as desk and/or find a better way to grab the magnets
2. Separate magnets apart parallel, which requires less force
There is a magnet separator tool designed by K&J Magnetics which fully taking advantage of above principle. And they also provide the method to Build Your Own Magnet Separator Tool.
To merge two big magnets, you need a block wood with sharp corner as below picture. Put big ring magnets each side of wood block, and then slide them to the side of sharp corner slowly. They will meet and grip each other at the end of corner. This is based on approach of Martin Dux from supermagnete
Sintered neodymium magnets, even with small sizes, have very strong magnetic force that will surprise you definitely. Permanent magnets belong to dangerous object; when you handle them:
1. You should get some magnet safety-danger tips.
2. Do some clean-ups in work place to keep iron items away
3. Prepare some tools like work glove, safety glasses and wood block, wood block is a good spacer for big strong magnets.
4. Although demagnetizer is a way to separate magnets. But it will lose magnetic force. So it is very important to know the principle of separating magnets as below picture:
Due to long shape of cylinder magnets to let you have area to grab, with the second method in the picture, you can separate two small cylinder magnets by hand. But for small thin disc magnets or other very big strong magnets, the first method is the right way. Here are the reasons:
1. Seek leverage from other object such as desk and/or find a better way to grab the magnets
2. Separate magnets apart parallel, which requires less force
There is a magnet separator tool designed by K&J Magnetics which fully taking advantage of above principle. And they also provide the method to Build Your Own Magnet Separator Tool.
To merge two big magnets, you need a block wood with sharp corner as below picture. Put big ring magnets each side of wood block, and then slide them to the side of sharp corner slowly. They will meet and grip each other at the end of corner. This is based on approach of Martin Dux from supermagnete
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.
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.
Can Rare Earth Magnets Work with Art Installations?
Permanent magnet is applied to many products including toy, speaker, sensor, jewelry, teaching, guitar, aquarium, electric tool, medical treatment and even motor in hybrid vehicles. One of major application in daily life is that neodymium magnets are often chosen as the mounting solution for use to hold everything from keys to clothes. Based on this, people in art museum begin considering hanging art objects with magnets.
Art installation or art conservation is a technical process that requires a lot of knowledge of the material for both art and mountings. Especially to hang textiles, linens or paintings, utilizing straight pins will destroy them. But with magnets, there will be no damaging. Now super-strong rare earth magnet is becoming a common tool to mount, store, and treat artifacts. Pot magnet with hook and small block or disc neodymium rare-earth magnets are often used here.
Forart quickly installed, saving time and money, China Magnets Source Material Ltdoffers high quality strong magnet for museum. Contact us to learn how we can help your magnet mounts.
Art installation or art conservation is a technical process that requires a lot of knowledge of the material for both art and mountings. Especially to hang textiles, linens or paintings, utilizing straight pins will destroy them. But with magnets, there will be no damaging. Now super-strong rare earth magnet is becoming a common tool to mount, store, and treat artifacts. Pot magnet with hook and small block or disc neodymium rare-earth magnets are often used here.
Forart quickly installed, saving time and money, China Magnets Source Material Ltdoffers high quality strong magnet for museum. Contact us to learn how we can help your magnet mounts.
2015年7月19日星期日
N55 high grade sintered ndfeb magnet
With more and more the applications for rare earth permanent magnet material in the high-tech fields, the demand for special purpose and high performance rare earth permanent magnet material is also growing. But for a long time, high-end technology of the production of rare earth permanent magnet material has been mastered in the hands of the developed countries. With low performance magnetic materials, China has been in the laboratory research stage which is unable to be mass production.
To meet the challenge and development of the international market, through constant research and experiment, China Magnets Source Material Ltd., has mastered the formula of grade N55 sintered NdFeB magnet and achieved mass production, broke the monopoly of developed countries. High performance rare earth permanent magnet materials have been used in the aerospace, medical equipment, industrial motors etc.
Grade N55 Sintered NdFeB magnet is the strongest magnet in the market nowadays for commercial use. The magnetic energy product for N55 is 52-56MGOe; what needs to pay attention is that the maximum operating temperature for N55 is 60 degrees Celsius, but not 80 degrees Celsius as other N series grade.
Material grade N55 can also be made into a variety of shapes, including N55 round sintered ndfeb magnet, N55 square permanent magnet, N55 ring rare erath magnet, N55 cylinder strong magnet and so on. If you have demand, please feel free to contact us.
To meet the challenge and development of the international market, through constant research and experiment, China Magnets Source Material Ltd., has mastered the formula of grade N55 sintered NdFeB magnet and achieved mass production, broke the monopoly of developed countries. High performance rare earth permanent magnet materials have been used in the aerospace, medical equipment, industrial motors etc.
Grade N55 Sintered NdFeB magnet is the strongest magnet in the market nowadays for commercial use. The magnetic energy product for N55 is 52-56MGOe; what needs to pay attention is that the maximum operating temperature for N55 is 60 degrees Celsius, but not 80 degrees Celsius as other N series grade.
Material grade N55 can also be made into a variety of shapes, including N55 round sintered ndfeb magnet, N55 square permanent magnet, N55 ring rare erath magnet, N55 cylinder strong magnet and so on. If you have demand, please feel free to contact us.
Radially Orientated Sintered NdFeB Ring
Due to the constraint of material, sintered neodymium used in motors is assembled into ring by segment magnet. China Magnets Source Material Limited can offer radially orientated Sintered NdFeB rings with a wide variety of grades and different coating options after researching continually in Sintered NdFeB material and its structure, orientation compression, magnetizing method, sintering and heat treatment process. Orientated Sintered NdFeB ring greatly improve motor output properties, significantly reduce the motor loss, at the same time.
Advantage:
• High precise geometry
• Homogeneous distribution of magnetic field
• Simple design and assembly, cost efficiency
• Precision of motor performances
• Huge marketing potential
Application:
• Actuators
• Magnetic bearings
• Magnetic clutch
• Motors (Peripheral motor, Spindle motor, Steering control
motor, Stepper motor)
• Other new products
Standard and skewed pole types are available for ring. OD, ID and H are all critical factors, pole numbers are also dependent on size, so for further information of radially orientated Sintered NdFeB rings, please contact us directly. Our engineer will evaluate your magnet design and give you some suggestion if needed.
Advantage:
• High precise geometry
• Homogeneous distribution of magnetic field
• Simple design and assembly, cost efficiency
• Precision of motor performances
• Huge marketing potential
Application:
• Actuators
• Magnetic bearings
• Magnetic clutch
• Motors (Peripheral motor, Spindle motor, Steering control
motor, Stepper motor)
• Other new products
Standard and skewed pole types are available for ring. OD, ID and H are all critical factors, pole numbers are also dependent on size, so for further information of radially orientated Sintered NdFeB rings, please contact us directly. Our engineer will evaluate your magnet design and give you some suggestion if needed.
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.
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.
2015年3月30日星期一
Permanent Magnet of The Magnetic Flux Leakage (MFL) Magnetizing Device for Oil Pipeline
China-Magnets-Source-Material.com | Best Magnetic Solution
The Magnetic Flux Leakage (MFL) of non-destructive inspections is the most
widely used detection method to detect a variety of flaws in oil or gas
pipeline. The MFL system consists
of magnetizing device, yoke and hall
sensors. Its working principle is (as below drawing): firstly, to magnetize
pipeline detection range by strong magnetic force from magnetizing device. The leakage
magnetic field will appear when there is flaw on the pipeline wall. Secondly,
to convert MFL signal collected by hall sensors into current to test the flaw size
and location.
Magnetizing is the first step for MFL
and determines whether pipeline test area can produce enough magnetic field
signals. Magnetizing device usually uses permanent magnet, such as ferrite,alnico, smco and ndfeb magnet, due to its different characteristics in high magnetic
energy product, small volume, light weight and no external power required.
Ferrite (ceramic) is cheap but low Br; AlNiCo is high Br but low coercive force;
rare earth magnet which includes samarium cobalt and neodymium iron boron is
high coercive force and remanence but expensive.
For different permanent magnets, the
magnetic circuit should be designed according to their magnetic properties,
give full play to its advantages, so that the magnetic circuit reaches to the
optimum. For high remanence and low coercivity magnetic material, it should
adopt an elongated magnet; but on the contrary, it should adopt stubby magnets.
If the magnetization effect cannot meet the requirements and coercivity cannot
increase, increasing the size of the permanent magnets (typically width and
thickness) can meet the requirement. Common grades for MFL magnet are N38, N42,N45 and N50M, sizes 40x20x10mm, 25x25x25mm, 40x25x10mm and 45x45x45mm and soon. We also manufacture arc (segment), ring, and cylinder type magnet formagnetic flux leakage testing.
China Magnets Source Material Ltd. hasmany years production experience for MFL magnets; the magnets have been appliedfor the detection of the Pacific seabed pipeline. If you have such requirement, please feel free to contact us.
2015年3月3日星期二
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.
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