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.
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