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Category: Technically Speaking

Technically Speaking

Magnetization Directionality Options

depecition of how a horshoe magnet is magnetized
Traditional horseshoe shaped magnets are magnetized axially.

In many applications, the direction of a magnet’s pole might not matter – just as long the magnet attracts where needed.  However, in other instances, the directionality of the magnet is an integral aspect of the intended application.

Understanding the conventional and specialized magnetization directionality options available helps ensures successful applications.

 

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Technically Speaking

Permanent Magnets and Electromagnets – Different Magnet Types Feature Different Properties

Neodymium magnets are rare earth magnetsMagnets work in hundreds of applications around you daily.  But depending on the use, the magnet could be a permanent magnet or an electromagnet.  Permanent magnets and electromagnets both possess different characteristics and benefits.

Permanent Magnets

As the name suggests, a permanent magnet is any magnetic material whose atoms have been permanently aligned to create a persistent magnetic field.   The magnetizing process occurs during manufacturing. Continue reading…

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Technically Speaking

Exciting New Advances with Magnets Hint at Major Innovations

3D printed magnets is one of several new advances with magnets
Image Credit: Department of Energy (DOE)
Magnets have come a long way since ceramic magnets first made their debut in 1952.  In demand for everything from clean energy to technology to manufacturing, magnets today are driving some of the most innovative products for tomorrow.

In the past year we’ve noticed exciting new advances with magnets – and they seem to be everywhere.  Here are a few of the highlights. Continue reading…

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Technically Speaking

Temperature and Magnetism: Knowing Your Operating Temperature Matters

Selecting a magnet involves many factors, not the least of which is the temperature at which it will be used.  Understanding the relationship between temperature and magnetism for each type of magnet helps ensure the correct magnet for high heat application is selected.Image illustrating how temperature and magnetism are related

When discussing temperature and magnetism, there are two ranges to be aware of: the Maximum Operating Temperature and the Curie Temperature. These are different for each magnet material, as well as the size and shape of a magnet. Continue reading…

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Technically Speaking

How to Separate Magnets

One of the most fascinating things about magnets is their incredible strength.  It can also be the source of frustration for anyone who has ever gotten their magnets stuck together.  Of course large magnets for tool holding appear strong, but even small rare earth magnets can prove surprisingly difficult to separate.  How to separate magnets depends largely on the strength of the magnet.

Separating magnets relies on a few simple principles – create an air gap and slide don’t pull.  Often our neodymium magnets come with a plastic or heavy cardboard spacer between them.  It’s helpful to keep these for future storage.  As a rule of thumb, the stronger the magnet, the thicker the spacer should be.  Spacers simply provide a non-attracting surface for the magnets making it easy to pull them apart. Continue reading…

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Technically Speaking

Shipping Magnets: Understanding the Rules

Shipping magnets safely might be a little more complicated than you realize.  In today’s age of instant gratification, there are still a few times that our products just can’t be shipped by air for overnight delivery. Graphic image of shipping magnets by air

Because of their ability to interfere with the navigation and electronic equipment on planes, many industrial magnets, magnetic assemblies and strong rare earth magnets cannot be shipped via air.

Whenever possible we prefer to ship magnets by ground transportation, because magnets shipped via air will be classified as Dangerous Goods if not properly packed to block their magnetism.  Additionally, many carriers will not accept magnets for air shipments. Continue reading…

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Technically Speaking

Handle With Care: Tips for Magnet Safety

Tip for magnet safetyMagnets might appear small and shiny, but don’t under estimate their strength.  Just like most things there are some common sense guidelines for handling magnets.  These tips for magnet safety can help prevent personal injury and property damage. Continue reading…

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Technically Speaking

Understanding Magnet Grades

Grading of magnets can be a perplexing myriad of abbreviations and numbers on a curve. Understanding the magnet grades is an important factor in choosing the correct mMagnet Grade Chalkboardagnet for the application.

Permanent magnets are graded by the maximum energy the magnet produces. Typically, the higher the magnet grade, the higher the corresponding strength of the magnet.

Magnetic strength is most often measured in two ways, grade and pull strength. Raw magnetic materials are commonly measured by grade, and magnetic assemblies by pull strength. For the purposes here, the focus will remain on grades. For information about pull strength, refer to our post Measuring Pull Strength. Continue reading…

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Technically Speaking

Measuring Pull Strength

One method of determining magnet strength is through pull strength, or a pull test.

Measuring magnet strength though a pull test.
Determining strength of a magnet through a pull test.

Pull strength is a reliable method of measuring the maximum strength, or holding power, that a magnet has before it is separated from ferrous material. It is measured in pounds or kilograms.

Magnetic assemblies are measured by the pounds of pull in a vertical test. Obviously, the higher the pull strength, the greater the magnet strength. Permanent magnetic materials are commonly measured by grade. For more information about magnet grades, refer to the post Understanding Magnet Grades. Continue reading…

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Technically Speaking

The History of Magnets – An Infographic

The History of Magnets

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