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TechTalk Blog by Dura Magnetics

AS9100C Certification Gives Dura Magnetics Deeper Entry into the Aerospace Industry

In an ongoing effort to maintain leadership as a magnetic solution provider, we recently earned our certification in AS9100C Aerospace Management Systems. This certification takes ISO 9001 to the next level – requiring an even greater degree of quality and rigor to receive. Our certificate can be found here: AS9100D Certificate.

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How Heat Affects a Magnet’s Holding Power and How to Use Temperature Coefficients

The maximum operating temperature of a magnet is an important property, but it is simply the point beyond which the magnet will experience an irreversible loss in net magnetization. In actuality, a magnet will lose net magnetization as soon as it starts to heat up. This loss is called “reversible” as it is recovered as soon as the magnet cools back down. While avoiding irreversible loss may seem to be the primary concern, even reversible loss can cause a negative impact on a magnet’s performance because while the magnet does not permanently demagnetize, it may not generate enough field for a given application at a particular operating temperature.

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How Air Gap, Workpiece Conditions, and Operating Temperature Affect Magnetic Pull Force

In sizing and selecting magnets and custom magnetic assemblies, it is important to ask a number of questions about the working area in which the magnet will operate. The answers to these questions help deliver a higher level of success in providing a magnet that meets the fit, form, and function of the application. Three areas of concern that we’ll address are: air gap relative to holding force, workpiece conditions, and operating temperature. All of these represent important conditions for the magnet’s ultimate performance…

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Magnetic Component Design: Magnet Feature Optimization for Manufacturability Improvements

Designers and engineers that need to incorporate a magnet into their application are not often aware of the mechanical characteristics of magnetic alloys. Features that are commonly specified and produced on materials such as mild steel, stainless steel, aluminum, or brass can be very difficult to produce on a magnet or incorporated into magnet assemblies…

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Samarium Cobalt (SmCo) Magnet Pull Force Calculation Tool Now Available

As part of our ongoing effort to provide magnet-related resources that may be useful to those in the field, we have added to our collection of magnetic property calculation tools. This particular resource is a magnetic force calculation utility that aids in estimating the attractive (pull) force of Samarium Cobalt magnets.

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Magnetic Saturation: Understanding Practical Limitations to How Much Induced Magnetism Can Be Achieved in a Workpiece

There are limits to how much induced magnetism is possible in different materials and similar workpieces of varying size, shape and configuration. The principle of magnetic saturation observes that there is a point of diminishing returns at which attempting more externally applied magnetic field (H) will give rise to no additional magnetic induction (B). Increasing the thickness of a workpiece is generally beneficial. However, these changes will likely impact cost, mass, and possibly ease of manufacturing. It is therefore beneficial to understand and control for the magnetic saturation of materials during the design stage…

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Did You Know?

Alnico is frequently specified but improperly used for sensor applications. See our Magnetic Sensors Page to ensure you are designing your sensor triggering application correctly.

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