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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…
How do you QC a permanent magnet, magnetic assembly, or a piece of equipment utilizing magnets? There are several methods which will pass a Gage R & R, but they are generally unknown to people outside of the magnet industry…
Magnets are produced in a wide array of sizes, shapes, and strengths, but there are similarities between all magnetic materials. They are all relatively brittle which when coupled with their magnetic strength present a number of issues. They also invoke curiosity, and who hasn’t heard the adage of what curiosity did to the cat? Handling…
A Closer Look at Magnetic Permeability and Why Some Types of Materials Are More Attracted by Magnets Than Others Two magnets attract to each other because their fields interact. Usually, materials that are not magnets do not have a net external field, and obviously, they do not attract to things; however, some metal alloys can…
So the right type of magnet has been designed or selected for your application and now you’ve begun the task of finding a company that can supply the part, right? Well, it’s not always that easy as magnets are unlike other commodities and, in fact, they should not be treated as commodities at all. At…
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.
Since its incorporation in 1961, Dura Magnetics has been a leading manufacturer of fabricated alnico magnets. Alnico is an acronym used to reference the three primary elements used in the manufacturing process; aluminum, nickel, and cobalt. Prior to the 1970’s and the advent of rare earth magnets, alnico was the strongest type of permanent magnet. …
The term rare earth magnet is a generic name used to describe two types of magnetic material: samarium cobalt and neodymium iron boron. Both of these magnetic alloys utilize rare earth elements as the magnetic constituents and the characteristics offered by both material types lend themselves to specific applications…
Each post in our Tech Talk blog is designed to help you better understand the complex and sometimes confusing world of magnets. In recent posts, we discussed material grade selection, machinability of magnetic alloy, and understanding how materials such as N52 neodymium are classified. This post explains how magnetic assemblies work and why they are…
Through continuous improvement efforts, Dura Magnetics has added the capacity to deliver micro-sized magnets. Magnet Materials: Oftentimes ultra-small magnets are limited to bonded magnetic products, but now Dura can deliver miniature, fully dense Neodymium Iron Boron (Neo), Samarium Cobalt (SmCo), and Strontium Ferrite (Ceramic). In addition, Dura can supply miniature cast Aluminum Nickel Cobalt (Alnico)…