TechTalk: Industry News

Alnico is a common and very commercially mature magnet alloy comprised of Aluminum, Nickel, Cobalt, Titanium and Iron. (There are also small amounts of various other elements including, but not limited to; copper, silicon, columbium, and zirconium.)

Alnico has a very high Residual Induction (Br). This characteristic of a magnet offers a sense of how large/strong of a magnetic field a particular magnet alloy can generate. (Typically the higher the Residual Induction the larger, more dense the magnetic field can be generated by a magnet.)

Many times, we are asked about the effects of thermal cycling on rare earth permanent magnets, but there is not a simple rule of thumb to offer. From a first order standpoint, thermal cycling will degrade the performance of rare earth Neodymium Iron Boron and Samarium Cobalt magnets. There are two primary mechanisms which drive this degradation. One occurs quickly, and the second occurs over a long period of time…

After several months of programming, testing, and polishing, we have now made our interactive Demagnetization / Permeance Coefficient (Pc) calculator available for use on our website. This powerful tool calculates the Permeance Coefficient for a given magnet based on the magnet grade, shape, dimensions, and operating temperature specified…

In the simplest form, magnets are able to exert a force over a distance. Whether by inducing a field in a ferromagnetic material or interacting with another magnet, a magnet can exert a force without touching. The magnet’s magnetic field is the mechanism for this non-contact force…

When selecting a style of Synchronous Magnetic Torque Coupler, one must consider the type and how the coupler will be integrated to ensure a trouble free performance. The style of coupler, Face-to-Face or Coaxial, will generally be dictated by the requirements of the application, but the ability to ensure correct radial, axial, or angular alignment will also need to be considered…

In this third Tech Talk article in a five-part series about Magnetic Torque and Magnetic Linear Couplers, we take a closer look at Magnetic Linear Couplers. Similar to a Magnetic Torque Coupler, a Magnetic Linear Coupler relies on the magnetic interaction between two coupler halves. As in the Torque Coupler, usually one half is the driver, and the other half is the follower. Linear Couplers are often simpler to design and to construct when compared to Torque Couplers because the movement is linear and non-rotational…

We are asked many times about the shelf life of permanent magnets. The simple answer is, no, there is no shelf life; however, as all things go with magnets, it is not that simple…

30 to 40 years ago, there were many small to medium sized magnet producers who competed to expand the performance of the magnet products they offered. They eagerly sought to raise energies, increase the heat tolerance, and increase the resistance to corrosion for commercially produced magnets. They also invested resources in developing new alloys to bring to market, and there was competition to increase performance…

In this second post of our blog series exploring magnetic couplers, we examine two different types of the commonly used “synchronous” style of magnetic torque coupler, which is a style of coupler in which the coupler’s output shaft speed equals the input shaft speed.  The two primary versions of the synchronous style torque couplers that we will be discussing are the “Face-to-Face” type and the “Coaxial” type.

This Tech Talk article is the first in what will become a five-part series of articles focusing on Magnetic Torque and Magnetic Linear Couplers. Magnetic Torque and Magnetic Linear Couplers are used for applications where non-mechanical contact is desired. They are employed in high-vibration applications or where two operating environments need to be separated.