EEC is a leading permanent magnet manufacturer, producing millions of magnet solutions across our multiple facilities. Our products are used in the world’s most demanding applications, so our manufacturing process has been developed to deliver best-in-class quality. Our manufacturing facilities produce products which comply with numerous industry quality standards
Lifetime Warranty for SmCo Magnets
EEC customers know that we’ve always stood behind our products for as long as they are expected to perform in the applications for which they were intended. We’re just taking this opportunity to advise new prospects and customers that they can put their minds at ease when they select EEC as their supplier for samarium cobalt magnets.
Consider Voyager 1, which was launched in 1977. As of 11 March 2013, Voyager 1—with EEC magnets in the TWT amplifiers—had been operating for 35 years, 6 months and 6 days. We serve other applications with life expectancy >40 years. The point is, we understand the meaning of permanent magnets and guarantee our magnets accordingly.
Magnets do fail. Two of the most common failure modes involve impact or overheating. Because all rare earth magnets are brittle, intermetallic compounds they must be protected from impact or tensile forces. Therefore, we can’t guarantee against mishandling. Also, magnets have upper limits with regard to operating temperature. For standard SmCo5 the upper limit is 300°C. For Sm2Co17, the upper limit is 320°C. For our Ultra High Temperature, UHT Sm2Co17 magnets, it is possible to extend the upper limit to as high as 550°C when proper environmental protection is in place. We guarantee that our magnets will operate up to the temperature for which they are designed.
The standard warranty for many products is that they are free of defects when they leave the supplier’s facility. The warranty for EEC samarium cobalt magnets goes well beyond that. We guarantee that our magnets will perform to your specifications for as long as your system is expected to operate. The only exceptions relate to misuse, e.g. mishandling or overheating.
EEC is ISO 9001:2015 and AS9100D (Technically Equivalent to EN 9100:2016 and JISQ 9100:2016) certified. EEC continues to invest in our business in order to provide customers with best-in-class service. ISO 9001:2015 and AS9100D is the basis for EEC’s internal quality management system, as many of its customers are in highly regulated industries, which require their own compliance to the standards.
EEC works with suppliers who deliver the best quality, value and service at the most competitive cost. Our suppliers are innovative and committed to driving continuous improvement in their operations.
EEC has a broad and deep portfolio of permanent magnet material grades (neodymium iron boron, samarium cobalt, alnico, and ceramic) to satisfy virtually any application requirement. These standard material grades provide customers with a large selection of existing products that can be customized quickly and cost effectively if required.
As the first permanent magnet manufacturer in the world to commercially produce samarium cobalt (SmCo), EEC continues to deliver innovations with SmCo through the development of new high-performance grades. In order to deliver certain high performance and high quality SmCo grades customers require, EEC has continued to maintain a vertically integrated production process in North America in order to control the quality at every step of the production process.
Below is a summary of that process flow today.
Induction Melting: EEC purchases pure raw materials-Sm, Co, Fe, Cu, & Zr for the in-house production of SmCo 1:5 & 2:17 alloys. Pure metals are alloyed in an inert gas using an induction melting furnace. Precise control of alloy chemistry allows EEC to produce a wide range of materials to meet your demanding requirements.
Crushing: Rare earth alloys (inter-metallic compounds) are crushed to powders with an average particle size of ≈ 250 microns.
Milling; We process crushed alloy powder by ball or jet milling and reduce the average particle size to ≈ 3 microns. Because the resulting fine powder is chemically reactive and pyrophoric in nature, it requires protection from air (oxygen) using inert gas.
Blending: Our ability to precisely control material compositions during the blending operation helps us achieve specific magnetic properties.
Pressing: Released production powders with predetermined magnetic properties are pressed into green compacts using either axial, transverse, or isostatic presses. The pressing force and magnetic alignment direction is parallel for axial presses, but perpendicular for transverse presses. Isostatic pressing provides equal pressure from all directions for pre-aligned powder.
Sintering: Densification and the development of magnetic properties are accomplished through sinter, solution and aging processes in the presence of a vacuum or an inert gas.
Machining: Sintered rare earth magnets, because of their brittle nature, are machined to final dimensions using grinding, slicing, or wire EDM technology.
Magnetization, Testing, & Quality Assurance: Magnetization, stabilization and testing of rare earth magnets are done to satisfy your specific requirements.
MACHINING OF CUSTOM MAGNET SOLUTIONS
Our 85,000 square feet of manufacturing space houses a variety of machining capabilities that allow EEC to deliver high tolerance parts for demanding applications.
- Ram EDM
- CNC Machining
- Grinders (various types)
EEC is able to provide high quality magnet assemblies for any application. Our experience in assemblies has allowed us to develop an expertise in common considerations such as adhesives, bonding, performance optimization, and design for manufacturability.
- Custom Packaging
- Clean Room Capabilities (Class 10,000)
MAGNETIZATION & TESTING
Because EEC must be an expert permanent magnet manufacturer in order to develop its own unique materials, we have a deep understanding of material properties. This knowledge is utilized in our extensive ability to magnetize and test magnetic properties of magnet solutions.
- Magnetizing and Magnet Adjusting Equipment
- Automated plotter
- Magnetic characterization
- Automated magnetic Testing Equipment
EEC is able to provide consultation and services for any finishing operation required for a magnet solution.