ACM Magnetics, Inc. offers a complete line of standard electromagnets and power supplies, semi-standard electromagnets and custom-designed electromagnets, as well as related technical consulting, from design to manufacturing.
Electromagnets & Permanent electromagnets are used in a wide variety of applications:
The main advantage of an electromagnet over a permanent magnet is that the magnetic field can be stopped quickly or varied by controlling the electric current, unlike a permanent magnet that needs no power and its magnetic field remains fixed.
ACM Magnetics can produce semi-standard electromagnets, providing minor changes to standard electromagnets according to customer’s requirements. Examples of such modifications are external coating, current and voltage ratings, wiring and epoxy color. These products are produced according to customer orders and are not “off the shelf”.
Custom electromagnets are designed & manufactured in-house by ACM Magnetics. Whenever a special size, magnetic field or force, higher heat resistance (etc…) is required, we can design and manufacture a custom electromagnet according to customer specifications. We can produce prototypes, small volumes or large quantities of electromagnets.
Finite Element Analysis (FEA)
FEA is employed when a more precise or special magnetic field is required by the customer. ACM Magnetics can cater to a wide range of needs and design required magnetic properties for the custom electromagnet. Typical FEA services offered by ACM Magnetics include electromagnetic field motion mapping, magnetic field mapping, 2D and 3D modeling, magnetic properties at extreme temperatures, flux density calculations, and force and torque calculations. Finally, we offer an optimization of the design based on the results.
Design Principles & Target Parameters for Electromagnets
Customizing an electromagnet according to customers’ requirements may be required as a result of the need to optimize the following electromagnet parameters:
- Power / holding force – including heating effects
- Force as a function of the gap between electromagnet and ferromagnetic work pieces
- Effect on ferromagnetic work surfaces
- Heat & environmental requirements – electromagnets generate heat (Ohmic heating because of the resistance of the windings) and are affected by heat
- Special sizes to fit customers’ applications
- Magnetic field requirements: precise or specific magnetic field profiles
Round Electromagnets - Standard
Round electromagnets generate a magnetic field only when supplied with power. A common application for such electromagnets is for holding or carrying magnetic metals. Typically, this type of electromagnet is used when the magnetic field is required to work (magnetic field turned on) up to 50% of time. Standard round electromagnets use 24V, with 12V, 110V and 220V options available by request.
Permanent Electromagnets - Standard
Permanent electromagnets have a permanent magnetic field, but when supplied with power, the magnetic field is neutralized. This type of electromagnet is used when the magnetic field is required to work (magnetic field on) most of the time, and neutralized once in a while, e.g., a door lock. Standard permanent electromagnets use 24V, with 12V, 110V and 220V options available by request.
Rectangular Electromagnets - Standard
Rectangular electromagnets are typically used for holding, carrying and fixing of ferromagnetic work pieces. Standard rectangular electromagnets use 24V, with 12V, 110V and 220V options available by request.