Custom Magnetic Shields and Production Volumes
Lab Testing, Evaluation, Alloy Sampling and Shield Prototyping
We’ve helped Electrical Engineers, Designers and other technical professionals to prototype, sample and fabricate custom magnetic shields for 75 years as of 2016. Using one of our "hands-on" Evaluation Test Kits, you can prototype your shield with everyday common hand-tools, or bench-top equipment. Once your prototype is complete, we can fabricate more accurate validation samples or pre-production parts to your specifications or drawings. With an extensive range of equipment and tooling, our quick-turn prototyping and annealing services are regularly used by customers for fit and functional testing, prior to production builds. All three of our Evaluation Lab Kits now contain MuMETAL® Foil and Sheet samples, in addition to Co-NETIC® alloy with high attenuation properties and NETIC® alloy for high saturation applications.
Deep-Drawn MuMETAL® Shielding Cans
MuMETAL® Deep Draw Foil is available for stamping and forming of MuMETAL® Shielding Cans which provide excellent low frequency magnetic field attenuation with low coercive forces and are used in many industries for protecting critical devices from magnetic interference, electromagnetic radiation and cross-talk signals. Products using MuMETAL® magnetic shielding cans include high-end audio amplifiers, current transformers, specialty transformers and other distinct electrical/electronic & printed circuit board (PCB) components. Our cans are easily integrated into circuits so this shielding method may be found in audio, automotive, automation, power supply and power generation sectors.
We also produce specific form tooling and custom size production cans for many of our clients. Manufacturing new tooling normally takes approximately six weeks before supply of the first prototypes for approval but we can produce hand-made prototypes of a new design in 2-3 weeks to verify the product prior to any tool cost being incurred.
All of our shielding enclosures can be supplied with either inside or outside tight fitting Lids, creating a 6-sided shielding enclosure. MuMETAL® Cans are not automatically supplied with Lids; if you require them for your application, please specify this at the time of placing your inquiry. All of our Lids and Cans may be further machined to include holes/slots configured for your wiring requirements. Typically, our high permeability (µ) 80% nickel-iron MuMETAL® Cans are shipped as is since our AA Perfection Annealing method provides a bright nickel appearance after anneal. We do offer other finishes including plating, electro-polish, powder coating and paint. Small order quantities of Cans, larger dimension sizes, or thicker material can be fabricated using traditional methods, including Spinning, CNC forming and TIG welding.
Deep-Drawn MuMETAL® Cans - Low Frequency EMI Shielding
CNC Precision Machined Tubing Low To High Volume Production
With our NEW MuMETAL® Round Bar in-stock, we can precision CNC Machine MuMETAL® Tubes or Pipes, producing hundreds of thousands of Tubular components. MuMETAL® Bar is typically specified for electrical and electronic technical applications requiring a magnetic shielding alloy with a high permeability property to reduce low field disturbances. Other uses of Mu Bar include production of precision machined or forged components such as current sensors, current transformer cores, or ground fault circuit breaker relay parts. CNC or computer controlled machines run automated processes that are highly precise and result in quality manufactured parts, components, or products. Tube bending, cutting, flaring, swaging, and shaping are some processes that may be selected in the design and production of MuMETAL® tubes. Rapid production runs, high volume parts, close tolerance, and cost efficiency are realized benefits of CNC technology.
Attach your design drawing specs for custom tubing fabrication when submitting a Request for Quote.
After a full magnetic anneal, MuMETAL® and Co-NETIC® shielding alloys exhibit a clean, bright surface condition. Also, because of its high nickel content, these alloys are corrosion resistant. Consequently, MuMETAL® and Co-NETIC® shielding alloys are usually used as annealed, without further finishing operations. But, there is a variety of finishing operations available to customers requiring additional corrosion resistance or cosmetically pleasing finished parts. Other purposes for finishing include preparing surfaces for paint adhesion and achieving a specific micro-inch (µin) finish.
We can offer the following Finishing services:
With a Fladder® Danmark A/S machine we can deburr or sand work pieces from all angles within the four parameters which are normally synchronized in pairs. If the RPM of the abrasive tools or the feed speed of work pieces is altered, the other parameters change automatically. Each function may also be 100% manually operated.
Also, with a metal vibratory finishing machine we can deburr products and remove sharp edges. Your parts are placed inside a drum filled with abrasive pellets and a substrate, then tumbling vibration is used to create a uniform random texture. The machine’s cycle speed and magnitude of vibration are usually variable, allowing effective treatment for a range of small- to large-sized parts.