For Low Frequency Applications

Frequency (0.02-50 kHz)

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Using Fluxtrol greatly reduces the labor intensive task of stacking and attaching laminations individually. All FLUXTROL® & FERROTRON® materials, being solid in form, eliminate the degradation/corrosion build up that is common between individual laminations. Lamination degradation can result in coil failure or changes to the heat pattern. Another significant benefit of FLUXTROL® & FERROTRON® materials is that they can be easily machined. This includes in–field modification when necessary which is not possible with individual laminations.

Induction Coils Perform Better

• Improved coil lifetime with Fluxtrol LRM versus laminations due to reduced copper thermal racheting.
• No overheating in the presence of 3D magnetic fields.
• Fluxtrol LRM covers more of the inductor for greater efficiency.
• Fluxtrol LRM can be positioned without keepers for enhanced heat pattern control.

Fluxtrol LRM Benefits

Fluxtrol concentrator features include (but not limited to) the following:

• Cost effective alternative to laminations with fast delivery.
• Less construction time versus laminations.
• Available in near–net shapes and finished to size.
• Copper operates at lower temperatures with Fluxtrol LRM versus laminations.

 

Fluxtrol LRM for Low Frequency Applications

Ideal for low frequency applications (0.02—50kHz). Highest magnetic permeability in the Fluxtrol LRM family of materials. Material has excellent mechanical strength, thermal conductivity and good machinability.

Properties Units Fluxtrol LRM Density +/- 2% g/cm3 6.6 Initial Permeability 63 Maximum Permeability 120 Saturation Flux Density Tesla 1.6 Operating Frequency Range kHz 0.02-50 Temperature Resistance Centigrade 250 Long Term 300 Short Term Thermal Conductivity W/cm C 0.2 Resistivity kOhmcm 0.5

 

FLUXTROL – The Ultimate Lamination Replacement Material for Your Next Coil!

Fluxtrol LRM for Low Frequency Applications

Ideal for low frequency applications (0.02–50kHz). Highest magnetic permeability in the Fluxtrol LRM family of materials. Material has excellent mechanical strength, thermal conductivity and good machinability.

Fluxtrol Lamination Replacement Material (LRM)

Fluxtrol LRM utilizes the anisotropic nature of the magnetic composite material to maximize flux concentrator and induction coil performance Optimal orientation of material in C–shaped concentrator provides high permeability, lower losses and:

• Magnetic and thermal properties are higher in the direction perpendicular to pressing.
• Electrical strength is higher in direction of pressing

Induction Coil Runs Cooler with Fluxtrol LRM

• Steady state temperature distribution in the in pipe seam anneal induction coil with laminations

– Temperature scale 20° – 250° C

• Steady state temperature distribution in the in pipe seam anneal induction coil with Fluxtrol LRM

– Temperature scale 20° – 250° C

Temperature Evolution Curves in Critical Areas for Intermittent Heating

• Maximum copper temperature with Fluxtrol LRM is 20° C less than with Laminations, temperature variation span is 35° C lower

Typical Failure Mode of Laminations

• Image illustrates lamination overheating in a three dimensional field (blue edges)

Crankshaft Coil Failure

• Copper failure due to thermal racheting on crankshaft coil with lamination

Comparison of Lifetime Improvement with Fluxtrol LRM

Coil Lifetime with Fluxtrol LRM was 2.3 times longer than coil laminations over an 18 month period.

Comparison of Laminates versus Fluxtrol LRM

Fluxtrol LRM (right) has equivalent heating to laminations (left)

Standard Replacement Sizes

NOTE:

If your application requires sizes/dimensions different than those shown, please contact Fluxtrol as custom sizes can be produced.

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Fluxtrol LRM Application Methods

• Thermally conductive two part epoxy is recommended.

In addition, the following mechanical fasteners may be employed.

• Secured by copper tabs
• Brass studs with washers and nuts
• Drawn together with flexible bands
• Trapped in place with nonconductive materials

Fluxtrol LRM is Designed for:

• Axle Bar coils
• Crankshaft coils
• Stem coils
• Spindle & Bearing coils
• Seam Anneal coils
• Specialty Melting coils

Fluxtrol LRM is Aggressively Priced to Replace Laminations!