UltraFlex demonstrating efficient induction brazing for aluminum assemblies

The demo had been requested by a manufacturer of electrical vehicle batteries looking to improve their current induction brazing process for an aluminum assembly, by using a more efficient induction power supply.

A recent demo by UltraFlex power technologies showed the efficiency of using UltraFlex induction heaters for an automotive brazing application. The demo had been requested by a manufacturer of electrical vehicle batteries looking to improve their current induction brazing process for an aluminum assembly, by using a more efficient induction power supply.


UltraFlex is a leading provider of advanced, digitally controlled induction heaters and as such is able to respond to most customer induction heating requirements. In this customer case, the parts to be brazed were an aluminum base and 2 aluminum tubes. The customer required that the brazed assembly be in horizontal position and both tubes brazed simultaneously, at maximum heat temperature of 650°C or less. Under these conditions, the customer was looking to achieve the shortest possible heating cycle.

UltraFlex engineers considered a 15 kW induction heater from the UltraFlex UltraHeat W series as most appropriate for this heating scenario. UltraHeat W are advanced, cost-effective 5-15 kW Induction heating systems utilizing the latest switching power supply technology. They feature adaptive digital phase control providing very efficient operation in a wide frequency range.

At power output of only 10 kW out of the available 15 kW, and separate brazing for each tube, the brazing for the entire aluminum assembly was completed within 60 seconds. Thanks to the even heat distribution, there was good alloy flow and the brazing was completed without melting any assembly pieces. The resulting joints were strong and reliable. By using a custom-designed induction coil, the induction brazing could be accomplished for both tubes simultaneously.

This induction brazing demo confirmed that by using a 15 kW UltraFlex induction heater and a custom-designed induction coil, the customer would be able to considerably increase the efficiency of his brazing process. He would achieve reliable and consistent results, independent of the operator skills.

Find out more at:
https://ultraflexpower.com/

Contact us at:
+1.631.467.6814
uptnews@ultraflexpower.com

About UltraFlex Power Technologies:
UltraFlex Power Technologies (ultraflexpower.com) offers the most advanced and innovative digitally controlled induction heating equipment in the industry. Its compact modular and flexible systems are used for a wide variety of induction heating, casting and melting applications.

Featured Product

T.J. Davies' Retention Knobs

T.J. Davies' Retention Knobs

Our retention knobs are manufactured above international standards or to machine builder specifications. Retention knobs are manufactured utilizing AMS-6274/AISI-8620 alloy steel drawn in the United States. Threads are single-pointed on our lathes while manufacturing all other retention knob features to ensure high concentricity. Our process ensures that our threads are balanced (lead in/lead out at 180 degrees.) Each retention knob is carburized (hardened) to 58-62HRC, and case depth is .020-.030. Core hardness 40HRC. Each retention knob is coated utilizing a hot black oxide coating to military specifications. Our retention knobs are 100% covered in black oxide to prevent rust. All retention knob surfaces (not just mating surfaces) have a precision finish of 32 RMA micro or better: ISO grade 6N. Each retention knob is magnetic particle tested and tested at 2.5 times the pulling force of the drawbar. Certifications are maintained for each step in the manufacturing process for traceability.