The objective of the application test is brazing Aluminum to Aluminum in less than 15 seconds. We have aluminum tubing and an aluminum “receiver”. The brazing alloy is an alloy ring, and has a flow temperature of 1030F.
Completed assembly by Brazing Aluminum to Aluminum
Materials
• Aluminum tube: 0.167” OD, 0108” ID
• Aluminum component: ID .1675”, depth .288”, chamfer at top area is 0.2375” ID max
• Braze alloy in the form of two-turn alloy ring
• Flux
• Aluminum tube: 0.167” OD, 0108” ID
• Aluminum component: ID .1675”, depth .288”, chamfer at top area is 0.2375” ID max
• Braze alloy in the form of two-turn alloy ring
• Flux
Key Parameters
Temperature: 1030F
Power: 2 kW
Time: 14 seconds
Temperature: 1030F
Power: 2 kW
Time: 14 seconds
Frequency
107 kHz
107 kHz
Process:
- The Aluminum component and tube were assembled together with the alloy ring. Flux was added.
- The part was positioned in the induction coil.
- Several tests were conducted with different cycle times to confirm the heating time for a good braze.
- At 15 seconds the assembly melted.
- At 14 seconds, we had success for brazing aluminum to aluminum, and a good quality braze joint was achieved.
Results/Benefits:
The 5 kW system requested by the customer, will meet the customer’s time requirements for brazing.
The 5 kW system requested by the customer, will meet the customer’s time requirements for brazing.
- Precise control of the time and temperature
- Power on demand with rapid heat cycles
- Repeatable process, not operator dependent
- Safe heating with no open flames
- Energy efficient heating
Pictures
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| The aluminum tubing and aluminum component to be brazed, shown separately and as assembled. |
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The Aluminum component and Aluminum tubing were assembled together with
the alloy ring.
Flux was added. The part
was positioned in the induction coil.
|
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| Induction power was turned on, and the part began to heat. Picture shows approximately 2 seconds after power has been applied. |
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| The part continued to heat. Picture shows approximately 4 seconds after power has been applied. |
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| The part continued to heat. Picture shows approximately 10 seconds after power has been applied. |
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| The part continued to heat. Picture shows approximately 12 seconds after power has been applied. |
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| Power was turned off after 14 seconds, and the process of brazing aluminum to aluminum was complete. |
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| The completed Aluminum to Aluminum braze. |
Video
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