Handheld Induction Brazing Copper Tubing and Fitting

Handheld Induction Brazing Copper Tubing and Fitting Process

Objective

Induction brazing copper to copper: ½” copper tubing and copper fitting with brazing alloy and flux using the DWS-10 HandHeld Induction Brazing System.

Equipment

 DWS-10 handheld induction brazing heater

Materials

• Copper fitting

• Copper tubing

• Silver brazing alloy (pre-formed)

• Flux

Process:

1. The copper tubing and brass fitting were assembled together.


2. A pre-form of the silver brazing alloy was seated above the joint, and flux was added.


3. The assembly was placed within a fixture.


4. The C-Coil of the Brazing assembly was placed around the copper tubing and fitting, and the trigger was depressed. After roughly 40 seconds the brazing was complete.


5. The material was cooled in water following completion of the brazing.


6. The joint was then cross-sectioned to validate that the brazing process had produced a strong, high quality joint.

Results/Benefits:

Induction heating provides:

• Strong durable joints


• Selective and precise heat zone, resulting in less part distortion and joint stress than welding


• Less oxidation


• Faster heating cycles


• More consistent results and suitability for large volume production, without the need for batch processing


• Safer than flame brazing

 

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