Brazing a Brass Pipe to a Wide Brass Part

Objective
Brazing a brass pipe to a wide brass part and a brass tip in under one minute using induction.

Equipment
UPT-W15/150
HS-8 Heat Station
2 turns coil

Materials
• Wide brass part
• Brass pipe
• Silver-based brazing alloy, provided by customer

Test 1 – Pipe to wide part:
Key Parameters
Power: 4.4 kW
Temperature: Approximately 1400° F (760° C)
Time: 38 sec

Test 2 – Pipe to tip:
Key Parameters
Power: 4.4 kW
Temperature: Approximately 1400° F (760° C)
Time: 17 sec

Process:
Test 1

• The wide part and brass pipe are assembled and a brazing alloy ring is placed between them.
• The assembly is put inside the coil and induction heat is applied.
• The joint is completed in 38 seconds.

Test 2

• The tip and pipe are assembled and a brazing alloy ring is placed between them.
• The assembly is put inside the coil and induction heat is applied.
• The joint is completed in 17 seconds.

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 process than flame brazing

Pictures

Video