induction brazing brass pipe to brass part

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

Equipment
DW-UHF-6KW-III handheld induction brazing machine

handheld inductino heater

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 induction heating 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

=