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Induction Brazing Steel to Copper

///Induction Brazing Steel to Copper
Induction Brazing Steel to Copper 2017-07-21T06:20:51+00:00

Induction Brazing Steel to Copper

Objective
The goal is to braze steel tube to copper tube in 60 seconds using flux and braze alloy.

Equipment
UPT-W15/150

HS-8 Heat Station
Three turns dual diameter coil

Materials
• Steel tube and copper receiver
• Braze alloy (CDA 681)
• B-1 Flux

Key Parameters
Temperature: Approximately 1750° F (954° C)
Frequency: 148 kHz

Process:

  1. The assembly section was pre-assembled and fluxed (B-1) then located in the two diameter coil with a single pre-formed alloy ring set at the interface area.
  2. Alloy flow and joint completed in 60 seconds.
  3. The material was cooled in water following the completion of brazing.
  4. The joint was then cross-sectioned to validate that the brazing process had produced a strong, high quality joint.

Results/Benefits:

  • 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

Pictures

Induction Brazing Steel to Copper

Induction brazing steel to copper

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