Induction Annealing Copper Tubes

Objective
Uniformly high frequency annealing copper tubes simultaneously to 800°F (426°C) in under 10 seconds with induction heating.

Equipment
DW-HF-45kw induction heater


Helical coil

Material
• Two copper tubes
– OD: 0.69’’ (1.75 cm)
– ID: 0.55’’ (1.40 cm)
– Length: 5.50’’ (14.0 cm).

Key Parameters
Power: 27kW
Temperature: 842°F (450°C)
Time: 5 sec

Process:

1. The two copper tubes were placed together in the coil.


2. Induction heating was applied for 5s.

Results/Benefits:

• Improved process control for uniform induction heating to a desired temperature


• Power on demand and rapid, consistent heat cycles


• Technology without pollution, which is both clean and safe