Induction Annealing Aluminum With High Frequency Heating System
Objective Annealing a 1ā lip on aluminum cryogenic dewar that has beenĀ work hardened during the process of spin forming.
Material Aluminum dewar, lip has a 3.24ā (82.3mm) ID and is 0.05āĀ (1.3mm) thick
Temperature 800 ĀŗF (427 ĀŗC)
Frequency 300 kHz
Equipment ā¢DW-UHF-10KW induction heating system, equipped with aĀ remote workhead containing one 1.0 Ī¼F capacitor.
ā¢ An induction heating coil designed and developedĀ specifically for this application.
Process A two turn helical coil is used to heat the lip on the cryogenicĀ dewar. The dewar is placed in the coil and power is applied forĀ 2 minutes to anneal the required 1ā heat zone.
Results/Benefits Induction heating provides:
ā¢ Hands-free heating that involves no operator skill forĀ manufacturing
ā¢ Fast, controllable, accurate heating
ā¢ High efficiency, low energy cost
ā¢ Even distribution of heating