Halsglühen in einem kryogenen Aluminium-Dewar

Annealing lip on aluminum cryogenic dewar

Objective: Annealing a 1” lip on aluminum cryogenic dewar* that has been work hardened during the process of spin forming.

Frequency: 303 kHz

• Ambrell 3.5 kW induction heating system, equipped with a remote workhead containing one 1.0 μF capacitor;
• An induction heating coil designed and developed specifically for this application.

Material: Aluminum dewar, lip has a 3.24” (82.3mm) ID and is 0.05” (1.3mm) thick.

Temperature: 800 °F (427 °C)

A two turn helical coil is used to heat the lip on the cryogenic dewar. The dewar is placed in the coil and power is applied for 2 minutes to anneal the required 1” heat zone.

• Hands-free heating that involves no operator skill for manufacturing;
• Fast, controllable, accurate heating;
• High efficiency, low energy cost;
• Even distribution of heating;