Induction Brazing Steel Tube with Copper Ring
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Objective To heat an oil suction assembly (steel tubing and filter cap) to 1,850°F (1010°C) within 15 seconds for a brazing application.
Material 0.125” (3.2mm) diameter steel tube and filter cap assembly, high temperature brazing flux, copper ring.
Temperature 1850°F(1010°C)
Frequency 281 kHz
Equipment • Power of 10KW induction heating system equipped with a remote workhead containing 0.66 μF capacitors
• An induction heating coil designed and developed specifically for this application.
Process A two-turn, specially-contoured helical induction coil is used to heat the tube assembly near the joint area. A copper ring and high temperature flux are then applied to the joint area. Power is applied for 15 seconds until the braze flows.
Results/Benefits Induction heating provides:
• Easy loading and unloading of parts
• Heat very precise areas within production tolerances
• Hands free heating that involves minimal operator skill for manufacturing
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