Induction Brazing Copper Pipe Fittings

Induction Brazing Copper Fittings
Objective: Copper ‘tees’ and ‘ells’ are to be brazed to the aluminum body of a refrigeration valve

Material: customer’s valve copper fittings braze

Temperature: 2550 ยบF (1400ยฐC)

Frequency: 585 kHz

Equipment:ย DW-UHF-10kw induction heating systemย including a workhead containing two 1.5ฮผF capacitors (total 0.75ฮผF) and a three-turn helical coil

Process: The valve is placed inside the coil andย RF induction heating powerย is applied until the part is heated to the required temperature and the braze is seen to flow into the joint. Two tube sizes were run using the sameย induction heating system settings with differing cycle times.

Results/Benefits โ€ข energy is applied only to the zone to be heated โ€ข heating of the joint/braze is uniform and repeatable

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