Soldering a steel canister for sealing

Objective

Induction offers benefits over a current hand-soldering operation of these beverage dispenser reservoirs.

End Product

beverage dispenser reservoirs

Equipment

Ambrell 2.4kW/300kHz induction heating system, equipped with a remote workhead containing two 0.33μF capacitors for a total of 0.66μF

An induction heating coil designed and developed specifically for this application.

Materials

Steel canister (reservoir), 6inch x 4 inch oval, end plates

Temperature

500 ºF (250 ºC)

Frequency

248 kHz

Testing

Current hand-soldering process results in uneven, non-uniform joints and requires long production times. Induction delivers uniform, quality joints by generating heat within the end-plate and reservoir walls.
A single-turn helical coil is used to heat the steel canister. The part is placed in the coil and heated for 2 minutes to reflow a solder ring placed inside the canister to make a leak proof joint

Benefits

• Induction heating provides:

• heat generated within the part, saving energy and time

• improved throughput since the entire base is soldered at one time

• precise controllable heat

• uniform, high-quality joints

• repeatable results

• even distribution of heating

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