Note: Brazing a magnetic steel rotor assembly

Objective:

Brazing a steel impeller and shaft 

End Product:

Steel impeller and shaft

Equipment:

Ambrell EASYHEAT 3.5 kW 400kHz induction heating system, equipped with a remote workhead containing one 1.0Ä μF capacitor An induction heating coil designed and developed specifically for this application. 

Materials:

Steel impeller 2.0 in (500mm) diameter, with a 0.25 in (6mm) steel shaft, braze ring 

Temperature:

1450 °F (780 °C)

Frequency:

262 kHz

Testing:

A two-turn helical coil is used to heat the impeller. The part is placed inside the induction coil and heated to 1450 °F within 1 minute to flow the braze ring. Induction is proposed to replace a hand-operated flame process requiring operator training and expertise. Induction heating delivers a precise, repeatable and reliable process. Improved joint quality is coupled with simplified operation.

Benefits:

Heating directly into the part, saving energy

Hands-free operation

Precise control of heat

Even distribution of heating

Elimination of flame hazard, torch maintenance 

Brazing a magnetic steel rotor assembly

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1655 Lyell Ave, Rochester, NY 14606 USA | Tel: +1 585 889 9000