Note: Sintering copper powder to a stainless steel shaft

Objective:

Sintering copper powder to a stainless steel shaft

End Product:

Steel shaft

Equipment:

Ambrell 30.0 kW induction heating system, equipped with a remote workhead containing eight 1.0 μF capacitors for a total of 8.0 μF
An induction heating coil designed and developed specifically for this application

Materials:

Steel shaft & shell assembly, approx 2 in (50.8 mm) diameter, 2 in (50.8 mm) tall, copper powder

Temperature:

1600 °F (871 °C)

Frequency:

54 kHz

Testing:

A four-turn helical coil is used to heat the assembly for five minutes. This provides slow, even heat for good penetration through the shell into the powder

Benefits:

  • Even heat through the shell to sinter the powder.

  • A method that is easily integrated into an automated production line. The design may be adapted to accommodate the indexed heating of several assemblies at the same time.

  • Hand- free operation that involves no operator skill for manufacturing. 

Sintering copper powder to a stainless steel shaft

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