Note: Preheating steel garden tools for press stamping
Objective:
Preheating various size blades and knives for garden tools
End Product:
Steel garden tools
Equipment:
Ambrell 15 kW induction heating system, equipped with a remote workhead containing six 1.0 μF capacitors for a total of 6.0 μF
An induction heating coil, designed and developed specifically for this application
Materials:
Steel pieces of various size 0.16 in (4 mm) thick
Temperature:
1562 °F (850 °C)
Frequency:
57-80 kHz
Testing:
Three different coils are used for this heating application
âÂË A two turn pancake coil for the blade
âÂË A eight turn rectangular helical coil for the knives
Pieces are placed in their specific coil for heating. For the blades, the center hole must be heated to 1562 °F (850 °C) and for the knife 2/3 of the blade must be heated. Depending on the piece, the steel reaches 1562 °F (850 °C) in 13-19 seconds. After the metal is preheated it is press stamped.
Benefits:
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Hands-free heating that involves no operator skill for manufacturing
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Configurable heating profiles
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Faster process times
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Even distribution of heating

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