Note: Preheat steel for reforming
Objective:
Preheat low carbon steel rivets and handrail bars for reforming for construction
End Product:
Handrail bars
Equipment:
Ambrell 10 kW induction heating system, equipped with a remote workhead containing two 1.5 μF capacitors for a total of 0.75 μF
An induction heating coil designed and developed specifically for this application
Materials:
Low carbon steel rivets 7/16â (11.1mm) dia x 1.5â (38mm) & 1.9â (47mm) long, low carbon bar 1.25â (32mm) dia x 3â (75mm) heat zone
Temperature:
1922 °F (1050 °C)
Frequency:
248 kHz for the rivets 155 kHz for the bars
Testing:
A three-turn encapsulated helical coil is used for the rivets and a four-turn encapsulated helical coil is used for preheating the handrail bars. The rivets are heated to the 1922 °F (1050 °C) in 22-25 seconds and the bars are heated to the 1922 °F (1050 °C) in 4 mins 43 seconds.
Benefits:
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Controllable heat pattern
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Ease of on site location use
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Safe, no open flames
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Even distribution of heating

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