Annealing brass and bronze tubing prior to bending to form handrails
  • Annealing brass and bronze tubing prior to bending to form handrails

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Manufacturer: Ambrell

Annealing brass and bronze tubing prior to bending to form handrails

Annealing brass and bronze tubing prior to bending to form handrails


Objective: Annealing brass and bronze tubing for bending in a mandrel bender to form handrails.


Frequency: 228 kHz


Equipment:
  • Ambrell 6 kW induction heating system, equipped with a remote workhead containing two 0.5μF capacitors for a total of 0.25μF;
  • An induction heating coil designed and developed specifically for this application.

Material:
  • Brass tubes 1.5” (38.1mm) and 2” (50.8mm) diameter with 0.065” (1.65mm) wall thickness;
  • Bronze tubes 1.5” (38.1mm) and 2” (50.8mm) diameter with 0.100” (2.54mm) wall thickness.

Temperature: 1000 °F (538 °C)


Process:

A twelve turn helical coil is used to heat an 8” (20.3cm) area 3” (7.6cm) above the end of the tube. Each of the four tubes require a different heat cycle and time to reach the required temperature. Please see the chart below for each tube.

1.5" 1.5" 2" 2"
Brass Bronze Brass Bronze
Heat Cycle Time [s] 80 100 100 120
Power [kW] 4 4.15 3.1 3.4
Current [A] 248 255 200 212
Frequency [kHz] 197 197 228 228

Benefits:
  • High efficiency, low energy costs
  • Precise and controllable placement of heat
  • Hands-free heating that involves no operator skill for manufacturing
  • Even distribution of heating, eliminating fractures during bending
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Annealing brass and bronze tubing prior to bending to form handrails


Objective: Annealing brass and bronze tubing for bending in a mandrel bender to form handrails.


Frequency: 228 kHz


Equipment:
  • Ambrell 6 kW induction heating system, equipped with a remote workhead containing two 0.5μF capacitors for a total of 0.25μF;
  • An induction heating coil designed and developed specifically for this application.

Material:
  • Brass tubes 1.5” (38.1mm) and 2” (50.8mm) diameter with 0.065” (1.65mm) wall thickness;
  • Bronze tubes 1.5” (38.1mm) and 2” (50.8mm) diameter with 0.100” (2.54mm) wall thickness.

Temperature: 1000 °F (538 °C)


Process:

A twelve turn helical coil is used to heat an 8” (20.3cm) area 3” (7.6cm) above the end of the tube. Each of the four tubes require a different heat cycle and time to reach the required temperature. Please see the chart below for each tube.

1.5" 1.5" 2" 2"
Brass Bronze Brass Bronze
Heat Cycle Time [s] 80 100 100 120
Power [kW] 4 4.15 3.1 3.4
Current [A] 248 255 200 212
Frequency [kHz] 197 197 228 228

Benefits:
  • High efficiency, low energy costs
  • Precise and controllable placement of heat
  • Hands-free heating that involves no operator skill for manufacturing
  • Even distribution of heating, eliminating fractures during bending
Less
Read more
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