6. Method of operation
WARNING!
Use suitable lifting equipment for heavy yokes and workpieces. Prevent personal
injury by improper handling.
The weight of the workpiece may not exceed the value given in section 6.3 and in
the technical specifications. This can cause failure of the device and personal
injury.
Ensure that the power supply cable cannot come into contact with the workpiece to
be heated. Damage to the cable can cause electrocution!
Never use a metal strap to support workpieces or suspend them in the magnetic
field. High currents could start running through the strap, causing it to heat up.
A workpiece can be placed in 2 different ways:
Hanging, with yoke through the workpiece
Large workpieces can be thermally insulated by wrapping them in insulating material, such as a
welding blanket. This ensures that the heat stays in the workpiece and does not dissipate.
6.1 Heating a hanging workpiece
•
Place the induction yoke with the
bearing on the poles. Make sure that the
ground side is positioned straight on the
poles.
•
Always choose an induction yoke that
fills the bore of the bearing as much as
possible. You can even use 2 yokes at
the same time. This promotes optimal,
fast and even heating.
•
Make sure that the bare-metal sides are
sufficiently coated with Vaseline to
ensure optimal contact and avoid
vibration.
Horizontal, with workpiece around the pole
13