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Rolling
tube expanders must be done with the correct equipment to
achieve consistent gas tight seals. Over rolling a tube is
more dangerous than under rolling as this can cause fractures in
the tube and weak areas. Also, over rolling can cause
excessive wear on the tube expander itself and even cause
rollers to break and wear grooves into the mandrel.
Therefore to achieve consistent rolls we need a way of
controlling the torque delivered to the tube expander.
In Electrical Systems this is done by the means of a Electronic Torque Controller which measures the actual wattage drawn by the drive then shuts off at the desired setting. However, many torque controllers available use the voltage of the incoming current as a means of measurement of the power delivered to the tube expander. This is not a consistent way of measurement because if the current is not stable then the torque delivered will not be stable. So the wattage based Torque Controller uses the wattage drawn as a means of torque control therefore even if the current fluctuates the torque delivered would be the same value as the previous rolling operation.
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 Electrical Drive Systems |
Hydraulic Drive Systems |
Pneumatic Drive Systems |
Contact us at
sales@tubetools.ca
Tel:
(613) 764-0572 or (613) 851-8334 or Fax: (613) 764-3719
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