New "Isomandrel" Technology Permits High Speed, Optimally Controlled Cure of Thermoset, Filament Wound Pipe Sections without the Need for Cure Ovens


A new and unique super thermal conductive mandrel technology developed by Acrolab Ltd. of Windsor, Ontario, Canada, will now permit curing of filament wound pipe and tube sections without the need for cure ovens by heating the mandrel uniformly, while rotating, using induction heating.

Trademarked the "Isomandrel", the new mandrel design consists of an internal process within the mandrel which enhances its thermal conductivity and thermal reactivity. The process permits heat to be applied in a localized concentration that is then rapidly and homogeneously redistributed over the complete mandrel working surface.

"Isomandrel" technology when coupled with induction heating permits the mandrel and filament winding to continue rotating while being heated to an optimum controlled temperature to effect cure. This heating can occur while the assembly is still rotating in the winding machine or on a rotating fixture within the manufacturing cell.

Acrolab Ltd, working with McClean Anderson of Schofield, Wisconsin and Ameritherm of Scottsville, New York, together as a technology team, constructed the curing cell at McClean Anderson’s laboratory. The induction heated "Isomandrel" curing station was used to cure a number of 48” long pipe sections wound with glass and carbon fiber epoxy prepregs, provided by TCR Composites of Ogden, Utah and wound on a 3 inch O.D. "Isomandrel".

At the end of the winding cycle, the sections were successfully cured on the "Isomandrel" using an EKOHEAT Induction Power Supply and coil assembly while the "Isomandrel" and winding were still mounted and rotating at a reduced 10 RPM on the Super Hornet Winder.

By providing high thermal energy, uniformly over the entire mandrel surface outward through the filament winding, the cure is completed in much shorter time with less energy while providing a significantly more uniform cure and resin rich I.D.

Ameritherm and McClean Anderson are currently developing a fully software/hardware integrated station to provide the controlled power and recipe requirements to integrate with Acrolab’s "Isomandrel" technology.

The combination of the "Isomandrels"unique capability to provide high speed of response and near isothermal conditions on the complete working surface of the mandrel, coupled with the three term process temperature control and high speed of response induction heating capability of the Ameritherm power supply, results in optimum "ramp, soak and hold" process control at the most advantageous curing temperatures.

VIDEO-1

Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player



The equipment utilized in the project:
  • McClean Anderson Super Hornet Filament Winding Machine
  • Ameritherm EKOHEAT 45 KW Induction Power Supply
Infra red thermo graphic images of Isomandrel and traditional hollow mandrel testing

VIDEO-2

Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player



An Isomandrel heated to steady state with a non contact 2" wide induction coil, while rotating,

VIDEO-3

Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player



Traditional hollow mandrel heated to steady state with a non contact 2" wide induction coil, while rotating,

For further comment or additional information please contact:
Joe Ouellette, President, Acrolab Ltd.
7475 Tranby Ave. Windsor, Ontario, Canada, N8S 2B7
Tel: 1 519 944 5900, Email: jouellette@acrolab.com
Name
Email
Phone
Comments
  empty Refresh the code
Enter code
 
ISO 9001
Ontario Global Traders Award 2007