Svecom P.E. has created a new business unit, SVECOM CARBON FIBER that combines the experience of over 50 years of production of expandable shafts with the advantages of carbon fiber: this results in a solution that maximizes mechanical performance and lightness.

The process includes a new production plant in which shafts of different sizes can be processed according to customer requirements.

The new production plant allows the construction of tubes of different sizes and mechanical characteristics for the construction of shafts and rollers according to customer requirements.

The tubes can be made using two technologies: Filament Winding and Roll-Wrapping.

Filament Winding is a process that involves the wrapping of resin-impregnated carbon fibers on a mandrel (mold) that defines the finished dimensions of the piece. The tension and the winding angle given to the fibers give the finished pipe the desired mechanical characteristics. The process is completed with the polymerization (hardening) of the resin in a temperature-controlled oven and the extraction of the winding spindle.

The properties of carbon fibers, such as high hardness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion make them very useful in the field of expanding shafts.

Advantages:

  • Wide possibilities of fiber orientation.
  • Highly automated and repeatable process
  • Possibility of making large tubes

In the Roll-Wrapping process, pre-impregnated carbon fiber sheets (prepreg) are wrapped on the spindle / mold, which must be stored at -18 ° C before being cut. The layering (or lamination) of different prepregs with an appropriate orientation gives the final piece the desired mechanical characteristics. Before the polymerization of the resin in the oven, the very high-voltage winding of special plastic strips ensures maximum compaction of the product.

To produce this type of processing, the carbon atoms are bound together in crystals aligned parallel along the axis of the fiber, which receives from this alignment a high strength-volume ratio making it more resistant for its dimensions.

Advantages:

  • Fiber / resin ratio of prepreg is precise and uniform
  • Possibility of arranging the fibers exactly at 0 degrees to obtain the maximum axial stiffness
  • Ease of using prepreg with different types of fibers for making the product
  • Better surface finish obtainable from grinding