CLASS A SURFACES FOR CARBON COMPOSITE COMPONENTS
Due to their favourable qualities carbon composite materials become more and more important in various fields as automotive, aerospace or consumer products. Low weight combined with high stability make it a preferred choice for many applications. During the past decade a considerable progress in process automation and a resulting cost reduction could be achieved. However, the surface finishing and in particular the production of class A surfaces is still a challenge with regard to reproducibiliy and costs.
The innovation provides a solution for the improvement of carbon composite surfaces. A sandwich of fibres and foils is created using a process-integrated technique. Before impregnation the sandwich is evacuated and the device is formed. After the impregnation procedure and the following thermal treatment, the foil is the integral surface of the device. Even the production of class A surfaces requires only one further step of polishing and coating which is a reduction of several processing steps compared to the state of the art. Moreover, the invention of a two-layer-foil avoids unevenness of the surface due to the shrinking of the resin.
- Consumer products
- Machine tools
- Plant engineering