Optimization of thick rubber part curing cycles

Abstract

Thick rubber part moulding is a process, during which coupling between heat and chemical kinetic equations is strong. Automatic tooling control, therefore, is the guarantee of achieving proper curing within the mould. This article initially presents a detailed method for curing optimization. With this aim in view, the optimum temperature cycle for the desired curing state is examined. The use, here, of the conjugate gradient method implies to determine the solution of both adjoin and sensitivity equations. A sensitivity study is also conducted in order to improve the kinetic model. Finally, some optimization examples are discussed.

Keywords:

• optimization
• adjoin problem
• moulding
• rubber
• curing
• heat transfer

Acknowledgements

This study comes within the context of the ‘Thermel1’ research programme initiated by the LRCCP. Special thanks to all Thermel1 partners and, in particular, to the LRCCP, Michelin, Hutchinson, GEFFICA, SPBT, SACATEC, SACRED companies for their technical assistance and financial support.