| 摘要 |
<p>A step of tire vulcanization in autoclave with an induction heating system used for tire vulcanization/retreading is represented by an inventive solution based on the principle that conductive materials, such as metal and rubber, may be heated by heat induction in the steel plies or in the rubber, depending on the structural characteristics of the type of tire vulcanized and also depending on the level of conductivity and the materials used in tire manufacturing. In this new process, in a tire-shaped part, inductive heating is limited to surface layers of the tire; the tire core should remain unchanged. This condition has the advantage of saving energy and reducing the distortion to which the "tire" part is exposed, since heat will penetrate by conduction in the areas to be vulcanized, thus requiring only the time needed for the heat to reach this area. Finally, once the autoclave is loaded with prepared tires (Pp), tire vulcanization can be obtained via external induction (Ie), internal induction (Ii) and central induction (Ic). The choice of induction type used is set on the basis of previously known parameters for the prepared tire (Pp), such as the conductivity of the materials used and assembled to assist the vulcanization process; the conductivity of the structural components of the tire; suitable induction systems and positioning of the induction devices.</p> |
