Centrifugal casting is a production technology used to make composite poles (with fibreglass) in the shape of a truncated cone (TAPERED POLES) with maximum length, set only for logistical constraints, of 13.6 metres.
The pole is formed by inserting the reinforcement (fibreglass) in a specific rotating mould that has a truncated-cone cavity. Due to centrifugal force, the fibreglass adheres to the walls of the mould and takes its shape.
The matrix (resin) inside the mould is impregnated with fibreglass due to the rapid rotation of the mould (centrifugal casting). It also hardens by polymerizing when it comes in contact with the heated mould..
The poles produced by centrifugal casting can have constant or differentiated thickness due to the possibility of controlling the distribution of the reinforcement inside the mould. This way, tapered poles are obtained which are reinforced only in the critical areas determined by their use. This is accomplished without increasing thickness and thus weight over the entire length.
This technology makes it possible to make products with a high degree of dimensional and physical-mechanical repeatability. These poles find wide use, for example, as lighting poles and supports for electricity, telephone and over-head lines.