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THREAD ROLLING

Likewise, the thread of the screw, obtained by rolling, has a longitudinal continuity of the fibres and thus the absence of cuttings due to the removal of chips. This process confers maximum resistance to the product even in the critical areas.

The metal works phenomenon according to which a metal is reinforced by a plastic deformation is referred to as strain hardening and it confers to the finished product a resistance 30-40% greater than a product subjected to conventional turning as estimated by the metal works studies.