PROCEDIMIENTO DE ALIVIO DE TENSIONES DE TUBOS METALICOS SIN SOLDADURA QUE HAN SUFRIDO UNA OPERACION DE ENDEREZAMIENTO.

摘要

A process for reducing the residual stresses in a seamless metal tube which has undergone a straightening operation comprising subjecting the tube to an internal pressure of between 0.8 Pc and 1.0 Pc for a period of at least 3 minutes, while maintaining the temperature of the tube at or close to ambient temperature, Pc being the critical pressure beyond which the tube will undergo plastic deformation.