A METHOD AND ARRANGEMENT FOR MANUFACTURING OF TUBES BY CONTINUOUS HYDRAULIC EXPANSION

摘要

A method for manufacturing a tube (110) by continuously moving a tubular hollow blank (100) through an expansion tool (60), and supplying fluid to a space (70) delimited by the expansion tool and the tubular hollow blank the such that a hydraulic pressure (P1) is applied inside the tubular hollow blank (100), wherein the magnitude of the hydraulic pressure (P1) is selected such that the tubular hollow blank (100) is deformed plastically. The application also relates to an arrangement (1) for manufacturing a tube (110).