Method of Swaging Tubes and Pipes Using Corrugation Techniques

摘要

The method alters the external dimensions of the cross-section of a tube for a short distance along from the end, such that the end is modified to form a new cross-section of reproduceable shape and dimension. The cross-section remains substantially the same except for dimensions but will differ from normal swaging by the fact that the extra material or unwanted material has been displaced by the formation of corrugations or folds thus allowing the reduction in dimension to take place. To avoid high stresses especially at corners rollers are used. The avoidance of 'scuffing' allows this method to be ideally suited for the reduction of pre-coated tube and pipe of non-round section to be swaged. IMAGE