PEENING DEVICE FOR PEENING WELDS INSIDE STEEL SUBMARINE PIPES, PROCESS FOR PRODUCING STEEL SUBMARINE PIPES USING SUCH A DEVICE, AND SUBMARINE CONNECTION PIPE

摘要

The present application describes a peening device useful for peening regions of annular welds (6) inside submarine pipes, comprising at least one peening tool (5), said device comprising at least one hammer actuated so as undergo reciprocating radial peening translations against the internal surface of the pipe (2i) and/or of said weld (6), in which said peening tool (5) comprises a single hammer, and said hammer is pivotally mounted so as to be able to vary its angle of inclination to the surface to be peened, and said device includes a carriage (3) capable of moving in axial longitudinal translation (XX) inside a pipe and supporting means (4a, 4b) for moving said peening tool (5) in longitudinal and radial translation and in rotation relative to said carriage (3); and said hammer cooperates with actuating means undergoing reciprocating radial peening translations, by the use of electromagnetic energy and reciprocating movement inside a solenoid coil preferably furthermore cooperating with a spring.