ANNEALING FOR STRESS RELIEVING OF MULTILAYER PRESSURE VESSELS

摘要

A process of annealing for stress relieving of multilayer pressure vessels having a multilayer wall of a material capable of being appreciably hardened upon subjection to the welding heat or of relatively thick plates, which comprises individually annealing for stress relieving a unitary multilayer cylinder with or without prior annealing of the innermost layer alone, and then locally annealing the vessel fabricated of the cylinder and end plates along the circumferential welds thereof.