TITANIUM OR TITANIUM ALLOY/STAINLESS STEEL PIPE JOINT AND ITS MANUFACTURE

摘要

PURPOSE:To manufacture the titanium alloy/stainless steel pipe joint having corrosion resistance and high joining strength by explosive-joining the part having the length in the axial direction larger than the wall thickness via joint mediums superposed on each other in a cylindrical or tapered shaped. CONSTITUTION:The cylindrical or tapered peripheral surfaces having the length in the axial direction larger than the wall thickness of a stainless steel pipe and a titanium or titanium alloy pipe are subjected to explosive welding. As a result, even if the stress acts in the orthogonal direction to a pipe axis, the shearing stress is not applied on the joining interface and further, even if the tensile force acts in the direction of the pipe axis, the shearing stress or tensile stress of the joining interface are low and the reliability of the joint in strength is high. Further, since the joint mediums made of tantalum which have the same shape and are superposed on each other with the mutually coaxial internal and external relation are interposed between the stainless steel and the titanium or titanium alloy, the joint having high corrosion resistance is manufactured even under a high oxidizing atmosphere causing intense corrosion like in concen trated nitric acid.