Method for fixing a double-walled tube structure with titanium internal coating to a titanium tubular plate.

摘要

The present invention relates to a method for fixing a double-walled tube structure with titanium internal liner to a titanium tube plate. …??The method is characterised in that it consists in pressure welding a titanium collar 4 to one end face of the outer tube 2 so as to obtain a securely-fastened titanium end portion comprising the titanium collar at one end of the external tube, in inserting the titanium internal coating tube into the external tube comprising the titanium end portion, and in fixing the titanium internal coating tube to the external tube, in pressure contact with the internal surface of the external tube, so as to obtain the double-walled tube structure with internal titanium lining. …??Application: condenser and heat-exchanger technical fields. …IMAGE…