A method of welding a pipe to the wall of a pipe housing seat

摘要

The wall (4) of the present invention relates to a kind of method for welding the outer surface (5a) of a pipe (5) and the cylindrical seat (5) for accommodating pipe (5), the method of offer, among its continuous operating procedure, for providing vacuum and the substantially tubular shape gap (S) that is sealed between wall (4) and surface (5a), subsequent the step of step of the interior pressurization of the combination of pipe (5) and heating. Required welding point is therefore formed and the accumulation in the space (S) of air, once pipe as pressurization and heating result radially extend, by it and by with above-mentioned expansion, prevent. Due to its simplicity and flexibility, method of the invention can once can be used manages in welding one, or for welding multiple pipes simultaneously, as occurring during the composition of heat exchanger element. In the latter case, the space (S) of various pipes (5) is sealed by it helps a metal foil it is wrapped on commutative element and forms a covering thereof.image