| 摘要 |
<p>PURPOSE:To minimize tack welding work and to improve productivity by constituting a couple of members in a split shape in half formed by connecting a cylindrical branch pipe on one side and a branch wall protruded integrally on the other side by performing brazing deposition on a mutual assembly part of a head opening end peripheral part and a superposed part of the branch pipe and the branch wall. CONSTITUTION:The mutual tack welding work prior to brazing deposition 5 is regulated to the necessary minimum by brazing deposition 5 structure on the fitting assembly part of the fitting mutual head 2 side opening end peripheral part and the superposed part of the respectively connected branch pipe 4 and branch wall 4'. At the same time, heating and brazing deposition 5 by passing the furnace inside is made possible by the structure of an opening end protruded in a stepped shape along the fitting part and the superposed part of the one side member and a mass production system is adopted. In addition, the deposition area is enlarged and the deposition strength is improved by the fitting and superposing structure and brazing connection by simple formation of a cylinder made at the branch pipe 4 side as a connection fitting part to a piping end is made sure. Consequently, there is no fear of a leak even when being arranged under an exciting state extending for a long period of time and the branch pipe side rigidity can be enhanced.</p> |
