Ingeniare. Revista chilena de ingeniería
versión On-line ISSN 0718-3305
CARMONA, Víctor; VERGARA D, Jorge y GODOY R, Juan Miguel. BUSHING HEIGHT EFFECT IN SOLDERED COPPER PIPE JOINTS. Ingeniare. Rev. chil. ing. [online]. 2006, vol.14, n.3, pp. 245-250. ISSN 0718-3305. http://dx.doi.org/10.4067/S0718-33052006000200008.
Copper tubes were drilled with thermal flow drilling. Conventional HSS drills diameters were used to make pre drilling holes. Different height bushings were made. Two of the bushing heights were selected. The bushing circularity was measured. A ø 12,7 mm tube was welded perpendicularly on a ø 28,6 mm tube. A especial support device was designed and it was adapted to the Universal Test Machine, to determine the tensile stress of the brazing joint. The micro hardness and metallographic test were made in the brazing zone. As a conclusion the lower height bushing is enough to reach the maximum resistance.
Palabras llave : Copper manufacturing; non conventional drilling; non conventional energy; solar heating.