Development of a Process to Simultaneously Weld and Extrude Pipe Using a Spring Type Wire Material

스프링형상 와이어소재를 이용한 접합동시 파이프 압출성형공정 개발에 관한 연구

Ku, K.M.;Kim, T.H.;Jin, I.T.

  • Received : 2014.12.11
  • Accepted : 2015.09.15
  • Published : 2015.10.01


A process for the concurrent welding and extruding of pipe was designed for continuous production of fin tubes. Unlike a conventional pipe extrusion, the new process is able to extrude a pipe continuously without limit of length by using spring type wire material. The current paper provides the basic research for welding during the extrusion using a spring type wire material. The object of the current study is to investigate the possibility that the spring type wire material could be extrude into a welded pipe. The appropriate extrusion ratio was selected through investigation of loads using computer simulations. As a result, experiments showed that pipe could be welded and simultaneously extruded with spring type wire material of aluminum. The tensile strength of the welded and extruded aluminum pipe can reach 80% of tensile strength of original aluminum feedstock.