G0400106 Study on Bending of AZ31 and AZ91 alloy pipes

Abstract

Bending processed the pipes of AZ31 and AZ91 alloy that it is lightest and control on vibration characteristic are superior. It bent the press with the press machine and performed turn pull bending with CNC pipe Benda of KEIYO BEND CO., Ltd. grasp temperature and speed in the bending and checked the influence that a bending condition give to a sample. Performed press bending and rotary pull bending to grasp bending condition to bend the AZ31 and AZ91 alloy that difficulty on bending to welding and bend it. Bend from bending condition, but crack and wrinkle accepted by appearance observation, and becoming wall decreasing thickness and flatness in healthy specimen. Temperature management to important, and decreasing thickness and flatness have to pursue a relationship with becoming it in each bending than this, but examine a method to let burden compression stress axially, and to prevent wall decreasing thickness because it impossible that the rotary pull bending prevents wall decreasing thickness only by temperature management.