Abstract：The flareless internal rolling technology is an important technology in the hydraulic pressure system. The
technology has high sealing performance and connection strength. So it has been used widely in the aeronautical area meeting
for the reliable requirement. For the internal rolling tube joint of Ti alloy, the connection strength is generated because
of the common action of radial contact force and axial pull-off strength between tube and sleeve. The influence regularity of
sleeve structure to connection strength is catched. Deepening the depth of sleeve beard can increase the connection strength.
If the width is over wide, which can inhibit the tube embedding in sleeve and reduce the connection strength. It is instructive
to increase the reliable performance for hydraulic pressure system of plane.
2016, 
