Abstract: Lokring Ring is a very efficient and reliable connection technology of the pipes, which has completely replaced the traditional argon arc welding and resistance welding technology in the refrigeration industry. This paper used the CAE simulation technology to simulate the copper pipes connecting process by Lokring Ring, analysed the influences of the different wall thickness of the copper tubes on the bonding strength under the static pressure condition of 18.6MPa and 6.3MPa. The results show that copper will not crack with above two conditions, but there was a leak risk with the wall thickness of pipe 0.6 and 0.7mm connecting by Lokring Ring, suggested to choose the copper pipe more than 0.7mm thickness.

Key words: Lokring Ring, Connection, CAE, ABAQUS