The Al-Si-Mg composite cylinder liner reinforced with in situ primary Si/Mg2 Si particles was manufactured by centrifugal casting

and the forming process of die casting cylinder liner and body was analyzed.According to the experimental data of bench test

the heat conductivility of the cylinder linerbody was calculated quantitatively.It is shown that the "running aluminum alloy liquid" problem in low pressure casting integrated liner and body can be solved through controlling the preheating temperature of the liner and filling pressure as well as setting refractory cotton into the cavity

which can ensure the satisfied bonding between the liner and the body.The calculation results show that compared to the castiron cylinder liner-body

an aluminum cylinder liner-body has the better heat conductivility

and its thermal performance is two times at least than that of iron cylinder liners.