Effects of traveling field from a self-developed direct current motor on forming ability and solidification structure of ZL102 aluminum alloy radiator with 2 mm in minimum wall thickness were investigated.The results show that forming ability of ZL102 alloy can be improved with an proper magnetic field at 220～250 V with the help of self-developed linear motor

and the E-type thin-walled ZL102 castings with good surface quality and complete filling can be obtained.In addition

as a result of thermal effect and electromagnetic stirring effect of the traveling magnetic field

grain size of ZL102 alloy is refined

and microstructure is improved.Meanwhile

modification effect on the bottom of the castings is superior to that of the underside.