Research on Equipment of Copper-clad Aluminum Bimetal Air Pressure Core-filling Continuous Casting
The equipment of copper-clad aluminum bimetal air pressure core-filling continuous casting was designed and manufactured in order to develop small diameter composite casting rods.The upper and lower furnaces in which graphite crucibles were placed were lined with in the same axis for the purpose of heating core material of aluminum and outer layer of copper.Pressurized by nitrogen during continuous casting,outer layer of copper tube was taken shape firstly,and the inner core of melt aluminum was filled in it though core-filling tube then cooled by solidification,at last the metallurgical bonding was achieved by diffusion of heat and elements.The bimetal composite rods of copper clad aluminum were made successfully with the core of aluminum 8 mm in diameter and the outer layer copper thickness of 2 mm.